LT1806/LT1807 325MHz, Single/Dual, Rail-to-Rail Input Output, Distorti
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LT1806/LT1807 325MHz, Single/Dual, Rail-to-Rail Input Output, Distortion, Noise Precision Amps DESCRIPTIO
LT®1806/LT1807 single/dual noise rail-to-rail input output unity-gain stable amps that feature 325MHz gain-bandwidth product, 140V/µs slew rate 85mA output current. They optimized voltage, high performance signal conditioning systems. LT1806/LT1807 have very distortion 80dBc 5MHz, input referred noise voltage 3.5nV/Hz maximum offset voltage 550µV that allows them used high performance data acquisition systems. LT1806/LT1807 have input range that includes both supply rails output that swings within 20mV either supply rail maximize signal dynamic range supply applications. LT1806/LT1807 maintain their performance supplies from 2.5V 12.6V specified supplies. inputs driven beyond supplies without damage phase reversal output. LT1806 available 8-pin package with standard pinout 6-pin SOT-23 package. LT1807 features standard dual pinout available 8-pin MSOP packages.These devices used plug-in replacements many amps improve input/output range performance.
Gain Bandwidth Product: 325MHz Slew Rate: 140V/µs Wide Supply Range: 2.5V 12.6V Large Output Current: 85mA Distortion, 5MHz: -80dBc Voltage Noise: 3.5nV/Hz Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage (Rail-to-Rail): 550µV Common Mode Rejection: 106dB Power Supply Rejection: 105dB Unity-Gain Stable Power Down (LT1806) Single SO-8 6-Pin SOT-23 Packages Dual SO-8 8-Pin MSOP Packages Operating Temperature Range: -40°C 85°C
APPLICATIO
Voltage, High Frequency Signal Processing Driving Converters Rail-to-Rail Buffer Amplifiers Active Filters Video Line Driver
registered trademarks Linear Technology Corporation.
TYPICAL APPLICATIO
LT1807
Gain Differential Driver
AMPLITUDE (dB)
4096 Point Response
fSAMPLE 10Msps 1.4086MHz SFDR 83dB NONAVERAGED 200mVP-P
49.9 470pF 5.6pF 49.9
5.6pF
LTC®1420 GAIN VREF 4.096V -AVIN
+AVIN
BITS 10Msps
-100
18067 TA01
-120 FREQUENCY (MHz)
18067 TA02
LT1807
LT1806/LT1807
ABSOLUTE
RATI
Total Supply Voltage 12.6V Input Voltage (Note Input Current (Note ±10mA Output Short-Circuit Duration (Note Indefinite Operating Temperature Range (Note 40°C 85°C
PACKAGE/ORDER ATIO
VIEW SHDN
ORDER PART NUMBER
SHDN
PACKAGE 6-LEAD PLASTIC SOT-23
TJMAX 150°C, 160°C/W (Note
PART MARKING LTNK LTNL ORDER PART NUMBER
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 100°C/W (Note
VIEW
VIEW
LT1807CMS8 LT1807IMS8 PART MARKING LTTT LTTV
PACKAGE 8-LEAD PLASTIC MSOP
TJMAX 150°C, 135°C/W (Note
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 100°C/W (Note
Consult factory parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
25°C. VSHDN open; VOUT half supply, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) (LT1806 SOT-23) 0.2V 0.2V 0.03 0.05 1000 UNITS
Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
LT1806CS6 LT1806IS6
(Note
Specified Temperature Range (Note 40°C 85°C Junction Temperature 150°C Storage Temperature Range 65°C 150°C Lead Temperature (Soldering, sec). 300°C
VIEW
ORDER PART NUMBER LT1806CS8 LT1806IS8 PART MARKING 1806 1806I ORDER PART NUMBER LT1807CS8 LT1807IS8 PART MARKING 1807 1807I
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
25°C. VSHDN open; VOUT half supply unless otherwise noted.
SYMBOL AVOL PARAMETER Input Offset Current Input Offset Current Shift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain 0.5V 4.5V, VS/2 VS/2 0.5V 2.5V, VS/2 2.5V 10V, 2.5V 10V, Load ISINK ISINK 25mA Load ISOURCE ISOURCE 25mA VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V 4.5V, VSHDN 4.5V 0.3V, Frequency 6MHz VOUT 4VP-P 2VP-P, 5MHz 0.01%, VSTEP 0.015 0.05 0.40 0.22 CONDITIONS 0.2V 0.2V 0.1Hz 10Hz 10kHz 10kHz 0.03 0.05 0.08 UNITS nVP-P nV/Hz pA/Hz V/mV V/mV V/mV V/µs
CMRR
Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range
PSRR
Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note Minimum Supply Voltage (Note
Output Voltage Swing (Note
Output Voltage Swing HIGH (Note
Short-Circuit Current Supply Current Amplifier Disable Supply Current
ISHDN
SHDN Current Shutdown Output Leakage Current
tOFF FPBW
SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Full Power Bandwidth Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC)
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
denotes specifications which apply over 70°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted.
CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) (LT1806 SOT-23)
0.03 0.05 0.03 0.05 0.08
1200 0.75 1.80 2.55
UNITS µV/°C µV/°C V/mV V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift
Input Offset Voltage Match (Channel-to-Channel) (Note Input Bias Current 0.2V 0.4V Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V
AVOL
Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain
0.2V
0.5V 4.5V, VS/2 VS/2 0.5V 2.5V, VS/2 2.5V 10V, 2.5V 10V, 0.5V Load ISINK ISINK 25mA Load ISOURCE ISOURCE 25mA VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
CMRR
Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range
PSRR
Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note Minimum Supply Voltage (Note
Output Voltage Swing (Note
Output Voltage Swing HIGH (Note
Short-Circuit Current Supply Current Amplifier Disable Supply Current
0.40 0.22
V/µs
ISHDN
SHDN Current Shutdown Output Leakage Current SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Full Power Bandwidth
tOFF FPBW
VSHDN 0.3V 4.5V, VSHDN 4.5V 0.3V, Frequency 6MHz 4VP-P
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
denotes specifications which apply over 40°C 85°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted. (Note
CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) (LT1806 SOT-23) 0.2V 0.4V 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V 0.2V 0.5V 4.5V, VS/2 VS/2 0.5V 2.5V, VS/2 2.5V 10V, 2.5V 10V, 0.5V Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA VSHDN 0.3.V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain
0.02 0.05 0.02 0.05 0.07
1400
UNITS µV/°C µV/°C V/mV V/mV V/mV V/µV
AVOL
CMRR
Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note Minimum Supply Voltage (Note Output Voltage Swing (Note
PSRR
Output Voltage Swing HIGH (Note
Short-Circuit Current Supply Current Amplifier Disable Supply Current SHDN Current Shutdown Output Leakage Current SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Full Power Bandwidth
ISHDN
tOFF FPBW
VSHDN 0.3V 4.5V, VSHDN 4.5V 0.3V, Frequency 6MHz 4VP-P
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
25°C. VSHDN open; VOUT unless otherwise noted.
CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) Input Offset Voltage Shift (LT1806 SOT-23) Input Offset Voltage Match (Channel-to-Channel) (Note Input Bias Current 0.2V Input Bias Current Shift 0.2V Input Bias Current Match (Channel-to-Channel) (Note 0.2V Input Offset Current 0.2V Input Offset Current Shift 0.2V Input Noise Voltage 0.1Hz 10Hz Input Noise Voltage Density 10kHz Input Noise Current Density 10kHz Input Capacitance 100kHz Large-Signal Voltage Gain -2.5V 2.5V, Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range Power Supply Rejection Ratio 2.5V 10V, PSRR Match (Channel-to-Channel) (Note 2.5V 10V, Output Voltage Swing (Note Load ISINK ISINK 25mA Output Voltage Swing HIGH (Note Load ISOURCE ISOURCE 25mA Short-Circuit Current Supply Current Amplifier Disable Supply Current VSHDN 0.3V SHDN Current VSHDN 0.3V Shutdown Output Leakage Current VSHDN 0.3V SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time VSHDN 0.3V 4.5V, Turn-Off Time VSHDN 4.5V 0.3V, Gain Bandwidth Product Frequency 6MHz Slew Rate ±4V, Measured Full Power Bandwidth 8VP-P Harmonic Distortion 2VP-P, 5MHz Settling Time 0.01%, VSTEP Differential Gain (NTSC) Differential Phase (NTSC) 0.03 0.05 0.03 0.04 0.07 1200 UNITS nVP-P nV/Hz pA/Hz V/mV V/mV V/µs
AVOL CMRR
PSRR
ISHDN tOFF FPBW
0.01 0.01
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
denotes specifications which apply over 70°C temperature range. VSHDN open; VOUT unless otherwise noted.
CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) (LT1806 SOT-23) 0.2V 0.4V 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V 0.2V -2.5V 2.5V,
0.03 0.04 0.03 0.04 0.07
1400
UNITS µV/°C µV/°C V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to Channel) (Note
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
AVOL CMRR
Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range
V/µs
PSRR
Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note Output Voltage Swing (Note
2.5V 10V, 2.5V 10V, Load ISINK ISINK 25mA Load ISOURCE ISOURCE 25mA
Output Voltage Swing HIGH (Note
ISHDN tOFF FPBW
Short-Circuit Current Supply Current Amplifier Disable Supply Current SHDN Current Shutdown Output Leakage Current SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Full Power Bandwidth VSHDN 0.3V 4.5V, VSHDN 4.5V 0.3V, Frequency 6MHz ±4V, Measure 8VP-P VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
denotes specifications which apply over -40°C 85°C temperature range. VSHDN open; VOUT unless otherwise noted. (Note
CONDITIONS (LT1806 SOT-23) (LT1806 SOT-23) (LT1806 SOT-23) 0.2V 0.4V 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V 0.2V =100
0.03 0.04 0.03 0.04 0.07
1600
UNITS µV/°C µV/°C V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
AVOL CMRR
Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note Input Common Mode Range
V/µs
PSRR
Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note Output Voltage Swing (Note
2.5V 10V, Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA
Output Voltage Swing HIGH (Note
ISHDN tOFF FPBW
Short-Circuit Current Supply Current Disable Supply Current SHDN Current Shutdown Output Leakage Current SHDN Input Voltage SHDN Input Voltage HIGH Turn-On Time Turn-Off Time Gain Bandwidth Product Slew Rate Full Power Bandwidth VSHDN 0.3V 4.5V, VSHDN 4.5V 0.3V, Frequency 6MHz ±4V, Measured 8VP-P VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
0.45
Note Absolute maximum ratings those values beyond which life device impaired.
Note inputs protected back-to-back diodes. differential input voltage exceeds 1.4V, input current should limited less than 10mA.
LT1806/LT1807
ELECTRICAL CHARACTERISTICS
Note heat sink required keep junction temperature below absolute maximum rating when output shorted indefinitely. Note LT1806C/LT1806I LT1807C/LT1807I guaranteed functional over temperature range -40°C 85°C. Note LT1806C/LT1807C guaranteed meet specified performance from 70°C. LT1806C/LT1807C designed, characterized expected meet specified performance from -40°C 85°C tested sampled these temperatures. LT1806I/LT1807I guaranteed meet specified performance from -40°C 85°C. Note Minimum supply voltage guaranteed power supply rejection ratio test. Note Output voltage swings measured between output power supply rails. Note This parameter 100% tested. Note Thermal resistance varies depending upon amount board metal attached device. specified certain amount copper metal trace connecting described thermal resistance tables Applications Information section. Note Matching parameters difference between amplifiers LT1807.
TYPICAL PERFOR CHARACTERISTICS
Distribution, (PNP Stage)
PERCENT UNITS
PERCENT UNITS
PERCENT UNITS
-500
-300 -100 INPUT OFFSET VOLTAGE (µV)
Supply Current Supply Voltage
SUPPLY CURRENT (mA)
OFFSET VOLTAGE (µV)
125°C 25°C -55°C
-100 -200 -300 -400 TYPICAL PART -55°C 25°C
INPUT BIAS CURRENT (µA)
TOTAL SUPPLY VOLTAGE
18067
18067
Distribution, (NPN Stage)
Shift
-500
-300 -100 INPUT OFFSET VOLTAGE (µV)
18067
-500
-300 -100 INPUT OFFSET VOLTAGE (µV)
18067
Offset Voltage Input Common Mode
125°C
Input Bias Current Common Mode Voltage
125°C 25°C -55°C
125°C 25°C -55°C COMMON MODE VOLTAGE
-500
INPUT COMMON MODE VOLTAGE
18067
18067
LT1806/LT1807 TYPICAL PERFOR CHARACTERISTICS
Input Bias Current Temperature
OUTPUT SATURATION VOLTAGE
INPUT BIAS (µA)
ACTIVE
OUTPUT SATURATION VOLTAGE
ACTIVE
TEMPERATURE (°C)
Minimum Supply Voltage
OUTPUT SHORT-CIRCUIT CURRENT (mA)
CHANGE OFFSET VOLTAGE (mV)
-0.2 -0.4 -0.6 -0.8 -1.0 TOTAL SUPPLY VOLTAGE 25°C -55°C 125°C
"SINKING"
SUPPLY CURRENT (mA)
SHDN Current SHDN Voltage
SHDN CURRENT (µA)
INPUT VOLTAGE (µV)
-100 -120 -140 -160 -180
-100 -200 -300 -400 -500
INPUT VOLTAGE (µV)
125°C
25°C -55°C
SHDN VOLTAGE
18067
Output Saturation Voltage Load Current (Output Low)
Output Saturation Voltage Load Current (Output High)
125°C 0.01 -55°C
125°C 25°C
25°C
0.01
-55°C
0.001 0.01
LOAD CURRENT (mA)
18067
0.001 0.01
LOAD CURRENT (mA)
18067
Output Short-Circuit Current Power Supply Voltage
-55°C 25°C 125°C POWER SUPPLY VOLTAGE (±V)
Supply Current SHDN Voltage
125°C 25°C
"SOURCING" -55°C 125°C
-55°C
25°C
-100
SHDN VOLTAGE
18067
18067
18067
Open-Loop Gain
-100 -200 -300 -400 -500 OUTPUT VOLTAGE
Open-Loop Gain
18067
OUTPUT VOLTAGE
18067
18067
LT1806/LT1807 TYPICAL PERFOR CHARACTERISTICS
Open-Loop Gain
-100 -200 -300 -400 -500 OUTPUT VOLTAGE OFFSET VOLTAGE (mV) -0.5 -1.0 -1.5 -2.0 -2.5 -100 OUTPUT CURRENT (mA)
18067
OFFSET VOLTAGE DRIFT (µV)
INPUT VOLTAGE (µV)
Input Noise Voltage Frequency
NOISE CURRENT (pA/Hz) NOISE VOLTAGE (nV/Hz) FREQUENCY (kHz)
18067
OUTPUT VOLTAGE (nV)
ACTIVE 4.5V
ACTIVE 2.5V
Gain Bandwidth Phase Margin Supply Voltage
25°C PHASE MARGIN GAIN BANDWIDTH (MHz)
GAIN BANDWIDTH (MHz)
SLEW RATE (µV/µs)
TOTAL SUPPLY VOLTAGE GAIN BANDWIDTH PRODUCT
18067 18067
Offset Voltage Output Current
125°C 25°C
Warm-Up Drift Time (LT1806S8)
TIME AFTER POWER-UP (SEC)
18067
-55°C
±2.5V ±1.5V
Input Noise Current Frequency
ACTIVE 2.5V
1000 -200 -400 -600
0.1Hz 10Hz Output Voltage Noise
ACTIVE 4.5V FREQUENCY (kHz)
18067
-800 -1000 TIME (SEC)
18067
Gain Bandwidth Phase Margin Temperature
PHASE MARGIN PHASE MARGIN
Slew Rate Temperature
±2.5V
PHASE MARGIN (DEG)
PHASE MARGIN (DEG)
PRODUCT PRODUCT
TEMPERATURE (°C)
18067
TEMPERATURE (°C)
18067
LT1806/LT1807 TYPICAL PERFOR CHARACTERISTICS
Gain Phase Frequency
PHASE PHASE
GAIN (dB)
GAIN (dB)
GAIN (dB)
GAIN GAIN
FREQUENCY (MHz)
Output Impedance Frequency
OUTPUT IMPEDANCE 0.01 0.001 100k
0.01 FREQUENCY (MHz)
POWER SUPPLY REJECTION RATIO (dB)
COMMON MODE REJECTION RATIO (dB)
FREQUENCY (Hz)
Series Output Resistor Capacitive Load
OVERSHOOT
OVERSHOOT
CAPACITIVE LOAD (pF)
18067
Gain Frequency
10pF
PHASE (DEG)
Gain Frequency
10pF
FREQUENCY (MHz)
18067
-135 -180 -225
FREQUENCY (MHz)
18067
Common Mode Rejection Ratio Frequency
Power Supply Rejection Ratio Frequency
25°C
POSITIVE SUPPLY
NEGATIVE SUPPLY
100M
500M
0.001
0.01
FREQUENCY (MHz)
18067
18067
18067
Series Output Resistor Capacitive Load
0.01% Settling Time
INPUT SIGNAL GENERATION (2V/DIV) OUTPUT SETTLING RESOLUTION (2mV/DIV)
1000
18067
CAPACITIVE LOAD (pF)
1000
18067
20ns/DIV VOUT 120ns (SETTLING TIME)
18067
LT1806/LT1807 TYPICAL PERFOR CHARACTERISTICS
Distortion Frequency
VOUT 2VP-P
DISTORTION (dBc)
DISTORTION (dBc)
100, 100,
DISTORTION (dBc)
100, -100 -110 100,
FREQUENCY (MHz)
Distortion Frequency
VOUT 2VP-P 100, 100, -100 -110 -120 FREQUENCY (MHz)
18067
OUTPUT VOLTAGE SWING (VP-P)
DISTORTION (dBc)
Large-Signal Response
FREQ 1.92MHz
40ns/DIV
18067
Distortion Frequency
VOUT 2VP-P -100 -110
Distortion Frequency
VOUT 2VP-P 100, 100,
-100 -110
FREQUENCY (MHz)
18067
-120
FREQUENCY (MHz)
18067
Maximum Undistorted Output Signal Frequency
FREQUENCY (MHz)
18067
Small-Signal Response
Large-Signal Response
0.5V
18067
FREQ 4.48MHz
20ns/DIV
18067
FREQ 5.29MHz
20ns/DIV
18067
LT1806/LT1807 TYPICAL PERFOR CHARACTERISTICS
Small-Signal Response Output Overdriven Recovery Shutdown Response
10ns/DIV
APPLICATIO ATIO
Rail-to-Rail Characteristics
LT1806/LT1807 have input output signal range that covers from negative power supply positive power supply. Figure depicts simplified schematic amplifier. input stage comprised differential amplifiers, stage Q1/Q2 stage Q3/Q4 that active over different ranges common mode input voltage. differential pair active between negative supply approximately 1.5V below positive
ESDD5 SHDN ESDD6 ESDD4 ESDD3 100k
ESDD1
ESDD2
BIAS GENERATION
Figure LT1806 Simplified Schematic Diagram
18067
(1V/DIV) VOUT (2V/DIV)
VSHDN (2V/DIV) VOUT (2V/DIV) 100ns/DIV 200ns/DIV
18067
18067
supply. input voltage moves closer toward positive supply, transistor will steer tail current current mirror Q6/Q7, activating differential pair. pair becomes inactive rest input common mode range positive supply. pair complementary common emitter stages Q14/ that enable output swing from rail rail constructs output stage. capacitors form local feedback loops that lower output
VBIAS
BUFFER OUTPUT BIAS
18067
LT1806/LT1807
APPLICATIO ATIO
impedance high frequency. These devices fabricated Linear Technology's proprietary high speed complementary bipolar process. Power Dissipation LT1806/LT1807 amplifiers combine high speed with large output current small package, there need ensure that die's junction temperature does exceed 150°C. LT1806 housed SO-8 package 6-lead SOT-23 package LT1807 SO-8 8-lead MSOP package. packages have supply fused lead frame enhance thermal conductance when connecting ground plane large metal trace. Metal trace plated through-holes used spread heat generated device backside board. example, 3/32" FR-4 board with copper, total square millimeters connects LT1807 SO-8 package (330 square millimeters each side board) will bring thermal resistance, about 85°C/W. Without extra metal trace beside power line connecting provide heat sink, thermal resistance will around 105°C/W. More information thermal resistance packages with various metal areas connecting provided Tables
Table LT1806 6-Lead SOT-23 Package
COPPER AREA TOPSIDE (mm2) BOARD AREA (mm2) 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 135°C/W 145°C/W 160°C/W 200°C/W
Device mounted topside.
Table LT1806/LT1807 SO-8 Package
COPPER AREA TOPSIDE BACKSIDE (mm2) (mm2) 1100 1100 BOARD AREA (mm2) 2500 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 65°C/W 85°C/W 95°C/W 100°C/W 105°C/W
Device mounted topside.
Table LT1807 8-Lead MSOP Package
COPPER AREA TOPSIDE BACKSIDE (mm2) (mm2) BOARD AREA THERMAL RESISTANCE (mm2) (JUNCTION-TO-AMBIENT) 2500 2500 2500 2500 2500 110°C/W 120°C/W 130°C/W 135°C/W 140°C/W Device mounted topside.
Junction temperature calculated from ambient temperature power dissipation follows: power dissipation function supply voltage, output voltage load resistance. given supply voltage, worst-case power dissipation PD(MAX) occurs maximum quiescent supply current output voltage which half either supply voltage maximum swing less than supply voltage). PD(MAX) given PD(MAX) IS(MAX)) (VS/2)2/RL Example: LT1807 SO-8 mounted 2500mm area board without extra heat spreading plane connected thermal resistance 105°C/W, Operating supplies with both amplifiers simultaneously driving loads, worstcase power dissipation given PD(MAX) 14mA) (2.5)2/50 0.28 0.25 0.53W maximum ambient temperature that part allowed operate (PD(MAX) 105°C/W) 150°C (0.53W 105°C/W) 94°C operate device higher ambient temperature, connect more metal area reduce thermal resistance package indicated Table
LT1806/LT1807
APPLICATIO ATIO
Input Offset Voltage
offset voltage will change depending upon which input stage active maximum offset voltage guaranteed less than 550µV. maintain precision characteristics amplifier, change over entire input common mode range (CMRR) limited less than 550µV single supply. Input Bias Current input bias current polarity depends given input common voltage which input stage operating. When input stage active, input bias currents flow input pins. When input stage activated, input bias current flows into input pins. Because input offset current less than input bias current, matching source resistances input pins will reduce total offset error. Output LT1806/LT1807 deliver large output current, short-circuit current limit around 90mA prevent damage device. Attention must paid keep junction temperature below absolute maximum rating 150°C (refer Power Dissipation section) when output continuously short-circuited. output amplifier reverse-biased diodes connected each supply. output forced beyond either supply, unlimited current will flow through these diodes. current transient limited hundred milliamps less, damage device will occur. Overdrive Protection When input voltage exceeds power supplies, pairs crossing diodes will prevent output from reversing polarity. input voltage exceeds either power supply 700mV, diode D1/D2 D3/D4 will turn keep output proper polarity. phase reversal protection perform properly, input current must limited less than 5mA. amplifier
severely overdriven, external resistor should used limit overdrive current. LT1806/LT1807's input stages also protected against large differential input voltages 1.4V higher pair back-to-back diodes, D5/D8, that prevent emitter-base breakdown input transistors. current these diodes should limited less than 10mA when they active. worst-case differential input voltage usually occurs when input driven while output shorted ground unity gain configuration. addition, amplifier protected against strikes pins pair protection diodes, ESDD1 ESDD6, each that connected power supplies shown Figure Capacitive Load LT1806/LT1807 optimized high bandwidth distortion applications. They drive capacitive load about 20pF unity-gain configuration, more higher gain. When driving larger capacitive load, resistor should connected between output capacitive load avoid ringing oscillation. feedback should still taken from output that resistor will isolate capacitive load ensure stability. Graphs capacitive loads indicate transient response amplifier when driving capacitive load with specified series resistor. Feedback Components When feedback resistors used gain, care must taken ensure that pole formed feedback resistors total capacitance inverting input does degrade stability. instance, LT1806/ LT1807 noninverting gain with resistors capacitance (part plus board) will probably ring transient response. pole formed 106MHz that will reduce phase margin degrees when crossover frequency amplifier around 70MHz. capacitor higher connected across feedback resistor will eliminate ringing oscillation.
LT1806/LT1807
APPLICATIO ATIO
SHDN
LT1806 SHDN reduce supply current less than 0.9mA. When SHDN pulled low, will generate signal power down device. left unconnected, internal pull-up resistor will keep part fully operating shown Figure output
TYPICAL APPLICATIO
Driving Converter LT1806/LT1807 have 60ns settling time 0.01% step signal, output impedance 100MHz, that makes them ideal driving high speed converters. With rail-to-rail input output, supply voltage operation, LT1806/LT1807 also desirable single supply applications. shown application front page this data sheet, LT1807 drives 10Msps, 12-bit, LTC1420 gain Driving LTC1420 differentially will optimize signal-to-noise ratio, SNR, total harmonic distortion, THD, converter. lowpass filter, reduce noise distortion products that might come from input signal. High quality capacitors resistors, chip capacitor metal film surface mount resistors, should used since these components distortion. voltage glitch converter, sampling nature buffered LT1807, ability amplifier settle quickly will affect spurious free dynamic range system. Figure depicts LT1806 driving LTC1420 noninverting gain configuration. responses show better than 92dB spurious free dynamic range, SFDR.
1.5VP-P
LT1806
49.9 +AIN 470pF -AIN
AMPLITUDE (dB)
LTC1420 GAIN 2.048V
Figure Noninverting Driver
will high impedance during shutdown, turn-on turn-off time less than 100ns. Because input protected pair back back diodes, input signal will feed through output during shutdown mode amplitude signal between inputs larger than 1.4V.
fSAMPLE 10Msps 1.4086MHz SFDR 92.5dB
BITS 10Msps
18067
-100 -120 FREQUENCY (MHz)
18067
Figure 4096 Point Response
LT1806/LT1807
TYPICAL APPLICATIO
Single Supply Video Line Driver LT1806/LT1807 wideband rail-to-rail amps with large output current that allows them drive video signals supply applications. Figure depicts single supply video line driver with coupling minimize quiescent power dissipation. Resistors used level-shift input output provide largest signal swing. gain with restore signal VOUT, which attenuated matching line with back-terminated resistor, back termination will eliminate reflection signal that comes from load. input termination resistor, optional-it used only matching incoming line necessary. values selected minimize droop luminance signal. some less stringent requirements, value capacitors could reduced. bandwidth driver about 90MHz supply, amount peaking will vary upon value capacitor
33µF
VOLTAGE GAIN (dB)
LT1806
1000µF
COAX CABLE VOUT RLOAD
18067
150µF
Figure Single Supply Video Line Driver
FREQUENCY (MHz)
18067
Figure Video Line Driver Frequency Response
LT1806/LT1807
TYPICAL APPLICATIO
Single Supply, 4MHz, Order Butterworth Filter Benefiting from voltage supply operation, distortion rail-to-rail output LT1806/LT1807, distortion filter that suitable antialiasing built shown Figure supply, filter built with LT1807 passband 4MHz with 2.5VP-P signal stopband that greater than 70dB frequency 100MHz. option minimize offset voltage output, connect series resistor bypass capacitor noninverting inputs amplifiers shown Figure
(OPTIONAL)
Figure Single Supply, 4MHz, Order Butterworth Filter
GAIN (dB)
47pF 22pF 220pF
LT1807
470pF
LT1807 VOUT
4.7µF (OPTIONAL)
18067
2.5VP-P 100k FREQUENCY (Hz) 100M
18067
Figure Filter Frequency Response
LT1806/LT1807
TYPICAL APPLICATIO
1MHz Series Resonant Crystal Oscillator with Square Sinusoid Outputs Figure shows classic 1MHz series resonant crystal oscillator. series resonance, crystal impedance positive feedback connection what brings about oscillation series resonance frequency. feedback around other path ensures that circuit does find stable operating point refuse oscillate. comparator output 1MHz square wave with measured jitter 28psRMS with supply 40psRMS with supply. other side crystal, however, excellent looking sine wave except fact small high frequency glitch caused fast edge crystal capacitance (middle trace Figure Sinusoid amplitude stability maintained fact that sine wave basically filtered version square wave; usual amplitude control loops associated with sinusoidal oscillators immediately necessary.1 make this sine wave buffering filtering this combined task LT1806. configured bandpass filter with does good cleaning buffering sine wave. Distortion measured -70dBc 60dBc second third harmonics.
1Amplitude will linear function comparator output swing, which supply dependent therefore controllable. important difference here that added amplitude stabilization loop will faced with classical task avoiding regions nonoscillation versus clipping.
1MHZ AT-CUT LT1713
SQUARE WAVE
0.1µF
Figure LT1713 Comparator Configured Series Resonant Crystal Oscillator. LT1806 Configured Bandpass Filter with 1MHz
Figure Oscillator Waveforms with Trace Comparator Output. Middle Trace Crystal Feedback LT1713. Bottom Trace Buffered, Inverted Bandpass Filtered with LT1806
6.49k 100pF 100pF 0.1µF
100pF 15.8k
LT1806 (NC) SINE WAVE
18067
2.7V
3V/DIV
1V/DIV
1V/DIV
200ns/DIV
1806
LT1806/LT1807
PACKAGE DESCRIPTIO
0.35 0.55 (0.014 0.022)
NOTE: DIMENSIONS MILLIMETERS DIMENSIONS INCLUSIVE PLATING DIMENSIONS EXCLUSIVE MOLD FLASH METAL BURR MOLD FLASH SHALL EXCEED 0.254mm PACKAGE EIAJ REFERENCE SC-74A (EIAJ)
Dimensions inches (millimeters) unless otherwise noted.
Package 6-Lead Plastic SOT-23
(LTC 05-08-1634)
2.80 3.00 (0.110 0.118) (NOTE
(0.110 0.118) 1.50 1.75 (0.059 0.069)
1.90 (0.074)
0.95 (0.037)
0.00 0.15 (0.00 0.006)
0.90 1.45 (0.035 0.057)
0.09 0.20 (0.004 0.008) (NOTE
0.35 0.50 0.90 1.30 (0.014 0.020) (0.035 0.051) SOT-23 0898 PLACES (NOTE
LT1806/LT1807
PACKAGE DESCRIPTIO
0.007 (0.18) 0.021 0.006 (0.53 0.015)
DIMENSION DOES INCLUDE MOLD FLASH, PROTRUSIONS GATE BURRS. MOLD FLASH, PROTRUSIONS GATE BURRS SHALL EXCEED 0.006" (0.152mm) SIDE DIMENSION DOES INCLUDE INTERLEAD FLASH PROTRUSIONS. INTERLEAD FLASH PROTRUSIONS SHALL EXCEED 0.006" (0.152mm) SIDE
Dimensions inches (millimeters) unless otherwise noted.
Package 8-Lead Plastic MSOP
(LTC 05-08-1660)
0.118 0.004* (3.00 0.102)
0.193 0.006 (4.90 0.15)
0.118 0.004** (3.00 0.102)
0.043 (1.10) SEATING PLANE
0.034 (0.86)
0.009 0.015 (0.22 0.38)
0.0256 (0.65)
0.005 0.002 (0.13 0.05)
MSOP (MS8) 1100
LT1806/LT1807
PACKAGE DESCRIPTIO
0.010 0.020 (0.254 0.508) 0.008 0.010 (0.203 0.254)
0.014 0.019 (0.355 0.483) *DIMENSION DOES INCLUDE MOLD FLASH. MOLD FLASH SHALL EXCEED 0.006" (0.152mm) SIDE **DIMENSION DOES INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL EXCEED 0.010" (0.254mm) SIDE
0.016 0.050 (0.406 1.270)
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
Dimensions inches (millimeters) unless otherwise noted.
Package 8-Lead Plastic Small Outline (Narrow 0.150)
(LTC 05-08-1610)
0.189 0.197* (4.801 5.004)
0.228 0.244 (5.791 6.197)
0.150 0.157** (3.810 3.988)
0.053 0.069 (1.346 1.752)
0.004 0.010 (0.101 0.254)
0.050 (1.270)
1298
LT1806/LT1807
TYPICAL APPLICATIO
Input, Fast, High Gain Photodiode Amplifier Figure shows fast, high gain transimpedance amplifier applied photodiode. JFET buffer used extremely input bias current high speed. LT1097 2N3904 keep JFET biased IDSS zero offset lowest voltage noise. JFET then drives LT1806, with closing high speed loop back JFET input setting transimpedance gain. helps improve phase margin fast loop. Output voltage noise density measured 9nV/Hz with short circuited. With varied from 100k total output
SIEMENS/ INFINEON SFH213FA PHOTODIODE
RELATED PARTS
PART NUMBER LT1395 LT1399 LT1632/LT1633 LT1809/LT1810 DESCRIPTION 400MHz Current Feedback Amplifier Triple 300MHz Current Feedback Amplifier COMMENTS 800V/µs Slew Rate, Shutdown 0.1dB Gain Flatness 150MHz, Shutdown
Dual/Quad 45MHz, 45V/µs Rail-to-Rail Input Output Amplifiers High Accuracy 1.35mV VOS(MAX), 70mA Output Current, Supply Current 5.2mA/Amp Single/Dual 180MHz Input Output Rail-to-Rail Amplifiers 350V/µs Slew Rate, Shutdown, Distortion 90dBc 5MHz
18067f LT/LCG 1200 PRINTED
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7417
(408)432-1900 FAX: (408) 434-0507 www.linear-tech.com
noise below 1mVRMS measured over 10MHz bandwidth. Table shows results achieved with various values Figure shows time domain response with 499k.
Table Results Achieved Various 1.2V Output Step
100k 200k 499k
RISE TIME 64ns 94ns 154ns 263ns
-3dB BANDWIDTH 6.8MHz 4.6MHz 3MHz 1.8MHz
2N5486 100pF 2N3904 0.1µF 2.4k
LT1806 49.9 VOUT
18067
LT1097
2200pF
*ADJUST PARASITIC CAPACITANCE DESIRED RESPONSE CHARACTERISTICS
Figure Fast, High Gain Photodiode Amplifier
100mV/DIV
200ns/DIV
18067
Figure Step Response with 499k
LINEAR TECHNOLOGY CORPORATION 2000
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