LT1809/LT1810 Single/Dual 180MHz, 350V/µs Rail-to-Rail Input Output Di
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LT1809/LT1810 Single/Dual 180MHz, 350V/µs Rail-to-Rail Input Output Distortion Amps DESCRIPTION
LT®1809/LT1810 single/dual distortion rail-torail input output amps with 350V/s slew rate. These amplifiers have -3dB bandwidth 320MHz unity-gain, gain-bandwidth product 180MHz 85mA output current needs voltage, high performance signal conditioning systems. LT1809/LT1810 have input range that includes both supply rails output that swings within 20mV either supply rail maximize signal dynamic range supply applications. LT1809/LT1810 have very distortion (-90dBc) 5MHz that allows them used high performance data acquisition systems. LT1809/LT1810 maintain their performance supplies from 2.5V 12.6V specified supplies. inputs driven beyond supplies without damage phase reversal output. LT1809 available 8-pin package with standard pinout 6-pin SOT-23 package. LT1810 features standard dual pinout available 8-pin MSOP packages. These devices used plug-in replacement many amps improve input/output range performance.
-3dB Bandwidth: 320MHz, Gain-Bandwidth Product: 180MHz, Slew Rate: 350V/s Wide Supply Range: 2.5V 12.6V Large Output Current: 85mA Distortion, 5MHz: 90dBc Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage, Rail-to-Rail: 2.5mV Common Mode Rejection: 89dB Power Supply Rejection: 87dB Open-Loop Gain: 100V/mV Shutdown Pin: LT1809 Single 8-Pin 6-Pin SOT-23 Packages Dual 8-Pin MSOP Packages Operating Temperature Range: -40°C 85°C Profile (1mm) SOT-23 (ThinSOTTM) Package
APPLICATIONS
Driving Converters Voltage Signal Processing Active Filters Rail-to-Rail Buffer Amplifiers Video Line Driver
LTC, LTM, Linear Technology Linear logo registered trademarks Linear Technology Corporation. ThinSOT trademark Linear Technology Corporation. other trademarks property their respective owners.
TYPICAL APPLICATION
High Speed Driver
1VP-P DISTORTION (dB)
Distortion Frequency
2VP-P
LT1809
49.9 +AIN 470pF -AIN
LTC®1420 GAIN 2.048V
BITS 10Msps
100,
1809 TA01a
100, -100 -110
FREQUENCY (MHz)
1809 TA01b
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LT1809/LT1810 ABSOLUTE MAXIMUM RATINGS
(Note
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
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
CONFIGURATION
VIEW VIEW SHDN SHDN PACKAGE 6-LEAD PLASTIC TSOT-23 TJMAX 150°C, 145°C/W (Note
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 100°C/W (Note VIEW
VIEW
PACKAGE 8-LEAD PLASTIC MSOP TJMAX 150°C, 130°C/W (Note
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 100°C/W (Note
ORDER INFORMATION
LEAD FREE FINISH LT1809CS6#PBF LT1809IS6#PBF LT1809CS8#PBF LT1809IS8#PBF LT1810CMS8#PBF LT1810IMS8#PBF LT1810CS8#PBF LT1810IS8#PBF TAPE REEL LT1809CS6#TRPBF LT1809IS6#TRPBF LT1809CS8#TRPBF LT1809IS8#TRPBF LT1810CMS8#TRPBF LT1810IMS8#TRPBF LT1810CS8#TRPBF LT1810IS8#TRPBF PART MARKING LTKY LTUF 1809 1809I LTRF LTTQ 1810 1810I PACKAGE DESCRIPTION 6-Lead Plastic TSOT-23 6-Lead Plastic TSOT-23 8-Lead Plastic 8-Lead Plastic 8-Lead Plastic MSOP 8-Lead Plastic MSOP 8-Lead Plastic 8-Lead Plastic SPECIFIED TEMPERATURE RANGE 70°C -40°C 85°C 70°C -40°C 85°C 70°C -40°C 85°C 70°C -40°C 85°C
Consult Marketing parts specified with wider operating temperature ranges. Consult Marketing information non-standard lead based finish parts. more information lead free part marking, http://www.linear.com/leadfree/ more information tape reel specifications,
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LT1809/LT1810 ELECTRICAL CHARACTERISTICS
unless otherwise noted.
PARAMETER Input Offset Voltage SYMBOL
25°C. VSHDN open; VOUT half supply,
CONDITIONS LT1809 SO-8 LT1809 SO-8 0.2V 0.2V 0.2V 0.2V 0.2V 10kHz 10kHz 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, 12.5 0.55 0.31 1.25 0.90 14.8 0.05 0.25 35.5 UNITS nV/Hz pA/Hz V/mV V/mV V/mV
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Input Offset Shift Input Offset Voltage Match (Channel-to-Channel) (Note
LT1809 SO-8
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
-27.5
AVOL
Input Offset Current Input Offset Current Shift Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain
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 Supply Current, Shutdown
ISHDN
SHDN Current Output Leakage Current, Shutdown
SHDN Input Voltage SHDN Input Voltage High Turn-On Time
LT1809/LT1810 ELECTRICAL CHARACTERISTICS
unless otherwise noted.
PARAMETER Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth Total Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC) SYMBOL tOFF FPBW
25°C. VSHDN open; VOUT half supply,
CONDITIONS VSHDN 4.5V 0.3V, Frequency 2MHz 4VP-P VOUT 4VP-P 2VP-P, 5MHz 0.1%, VSTEP 23.5 0.015 0.05 UNITS
denotes specifications which apply over 70°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 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, Load ISINK ISINK 25mA LT1809 SO-8 LT1809 SO-8
0.05 0.40 0.45
UNITS V/°C V/°C V/mV V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note
LT1809 SO-8
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
AVOL
Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain
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
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LT1809/LT1810 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Output Voltage Swing HIGH (Note
denotes specifications which apply over 70°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted.
CONDITIONS Load ISOURCE ISOURCE 25mA VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
UNITS
Short-Circuit Current Supply Current Amplifier Supply Current, Shutdown
0.58 0.35
ISHDN
SHDN Current Output Leakage Current, Shutdown
tOFF FPBW
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 2MHz 4VP-P VOUT 4VP-P
denotes specifications which apply over 40°C 85°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 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 LT1809 SO-8 LT1809 SO-8
0.08 0.58
UNITS V/°C V/°C V/mV V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note
LT1809 SO-8
Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note
AVOL
Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain
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LT1809/LT1810 ELECTRICAL CHARACTERISTICS
SYMBOL CMRR PARAMETER 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 Load ISINK ISINK 25mA Load ISOURCE ISOURCE 25mA VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V 2.5V 10V, 2.5V 10V,
denotes specifications which apply over 40°C 85°C temperature range. VSHDN open; VOUT half supply, unless otherwise noted. (Note
CONDITIONS
UNITS
Output Voltage Swing HIGH (Note
Short-Circuit Current Supply Current Amplifier Supply Current, Shutdown
0.58 0.35
ISHDN
SHDN Current Output Leakage Current, Shutdown
tOFF FPBW
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 2MHz 4VP-P VOUT 4VP-P
25°C. VSHDN open, VOUT unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS LT1809 SO-8 LT1809 SO-8 0.35 0.35 -12.5 UNITS
Input Offset Voltage Shift
LT1809 SO-8
Input Offset Voltage Match (Channel-to-Channel) (Note Input Bias Current 0.2V
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LT1809/LT1810 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) (Note AVOL CMRR Input Offset Current Input Offset Current Shift Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain 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 Output Voltage Swing (Note 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 4.5V, VSHDN 4.5V 0.3V, Frequency 2MHz Measured VOUT 8VP-P 2VP-P, 5MHz 0.1%, VSTEP 0.01 0.01
25°C. VSHDN open, VOUT unless otherwise noted.
CONDITIONS 0.2V 0.2V 0.2V 0.2V 10kHz 10kHz 100kHz -2.5V 2.5V, 14.5 0.05 0.40 0.45 UNITS nV/Hz pA/Hz V/mV V/mV
Output Voltage Swing HIGH (Note
ISHDN tOFF FPBW
Short-Circuit Current Supply Current Amplifier Supply Current, Shutdown SHDN Current Output Leakage Current, Shutdown SHDN Input Voltage SHDN Input Voltage High Turn-On Time Turn-Off Time Gain-Bandwidth Product Slew Rate Full Power Bandwidth Total Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC)
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LT1809/LT1810
denotes specifications which apply over 70°C temperature range. VSHDN open, VOUT unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 0.2V 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 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 0.4V 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V 0.2V -2.5V 2.5V, LT1809 SO-8 LT1809 SO-8 LT1809 SO-8
ELECTRICAL CHARACTERISTICS
3.25 3.25 3.75 3.75 2.75 3.25 12.5 2.25 8.25
UNITS V/°C V/°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
-37.5
17.5 0.06 0.56
Output Voltage Swing HIGH (Note
ISHDN tOFF FPBW
Short-Circuit Current Supply Current Amplifier Supply Current, Shutdown SHDN Current Output Leakage Current, Shutdown 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 2MHz Measured VOUT 8VP-P VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
17.5
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LT1809/LT1810
denotes specifications which apply over 40°C 85°C temperature range. ±5V, VSHDN open, VOUT unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage CONDITIONS 0.2V 0.4V 0.4V 0.2V 0.2V 0.4V 0.2V 0.4V 0.4V 0.2V -2.5V 2.5V, LT1809 SO-8 LT1809 SO-8
ELECTRICAL CHARACTERISTICS
19.8 0.08 0.68
3.75 3.75 4.25 4.25 3.00 3.75 10.5
UNITS V/°C V/°C V/mV V/mV
Input Offset Voltage Drift (Note Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) (Note
LT1809 SO-8
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
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 Supply Current, Shutdown SHDN Current Output Leakage Current, Shutdown 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 2MHz ±4V, Measured VOUT 8VP-P VSHDN 0.3V VSHDN 0.3V VSHDN 0.3V
0.65
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LT1809/LT1810 ELECTRICAL CHARACTERISTICS
Note Stresses beyond those listed under Absolute Maximum Ratings cause permanent damage device. Exposure Absolute Maximum Rating condition extended periods affect device reliability lifetime. Note inputs protected back-to-back diodes. differential input voltage exceeds 1.4V, input current should limited less than 10mA. Note heat sink required keep junction temperature below absolute maximum rating when output shorted indefinitely. Note LT1809C/LT1809I LT1810C/LT1810I guaranteed functional over operating temperature range 40°C 85°C. Note LT1809C/LT1810C guaranteed meet specified performance from 70°C. LT1809C/LT1810C designed, characterized expected meet specified performance from -40°C 85°C tested sampled these temperatures. LT1809I/LT1810I 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 LT1810.
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LT1809/LT1810 TYPICAL PERFORMANCE CHARACTERISTICS
Distribution, (PNP Stage)
PERCENT UNITS PERCENT UNITS PERCENT UNITS
Distribution, (NPN Stage)
Shift
INPUT OFFSET VOLTAGE (mV)
1809
INPUT OFFSET VOLTAGE (mV)
1809
-0.75 -0.5 -0.25 0.25 0.75 INPUT OFFSET VOLTAGE (mV)
1809
Supply Current Supply Voltage
SUPPLY CURRENT (mA) 125°C 25°C OFFSET VOLTAGE (mV) -0.5
Offset Voltage Input Common Mode
TYPICAL PART INPUT BIAS CURRENT 125°C INPUT COMMON MODE VOLTAGE
Input Bias Current Common Mode Voltage
25°C 125°C -55°C
25°C
-55°C 25°C 125°C
-55°C
-55°C -1.0 -1.5 TOTAL SUPPLY VOLTAGE
COMMON MODE VOLTAGE
1809
1809
1809
Input Bias Current Temperature
INPUT BIAS CURRENT TEMPERATURE (°C) OUTPUT SATURATION VOLTAGE
Output Saturation Voltage Load Current (Output Low)
OUTPUT HIGH SATURATION VOLTAGE
Output Saturation Voltage Load Current (Output High)
125°C 0.01 -55°C 25°C
125°C 25°C
0.01 -55°C
0.001 0.01
LOAD CURRENT (mA)
1809
0.001 0.01
LOAD CURRENT (mA)
1809
1809
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LT1809/LT1810 TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Supply Voltage
CHANGE OFFSET VOLTAGE (mV) -0.2 -0.4 -0.6 -0.8 -1.0 TOTAL SUPPLY VOLTAGE 125°C 25°C -55°C OUTPUT SHORT-CIRCUIT CURRENT (mA) 0.5V -55°C 25°C POWER SUPPLY VOLTAGE (±V) SHDN VOLTAGE
1809
Output Short-Circuit Current Power Supply Voltage
-55°C 25°C SUPPLY CURRENT (mA)
Supply Current SHDN Voltage
125°C
125°C
"SINKING"
25°C
"SOURCING" 125°C
-55°C
-100
1809
1809
SHDN Current SHDN Voltage
SHDN CURRENT INPUT VOLTAGE (mV) -100 -150 -200 -250 -300 -350 -400 -450 SHDN VOLTAGE
1809
Open-Loop Gain
-0.5 -1.0 -1.5 -2.0 -2.5 OUTPUT VOLTAGE
1809
Open-Loop Gain
INPUT VOLTAGE (mV) -0.5 -1.0 -1.5 -2.0 -2.5 OUTPUT VOLTAGE
1809
125°C -55°C 25°C
Open-Loop Gain
OFFSET VOLTAGE (mV) INPUT VOLTAGE (mV) -0.5 -1.0 -1.5 -2.0 -2.5 OUTPUT VOLTAGE
Offset Voltage Output Current
CHANGE OFFSET VOLTAGE -100 OUTPUT CURRENT (mA)
1809
Warm-Up Drift Time (LT1809S8)
25°C
25°C 125°C
-55°C
TIME AFTER POWER (SEC)
1809
1809
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LT1809/LT1810 TYPICAL PERFORMANCE CHARACTERISTICS
Input Noise Voltage Frequency
NOISE VOLTAGE (nV/Hz) FREQUENCY (kHz)
1809
Input Noise Current Frequency
OUTPUT VOLTAGE (V/DIV)
1809
0.1Hz 10Hz Output Voltage Noise
CURRENT NOISE (pA/Hz)
ACTIVE 4.5V ACTIVE 2.5V
ACTIVE 2.5V ACTIVE 4.5V FREQUENCY (kHz)
TIME (2s/DIV)
1809
Gain Bandwidth Phase Margin Supply Voltage
25°C GAIN BANDWIDTH (MHz) PHASE MARGIN TOTAL SUPPLY VOLTAGE
1809
Gain Bandwidth Phase Margin Temperature
GAIN BANDWIDTH (MHz) PHASE MARGIN (DEG) PHASE MARGIN SLEW RATE (V/s) PHASE MARGIN (DEG)
Slew Rate Temperature
GAIN BANDWIDTH TEMPERATURE (°C)
GAIN BANDWIDTH
RISING FALLING SLEW RATE TEMPERATURE (°C)
1809
1809
Gain Phase Frequency
GAIN (dB) GAIN 100M FREQUENCY (Hz)
1809
Closed-Loop Gain Frequency
PHASE (DEG) GAIN (dB) GAIN (dB) 100k FREQUENCY (Hz) 100M 500M
1809
Closed-Loop Gain Frequency
PHASE
100k
100k
FREQUENCY (Hz)
100M
500M
1809
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LT1809/LT1810 TYPICAL PERFORMANCE CHARACTERISTICS
Output Impedance Frequency
OUTPUT IMPEDANCE COMMON MODE REJECTION RATIO (dB) 100k FREQUENCY (Hz) 100M 500M
1809
Common Mode Rejection Ratio Frequency
POWER SUPPLY REJECTION RATIO (dB)
Power Supply Rejection Ratio Frequency
25°C POSITIVE SUPPLY NEGATIVE SUPPLY
0.01 100k
FREQUENCY (Hz)
100M
500M
1809
100k FREQUENCY (Hz)
100M
1809
Series Output Resistor Capacitive Load
OVERSHOOT CAPACITIVE LOAD (pF) 1000
1809
Series Output Resistor Capacitive Load
OVERSHOOT INPUT SIGNAL GENERATION (2V/DIV) OUTPUT SETTLING RESOLUTION (2mV/DIV)
0.01% Settling Time
CAPACITIVE LOAD (pF) 1000
1809
20ns/DIV) VOUT 110ns (SETTLING TIME)
1809
Distortion Frequency
DISTORTION (dB) 100, -100 -110 FREQUENCY (MHz)
1809
Distortion Frequency
2VP-P DISTORTION (dB) DISTORTION (dB) 100, -100 -110 100,
Distortion Frequency
2VP-P 100, -100 -110 100,
2VP-P
100,
FREQUENCY (MHz)
1809
FREQUENCY (MHz)
1809
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LT1809/LT1810 TYPICAL PERFORMANCE CHARACTERISTICS
Distortion Frequency
DISTORTION (dB) 100, -100 -110 100, OUTPUT VOLTAGE SWING (VP-P) 2VP-P
Maximum Undistorted Output Signal Frequency
FREQUENCY (MHz)
1809
FREQUENCY (MHz)
1809
Large-Signal Response
Small-Signal Response
Large-Signal Response
10ns/DIV)
1809
10ns/DIV)
1809
10ns/DIV)
1809
Small-Signal Response
Output Overdriven Recovery
Shutdown Response
(1V/DIV)
VSHDN VOUT
VOUT (2V/DIV)
10ns/DIV)
1809
10ns/DIV)
1809
100ns/DIV)
1809
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LT1809/LT1810 APPLICATIONS INFORMATION
Rail-to-Rail Characteristics LT1809/LT1810 have input output signal range that includes both negative 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 common mode voltages between negative supply approximately 1.5V below positive supply. input voltage moves closer toward positive supply, transistor will steer tail current current mirror Q6/Q7, activating differential pair causing pair become inactive rest input common mode range positive supply. pair complementary common emitter stages Q14/Q15 form output stage, enabling output swing from rail-to-rail. capacitors form local feedback loops that lower output impedance high frequency. These devices fabricated Linear Technology's proprietary high speed complementary bipolar process.
ESDD5 SHDN ESDD6 ESDD4 ESDD3
1809
Power Dissipation LT1809/LT1810 amplifiers combine high speed with large output current small package, there need ensure that die's junction temperature does exceed 150°C. LT1809 housed SO-8 package 6-lead SOT-23 package LT1810 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 connected LT1810 SO-8 package (330 square millimeters each side board) will bring thermal resistance, about 85°C/W. Without extra metal trace connected provide heat sink, thermal resistance will around 105°C/W. More information thermal resistance packages with various metal areas connecting provided Tables thermal consideration.
100k VBIAS ESDD1 ESDD2
BUFFER OUTPUT BIAS
BIAS GENERATION
Figure LT1809 Simplified Schematic Diagram
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LT1809/LT1810 APPLICATIONS INFORMATION
Table LT1809 6-Lead SOT-23 Package
COPPER AREA TOPSIDE (mm2) Device mounted topside. BOARD AREA (mm2) 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 135°C/W 145°C/W 160°C/W 200°C/W
Example: LT1810 SO-8 mounted 2500mm2 area board without extra heat spreading plane connected thermal resistance 105°C/W, Operating supplies with both amplifiers simultaneously driving loads, worst-case power dissipation given PD(MAX) 25mA) (2.5)2/50 0.250 0.750W maximum ambient temperature that part allowed operate (PD(MAX) 105°C/W) 150°C (0.750W 105°C/W) 71°C operate device higher ambient temperature, connect more metal area reduce thermal resistance package indicated Table Input Offset Voltage
Table LT1809/LT1810 SO-8 Package
COPPER AREA TOPSIDE (mm2) 1100 BACKSIDE (mm2) 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 LT1810 8-Lead MSOP Package
COPPER AREA TOPSIDE (mm2) BACKSIDE (mm2) BOARD AREA (mm2) 2500 2500 2500 2500 2500 THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 110°C/W 120°C/W 130°C/W 135°C/W 140°C/W
offset voltage will change depending upon which input stage active maximum offset voltage guaranteed less than 3mV. change over entire input common mode range (CMRR) less than 2.5mV single supply. Input Bias Current input bias current polarity depends upon given input common voltage whichever input stage operating. When input stage active, input bias currents flow input pins flow into input pins when input stage activated. Because input offset current less than input bias current, matching source resistances input will reduce total offset error. Output LT1809/LT1810 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.
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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 supply current with output voltage half either supply voltage maximum swing less than supply voltage). PD(MAX) given PD(MAX) IS(MAX)) (VS/2)2/RL
LT1809/LT1810 APPLICATIONS INFORMATION
output amplifier reverse-biased diodes connected each supply. output forced beyond either supply, unlimited current will flow through these diodes. current transient limited several hundred milliamps, 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, diodes D1/D2 D3/D4 will turn keeping 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. LT1809/LT1810's input stages also protected against differential input voltages 1.4V higher back-to-back diodes, D5/D8, that prevent emitterbase 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 each that connected power supplies shown Figure Capacitive Load LT1809/LT1810 optimized high bandwidth distortion applications. drive capacitive load about 20pF unity-gain configuration more with 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, LT1809 noninverting gain with resistors capacitance (device plus board), will probably ring transient response. pole that formed 106MHz will reduce phase margin degrees when crossover frequency amplifier around 70MHz. capacitor higher connected across feedback resistor will eliminate ringing oscillation. SHDN LT1809 SHDN reduce supply current less than 1.25mA. When SHDN pulled low, will generate signal power down device. left unconnected, internal pull-up resistor will keep part fully operating shown Figure output will high impedance during shutdown, turn-on turn-off time less than 100ns. Because inputs protected pair back-to-back diodes, input signal will feed through output during shutdown mode amplitude signal between inputs larger than 1.4V.
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LT1809/LT1810 TYPICAL APPLICATIONS
Driving Converters LT1809/LT1810 have 27ns settling time 0.1% step signal output impedance 100MHz making ideal driving high speed converters. With rail-to-rail input output supply voltage operation, LT1809 also desirable single supply applications. shown Figure LT1809 drives 10Msps, 12-bit ADC, LTC1420. lowpass filter, reduces 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 LT1809 ability amplifier settle quickly will affect spurious-free dynamic range system. Figure Figure depict LT1809 driving LTC1420 different configurations voltage supplies. responses show better than 90dB SFDR supply, 80dB single supply 1.394MHz signal.
AMPLITUDE (dB) 1VP-P
fSAMPLE 10Msps 1.394MHz SFDR 90dB
LT1809
49.9 +AIN 470pF -AIN
LTC1420 GAIN 2.048V
BITS 10Msps
1809
-100 -120 FREQUENCY (MHz)
1809
Figure Noninverting Driver
Figure 4096 Point Response
AMPLITUDE (dB) 2VP-P
fSAMPLE 10Msps 1.394MHz SFDR 90dB
LT1809
49.9 +AIN 470pF -AIN
LTC1420 GAIN 2.048V
BITS 10Msps
1809
-100 -120 FREQUENCY (MHz)
1809
Figure Inverting Driver
Figure 4096 Point Response
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LT1809/LT1810 TYPICAL APPLICATIONS
1VP-P 2.5V AMPLITUDE (dB) fSAMPLE 10Msps 1.394MHz SFDR 80dB
LT1809 470pF 49.9 +AIN -AIN LTC1420 GAIN 4.096V
1809
BITS 10Msps
-100 -120 FREQUENCY (MHz)
1809
0.15F
Figure Single Supply Driver
Figure 4096 Point Response
LT1809
1000F
COAX CABLE VOUT RLOAD
1809
VOLTAGE GAIN (dB)
FREQUENCY (MHz)
1809
150F
Figure Single Supply Video Line Driver
Single Supply Video Line Driver LT1809 wideband rail-to-rail with large output current that allows 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 95MHz supply amount peaking will vary upon value capacitor
Figure Video Line Driver Frequency Response
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LT1809/LT1810 PACKAGE DESCRIPTION
Package 8-Lead Plastic MSOP
(Reference 05-08-1660
0.889 0.127 (.035 .005)
5.23 (.206)
3.20 3.45 (.126 .136)
0.42 0.038 (.0165 .0015)
0.65 (.0256)
3.00 0.102 (.118 .004) (NOTE
0.52 (.0205)
RECOMMENDED SOLDER LAYOUT
DETAIL 0.86 (.034) 4.90 0.152 (.193 .006) 3.00 0.102 (.118 .004) (NOTE
0.254 (.010) GAUGE PLANE
0.53 0.152 (.021 .006) DETAIL 0.18 (.007) SEATING PLANE 0.22 0.38 (.009 .015) 1.10 (.043)
NOTE: DIMENSIONS MILLIMETER/(INCH) DRAWING SCALE DIMENSION DOES INCLUDE MOLD FLASH, PROTRUSIONS GATE BURRS. MOLD FLASH, PROTRUSIONS GATE BURRS SHALL EXCEED 0.152mm (.006") SIDE DIMENSION DOES INCLUDE INTERLEAD FLASH PROTRUSIONS. INTERLEAD FLASH PROTRUSIONS SHALL EXCEED 0.152mm (.006") SIDE LEAD COPLANARITY (BOTTOM LEADS AFTER FORMING) SHALL 0.102mm (.004")
0.65 (.0256)
0.1016 0.0508 (.004 .002)
MSOP (MS8) 0307
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LT1809/LT1810 PACKAGE DESCRIPTION
Package 6-Lead Plastic TSOT-23
(Reference 05-08-1636
0.62
0.95
2.90 (NOTE
1.22
3.85 2.62
2.80
1.50 1.75 (NOTE
RECOMMENDED SOLDER LAYOUT CALCULATOR
0.95
0.30 0.45 PLCS (NOTE
0.80 0.90 0.20 DATUM 1.00 0.01 0.10
0.30 0.50
NOTE: DIMENSIONS MILLIMETERS DRAWING SCALE DIMENSIONS INCLUSIVE PLATING DIMENSIONS EXCLUSIVE MOLD FLASH METAL BURR MOLD FLASH SHALL EXCEED 0.254mm JEDEC PACKAGE REFERENCE MO-193
0.09 0.20 (NOTE
1.90
TSOT-23 0302
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LT1809/LT1810 PACKAGE DESCRIPTION
Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference 05-08-1610)
.189 .197 (4.801 5.004) NOTE
.050
.045 ±.005
.245
.160 ±.005
.228 .244 (5.791 6.197)
.150 .157 (3.810 3.988) NOTE
.030 ±.005 RECOMMENDED SOLDER LAYOUT
.010 .020 (0.254 0.508) .008 .010 (0.203 0.254) .016 .050 (0.406 1.270) NOTE: DIMENSIONS
.053 .069 (1.346 1.752)
.004 .010 (0.101 0.254)
INCHES (MILLIMETERS) DRAWING SCALE THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
.014 .019 (0.355 0.483)
.050 (1.270)
0303
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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.
LT1809/LT1810 TYPICAL APPLICATION
Single Supply, 4MHz, Order Butterworth Filter Benefiting from voltage supply operation, distortion rail-to-rail output LT1809, distortion filter that suitable antialiasing built shown
47pF 22pF 220pF
Figure supply, filter passband 4MHz with 2.5VP-P signal stopband that greater than 70dB frequency 100MHz.
LT1810
470pF
LT1810 VOUT
1809
Figure Single Supply, 4MHz, Order Butterworth Filter
GAIN (dB) 2.5VP-P 100k FREQUENCY (Hz) 100M
1809
Figure Filter Frequency Response
RELATED PARTS
PART NUMBER LT1395 LT1632/LT1633 LT1630/LT1631 LT1806/LT1807 DESCRIPTION 400MHz Current Feedback Amplifier Dual/Quad 45MHz, 45V/s Rail-to-Rail Input Output Amps Dual/Quad 30MHz, 10V/s Rail-to-Rail Input Output Amps COMMENTS 800V/s Slew Rate, Shutdown High Accuracy, 1.35mV VOS(MAX), 70mA Output Current, Supply Current 5.2mA Amplifier High Accuracy, 525V VOS(MAX), 70mA Output Current, Supply Current 4.4mA Amplifier
Single/Dual 325MHz, 140V/s Rail-to-Rail Input Output Amps High Accuracy, 550V VOS(MAX), Noise 3.5nV/Hz, Distortion -80dBc 5MHz
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Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
0709 PRINTED
1630 McCarthy Blvd., Milpitas, 95035-7417
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2000
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