LT®1800 power, high speed rail-to-rail input output operational amplif

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LT®1800 power, high speed rail-to-rail input output operational amplif

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LT1800 80MHz, 25V/µs Power Rail-to-Rail Input Output Precision DESCRIPTION
LT®1800 power, high speed rail-to-rail input output operational amplifier with excellent performance. LT1800 features reduced supply current, lower input offset voltage, lower input bias current higher gain than other devices with comparable bandwidth. LT1800 input range that includes both supply rails output that swings within 20mV either supply rail maximize signal dynamic range supply applications. LT1800 maintains performance supplies from 2.3V 12.6V specified supplies. inputs driven beyond supplies without damage phase reversal output. LT1800 available 8-pin package with standard pinout 5-pin TSOT-23 package. dual quad versions LT1800, LT1801/LT1802 data sheet. LT1800 used plug-in replacement many amps improve input/output range performance.
LTC, LTM, Linear Technology Linear logo registered trademarks Linear Technology Corporation. ThinSOT trademark Linear Technology Corporation. other trademarks property their respective owners.
Gain Bandwidth Product: 80MHz Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Quiescent Current: Input Offset Voltage: 350V Input Bias Current: 250nA Voltage Noise: 8.5nV/Hz Slew Rate: 25V/s Common Mode Rejection: 105dB Power Supply Rejection: 97dB Open-Loop Gain: 85V/mV Operating Temperature Range: -40°C 85°C Available 8-Pin 5-Pin Profile (1mm) ThinSOTPackages
APPLICATIONS
Voltage, High Frequency Signal Processing Driving Converters Rail-to-Rail Buffer Amplifiers Active Filters Video Line Driver
TYPICAL APPLICATION
Single Supply Laser Driver Amplifier
Laser Driver Amplifier 500mA Pulse Response
LT1800
FLOAT
39pF
ZETEX FMMT619 LASER INFINEON SFH495
100mA/DIV
1800 TA01a
50ns/DIV
1800 TA01b
1800fa
LT1800 ABSOLUTE MAXIMUM RATINGS
(Note
Total Supply Voltage (VS- VS+) .12.6V Input Current (Note 2).±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 VOUT PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX 150°C, 250°C/W VOUT
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 190°C/W
ORDER INFORMATION
LEAD FREE FINISH LT1800CS8#PBF LT1800IS8#PBF LT1800CS5#PBF LT1800IS5#PBF TAPE REEL LT1800CS8#TRPBF LT1800IS8#TRPBF LT1800CS5#TRPBF LT1800IS5#TRPBF PART MARKING 1800 1800I LTRN LTRP PACKAGE DESCRIPTION 8-Lead Plastic 8-Lead Plastic 5-Lead Plastic TSOT-23 5-Lead Plastic TSOT-23 SPECIFIED TEMPERATURE RANGE 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,
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
25°C. VOUT half supply, unless otherwise noted.
CONDITIONS (SOT-23) (SOT-23) 1.5V 0.1Hz 10Hz 1500 UNITS VP-P
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Input Offset Shift Input Bias Current Input Offset Current Input Noise Voltage
LT1800 ELECTRICAL CHARACTERISTICS
SYMBOL AVOL PARAMETER Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain 10kHz 10kHz 100kHz 0.5V 4.5V, VS/2 VS/2 0.5V 2.5V, VS/2 3.5V 1.5V 2.5V 10V, Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA Frequency 2MHz VOUT 4VP-P 2VP-P, 500kHz 0.01%, VSTEP 0.35
25°C. VOUT half supply, unless otherwise noted.
CONDITIONS UNITS nV/Hz pA/Hz V/mV V/mV V/mV
CMRR
Common Mode Rejection Ratio Input Common Mode Range
PSRR
Power Supply Rejection Ratio Minimum Supply Voltage (Note Output Voltage Swing (Note
Output Voltage Swing High (Note
FPBW
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate Full Power Bandwidth Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC)
denotes specifications which apply over temperature range 70°C. VOUT half supply, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS (SOT-23) (SOT-23) 1.5V VCM= 0.2V 0.2V 0.5V 4.5V, VS/2 VS/2 0.5V 2.5V, VS/2 3.5V 1.5V
1250 3.75 1750
UNITS V/°C V/mV V/mV V/mV
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AVOL
Input Offset Shift Input Offset Voltage Drift (Note Input Bias Current Input Offset Current Large-Signal Voltage Gain
CMRR
Common Mode Rejection Ratio
LT1800 ELECTRICAL CHARACTERISTICS
SYMBOL PSRR PARAMETER Input Common Mode Range Power Supply Rejection Ratio Minimum Supply Voltage (Note Output Voltage Swing (Note Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA Frequency 2MHz 4VP-P 2.5V 10V,
denotes specifications which apply over temperature range 70°C. VOUT half supply, unless otherwise noted.
CONDITIONS
1000
UNITS
Output Voltage Swing High (Note
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate
2.75
denotes specifications which apply over temperature range -40°C 85°C. VOUT half supply, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS (SOT-23) (SOT-23) 1.5V 0.2V 0.2V 0.5V 4.5V, VS/2 1.5V 3.5V, VS/2 0.5V 2.5V, VS/2 3.5V 1.5V 2.5V 10V, Load ISINK ISINK 10mA Load ISOURCE ISOURCE 10mA Frequency 2MHz
0.75
2000 2000
UNITS V/°C V/mV V/mV V/mV
AVOL
Input Offset Shift Input Offset Voltage Drift (Note Input Bias Current Input Offset Current Large-Signal Voltage Gain
CMRR
Common Mode Rejection Ratio Input Common Mode Range
PSRR
Power Supply Rejection Ratio Minimum Supply Voltage (Note Output Voltage Swing (Note
Output Voltage Swing High (Note
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate
12.5 12.5
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LT1800 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage
25°C, ±5V, VOUT unless otherwise noted.
2.75 0.35 1000 1500 UNITS VP-P nV/Hz pA/Hz V/mV V/mV
CONDITIONS (SOT-23) (SOT-23) 1.5V 0.1Hz 10Hz 10kHz 10kHz 100kHz 3.5V 2.5V 10V, Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA
Input Offset Shift Input Bias Current Input Offset Current Input Noise Voltage
AVOL CMRR PSRR
Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain Common Mode Rejection Ratio Input Common Mode Range Power Supply Rejection Ratio Output Voltage Swing (Note
Output Voltage Swing High (Note
FPBW
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate Full Power Bandwidth Harmonic Distortion Settling Time Differential Gain (NTSC) Differential Phase (NTSC) Frequency 2MHz ±4V, Measured 8VP-P 2VP-P, 500kHz 0.01%, VSTEP
denotes specifications which apply over temperature range 70°C. ±5V, VOUT unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS (SOT-23) (SOT-23) 1.5V 0.2V
0.75
1500 1750
UNITS V/°C
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Input Offset Shift Input Offset Voltage Drift (Note Input Bias Current
LT1800 ELECTRICAL CHARACTERISTICS
SYMBOL AVOL CMRR PSRR PARAMETER Input Offset Current Large-Signal Voltage Gain Common Mode Rejection Ratio Input Common Mode Range Power Supply Rejection Ratio Output Voltage Swing (Note 2.5V 10V, Load ISINK ISINK 20mA Load ISOURCE ISOURCE 20mA
denotes specifications which apply over temperature range 70°C. ±5V, VOUT unless otherwise noted.
CONDITIONS 0.2V 3.5V
UNITS V/mV V/mV
1100
Output Voltage Swing High (Note
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate Frequency 2MHz ±4V, Measured
denotes specifications which apply over temperature range -40°C 85°C. ±5V, VOUT unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage CONDITIONS (SOT-23) (SOT-23) 1.5V 0.2V 0.2V 3.5V 2.5V 10V, Load ISINK ISINK 10mA Load ISOURCE ISOURCE 10mA
0.75
2250 2000
UNITS V/°C V/mV V/mV
AVOL CMRR PSRR
Input Offset Shift Input Offset Voltage Drift (Note Input Bias Current Input Offset Current Large-Signal Voltage Gain Common Mode Rejection Ratio Input Common Mode Range Power Supply Rejection Ratio Output Voltage Swing (Note
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Output Voltage Swing High (Note
Short-Circuit Current Supply Current Amplifier Gain Bandwidth Product Slew Rate Frequency 2MHz ±4V, Measured
12.5
LT1800 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 diodes supply rails. differential input voltage exceeds 1.4V either input goes outside rails, input current should limited less than 10mA. Note heat sink required keep junction temperature below absolute maximum rating when output shorted indefinitely. Note LT1800C/LT1800I guaranteed functional over temperature range -40°C 85°C. Note LT1800C guaranteed meet specified performance from 70°C. LT1800C designed, characterized expected meet specified performance from -40°C 85°C tested sampled these temperatures. LT1800I 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.
TYPICAL PERFORMANCE CHARACTERISTICS
Distribution, (SO-8, Stage)
PERCENT UNITS -250 -150 INPUT OFFSET VOLTAGE
1800
Distribution, (SO-8, Stage)
PERCENT UNITS -2000 -1200 -400 1200 INPUT OFFSET VOLTAGE 2000
1800
Distribution, (SOT-23, Stage)
PERCENT UNITS -1250 -750 -250 INPUT OFFSET VOLTAGE 1250
1800
Distribution, (SOT-23, Stage)
PERCENT UNITS -2500 SUPPLY CURRENT (mA)
Supply Current Supply Voltage
OFFSET VOLTAGE 125°C
Offset Voltage Input Common Mode Voltage
-55°C TYPICAL PART
25°C
25°C
-100 -200 -300 -400 125°C
-55°C
-1500 -500 1500 INPUT OFFSET VOLTAGE
2500
1800
TOTAL SUPPLY VOLTAGE
1800
-500
INPUT COMMON MODE VOLTAGE
1800
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LT1800 TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current Common Mode Voltage
INPUT BIAS CURRENT -0.2 -0.4 -0.6 -0.8 -1.0 INPUT COMMON MODE VOLTAGE 25°C 125°C -55°C INPUT BIAS ACTIVE OUTPUT SATURATION VOLTAGE -0.1 ACTIVE
Input Bias Current Temperature
Output Saturation Voltage Load Current (Output Low)
125°C 0.01
-55°C
25°C
TEMPERATURE (°C)
1800
0.001 0.01
LOAD CURRENT (mA)
1800
1800
Output Saturation Voltage Load Current (Output High)
OUTPUT SATURATION VOLTAGE CHANGE OFFSET VOLTAGE (mV)
Minimum Supply Voltage
-55°C OUTPUT SHORT-CIRCUIT CURRENT (mA)
Output Short-Circuit Current Power Supply Voltage
25°C 125°C -55°C SINKING -55°C 125°C 25°C POWER SUPPLY VOLTAGE (±V) SOURCING
25°C -0.2 -0.4 -0.6
125°C
0.01 -55°C 25°C
125°C
0.001 0.01
LOAD CURRENT (mA)
1800
TOTAL SUPPLY VOLTAGE
1800
1800
Open-Loop Gain
2000 CHANGE OFFSET VOLTAGE 1600 1200 -400 -800 -1200 -1600 -2000 OUTPUT VOLTAGE
1800
Open-Loop Gain
CHANGE OFFSET VOLTAGE CHANGE OFFSET VOLTAGE 2000 1600 1200 -400 -800 -1200 -1600 -2000 OUTPUT VOLTAGE 2000 1600 1200 -400 -800
Open-Loop Gain
-1200 -1600 -2000 OUTPUT VOLTAGE
1800
1800
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LT1800 TYPICAL PERFORMANCE CHARACTERISTICS
Offset Voltage Output Current
CHANGE OFFSET VOLTAGE (mV) OFFSET VOLTAGE -0.5 25°C -1.0 -1.5 -2.0 OUTPUT CURRENT (mA) 125°C -55°C TYPICAL PART TIME AFTER POWER-UP (SECONDS) ±1.5V ±2.5V NOISE VOLTAGE (nV/Hz) ACTIVE 4.25V
Warm-Up Drift Time (LT1800S8)
Input Noise Voltage Frequency
ACTIVE 2.5V FREQUENCY (kHz)
1800
0.01
1800
1800
Input Current Noise Frequency
NOISE CURRENT (pA/Hz) ACTIVE 4.25V ACTIVE 2.5V OUTPUT NOISE VOLTAGE (nV) 2000
0.1Hz 10Hz Output Voltage Noise
1000
-1000
0.01
-2000 FREQUENCY (kHz)
1800
TIME (SECONDS)
1800
Gain Bandwidth Phase Margin Supply Voltage
GAIN BANDWIDTH (MHz) GAIN BANDWIDTH (MHz) PHASE MARGIN TOTAL SUPPLY VOLTAGE GAIN BANDWIDTH PRODUCT PHASE MARGIN (DEG) 25°C
Gain Bandwidth Phase Margin Temperature
PRODUCT ±2.5V PRODUCT PHASE MARGIN ±2.5V PHASE MARGIN TEMPERATURE (°C)
1800
PHASE MARGIN (DEG)
1800
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LT1800 TYPICAL PERFORMANCE CHARACTERISTICS
Slew Rate Temperature
±2.5V OPEN-LOOP GAIN (dB) TEMPERATURE
1800
Gain Phase Frequency
PHASE PHASE (DEG) GAIN ±2.5V FREQUENCY (MHz) -100
1800
SLEW RATE (V/s)
0.01
Gain Frequency
10pF GAIN (dB) GAIN (dB) FREQUENCY (MHz) ±2.5V
Gain Frequency
10pF ±2.5V 0.001 FREQUENCY (MHz) OUTPUT IMPEDANCE 0.01
Output Impedance Frequency
±2.5V
FREQUENCY (MHz)
1800
1800
1800
Common Mode Rejection Ratio Frequency
COMMON MODE REJECTION RATIO (dB) 0.01 POWER SUPPLY REJECTION RATIO (dB)
Power Supply Rejection Ratio Frequency
25°C NEGATIVE SUPPLY POSITIVE SUPPLY OVERSHOOT 0.01 FREQUENCY (MHz)
1800
Series Output Resistor Capacitive Load
1000 CAPACITIVE LOAD (pF) 10000
1800
FREQUENCY (MHz)
1800
0.001
1800fa
LT1800 TYPICAL PERFORMANCE CHARACTERISTICS
Series Output Resistor Capacitive Load
DISTORTION (dBc) OVERSHOOT 1000 CAPACITIVE LOAD (pF) 10000
1800
Distortion Frequency
-100 -110 0.01 VOUT 2VP-P DISTORTION (dBc)
Distortion Frequency
VOUT 2VP-P 150, -100
1800
150,
150,
FREQUENCY (MHz)
-110 0.01
FREQUENCY (MHz)
1800
Maximum Undistorted Output Signal Frequency
OUTPUT VOLTAGE SWING (VP-P) 100k FREQUENCY (Hz)
1800
Large-Signal Response
Small-Signal Response
50mV/DIV 1V/DIV
100ns/DIV
1800
50ns/DIV
1800
Large-Signal Response
Small-Signal Response
Output Overdriven Recovery
2V/DIV
50mV/DIV
1V/DIV VOUT 2V/DIV
200ns/DIV
1800
50ns/DIV
1800
100ns/DIV
1800
1800fa
LT1800 APPLICATIONS INFORMATION
Circuit Description LT1800 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 1.2V below positive 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. Also input stage, devices cancel bias current input pair. When Q1-Q2 active, current controlled same current Q1-Q2, thus base current nominally equal base current input devices. base current then mirrored devices Q17-Q19 cancel base current input devices Q1-Q2. pair complementary common emitter stages Q14/Q15 that enable output swing from rail rail constructs output stage. capacitors form local feedback loops that lower output impedance high frequency. These devices fabricated Linear Technology's proprietary high speed complementary bipolar process. Power Dissipation LT1800 amplifier offered small package, SOT-23, which thermal resistance 250°C/W, there need ensure that die's junction temperature should exceed 150°C. Junction temperature calculated from ambient temperature power dissipation thermal resistance power dissipation function supply voltage, output voltage load resistance. given supply voltage, worst-case power dissipation PDMAX occurs maximum supply current
ESDD2
ESDD1
ESDD4 ESDD3
VBIAS
BUFFER OUTPUT BIAS
1800
Figure LT1800 Simplified Schematic Diagram
1800fa
LT1800 APPLICATIONS INFORMATION
output voltage half either supply voltage maximum swing less than supply voltage). PDMAX given PDMAX ISMAX) (VS/2)2/RL Example: LT1800 SOT-23 package operating supplies driving load, worst-case power dissipation given PDMAX 4mA) (2.5)2/50 0.04 0.125 0.165W maximum ambient temperature that part allowed operate (PDMAX 250°C/W) 150°C (0.165W 250°C/W) 108°C Input Offset Voltage offset voltage will change depending upon which input stage active. input stage active from negative supply rail 1.2V positive supply rail, then input stage activated remaining input range positive supply rail during which stage remains inactive. offset voltage typically less than range that input stage active. Input Bias Current LT1800 employs patent-pending technique trim input bias current less than 250nA input common mode voltage 0.2V above negative supply rail 1.2V positive rail. input offset voltage input bias current LT1800 provide precision performance especially high source impedance applications. Output LT1800 deliver large output current, shortcircuit current limit around 50mA 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 several hundred total supply voltage less than 12.6V, absolute maximum rating, damage will occur device. 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 10mA. amplifier severely overdriven, external resistor should used limit overdrive current. LT1800's input stages also protected against large differential input voltage 1.4V higher pair back-back diodes D5/D8 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 each that connected power supplies shown Figure Capacitive Load LT1800 optimized high bandwidth, power precision applications. drive capacitive load about 75pF 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.
1800fa
LT1800 APPLICATIONS INFORMATION
Feedback Components When feedback resistors used gain, care must taken ensure that pole formed feedback resistors total capacitance inverting input does degrade stability. instance, LT1800 noninverting gain with resistors capacitance (part plus board) will probably ring transient response. pole formed 12.7MHz that will reduce phase margin degrees when crossover frequency amplifier around 20MHz. capacitor higher connected across feedback resistor will eliminate ringing oscillation.
TYPICAL APPLICATIONS
Single Supply Laser Driver Amplifier circuit front page this data sheet shows LT1800 used laser driver application. reasons LT1800 well suited this control task that 2.3V operation ensures that will awake during power-up operated before circuit otherwise cause significant current flow 2.1V threshold laser diode. Driving noninverting input LT1800 voltage will control turning high current transistor, FMMT619 laser diode. current equal VIN/R1 flows through laser diode. LT1800 offset voltage input bias current allows control current that flows through laser diode precisely. overall circuit volt V-to-I converter. Frequency compensation components selected fast zero-overshoot time domain response avoid overcurrent conditions laser. time domain response this circuit, measured given 500mV 230ns input pulse, also shown graphic front page. While circuit capable operation, laser diode transistor thermally limited power dissipation, they must operated duty cycles. Fast Current Sense Amplifier simple, fast current sense amplifier Figure suitable quickly responding out-of-range currents. circuit amplifies voltage across sense resistor gain resulting conversion gain 2V/A. -3dB bandwidth circuit 4MHz, uncertainty less than 4mA. minimum output voltage 60mV, corresponding 30mA. large-signal response circuit shown Figure
52.3
VOUT f-3dB 4MHz UNCERTAINTY VOS,
Figure Fast Current Sense
LT1800 VOUT
500mV/DIV
52.3
1800
50ns/DIV
1800
Figure Current Sense Amplifier Large-Signal Response
1800fa
LT1800 TYPICAL APPLICATIONS
Single Supply, 1MHz, Order Butterworth Filter circuit shown Figure makes voltage operation wide bandwidth LT1800 create accurate 1MHz order lowpass filter powered from supply. amplifiers configured inverting mode lowest distortion output swing rail-to-rail maximum dynamic range. Figure displays frequency response filter. Stopband attenuation greater than 100dB 50MHz. With 2.25VP-P, 250kHz input signal, filter harmonic distortion products less than -85dBc. Worst-case output offset voltage less than 6mV.
220pF 2.67k
47pF 1.1k 1.1k LT1800 2.21k 470pF 22pF
VS/2
1800
Figure 1MHz, Order Butterworth Filter
GAIN (dB) -100 -120 100k FREQUENCY (Hz) 100M
1800
Figure Frequency Response Filter
LT1800 VOUT
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LT1800 PACKAGE DESCRIPTION
Package 5-Lead Plastic TSOT-23
(Reference 05-08-1635)
0.62 0.95
2.90 (NOTE
1.22
3.85 2.62
2.80
1.50 1.75 (NOTE
RECOMMENDED SOLDER LAYOUT CALCULATOR 0.30 0.45 PLCS (NOTE
0.95
0.80 0.90 0.20 DATUM 1.00 0.01 0.10
0.09 0.20 (NOTE 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
0.30 0.50
1.90
TSOT-23 0302
1800fa
LT1800 PACKAGE DESCRIPTION
Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference 05-08-1610)
.050
.045 ±.005
.189 .197 (4.801 5.004) NOTE
.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
1800fa
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.
LT1800 TYPICAL APPLICATION
Power High Voltage Amplifier Certain materials used optical applications have characteristics that change presence strength electric field. voltage applied across these materials should precisely controlled maintain desired properties, sometimes high 100's volts. materials conductive represent capacitive load. circuit Figure shows LT1800 used amplifier capable 250V output swing providing precise
130V
4.99k
VOUT MATERIAL UNDER ELECTRIC FIELD 100pF
output voltage. When signal present, output sits about mid-supply. Transistors create bias voltages which forced into quiescent current degeneration resistors When transient signal arrives VIN, output moves causes current change depending signal polarity. current, limited clipping LT1800 output total emitter degeneration, mirrored output devices drive capacitive load. LT1800 output then returns near mid-supply, providing precise output voltage load. attention limit current output devices minimizes power dissipation thus allowing dense layout, inherits better reliability. Figure shows time domain response amplifier providing 200V output swing into 100pF load.
150V 39pF 200k 4.99k
Figure Power, High Voltage Amplifier
RELATED PARTS
PART NUMBER LT1399 LT1498/LT1499 LT1630/LT1631 LT1801/LT1802 LT1806/LT1807 LT1809/LT1810 DESCRIPTION Triple 300MHz Current Feedback Amplifier COMMENTS 0.1dB Gain Flatness 150MHz, Shutdown Dual/Quad 10MHz, Rail-to-Rail Input Output C-LoadOp Amps High Accuracy, 475V VOS(MAX), 4mV/°C Drift, Supply Current 2.2mA Dual/Quad 30MHz, 10V/s Rail-to-Rail Input Output Amps 80MHz, 25V/s Power Rail-to-Rail Input/Output Precision Amps Single/Dual 325MHz, 140V/s Rail-to-Rail Input Output Amps Single/Dual 180MHz Rail-to-Rail Input/Output Amps High Accuracy, 525V VOS(MAX), 70mA Output Current, Supply Current 4.4mA Amplifier Dual/Quad Version LT1800 High Accuracy, 550V VOS(MAX), Noise 3.5nV/Hz, Distortion -80dB 5MHz, Power-Down (LT1806) 350V/s Slew Rate, Distortion 5MHz, Power-Down (LT1809)
C-Load trademark Linear Technology Corporation.
Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
1630 McCarthy Blvd., Milpitas, 95035-7417
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2009
LT1800
2V/DIV
-130V
1800
VOUT/VIN -100 ±130V SUPPLY OUTPUT SWING ±128.8V OUTPUT OFFSET 20mV OUTPUT SHORT-CIRCUIT CURRENT RISE TIME 200V OUTPUT STEP SMALL-SIGNAL BANDWIDTH 150kHz SEMI MPSA42 SEMI MPSA92
VOUT 50V/DIV
10s/DIV
1800
Figure Large-Signal Time Domain Response Amplifier
1800fa 0709 PRINTED

LT®1800 power, high speed rail-to-rail input output operational amplif

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