DESCRIPTIO APPLICATI Note: applications requiring higher sle

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DESCRIPTIO APPLICATI Note: applications requiring higher sle

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LT1213/LT1214 28MHz, 12V/µs, Single Supply Dual Quad Precision Amps
DESCRIPTIO
APPLICATI
Note: applications requiring higher slew rate, LT1215/LT1216 data sheet. lower power lower slew rate, LT1211/LT1212 data sheet.
2.5V Full-Scale 12-Bit Systems Full-Scale 16-Bit Systems Active Filters Photodiode Amplifiers Current-to-Voltage Amplifiers Battery-Powered Systems
TYPICAL APPLICATI
200pF 390pF
Single Supply 3-Pole 1MHz Butterworth Filter
0.1µF
VOUT
GAIN (dB)
150pF
LT1213
4.12k MAXIMUM OUTPUT OFFSET 714µV 4.12k
1213/14 TA01
Slew Rate 12V/µs Gain-Bandwidth Product 28MHz Fast Settling 0.01% Step 200µV 500ns Step 1.1µs Excellent Precision Packages Input Offset Voltage 275µV Input Offset Voltage Drift 6µV/°C Input Offset Current 40nA Input Bias Current 200nA Open-Loop Gain 1200V/mV Single Supply Operation Input Voltage Range Includes Ground Output Swings Ground While Sinking Current Input Noise Voltage 10nV/Hz Input Noise Current 0.2pA/Hz Specified 3.3V, ±15V Large Output Drive Current 30mA Supply Current Amplifier 3.5mA Dual 8-Pin SO-8 Quad 14-Pin NARROW SO-16
LT1213 dual, single supply precision with 28MHz gain-bandwidth product 12V/µs slew rate. LT1214 quad version same amplifier. precision LT1213/LT1214 eliminates trims most systems while providing high frequency performance usually found single supply amplifiers. LT1213/LT1214 will operate supply greater than 2.5V less than total. These amplifiers specified single 3.3V, single ±15V supplies, only require 2.7mA quiescent supply current amplifier. inputs driven beyond supplies without damage phase reversal output. minimum output drive 30mA, ideal driving impedance loads.
0.45LSB 1.8LSB
Frequency Response
100k FREQUENCY (Hz)
1213/14 TA02
LT1213/LT1214 ABSOLUTE RATI
Storage Temperature Range 65°C 150°C Junction Temperature (Note Plastic Package (N8, 150°C Ceramic Package (J8) 175°C Lead Temperature (Soldering, sec). 300°C Total Supply Voltage Input Current ±15mA Output Short-Circuit Duration (Note Continuous Operating Temperature Range LT1213C/LT1214C 40°C 85°C LT1213M 55°C 125°C
PACKAGE/ORDER ATIO
VIEW
PACKAGE 8-LEAD CERAMIC
ORDER PART NUMBER LT1213CN8 LT1213ACN8 LT1213MJ8 LT1213AMJ8
PACKAGE 8-LEAD PLASTIC
TJMAX 175°C, 100°C/W TJMAX 150°C, 100°C/W
VIEW
ORDER PART NUMBER
LT1214CN
PACKAGE 14-LEAD PLASTIC
TJMAX 150°C, 70°C/W
AVAILABLE OPTIO
NUMBER AMPS (Dual) RANGE 40°C 85°C (25°C) 150µV 275µV 275µV 150µV 275µV 275µV (VOS 1.5µV/°C 3µV/°C 6µV/°C 1.5µV/°C 3µV/°C 6µV/°C CERAMIC PACKAGE PLASTIC LT1213ACN8 LT1213CN8 SURFACE MOUNT
(Dual) Four (Quad)
55°C 125°C 40°C 85°C
VIEW
ORDER PART NUMBER LT1213CS8 PART MARKING 1213 ORDER PART NUMBER LT1214CS
PACKAGE 8-LEAD PLASTIC SOIC
TJMAX 150°C, 150°C/W
VIEW
PACKAGE 16-LEAD PLASTIC SOIC
TJMAX 150°C, 100°C/W
LT1213CS8 LT1213AMJ8 LT1213MJ8 LT1214CN LT1214CS
LT1213/LT1214 ELECTRICAL CHARACTERISTICS
0.5V, VOUT 0.5V, 25°C, unless otherwise noted.
LT1213AC LT1213AM 4.39 4.30 3.92 0.004 0.033 0.475 0.001 LT1213C/LT1213M LT1214C 4.39 4.30 3.92 0.004 0.033 0.475 0.001
SYMBOL Time
PARAMETER Input Offset Voltage Long-Term Input Offset Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance (Note Input Capacitance Input Voltage Range
CONDITIONS
UNITS µV/Mo nVP-P nV/Hz nV/Hz pA/Hz pA/Hz V/mV V/µs
0.1Hz 10Hz 10Hz 1000Hz 10Hz 1000Hz Differential Mode Common Mode 1MHz
CMRR PSRR AVOL
Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note
Maximum Output Current Slew Rate Gain-Bandwidth Product Supply Current Amplifier Minimum Supply Voltage Full Power Bandwidth Rise Time, Fall Time Overshoot Propagation Delay Settling Time Open-Loop Output Resistance Total Harmonic Distortion
3.5V 2.5V 12.5V 0.05V 3.7V, Output High, Load Output High, ISOURCE Output High, ISOURCE 20mA Output Low, Load Output Low, ISINK Output Low, ISINK 20mA (Note 100kHz Single Supply, 2.5VP-P 90%, 100mV 100mV 100mV 0.01%, 0mA, 10MHz 1VRMS, 20Hz 20kHz
4.30 4.20 3.80
4.30 4.20 3.80 0.007 0.050 0.620
0.007 0.050 0.620
LT1213/LT1214 ELECTRICAL CHARACTERISTICS
0.5V, VOUT 0.5V, 70°C, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note CONDITIONS 8-Pin Package 14-Pin DIP, SOIC Package LT1213AC 4.33 4.25 3.96 0.005 0.036 0.370 LT1213C/LT1214C 4.20 4.33 4.10 4.25 3.84 3.96 0.005 0.008 0.036 0.055 0.370 0.530 UNITS µV/°C µV/°C V/mV
CMRR PSRR AVOL
0.1V 3.4V 2.5V 12.5V 0.05V 3.7V, Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
4.20 4.10 3.84
Supply Current Amplifier
0.008 0.055 0.530
0.5V, VOUT 0.5V, 40°C 85°C, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note CONDITIONS 8-Pin Package 14-Pin DIP, SOIC Package LT1213AC 4.25 4.16 3.89 0.006 0.037 0.380 LT1213C/LT1214C 4.15 4.25 4.00 4.16 3.72 3.89 0.006 0.009 0.037 0.060 0.380 0.550 UNITS µV/°C µV/°C V/mV
CMRR PSRR AVOL
0.2V 3.1V 2.5V 12.5V 0.05V 3.7V, Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
4.15 4.00 3.72
Supply Current Amplifier
0.009 0.060 0.550
LT1213/LT1214 ELECTRICAL CHARACTERISTICS
0.5V, VOUT 0.5V, 55°C 125°C, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note CONDITIONS LT1213AM 4.20 4.10 3.80 0.007 0.040 0.400 4.05 3.90 3.60 0.012 0.070 0.750 LT1213M 4.20 4.10 3.80 0.007 0.040 0.400 UNITS µV/°C V/mV
CMRR PSRR AVOL
0.4V 3.1V 2.5V 12.5V 0.05V 3.7V, Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
4.05 3.90 3.60
Supply Current Amplifier
0.012 0.070 0.750
+15V ELECTRICAL CHARACTERISTICS
±15V, VOUT 25°C, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Maximum Output Current Slew Rate Gain-Bandwidth Product Supply Current Amplifier Channel Separation Minimum Supply Voltage Full-Power Bandwidth Settling Time CONDITIONS LT1213AC LT1213AM 13.5 13.8 -15.0 15.3 1200 4000 13.7 13.9 -14.3 -14.5 ±1.2 LT1213C/LT1213M LT1214C 13.5 13.8 -15.0 15.3 1200 4000 13.7 13.9 -14.3 -14.5 ±1.2 ±2.0 UNITS V/mV V/µs
CMRR PSRR AVOL
-15V 13.5V ±18V ±10V, Output High, ISOURCE 20mA Output Low, ISINK 20mA (Note (Note 100kHz ±10V, Equal Split Supplies 20VP-P 0.01%,
±2.0
LT1213/LT1214 +15V ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Supply Current Amplifier CONDITIONS 8-Pin Package 14-Pin DIP, SOIC Package
±15V, VOUT 70°C, unless otherwise noted.
LT1213AC 13.5 -15.1 4000 14.0 14.6 LT1213C/LT1214C 13.4 13.5 -14.9 -15.1 1000 4000 13.8 14.0 14.4 14.6 UNITS µV/°C µV/°C V/mV
CMRR PSRR AVOL
-14.9V 13.4V ±18V ±10V, Output High, ISOURCE 15mA Output Low, ISINK 15mA
13.4 -14.9 1000 13.8 14.4
±15V, VOUT 40°C 85°C, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Supply Current Amplifier CONDITIONS 8-Pin Package 14-Pin DIP, SOIC Package LT1213AC 13.2 -15.0 4000 13.9 14.6 LT1213C/LT1214C 13.1 13.2 -14.8 -15.0 1000 4000 13.7 13.9 14.4 14.6 UNITS µV/°C µV/°C V/mV
CMRR PSRR AVOL
14.8V 13.1V ±18V ±10V, Output High, ISOURCE 15mA Output Low, ISINK 15mA
13.1 -14.8 1000 13.7 14.4
±15V, VOUT 55°C 125°C, unless otherwise noted.
SYMBOL PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Supply Current Amplifier CONDITIONS LT1213AM 13.2 -14.8 1100 13.8 -14.5 13.1 -14.6 13.6 -14.2 LT1213M 13.2 -14.8 1100 13.8 -14.5 UNITS µV/°C V/mV
CMRR PSRR AVOL
14.6V 13.1V ±15V ±10V, Output High, ISOURCE 15mA Output Low, ISINK 15mA
13.1 -14.6 13.6 -14.2
LT1213/LT1214 3.3V ELECTRICAL CHARACTERISTICS
3.3V, 0.5V, VOUT 0.5V, 25°C, unless otherwise noted. (Note
LT1213AC LT1213AM 2.69 2.60 2.22 0.004 0.007 0.033 0.050 0.475 0.620 LT1213C/LT1213M LT1214C 2.60 2.69 2.50 2.60 2.10 2.22 0.004 0.007 0.033 0.050 0.475 0.620 SYMBOL PARAMETER Input Offset Voltage Input Voltage Range (Note CONDITIONS 2.60 2.50 2.10 UNITS
Maximum Output Voltage Swing Output High, Load Output High, ISOURCE Output High, ISOURCE 20mA Output Low, Load Output Low, ISINK Output Low, ISINK 20mA Maximum Output Current
3.3V, 0.5V, VOUT 0.5V, 70°C, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage Input Voltage Range (Note CONDITIONS 2.50 2.40 2.14 LT1213AC 2.63 2.55 2.26 0.005 0.037 0.400 LT1213C/LT1214C 2.50 2.63 2.40 2.55 2.14 2.26 0.005 0.008 0.037 0.055 0.400 0.530 UNITS
Maximum Output Voltage Swing Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
0.008 0.055 0.530
3.3V, 0.5V, VOUT 0.5V, 40°C 85°C, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage Input Voltage Range (Note CONDITIONS 2.45 2.30 2.02 LT1213AC 2.55 2.46 2.19 0.006 0.040 0.410 LT1213C/LT1214C 2.45 2.55 2.30 2.46 2.02 2.19 0.006 0.009 0.040 0.060 0.410 0.550 UNITS
Maximum Output Voltage Swing Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
0.009 0.060 0.550
3.3V, 0.5V, VOUT 0.5V, 55°C 125°C, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage Input Voltage Range (Note CONDITIONS 2.35 2.20 1.90 LT1213AM 2.50 2.40 2.10 0.007 0.012 0.040 0.070 0.500 0.750 2.35 2.20 1.90 LT1213M 2.50 2.40 2.10 0.007 0.040 0.500 UNITS
Maximum Output Voltage Swing Output High, Load Output High, ISOURCE Output High, ISOURCE 15mA Output Low, Load Output Low, ISINK Output Low, ISINK 15mA
0.012 0.070 0.750
LT1213/LT1214
ELECTRICAL CHARACTERISTICS
Note heat sink required keep junction temperature below absolute maximum when output shorted indefinitely. Note calculated from ambient temperature power dissipation according following formulas: LT1213MJ8, LT1213AMJ8: 100°C/W) LT1213CN8, LT1213ACN8: 100°C/W) LT1213CS8: 150°C/W) LT1214CN: 70°C/W) LT1214CS: 100°C/W) Note This parameter 100% tested. Note Guaranteed correlation 3.3V ±15V tests. Note LT1213/LT1214 tested quality-assurance sampled 40°C 85°C. These specifications guaranteed design, correlation and/or inference from 55°C, 0°C, 25°C, 70°C and/or 125°C tests. Note Slew rate measured between ±8.5V output swing ±10V ±15V supplies. Note Most LT1213/LT1214 electrical characteristics change very little with supply voltage. tables characteristics listed 3.3V table. Note Guaranteed correlation ±15V tests. Note Guaranteed correlation 3.3V tests.
TYPICAL PERFOR CHARACTERISTICS
Distribution Input Offset Voltage
PERCENT UNITS
LT1213 PACKAGE LT1213 PACKAGE
PERCENT UNITS
-350 -250 -150 INPUT OFFSET VOLTAGE (µV)
PERCENT UNITS
Distribution Input Offset Voltage
PERCENT UNITS
LT1213 PACKAGE LT1214 PACKAGE LT1214 PACKAGE
PERCENT UNITS
PERCENT UNITS
-350 -250 -150 INPUT OFFSET VOLTAGE (µV)
1213/14
Distribution Offset Voltage Drift with Temperature
LT1213 PACKAGE LT1213 PACKAGE
Distribution Input Offset Voltage
±15V -700 -500 -300 -100 INPUT OFFSET VOLTAGE (µV) LT1213 PACKAGE LT1213 PACKAGE
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
1213/14
1213/14
Distribution Offset Voltage Drift with Temperature
LT1213 PACKAGE LT1214 PACKAGE LT1214 PACKAGE
Distribution Input Offset Voltage
±15V LT1213 PACKAGE LT1214 PACKAGE LT1214 PACKAGE
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
1213/14
-700 -500 -300 -100 INPUT OFFSET VOLTAGE (µV)
1213/14
1213/14
LT1213/LT1214
TYPICAL PERFOR CHARACTERISTICS
Voltage Gain Frequency
20pF
GAIN-BANDWIDTH PRODUCT (MHz)
VOLTAGE GAIN (dB)
VOLTAGE GAIN (dB)
±15V 100k 100M FREQUENCY (Hz)
1213/14
Slew Rate Temperature
25°C ±15V
SLEW RATE (V/µs)
SLEW RATE (V/µs)
TEMPERATURE (°C)
OVERSHOOT
Undistorted Output Swing Frequency,
OUTPUT SWING (VP-P)
TOTAL HARMONIC DISTORTION NOISE
OUTPUT SWING (VP-P)
100k FREQUENCY (Hz)
1213/14
Voltage Gain, Phase Frequency
PHASE GAIN ±15V PHASE SHIFT (DEG) 20pF 100k ±15V 100M
1213/14
Gain-Bandwidth Product, Phase Margin Supply Voltage
25°C, 125°C -55°C -55°C 25°C
PHASE MARGIN (DEG)
125°C TOTAL SUPPLY VOLTAGE
FREQUENCY (Hz)
1213/14
Slew Rate Supply Voltage
25°C TOTAL SUPPLY VOLTAGE -55°C 125°C
Capacitive Load Handling
CAPACITIVE LOAD (pF) 1000
1213/14
1213/14
Undistorted Output Swing Frequency, ±15V
Total Harmonic Distortion Noise Frequency
3VP-P 0.01
±15V
0.001
1213/14
100k FREQUENCY (Hz)
1213/14
0.0001
FREQUENCY (Hz)
100k
1213/14
LT1213/LT1214
TYPICAL PERFOR CHARACTERISTICS
Open-Loop Voltage Gain Supply Voltage
OPEN-LOOP VOLTAGE GAIN (V/mV)
SATURATION VOLTAGE, VOUT
-55°C
INPUT, 5µV/DIV
25°C
125°C
TOTAL SUPPLY VOLTAGE
Voltage Gain Load Resistance
25°C
OPEN-LOOP VOLTAGE GAIN (V/mV)
±15V
INPUT, 5µV/DIV
SATURATION VOLTAGE, VOUT (mV)
OUTPUT
1213/14
LOAD RESISTANCE
1213/14
Channel Separation Frequency
100k FREQUENCY (Hz)
1213/14
OUTPUT SHORT-CIRCUIT CURRENT (mA)
±15V 25°C
CHANNEL SEPARATION (dB)
SOURCING
OUTPUT IMPEDANCE
1213/14
Open-Loop Gain,
Positive Output Saturation Voltage Temperature
ISOURCE 20mA ISOURCE 10mA ISOURCE ISOURCE 10µA
OUTPUT
1213/14
TEMPERATURE (°C)
1213/14
Open-Loop Gain, ±15V
1000
Negative Output Saturation Voltage Temperature
ISINK 30mA ISINK 10mA ISINK
ISINK 10µA
TEMPERATURE (°C)
1213/14
Output Short-Circuit Current Temperature
1000
Output Impedance Frequency
±15V
±15V SOURCING SINKING
TEMPERATURE (°C)
0.01
100k FREQUENCY (Hz)
1213/14
1213/14
LT1213/LT1214
TYPICAL PERFOR CHARACTERISTICS
Small-Signal Response
20mV/DIV
50ns/DIV
1213/14
±15V Small-Signal Response
20mV/DIV
±15V
50ns/DIV
1213/14
Settling
500mV/DIV
OUTPUT STEP
2V/DIV
100ns/DIV
1213/14
Large-Signal Response
Large-Signal Response
200ns/DIV
1213/14
200ns/DIV 20pF
1213/14
±15V Large-Signal Response
±15V Large-Signal Response
-10V
-10V
±15V
1µs/DIV
1213/14
±15V
1µs/DIV
1213/14
±15V Settling
1213/14
Settling Time 0.01% Output Step
±15V INVERTING NONINVERTING
250µV/DIV
1mV/DIV
INVERTING NONINVERTING
±15V
200ns/DIV
1000 1100 SETTLING TIME (ns)
1213/14
LT1213/LT1214
TYPICAL PERFOR CHARACTERISTICS
Supply Current Supply Votage
SUPPLY CURRENT AMPLIFIER (mA)
SUPPLY CURRENT AMPLIFIER (mA)
125°C 25°C
±15V
CHANGE OFFSET VOLTAGE (µV)
-55°C
SUPPLY VOLTAGE
1213/14
Input Bias Current Temperature
INPUT BIAS CURRENT (nA) INPUT BIAS CURRENT (nA)
-100 -120 -140 -160 -180 125°C -55°C
25°C
COMMON-MODE RANGE
TEMPERATURE (°C)
Input Noise Current, Noise Voltage Density Frequency
INPUT NOISE VOLTAGE DENSITY (nV/Hz)
COMMON-MODE REJECTION RATIO (dB)
VOLTAGE NOISE CURRENT NOISE 100k
1213/14
POWER SUPPLY REJECTION RATIO (dB)
±15V 25°C
FREQUENCY (Hz)
1213/14
Supply Current Temperature
Warm-Up Drift Time
TYPICAL AMPLIFIERS TIME AFTER POWER-UP (SEC)
1213/14
TEMPERATURE (°C)
1213/14
Input Bias Current Common-Mode Voltage
Common-Mode Range Temperature
-200
COMMON-MODE VOLTAGE
1213/14
TEMPERATURE (°C)
1213/14
Common-Mode Rejection Ratio Frequency
INPUT NOISE CURRENT DENSITY (pA/Hz)
Input Referred Power Supply Rejection Ratio Frequency
NEGATIVE SUPPLY POSITIVE SUPPLY ±15V
100k FREQUENCY (Hz)
1213/14
100k FREQUENCY (Hz)
1213/14
LT1213/LT1214
APPLICATI
Supply Voltage
ATIO
LT1213/LT1214 amps fully functional internal bias circuits regulation with 2.2V supply. amplifiers will continue function with little 1.5V, although input common-mode range phase margin about gone. minimum operating supply voltage guaranteed PSRR tests which done with input common mode equal 500mV minimum supply voltage 2.5V. LT1213/LT1214 guaranteed over full 55°C 125°C range with minimum supply voltage 2.5V. positive supply LT1213/LT1214 should bypassed with small capacitor (about 0.01µF) within inch pin. When driving heavy loads good settling time, additional 4.7µF capacitor should used. When using split supplies, same true negative supply pin. Power Dissipation LT1213/LT1214 amplifiers combine high speed large output current drive into very small packages. Because these amplifiers work over very wide supply range, possible exceed maximum junction temperature under certain conditions. insure that LT1213/ LT1214 used properly, calculate worst case power dissipation, define maximum ambient temperature, select appropriate package then calculate maximum junction temperature. worst case amplifier power dissipation total quiescent current times total power supply voltage plus power load. quiescent supply current LT1213/LT1214 positive temperature coefficient. maximum supply current each amplifier 125°C given following formula: ISMAX 0.048 total supply voltage. power load function output voltage, supply voltage load resistance. worst case occurs when output voltage half supply, that far, maximum value cannot reach half supply.
example, calculate worst case power dissipation while operating ±15V supplies driving load. ISMAX 0.048 5.4mA PDMAX ISMAX VOMAX) VOMAX/RL PDMAX 5.4mA (15V 7.5V) 7.5V/500 0.162 0.113 0.275 Watt this dual LT1213, total power package twice that, 0.550W. calculate much temperature will rise above ambient. total power dissipation times thermal resistance package gives amount temperature rise. this example, SO-8 surface mount package, thermal resistance 150°C/W junction-to-ambient still air. Temperature Rise PDMAX 0.550W 150°C/W 82.5°C maximum junction temperature allowed plastic package 150°C. Therefore maximum ambient allowed maximum junction temperature less temperature rise. Maximum Ambient 150°C 82.5°C 67.5°C That means SO-8 dual operated below 67.5°C ±15V supplies with load. guideline help selection LT1213/ LT1214, following table describes maximum supply voltage that used with each part based following assumptions: maximum ambient 70°C 125°C depending part rating. load including feedback resistors. output anywhere between supplies.
PART LT1213MJ8 LT1213CN8 LT1213CS8 LT1214CN LT1214CS SUPPLIES 18.0V ±14.1V 23.7V ±18.0V 18.7V ±14.7V 19.5V ±15.4V 15.8V ±12.2V POWER 500mW 800mW 533mW 1143mW 800mW
LT1213/LT1214
APPLICATI
Inputs Typically room temperature, inputs LT1213/ LT1214 common mode 400mV below ground within 1.2V positive supply with amplifier still functional. However, input bias current offset voltage will shift shown characteristic curves. full precision performance, common-mode range should limited between ground 1.5V below positive supply. When either inputs taken below ground more than about 700mV, that input current will increase dramatically. current limited internal resistors between input pins diodes each supply. output will remain phase reversal) inputs 1.3V below ground output does have sink current, such single supply system with load ground, there phase reversal inputs below ground. There clamps across inputs LT1213/ LT1214 therefore each input forced voltage between supplies. input current will remain constant about 100nA over most this range. When input gets closer than 1.5V positive supply, that input current will gradually decrease zero until input goes above supply, then will increase previously mentioned diodes. inverting input held more positive than noninverting input 200mV more, while same time noninverting input within 300mV ground then supply current will increase noninverting input current will increase about 10µA. This should kept mind comparator applications where inverting input stays above ground noninverting input near ground Output output LT1213/LT1214 will swing within 0.61V positive supply with load. open-loop output resistance, when output driven hard into
ATIO
positive rail, about output starts source current; this resistance drops about current increases. Therefore when output sources 1mA, output will swing within 0.7V positive supply. While sourcing 30mA, within 1.25V positive supply. output LT1213/LT1214 will swing within negative supply while sinking zero current. Thus, typical single supply application with load going ground, output will within ground. open-loop output resistance when output driven hard into negative rail about currents reduces about high currents. Therefore when output sinks 1mA, output about 33mV above negative supply while sinking 30mA, about 690mV above output LT1213/LT1214 reverse-biased diodes each supply. output forced beyond either supply, unlimited currents will flow. current transient limited several hundred damage will occur. Feedback Components Because input currents LT1213/LT1214 less than 200nA, possible high value feedback resistors gain. However, care must taken insure that pole that formed feedback resistors input capacitance does degrade stability amplifier. example, single supply, noninverting gain with resistors, LT1213/LT1214 will probably oscillate. This because amplifier goes open-loop 6MHz (6dB gain) phase margin. feedback resistors 10pF input capacitance generate pole 3MHz that introduces phase shift 6MHz! solution simple, lower values resistors feedback capacitor 10pF more.
LT1213/LT1214
APPLICATI ATIO
Comparator Applications Sometimes desirable comparator. When operating LT1213/LT1214 single 3.3V supply, output interfaces directly with most CMOS logic. response time LT1213/LT1214 strong function amount input overdrive shown
LT1213 Comparator Response 20mV, 10mV, 5mV, Overdrives LT1213 Comparator Response 20mV, 10mV, 5mV, Overdrives
OUTPUT OUTPUT INPUT (mV) 5µs/DIV
1213/14 AI01
INPUT (mV)
PLIFIED SCHE ATIC
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.
following photos. These amplifiers unity-gain stable amps fast comparators, therefore, logic being driven oscillate long transition time. output speeded adding 20mV more hysteresis (positive feedback), offset then function input direction.
5µs/DIV
1213/14 AI02
BIAS
1213/14
LT1213/LT1214
TYPICAL APPLICATI
Instrumentation Amplifier with Guard/Shield Driver Input Bias Current Cancellation
0.1µF
GUARD
LT1214
LT1214 22pF 1020
EACH INPUT BIAS CURRENT (mA)
INPUTS
GUARD
COMMON MODE DIFFERENTIAL BANDWIDTH 2MHz 170ms
LT1214
GAIN
Ground Current Sense Amplifier
LOAD 0.1µF
LT1213 0.05 1V/A OFFSET 5.5mA BANDWIDTH 500kHz
1910 100pF
PACKAGE DESCRIPTIO
package description please other Linear Technology data sheets databooks.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
1020
10k**
INPUT BIAS CURRENT COMMON-MODE VOLTAGE
5000pF
LT1214
OUTPUT
0.01
COMMON-MODE VOLTAGE
1213/14 TA03b
1213/14 TA03a
TRIM INPUT BIAS CURRENT TRIM CMRR
Difference Amplifier with Wide Input Common-Mode Range
3.3V 1.2V LT1004-1.2 0.1µF
LT1213
1213/14 TA04
GAIN VOUT VREF VIN(DIF) ±10V COMMON-MODE RANGE BANDWIDTH 3MHz
1213/14 TA05
LTC/GP 0793
LINEAR TECHNOLOGY CORPORATION 1993

DESCRIPTIO APPLICATI Note: applications requiring higher sle

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