Datasheet LT1055, LT1056 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Precision, High Speed, JFET Input Operational Amplifiers |
| Pages / Page | 20 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Distribution of … |
| File Format / Size | PDF / 329 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Distribution of Input Offset Voltage
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LT1055/LT1056 Precision, High Speed, JFET Input Operational Amplifiers
FEATURES DESCRIPTION
n Guaranteed Offset Voltage: 150µV Max The LT®1055/LT1056 JFET input operational amplifiers –55°C to 125°C: 500µV Max combine precision specifications with high speed per- n Guaranteed Drift: 4µV/°C Max formance. n Guaranteed Bias Current For the first time, 16V/µs slew rate and 6.5MHz gain 70°C: 150pA Max bandwidth product are simultaneously achieved with offset 125°C: 2.5nA Max voltage of typically 50µV, 1.2µV/°C drift, bias currents of n Guaranteed Slew Rate: 12V/µs Min 40pA at 70°C and 500pA at 125°C. n Available in 8-Pin PDIP and SO Packages The 150µV maximum offset voltage specification is the best available on any JFET input operational amplifier.
APPLICATIONS
The LT1055 and LT1056 are differentiated by their operating n Precision, High Speed Instrumentation currents. The lower power dissipation LT1055 achieves n Logarithmic Amplifiers lower bias and offset currents and offset voltage. The ad- n D/A Output Amplifiers ditional power dissipation of the LT1056 permits higher n Photodiode Amplifiers slew rate, bandwidth and faster settling time with a slight n Voltage-to-Frequency Converters sacrifice in DC performance. n Frequency-to-Voltage Converters n Fast, Precision Sample-and-Hold The voltage-to-frequency converter shown below is one of the many applications which utilize both the precision and high speed of the LT1055/LT1056. For a JFET input op amp with 23V/µs guaranteed slew rate, refer to the LT1022 data sheet. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Distribution of Input Offset Voltage 1Hz to 10kHz Voltage-to-Frequency Converter (H Package)
4.7k 3M 15V 140 VS = ±15V 50% TO ±60µV 0.001 (POLYSTYRENE) T 120 A = 25°C 634 UNITS TESTED 10kHz FROM THREE RUNS TRIM 100 15V OUTPUT 0V TO 10V 5k 75k 2 – 1Hz TO 10kHz INPUT 7 0.005% 80 6 1.5k LINEARITY LT1056 0.1µF 22k 3 60 + 4 –15V NUMBER OF UNITS 40 33pF LM329 3.3M 2N3906 20 = 1N4148 0.1µF 0 *1% FILM –400 –200 0 200 400 –15V THE LOW OFFSET VOLTAGE OF LT1056 CONTRIBUTES ONLY 0.1Hz OF ERROR INPUT OFFSET VOLTAGE (µV) WHILE ITS HIGH SLEW RATE PERMITS LT1055/56 TA02 10kHz OPERATION. LT1055/56 TA01 10556fd For more information www.linear.com/LT1055 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Simplified schematic Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n Guaranteed Offset Voltage: 150µV Max The LT®1055/LT1056 JFET input operational amplifiers –55°C to 125°C: 500µV Max combine precision specifications with high speed per- n Guaranteed Drift: 4µV/°C Max formance. n Guaranteed Bias Current For the first time, 16V/µs slew rate and 6.5MHz gain 70°C: 150pA Max bandwidth product are simultaneously achieved with offset 125°C: 2.5nA Max voltage of typically 50µV, 1.2µV/°C drift, bias currents of n Guaranteed Slew Rate: 12V/µs Min 40pA at 70°C and 500pA at 125°C. n Available in 8-Pin PDIP and SO Packages The 150µV maximum offset voltage specification is the best available on any JFET input operational amplifier.
APPLICATIONS
The LT1055 and LT1056 are differentiated by their operating n Precision, High Speed Instrumentation currents. The lower power dissipation LT1055 achieves n Logarithmic Amplifiers lower bias and offset currents and offset voltage. The ad- n D/A Output Amplifiers ditional power dissipation of the LT1056 permits higher n Photodiode Amplifiers slew rate, bandwidth and faster settling time with a slight n Voltage-to-Frequency Converters sacrifice in DC performance. n Frequency-to-Voltage Converters n Fast, Precision Sample-and-Hold The voltage-to-frequency converter shown below is one of the many applications which utilize both the precision and high speed of the LT1055/LT1056. For a JFET input op amp with 23V/µs guaranteed slew rate, refer to the LT1022 data sheet. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Distribution of Input Offset Voltage 1Hz to 10kHz Voltage-to-Frequency Converter (H Package)
4.7k 3M 15V 140 VS = ±15V 50% TO ±60µV 0.001 (POLYSTYRENE) T 120 A = 25°C 634 UNITS TESTED 10kHz FROM THREE RUNS TRIM 100 15V OUTPUT 0V TO 10V 5k 75k 2 – 1Hz TO 10kHz INPUT 7 0.005% 80 6 1.5k LINEARITY LT1056 0.1µF 22k 3 60 + 4 –15V NUMBER OF UNITS 40 33pF LM329 3.3M 2N3906 20 = 1N4148 0.1µF 0 *1% FILM –400 –200 0 200 400 –15V THE LOW OFFSET VOLTAGE OF LT1056 CONTRIBUTES ONLY 0.1Hz OF ERROR INPUT OFFSET VOLTAGE (µV) WHILE ITS HIGH SLEW RATE PERMITS LT1055/56 TA02 10kHz OPERATION. LT1055/56 TA01 10556fd For more information www.linear.com/LT1055 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Simplified schematic Package Description Revision History Typical Application Related Parts
