LT1792 Datasheet | Linear Technology

LT1792 Low Noise, Precision, JFET Input Op Amp Features s s s s s s DESCRIPTIO 100% Tested Low Voltage Noise: 6n V/√Hz Max A Grade 100% Temperature Tested Voltage Gain: 1.2 Million Min Offset Voltage Over Temp: 800µV Max Gain-Bandwidth Product: 5.6MHz Typ Guaranteed Specifications with ±5V Supplies The LT®1792 achieves a new standard of excellence in noise performance for a JFET op amp. The 4.2n V/√Hz voltage noise bined with low current noise and picoampere bias currents make the LT1792 an ideal choice for amplifying low level signals from high impedance capacitive transducers. The LT1792 is unconditionally stable for gains of 1 or more, even with load capacitances up to 1000p F. Other key Features are 600µV VOS and a voltage gain of over 4 million. Each individual amplifier is 100% tested for voltage noise, slew rate and gain bandwidth. The design of the LT1792 has been optimized to achieve true precision performance with an industry standard pinout in the SO-8 package. Specifications are also provided for ± 5V supplies. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s s s s Photocurrent Amplifiers Hydrophone Amplifiers High Sensitivity Piezoelectric Accelerometers Low Voltage and Current Noise Instrumentation Amplifier Front Ends Two and Three Op Amp Instrumentation Amplifiers Active Filters TYPICAL APPLICATIO Low Noise Hydrophone Amplifier with DC Servo 5V TO 15V 2 1k Hz Input Noise Voltage Distribution VS = ±15V TA = 25°C 270 OP AMPS TESTED R1- 100M R3 3.9k - + 7 6 C2 0.47µF R4 1M R5 1M OUTPUT LT1792 4 PERCENT OF UNITS (%) R2 200Ω C1- - 5V TO - 15V CT HYDROPHONE R6 100k LT1097 3 R7 1M DC OUTPUT ≤ 2.5m V FOR TA < 70°C OUTPUT VOLTAGE NOISE = 128n V/√Hz AT 1k Hz (GAIN = 20) C1 ≈ CT ≈ 100p F TO 5000p F; R4C2 > R8CT; - OPTIONAL - R8 100M 0 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 INPUT VOLTAGE NOISE (n V/√Hz) 1792 TA02 1792...