LT1113 Dual Low Noise, Precision, JFET Input Op Amp FeaTuresDescripTion n 100% Tested Low Voltage Noise: 6nV/√Hz Max The LT®1113 achieves a new standard of excellence in noise n SO-8 Package Standard Pinout performance for a dual JFET op amp. The 4.5nV/√Hz 1kHz n Voltage Gain: 1.2 Million Min noise combined with low current noise and picoampere n Offset Voltage: 1.5mV Max bias currents makes the LT1113 an ideal choice for am- n Offset Voltage Drift: 15µV/°C Max plifying low level signals from high impedance capacitive n Input Bias Current, Warmed Up: 450pA Max transducers. n Gain Bandwidth Product: 5.6MHz Typ The LT1113 is unconditionally stable for gains of 1 or n Guaranteed Specifications with ±5V Supplies more, even with load capacitances up to 1000pF. Other n Guaranteed Matching Specifications key features are 0.4mV VOS and a voltage gain of 4 mil- lion. Each individual amplifier is 100% tested for voltage applicaTions noise, slew rate and gain bandwidth. n Photocurrent Amplifiers The design of the LT1113 has been optimized to achieve n Hydrophone Amplifiers true precision performance with an industry standard n High Sensitivity Piezoelectric Accelerometers pinout in the S0-8 package. A set of specifications are n Low Voltage and Current Noise Instrumentation provided for ±5V supplies and a full set of matching speci- Amplifier Front Ends fications are provided to facilitate the use of the LT1113 in n Two and Three Op Amp Instrumentation Amplifiers matching dependent applications such as instrumentation n Active Filters amplifier front ends. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and C-Load is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical applicaTionLow Noise Hydrophone Amplifier with DC Servo1kHz Input Noise Voltage Distribution R3 5V TO 15V V R1* 40 S = ±15V 3.9k T 100M A = 25°C 2 – 8 138 S8 1/2 1 30 276 OP AMPS TESTED LT1113 OUTPUT 3 + C1* C2 R2 4 0.47µF 200Ω 20 –5V TO –15V R4 R8 – 6 1M CT PERCENT OF UNITS (%) 100M R6 10 100k HYDRO- 7 1/2 R5 PHONE LT1113 + 5 1M R7 1M 03.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 INPUT VOLTAGE NOISE (nV/√Hz) DC OUTPUT ≤ 2.5mV FOR TA < 70°C 1113 TA02 OUTPUT VOLTAGE NOISE = 128nV/√Hz AT 1kHz (GAIN = 20) 1113 TA01 C1 ≈ CT ≈ 100pF TO 5000pF; R4C2 > R8CT; *OPTIONAL 1113fc For more information www.linear.com/LT1113 1
