Ultralow Drift Op Amp AD707 CONNECTION DIAGRAMS
FEATURES Very High DC Precision 15 V max Offset Voltage 0.1 V/؇C max Offset Voltage Drift 0.35 V p max Voltage Noise (0.1 Hz to 10 Hz} 8 V/V min Open-Loop Gain 130 dB min CMRR 120 dB min PSRR 1 nA max Input Bias Current
TO-99 (H) Package NULL 8
AC Performance 0.3 V/s Slew Rate 0.9 MHz Closed-Loop Bandwidth Dual Version: AD708 Available in Tape and Reel in Accordance with EIA-481A Standard
–VS NC = NO CONNECT NOTE: PIN 4 CONNECTED TO CASE
Plastic (N) and Cerdip (Q) Packages 8 NULL
SOIC (R) Package NULL
The AD707 is a low cost, high precision op amp with state-ofthe-art performance that makes it ideal for a wide range of precision applications. The offset voltage spec of less than 15 µV is the best available in a bipolar op amp, and maximum input offset current is 1.0 nA. The top grade is the first bipolar monolithic op amp to offer a maximum offset voltage drift of 0.1 µV/°C, and offset current drift and input bias current drift are both specified at 25 pA/°C maximum. The AD707’s open-loop gain is 8 V/µV minimum over the full ± 10 V output range when driving a 1 kΩ load. Maximum input voltage noise is 350 nV p (0.1 Hz to 10 Hz). CMRR and PSRR are 130 dB and 120 dB minimum, respectively. The AD707 is available in versions specified over commercial, industrial and military temperature ranges. It is offered in 8-pin plastic mini-DIP, small outline (SOIC), hermetic cerdip and hermetic TO-99 metal can packages. Chips, MIL-STD-883B, Rev. C, and tape & reel parts are also available.
6 OUTPUT 5 NC
NC = NO CONNECT
NULL +VS OUTPUT
4 AD707 5
NC = NO CONNECT
1. The AD707’s 13 V/µV typical open-loop gain and 140 dB typical common-mode rejection ratio make it ideal for precision instrumentation applications. 2. The precision of the AD707 makes tighter error budgets possible at a lower cost. 3. The low offset voltage drift and low noise of the AD707 allow the designer to amplify very small signals without sacrificing overall system performance. 4. The AD707 can be used where chopper amplifiers are required, but without the inherent noise and application problems. 5. The AD707 is an improved pin-for-pin replacement for the LT1001.
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