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AD743KR-16 Datasheet

Part NameDescriptionManufacturer
AD743KR-16 Ultralow Noise BiFET Op Amp ADI
Analog Devices ADI
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PRODUCT DESCRIPTION
The AD743 is an ultralow noise precision, FET input, monolithic operational amplifier. It offers a combination of the ultralow voltage noise generally associated with bipolar input op amps and the very low input current of a FET-input device. Furthermore, the AD743 does not exhibit an output phase reversal when the negative common-mode voltage limit is exceeded.
The AD743’s guaranteed, maximum input voltage noise of 4.0 nV/√Hz at 10 kHz is unsurpassed for a FET-input monolithic op amp, as is the maximum 1.0 µV p-p, 0.1 Hz to 10 Hz noise. The AD743 also has excellent dc performance with 250 pA maximum input bias current and 0.5 mV maximum offset voltage.
The AD743 is specifically designed for use as a preamp in capacitive sensors, such as ceramic hydrophones. It is available in five performance grades. The AD743J and AD743K are rated over the commercial temperature range of 0°C to +70°C. The AD743A and AD743B are rated over the industrial temperature range of –40°C to +85°C. The AD743S is rated over the military temperature range of –55°C to +125°C and is available processed to MIL-STD-883B, Rev. C.
The AD743 is available in 8-pin plastic mini-DIP, 8-pin cerdip, 16-pin SOIC, or in chip form.

FEATURES
   ULTRALOW NOISE PERFORMANCE
      2.9 nV/√Hz at 10 kHz
      0.38 mV p-p, 0.1 Hz to 10 Hz
      6.9 fA/√Hz Current Noise at 1 kHz
  
   EXCELLENT DC PERFORMANCE
      0.5 mV max Offset Voltage
      250 pA max Input Bias Current
      1000 V/mV min Open-Loop Gain
  
   AC PERFORMANCE
      2.8 V/ms Slew Rate
      4.5 MHz Unity-Gain Bandwidth
      THD = 0.0003% @ 1 kHz
      Available in Tape and Reel in Accordance with
         EIA-481A Standard
  
APPLICATIONS
   Sonar Preamplifiers
   High Dynamic Range Filters (>140 dB)
   Photodiode and IR Detector Amplifiers
   Accelerometers

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