AD624 High Precision, Low Noise Instrumentation Amplifier

The AD624 is a high precision, low noise, instrumentation amplifier designed primarily for use with low level transducers, including load cells, strain gauges and pressure transducers. An combination of low noise, high gain accuracy, low gain temperature coefficient and high linearity make the AD624 ideal for use in high resolution data acquisition systems.

The AD624C has an input offset voltage drift of less than 0.25 µV/°C, output offset voltage drift of less than 10 µV/°C, CMRR above 80 dB at unity gain (130 dB at G = 500) and a maximum nonlinearity of 0.001% at G = 1. In addition to these outstanding dc specifications, the AD624 exhibits superior ac performance as well. A 25 MHz gain bandwidth product, 5 V/µs slew rate and 15 µs settling time permit the use of the AD624 in high speed data acquisition applications.

The AD624 does not need any external components for trimmed gains of 1, 100, 200, 500 and 1000. Additional gains such as 250 and 333 can be programmed within one percent accuracy with external jumpers. A single external resistor can also be used to set the 624's gain to any value in the range of 1 to 10,000.

Features and Benefits
  • Low Noise: 0.2 µV p-p 0.1 Hz to 10 Hz
  • Low Gain TC: 5 ppm max (G = 1)
  • Low Nonlinearity: 0.001% max (G = 1 to 200)
  • High CMRR: 130 dB min (G = 500 to 1000)
  • Pin Programmable Gains of
    1, 100, 200, 500, 1000
  • Low Input Offset Voltage: 25 µV, max
  • Low Input Offset Voltage Drift: 0.25 µV/°C max
  • Gain Bandwidth Product: 25 MHz
  • No External Components Required
  • Internally Compensated
    • Amplifiers
    AD624 SPICE Macro-Model
    Data Sheets
    Documentnote
    AD624: Precision Instrumentation Amplifier Data Sheet (Rev. C)PDF 387 kB
    AD624: Military Data Sheet (Rev. A)PDF 108 kB
    Application Notes
    Documentnote
    AN-244: A User's Guide to I.C. Instrumentation AmplifiersPDF 522 kB
    AN-245: Instrumentation Amplifiers Solve Unusual Design ProblemsPDF 543 kB
    AN-671: Reducing RFI Rectification Errors in In-Amp CircuitsPDF 208 kB
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)PDF 115 kB
    Technical Books
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD624ACHIPS ProductionCHIPS OR DIEREEL 8825C016.56Y
    AD624ADZ Production16 ld Side-Brazed CerDipOTH 23-25 to 85C26.924.31Y
    AD624BDZ Production16 ld Side-Brazed CerDipOTH 23-25 to 85C35.2431.86Y
    AD624CDZ Production16 ld Side-Brazed CerDipOTH 23-25 to 85C50.545.65Y
    AD624SCHIPS ProductionCHIPS OR DIEREEL 8825C041.94Y
    AD624SD Production16 ld Side-Brazed CerDipOTH 23-55 to 125C50.0445.24N
    AD624SD/883B Production16 ld Side-Brazed CerDipOTH 23-55 to 125C64.9258.66N
    Reference Materials
    AD624: Precision Instrumentation Amplifier Data Sheet (Rev. C) ad624
    AD624: Military Data Sheet (Rev. A) ad624
    AD624 SPICE Macro-Model Rev. A, 9/91 ad624
    AD624A SPICE Macro-Model Rev. A, 9/91 ad624
    AD624B SPICE Macro-Model Rev. A, 9/91 ad624
    AD624C SPICE Macro-Model Rev. A, 9/91 ad624
    AD624S SPICE Macro-Model Rev. A, 9/91 ad624
    AN-671: 降低仪表放大器电路中的射频干扰整流误差 (Rev. 0) amp03
    AN-244: IC 仪表放大器用户指南 amp03
    AN-589: 差动放大器性能优化方法 (Rev. 0) ad8350
    AN-244: A User's Guide to I.C. Instrumentation Amplifiers amp03
    AN-245: Instrumentation Amplifiers Solve Unusual Design Problems amp03
    AN-671: Reducing RFI Rectification Errors in In-Amp Circuits amp03
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B) ad8350
    Auto-Zero Amplifiers ad693
    The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers amp03
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