INA129-EP - Enhanced Product Precision, Low Power Instrumentation Amplifiers

The INA129-EP device is a low power, general-purpose instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design and small size make the device ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. The INA129-EP provides an industry-standard gain equation; the INA129-EP gain equation is compatible with the AD620.

The INA129-EP device is laser trimmed for very low offset voltage, drift, and high common-mode rejection (113 dB at G ≥ 100). It operates with power supplies as low as ±2.25 V, and quiescent current is only 750 µA–ideal for battery operated systems. Internal input protection can withstand up to ±40 V without damage.

The INA129-EP is available in a 8-Pin SOIC surface-mount package specified for the –55°C to 125°C temperature range.

• Low Offset Voltage
• Low Input Bias Current
• High CMR: 95 dB (Typical)
• Inputs Protected to ±40 V
• Wide Supply Range: ±2.25 V to ±18 V
• Low Quiescent Current: 2 mA (Typical)
• APPLICATIONS
  • Bridge Amplifier
  • Thermocouple Amplifier
  • RTD Sensor Amplifier
  • Medical Instrumentation
  • Data Acquisition
  • Supports Extreme Temperature Applications:
    • Controlled Baseline
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to +125°C)
      Temperature Range⁽¹⁾
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

⁽¹⁾ Custom temperature ranges available
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