INA827 - Precision, G>5, 200uA, 2.7-V to 36-V Supply Instrumentation Amplifier

The INA827 is a low-cost instrumentation amplifier (INA) that offers extremely low powerconsumption and operates over a very wide single- or dual-supply range. The device is optimized forthe lowest possible gain drift of only 1 ppm per degree Celsius in G = 5, which requires noexternal resistor. However, a single external resistor sets any gain from 5 to 1000.

The INA827 is optimized to provide excellent common-mode rejection ratio (CMRR) of over88 dB (G = 5) over frequencies up to 5 kHz. In G = 5, CMRR exceeds 88 dB across the full inputcommon-mode range from the negative supply all the way up to 1 V of the positive supply. Using arail-to-rail output, the INA827 is well-suited for low-voltage operation from a 3-V singlesupply aswell as dual supplies up to ±18 V. Additional circuitry protects the inputs against overvoltage ofup to ±40 V beyond the power supplies by limiting the input currents to a save level.

The INA827 is available in a small VSSOP-8 package and is specified for the –40°C to+125°C temperature range. For a similar instrumentation amplifier with a gain range of 1 V/V to1000 V/V, see the INA826.

• Eliminates Errors from External Resistors at Gain of 5
• Common-Mode Range Goes Below
  Negative Supply
• Input Protection: Up to ±40 V
• Rail-to-Rail Output
• Outstanding Precision:
  • Common-Mode Rejection: 88 dB, minimum
  • Low Offset Voltage: 150 µV, maximum
  • Low Drift: 2.5 µV/°C, maximum
  • Low Gain Drift: 1 ppm/°C, max (G = 5 V/V)
  • Power-Supply Rejection:
    100 dB, min (G = 5)
  • Noise: 17 nV/√Hz, G = 1000 V/V
• High Bandwidth:
  • G = 5: 600 kHz
  • G = 100: 150 kHz
• Supply Current: 200 µA, typical
• Supply Range:
  • Single Supply: 3 V to 36 V
  • Dual Supply: ±1.5 V to ±18 V
• Specified Temperature Range:
  –40°C to +125°C
• Package: 8-pin VSSOP

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