INA826 Instrumentation Amplifier IC Chip

INA826（ Precision, 200-μA Supply Current, 3-V to 36-V Supply,Instrumentation Amplifier With Rail-to-Rail Output)

Introduction

The INA826 is a cost-effective instrumentation amplifier that offers extremely low power consumption and operates over a very wide single -supply or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (maximum).

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84dB across the full input common-mode range, from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826 is a great choice for low-voltage operation from a 3V single supply, as well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against overvoltage of up to ±40V beyond the power supplies by limiting the input currents to less than 8mA.

The INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm x 3-mm WSON surface-mount packages.All versions are specified for the -40°C to +125°C temperature range.

Feature

• Input common-mode range: Includes V-Common-mode rejection:
  – 104 dB, min(G=10)
  – 100 dB, min at 5 kHz (G= 10)
• Power-supply rejection: 100 dB, min (G= 1)
• Low offset voltage: 150 μV, max
• Gain drift: 1 ppm/°C (G= 1), 35 ppm/°C (G> 1)
• Noise: 18 nV/√Hz, G≥100
• Bandwidth: 1 MHz(G= 1), 60 kHz (G = 100)
• Inputs protected up to ±40 V
• Rail-to-rail output
• Supply current: 200 μA
• Supply range:
  一Single supply:3 V to 36 V
  一Dual supply: ±1.5V to ±18 V
• Specified temperature range:-40°C to +125°C
• Packages: 8-pin VSSOP, SOIC, and WSON

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