1 Features

• 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
  • Shutdown Current: 2 µA
• 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
• Packages: 3-mm × 3-mm VSON

2 Applications

• Industrial Process Controls
• Circuit Breakers
• Battery Testers
• ECG Amplifiers
• Power Automation
• Medical Instrumentation
• Portable Instrumentation

3 Description

The INA826S device is a low-cost instrumentation amplifier that offers extremely low power consumption along with shutdown and operates over a very wide single- 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 (max).

The INA826S is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB 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 INA826S is well-suited for low voltage operation from a 3-V single supply as well as dual supplies up to ±18 V.

Shutdown pins are provided to reduce supply current below 2 µA. Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826S is available in a 10-pin, 3-mm ×
3-mm VSON surface-mount package. The INA826S is specified over the –40°C to +125°C temperature range.

1. For all available packages, see the orderable addendum at the end of the data sheet.

INA826S Simplified Internal Schematic

4 Revision History

Changes from * Revision (May 2017) to A Revision

• Changed output stage offset voltage from 700 µV to 1000 µVGo