INA826AIDRGR

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 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 INA826 is a great choice for low-voltage operation from a 3-V single supply, as well as dual supplies up to ±18 V. 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 INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm × 3-mm WSON surface-mount packages. All versions are specified for the -40°C to +125°C temperature range.

Applications

• Analog input module
• Flow transmitter
• Battery test
• LCD test
• Electrocardiogram (ECG)
• Surgical equipment
• Process analytics (pH, gas, concentration, force and humidity)
• Circuit breaker (ACB, MCCB, VCB)

Key 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
• 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: 8-pin VSSOP, SOIC, and WSON