Texas Instruments INA826
The INA826 is a cost-effective instrumentation amplifier that offers extremely low power consumption and operates over a very wide single-supply or dualsupply range. 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.FEATURES
●1 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 2
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) 3
DESCRIPTION
A single external resistor sets any gain from 1 to 1000. At G = 1, the commonmode 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.