INA818 Series

Low power (350-µA), precision instrumentation amp with ±60-V overvoltage protection (gain pins 1, 8)

Catalog

Low power (350-µA), precision instrumentation amp with ±60-V overvoltage protection (gain pins 1, 8)

Part	Current - Output / Channel	Amplifier Type	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Supply Span (Max) [Max]	Slew Rate	Voltage - Input Offset	Number of Circuits	Supplier Device Package	Voltage - Supply Span (Min) [Min]	-3db Bandwidth	Current - Input Bias	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type
Texas Instruments INA818IDR	20 mA	Instrumentation	8-SOIC	3.9 mm	0.154 in	36 V	0.9 V/µs	10 µV	1	8-SOIC	4.5 V	2 MHz	150 pA	125 °C	-40 °C	Surface Mount
Texas Instruments INA818ID	20 mA	Instrumentation	8-SOIC	3.9 mm	0.154 in	36 V	0.9 V/µs	10 µV	1	8-SOIC	4.5 V	2 MHz	150 pA	125 °C	-40 °C	Surface Mount

Catalog

Low power (350-µA), precision instrumentation amp with ±60-V overvoltage protection (gain pins 1, 8)

Key Features

• Low offset voltage: 10 µV (typ), 35 µV (max)Gain drift: 5 ppm/°C (G = 1),35 ppm/°C (G > 1) (max)Noise: 8 nV/√HzBandwidth: 2 MHz (G = 1), 270 kHz (G = 100)Stable with 1-nF capacitive loadsInputs protected up to ±60 VCommon-mode rejection: 110 dB, G = 10 (min)Power-supply rejection: 100 dB, G = 1 (min)Supply current: 385 µA (max)Supply voltage range:Single supply: 4.5 V to 36 VDual supply: ±2.25 V to ±18 VSpecified temperature: –40°C to +125°CPackage: 8-pin SOICLow offset voltage: 10 µV (typ), 35 µV (max)Gain drift: 5 ppm/°C (G = 1),35 ppm/°C (G > 1) (max)Noise: 8 nV/√HzBandwidth: 2 MHz (G = 1), 270 kHz (G = 100)Stable with 1-nF capacitive loadsInputs protected up to ±60 VCommon-mode rejection: 110 dB, G = 10 (min)Power-supply rejection: 100 dB, G = 1 (min)Supply current: 385 µA (max)Supply voltage range:Single supply: 4.5 V to 36 VDual supply: ±2.25 V to ±18 VSpecified temperature: –40°C to +125°CPackage: 8-pin SOIC

Description

The INA818 is a high-precision instrumentation amplifier that offers 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 10000. The device offers high precision as a result of super-beta input transistors, which provide exceptionally low input offset voltage, offset voltage drift, input bias current, input voltage, and current noise. Additional circuitry protects the inputs against overvoltage up to ±60 V. The INA818 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is designed for low-voltage operation from a 4.5-V single supply, as well as dual supplies up to ±18 V. The INA818 is available in an 8-pin SOIC package and is specified over the –40°C to +125°C temperature range. The INA818 is a high-precision instrumentation amplifier that offers 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 10000. The device offers high precision as a result of super-beta input transistors, which provide exceptionally low input offset voltage, offset voltage drift, input bias current, input voltage, and current noise. Additional circuitry protects the inputs against overvoltage up to ±60 V. The INA818 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is designed for low-voltage operation from a 4.5-V single supply, as well as dual supplies up to ±18 V. The INA818 is available in an 8-pin SOIC package and is specified over the –40°C to +125°C temperature range.