TI INA317IDGKR

The INA317 is a low-power precision instrumentation amplifier with excellent accuracy. It is designed with three types of multifunctional operational amplifiers, featuring a small size and low power consumption, making it suitable for various portable applications. A single external resistor can set any gain within the range of 1 to 1000 as defined by the industry-standard gain equation G = 1 + (100 kΩ / RG). This instrumentation amplifier offers low offset voltage (75 μV, G ≥ 1001), excellent offset voltage drift (0.3 μV/°C, G ≥ 100), and high common-mode rejection (100 dB when G ≥ 10). It is powered by a supply voltage as low as 1.8 V (±0.9 V) and a quiescent current of 50 μA, thus being suitable for battery-powered systems. It uses auto-calibration technology to ensure accuracy over a wide industrial temperature range and can provide a low noise density (50 nV/√Hz) that extends to DC. It comes in an 8-pin VSSOP surface-mount package and is rated for a temperature range of TA = -40°C to +125°C.

• Low offset voltage: 75μV (max), G ≥ 100
• Low temperature drift: 0.3μV/°C, G ≥ 100
• Low noise: 50nV/√Hz, G ≥ 100
• High CMRR: 100dB (min), G ≥ 10
• Low input bias current: 200pA (max)
• Supply range: 1.8V to 5.5V
• Input voltage: (V–) 0.1V to (V+) - 0.1V
• Voltage range: (V–) 0.05V to (V+) - 0.05V
• Low quiescent current: 50μA
• Operating temperature range: -40°C to +125°C
• RFI-filtered inputs
• 8-pin VSSOP package

• Bridge amplifier
• ECG amplifier
• Pressure sensor
• Medical instrumentation
• Portable instrumentation
• Weigh scales
• Thermocouple amplifier
• RTD sensor amplifier
• Data acquisition