INA851RGTR

An external resistor can be used to program the gain in the range of G = 0.2 to 10,000. It features a fully differential output with integrated clamps. The INA851 can operate over a very wide single or dual power supply voltage range. The output stage gain can be set to 0.2 or 1 by shorting or leaving two pins floating. Any input stage gain in the range of 1 to 10,000 can be set using a single external resistor. The INA851 uses super ß input transistors, thus providing extremely low input bias current and low input-referred current noise compared to other amplifiers in the same class. Advanced manufacturing processes achieve extremely low voltage noise, input offset voltage, and offset voltage drift. Additional circuitry protects the device inputs from overvoltage up to ±40V beyond the supply voltage. The device output has a built-in clamp circuit to protect the ADC or downstream devices from over-drive damage. The device can operate with a single supply (minimum 8V, maximum 36V) or dual supplies (minimum ±4V, maximum ±18V).

Applications

• Analog input module
• Flow transmitter
• LCD testing
• Electrocardiogram (ECG)
• Surgical equipment
• Oscilloscope (DSO)
• Weighing scale
• Semiconductor testing

Key features

• Gain programmable via external resistor over G = 0.2 to 10,000
• Fully differential output with integrated clamp
• Low offset voltage: 10 μV (typ), 35 μV (max)
• Low tempco: 0.1 μV/°C (typ), 0.3 μV/°C (max)
• Low input bias current: 5 nA (typ)
• Input stage noise: 3.2 nV/√Hz, 0.8 pA/√Hz
• High bandwidth: 22 MHz at G = 0.2, 15 MHz at G = 1
• CMR: 106 dB (min) at G = 10, 120 dB (min) at 100 ≤ G ≤ 1000
• PSR: 110 dB (min) at G = 1
• Supply current: 6 mA (typ)
• Input overvoltage protection up to ±40V beyond supply voltage
• Supply voltage range: single supply: 8V to 36V; dual supply: ±4V to ±18V
• Rated temperature range: -40°C to +125°C
• Compact package: 16-pin VQFN