INA851 Series
Low-noise (3.2 nV/√Hz) high-speed (22 MHz) fully-differential instrumentation amp with OVP (±40 V)
Manufacturer: Texas Instruments
Catalog
Low-noise (3.2 nV/√Hz) high-speed (22 MHz) fully-differential instrumentation amp with OVP (±40 V)
Key Features
• Gain programmable from G = 0.2 to 10,000 by using external resistorFully differential outputs with integrated clampingLow offset voltage: 10 µV (typ), 35 µV (max)Low offset drift: 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/√HzWide bandwidth: 22 MHz at G = 0.2, 15 MHz at G = 1Common-mode rejection: 106 dB (min) at G = 10, 120 dB (min) at 100 ≤ G ≤ 1000Power supply rejection: 110 dB (min) at G = 1Supply current: 6 mA (typ)Input overvoltage protection to ±40 V beyond suppliesSupply range:Single supply: 8 V to 36 VDual supply: ±4 V to ±18 VSpecified temperature range: –40°C to +125°CTiny package: 16-pin VQFNGain programmable from G = 0.2 to 10,000 by using external resistorFully differential outputs with integrated clampingLow offset voltage: 10 µV (typ), 35 µV (max)Low offset drift: 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/√HzWide bandwidth: 22 MHz at G = 0.2, 15 MHz at G = 1Common-mode rejection: 106 dB (min) at G = 10, 120 dB (min) at 100 ≤ G ≤ 1000Power supply rejection: 110 dB (min) at G = 1Supply current: 6 mA (typ)Input overvoltage protection to ±40 V beyond suppliesSupply range:Single supply: 8 V to 36 VDual supply: ±4 V to ±18 VSpecified temperature range: –40°C to +125°CTiny package: 16-pin VQFN
Description
AI
The INA851 is the industry’s first high-precision instrumentation amplifier with fully differential outputs. This device is optimized to drive inputs of modern high performance analog-to-digital converters (ADCs) with fully differential inputs. The INA851 operates over a very-wide, single-supply or dual-supply range. The output stage gain can be set to either 0.2 or to 1 by shorting or floating two pins. A single external resistor sets any input stage gain from 1 to 10,000.
Compared to other amplifiers in the same class, the INA851 offers very-low input bias current and low input-referred current noise as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift. Additional circuitry protects the device inputs against overvoltage up to ±40 V beyond the power-supply voltages.The device outputs feature built-in clamping circuitry to protect the ADC or downstream device against overdrive damage.
The device is designed for operation from either an 8-V minimum single or ±4-V dual supply, and a maximum of 36-V single or ±18 V dual supply.
The INA851 is the industry’s first high-precision instrumentation amplifier with fully differential outputs. This device is optimized to drive inputs of modern high performance analog-to-digital converters (ADCs) with fully differential inputs. The INA851 operates over a very-wide, single-supply or dual-supply range. The output stage gain can be set to either 0.2 or to 1 by shorting or floating two pins. A single external resistor sets any input stage gain from 1 to 10,000.
Compared to other amplifiers in the same class, the INA851 offers very-low input bias current and low input-referred current noise as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift. Additional circuitry protects the device inputs against overvoltage up to ±40 V beyond the power-supply voltages.The device outputs feature built-in clamping circuitry to protect the ADC or downstream device against overdrive damage.
The device is designed for operation from either an 8-V minimum single or ±4-V dual supply, and a maximum of 36-V single or ±18 V dual supply.
