High Voltage, Precision, Zero-drift, Instrumentation Amplifier
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Precision current measurement
Features
Description
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Excellent DC specifications
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Small voltage offset: ±50uV (MAX)
The TPA1286 is a low cost, wide supply range instrumentation
amplifier that requires only one external resistor to set any gain
between 1 and 1,000. The TPA1286 is designed to work with
a variety of single voltages. A wide input range and rail-to-rail
output allow the signal to make full use of the supply rails. Low
voltage offset, low offset drift, low gain drift, high gain
accuracy, and high CMRR make this part an excellent choice
in applications that demand the best DC performance.
The TPA1286 operates from single 4V to 36V supply, offers
breakthrough performance throughout the −40°C to +125°C
temperature range. It features a zero-drift core, which leads to
a typical offset drift of 0.2μV/°C throughout the operating
temperature range.
Small voltage offset drift: 0.2μV/°C (MAX)
Small input bias current: 1.5nA (MAX)
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Excellent AC specifications
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CMRR: 80dB @ G=1 (MIN)
Small input noise: 15nV/√Hz @ G=10
Input noise (0.1 Hz to 10 Hz): 1 μV p-p
-3dB Bandwidth: 1.6MHz
Slew rate: 5V/us
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Gain set with 1 external resistor (gain range 1 to 1,000)
SUPPLY VOLTAGE: ±2V to ±18V
RAIL to RAIL for VOLTAGE OUTPUT
Operating Temperature: –45°C to +125°C
SOP8, MSOP8 & DFN3X3-8 PACKAGE
TPA1286 is available in SOP8, MSOP8 and DFN3X3-8 package.
Applications
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Weigh scales for bridge amplifiers
Medical and ECG Amplifiers
Industrial Process Control
Precision data acquisition system
Pressure sensors
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