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PGA281 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
PGA281 Precision, Zero-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier TI
Texas Instruments TI
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DESCRIPTION
The PGA281 is a high-precision instrumentation amplifier with a digitally-controllable gain and signal- integrity test capability. This device uses proprietary autozeroing techniques to offer low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise.
The PGA281 is optimized to provide an excellent common-mode rejection of greater than 110 dB (G = 1) over a wide frequency range. Superior common-mode and supply rejection supports high-resolution, precise measurement. The 36-V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.
The PGA281 offers multiple internal gain options from ⅛ V/V (attenuation) to 176 V/V, making this a universal, high-performance, analog front-end suitable for a wide variety of applications. The fully differential, rail-to-rail output is designed to easily interface a wide range of input signals to the low-voltage domain of high-resolution analog-to-digital converters (ADCs).
The PGA281 is available in a TSSOP-16 package and is specified over a temperature range of –40°C to +105°C.

FEATURES
• Wide Input Range: ±15.5 V at ±18 V Supply
• Binary Gain Steps: 128 V/V to ⅛ V/V
• Additional Scaling Factor: 1 V/V and 1⅜ V/V
• Low Offset Voltage: 5 μV at G = 128
• Near-Zero Long-Term Drift of Offset Voltage
• Near-Zero Gain Drift: 0.5 ppm/°C
• Excellent Linearity: 1.5 ppm
• Excellent CMRR: 140 dB
• High Input Impedance
• Very Low 1/f Noise
• Differential Signal Output
• Overload Detection
• TSSOP-16 Package

APPLICATIONS
• High-Precision Signal Instrumentation
• Multiplexed Data Acquisition
• Medical Instrumentation
• Test and Measurement Equipment
• Differential or Single-Ended ADC Drivers
• Strain Gauge Amplifiers
• Industrial Process Control

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