PGA281 Datasheet, PDF (1/32 Pages) Texas Instruments – Precision, Zero-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

PGA281
www.ti.com
SBOS664A – MARCH 2013 – REVISED JUNE 2013
Precision, Zero-Drift, High-Voltage,
Programmable Gain Instrumentation Amplifier
Check for Samples: PGA281
FEATURES
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•234 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
+15 V
VSP
PGA281
IN-P
A1
VSOP
VO-P
+5 V
IN-N
Gain
A2
A3
VOCM
VO-N
VSON
ADS1259
ADC
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.
RELATED PRODUCTS
PRODUCT
FEATURES
ADS1259 23-bit resolution, ΔΣ analog-to-digital converter
INA333
Chopper-stabilized instrumentation amplifier,
RR I/O, 5-V single supply
PGA204 High-precision PGA; G = 1, 10, 100, and 1000
PGA280
Zero-Drift, 36-V, PGA, SPI, GPIOs, input switch
matrix
15 V G0 G1 G2 G3 G4 3 V EF
VSN
DVDD
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TINA-TI is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated