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Amplificadores de ganancia programable y variable (PGA y VGA)

PGA280

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Amplificador de ganancia programable de alto voltaje y deriva cero

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PGA280

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Detalles del producto

PGA/VGA PGA Number of channels 4 Vs (max) (V) 36 Vs (min) (V) 10 BW at Acl (MHz) 6 Acl, min spec gain (V/V) 0.125 Slew rate (typ) (V/µs) 1 Gain (max) (dB) 42 Gain error (typ) (%) 0.03 Rating Catalog Operating temperature range (°C) -40 to 125
PGA/VGA PGA Number of channels 4 Vs (max) (V) 36 Vs (min) (V) 10 BW at Acl (MHz) 6 Acl, min spec gain (V/V) 0.125 Slew rate (typ) (V/µs) 1 Gain (max) (dB) 42 Gain error (typ) (%) 0.03 Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • Wide input range: ±15.5 V at ±18-V supply
  • Binary gain steps: 128V/V to 1/8 V/V
  • Additional scaling factor: 1 V/V and 1⅜ V/V
  • Low offset voltage: 3 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
  • Input configuration switch matrix
  • Wire break test current
  • Expandable SPI™ with checksum
  • General-purpose I/O port
  • TSSOP-24 package
  • Wide input range: ±15.5 V at ±18-V supply
  • Binary gain steps: 128V/V to 1/8 V/V
  • Additional scaling factor: 1 V/V and 1⅜ V/V
  • Low offset voltage: 3 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
  • Input configuration switch matrix
  • Wire break test current
  • Expandable SPI™ with checksum
  • General-purpose I/O port
  • TSSOP-24 package

The PGA280 is a high-precision instrumentation amplifier with digitally-controllable gain and signal integrity test capability. This device offers low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise with superior common-mode and supply rejection to support high-resolution precision measurement. The 36-V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.

Special circuitry prevents inrush currents from multiplexer (MUX) switching. In addition, the input switch matrix enables easy reconfiguration and system-level diagnostics—overload conditions are indicated.

The configurable general-purpose input/output (GPIO) offers several control and communication features. The SPI can be expanded to communicate with more devices, supporting isolation with only four ISO couplers. The PGA280 is available in a TSSOP-24 package and is specified from –40°C to +105°C. For all available packages, see the package option addendum at the end of the data sheet.

The PGA280 is a high-precision instrumentation amplifier with digitally-controllable gain and signal integrity test capability. This device offers low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise with superior common-mode and supply rejection to support high-resolution precision measurement. The 36-V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.

Special circuitry prevents inrush currents from multiplexer (MUX) switching. In addition, the input switch matrix enables easy reconfiguration and system-level diagnostics—overload conditions are indicated.

The configurable general-purpose input/output (GPIO) offers several control and communication features. The SPI can be expanded to communicate with more devices, supporting isolation with only four ISO couplers. The PGA280 is available in a TSSOP-24 package and is specified from –40°C to +105°C. For all available packages, see the package option addendum at the end of the data sheet.
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Documentación técnica

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* Data sheet PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 08 abr 2020
Analog Design Journal Precision signal conditioning for safety-enabled AIMs in factory automation 30 sep 2019
EVM User's guide ADS1259EVM and ADS1259EVM-PDK User's Guide (Rev. B) 14 may 2016
Application note PGA280 Communication via SPI™ 06 dic 2009

Diseño y desarrollo

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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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