PGA280 Texas instruments

PGA280

Уточнить цену

PGA280

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

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.

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

PGA/VGA	PGA
Number of channels	4
BW at Acl (MHz)	6
Vs (max) (V)	36
Vs (min) (V)	10
Acl, min spec gain (V/V)	0.125
Gain (max) (dB)	42
Slew rate (typ) (V/µs)	1
Operating temperature range (°C)	-40 to 125
Rating	Catalog