0
ACTIVE
PGA/VGA |
PGA |
Number of channels |
2 |
Vs (min) (V) |
10 |
Vs (max) (V) |
36 |
Input type |
Differential |
Output type |
Differential |
Input offset drift (±) (typ) (µV/°C) |
0.03 |
Interface type |
GPIO, SPI |
Noise at 1 kHz (typ) (V√Hz) |
0.00000002 |
BW at Acl (MHz) |
6 |
Acl, min spec gain (V/V) |
0.125 |
Gain (max) (dB) |
42 |
Architecture |
CMOS |
Features |
SPI, Zero Drift |
Vos (offset voltage at 25°C) (typ) (mV) |
0.003 |
Input voltage noise (typ) (µV√Hz) |
0.022 |
Slew rate (typ) (V/µs) |
1 |
Iq per channel (typ) (mA) |
3.15 |
Gain error (typ) (%) |
0.03 |
Gain drift (max) (ppm/°C) |
0.5 |
Rating |
Catalog |
Operating temperature range (°C) |
-40 to 125 |
TSSOP (PW)-24-49.92 mm² 7.8 x 6.4
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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