SLDS216 December 2017 PGA302
PRODUCTION DATA.
The PGA302 is a low-drift, low-noise, programmable signal-conditioner device designed for a variety of resistive bridge-sensing applications like pressure-, temperature-, and level-sensing applications. The PGA302 can also support flow metering applications, weight scale and force-sensing applications that use strain gauge load cells, and other general resistive bridge signal-conditioning applications.
The PGA302 provides a bridge excitation voltage of 2.5 V and a current output source with programmable current output up to 1 mA. At the input, the device contains two identical analog front-end (AFE) channels followed by a 16-bit Sigma-Delta ADC. Each AFE channel has a dedicated programmable gain amplifier with gain up to 200 V/V.
In addition, one of the channels integrates a sensor offset compensation function while the other channel integrates an internal temperature sensor.
At the output of the device, a 1.25-V, 14-bit DAC is followed by a ratiometric-voltage supply output buffer with gain of 4 V/V allowing a 0-5V ratiometric voltage system output. The PGA302 device implements a third-order temperature coefficient (TC) and non-linearity (NL) digital compensation algorithm to calibrate the analog output signal. All required parameters for the linearization algorithm as well as other user data is stored in the integrated EEPROM memory.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
PGA302 | TSSOP (16) | 5.00 mm × 4.40 mm |