TI PGA900: high-resolution resistive sensing conditioner

Mouser Electronics is now stocking the PGA900 programmable resistive sensing conditioner from Texas Instruments (TI). The PGA900 device is described as the industry's highest-resolution resistive sensing signal conditioner, enabling fast and precise 24-bit measurement of parameters such as pressure, strain, flow, or liquid levels.

The TI PGA900 sensing conditioner manipulates its input signals by amplification and digitisation through two analogue front end channels, each containing a low-noise 24-bit analogue-to-digital converter (ADC), to enable high-resolution signal acquisition. The device also includes a 14-bit digital-to-analogue converter (DAC) to provide highly linear analogue outputs, and a variety of output interfaces "" including analogue voltage, 4-20 mA current loop, SPI, I2C, UART, and one-wire interface (OWI) "" to give designers options for different application needs.

The PGA900 signal conditioner offers a programmable ARM Cortex-M0 core, enabling flexible linearisation and temperature compensation for numerous resistive bridge sensing applications. The PGA900 offers integrated power management that accepts external power supply voltages from 3.3V to 30V to simplify design. Low-drift voltage reference of 10 ppm/degC (maximum) enables high accuracy across the -40degC to +150degC operating temperature range.

Mouser is also now stocking the TI PGA900EVM evaluation module, which enables designers to quickly and easily evaluate the features of the PGA900 conditioner in either voltage mode or current mode. The PGA900EVM has an onboard resistive bridge with a potentiometer, letting designers adjust differential input voltages to emulate a pressure sense element. The PGA900EVM also includes a 7.5V regulator for one-time programmable (OTP) memory.

Follow the link to learn more about the PGA900 device and its evaluation module.

Mouser Electronics

Artisan Building, Suite C, First Floor
Hillbottom Road
High Wycombe
HP12 4HJ

+ 44 (0)1494 467490



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