Texas Instruments (TI) today introduced the industry's highest resolution resistive sensing signal conditioner, enabling fast and precise 24-bit measurement of conditions such as pressure, strain, flow or liquid levels.
The PGA900 signal conditioner offers a programmable core, enabling flexible linearization and temperature compensation for numerous resistive bridge sensing applications. For more information about this new resistive sensing conditioner, see www.ti.com/PGA900-pr.
The PGA900 integrates two low-noise 24-bit analog-to-digital converters (ADCs) to enable high-resolution signal acquisition, a 14-bit digital-to-analog converter (DAC) to provide highly linear analog outputs, and a variety of output interfaces, including analog voltage, 4-20 mA current loop, SPI, I2C, UART, and one-wire interface (OWI), to give designers options for different application needs. The PGA900's integrated power management accepts external power supply voltages from 3.3 V to 30 V.
Key features and benefits of the PGA900 resistive sensing conditioner
- Fast, precise sensor signal and temperature compensation: Integrates two 24-bit ADCs to provide high-resolution signal acquisition. Low-drift voltage reference of 10 ppm/oC, maximum, enables high accuracy across the -40oC to 150oC operating temperature range.
- Integrated 14-bit DAC: Enables highly linear analog outputs.
- User-programmable temperature and nonlinearity compensation algorithms: Integrated ARM® Cortex®-M0 core allows developers to use proprietary temperature and nonlinearity compensation algorithms to differentiate their end products.
- Simple calibration: One-wire interface allows communication, configuration and calibration through the power supply pin without using additional lines.
- Wide input voltage allows direct connection to the power supply: Integrated power management circuitry accepts input voltages ranging from 3.3 V to 30 V to simplify the design and provide reliability.