ADS1212U – TEXAS OR BURR-BROWN

The Texas Instruments ADS1212U is a low-power, 12-bit, single-channel, delta-sigma analog-to-digital converter (ADC) housed in a 16-pin TSSOP package. It operates from a 2.7V to 5.5V supply voltage and features a ±2.5V analog input range, though this can be adjusted via external circuitry. The device boasts a throughput rate of 200kSPS and achieves a typical input-referred noise of only 2.5µVrms, making it suitable for high-resolution, low-noise applications. Its internal oscillator eliminates the need for an external clock, simplifying design. The ADS1212U employs a serial peripheral interface (SPI) for data communication, offering flexible integration with microcontrollers._x000D_
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Key advantages include its low power consumption (typically 300µA at 3.3V), making it ideal for battery-powered systems. Its high resolution and low noise are particularly beneficial in biomedical signal processing, precision instrumentation, and industrial process monitoring where accurate measurement of small signals is critical. The device’s single-channel configuration simplifies circuit design while maintaining excellent performance. However, designers should be mindful of the limited input range and consider external amplification if larger voltage signals are anticipated. The ADS1212U’s inherent delta-sigma architecture provides excellent linearity and rejection of harmonic distortion.