ADS7888SDBVT

The ADS7888SDBVT is an 8-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Texas Instruments. It offers a sampling rate of 1.25 MSPS and operates from a wide supply voltage range of 2.35V to 5.25V. The device features a capacitor-based SAR architecture with inherent sample and hold, providing zero latency conversion.

Key electrical characteristics include typical integral non-linearity (INL) of ±0.15 LSB and differential non-linearity (DNL) of ±0.1 LSB. The signal-to-noise and distortion ratio (SINAD) is 49.5 dB, and total harmonic distortion (THD) is -67.5 dB. Power dissipation is typically 3.8 mW at 3V supply and 8 mW at 5V supply, with a power-down current of 1 µA. The input bandwidth is 15 MHz at 3 dB.

The device uses a SPI serial interface controlled by CS and SCLK signals, enabling glueless connections with microprocessors and DSPs. It is available in a 6-pin SOT-23 package (SOT-23-6) for surface mount assembly. The operating temperature range is -40°C to 125°C.

Typical applications include base band converters in radio communication, motor current and bus voltage sensors in digital drives, optical networking (DWDM, MEMS based switching), battery powered systems, medical instrumentation, and high-speed data acquisition systems.