AD7888BRZ

The AD7888BRZ is a high-speed, low-power 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a single 2.7V to 5.25V power supply and achieves a throughput rate of 125 kSPS. The device features eight single-ended analog inputs (AIN1 through AIN8) with an input range of 0 to VREF.

An on-chip 2.5V reference can be used as the reference source, or an external reference from 1.2V to VDD can be applied via the REF IN/REF OUT pin. The converter uses a charge redistribution DAC architecture and includes a track-and-hold circuit that acquires a signal in 500 ns. The digital interface is SPI/DSP-compatible, using SCLK, DOUT, DIN, and CS pins.

Designed for battery-powered systems, instrumentation, control systems, and high-speed modems, the AD7888BRZ is specified for operation over the industrial temperature range of -40°C to +105°C. It is offered in a 16-lead narrow SOIC (0.154", 3.90mm width) surface-mount package, making it suitable for compact designs.

Key features include flexible power management with a shutdown mode drawing 1 µA maximum, low power consumption (3.5 mW typical), and a 1:1 S/H:ADC ratio. The device is RoHS compliant and has an MSL rating of 1 (unlimited).