AD7888BR-REEL

Overview

The AD7888BR-REEL is a high-speed, low-power 12-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V power supply and supports throughput rates up to 125 kSPS. The device features eight single-ended analog inputs with an input range of 0 V to VREF. It incorporates an on-chip 2.5 V reference or accepts external references between 1.2 V and VDD. The ADC utilizes a successive-approximation architecture and communicates via a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. It is available in 16-lead narrow SOIC and TSSOP packages.

Feature Summary

• Eight single-ended analog input channels multiplexed into an internal track-and-hold circuit
• Flexible power management options including automatic shutdown after conversion
• Integrated 2.5 V reference source with capability for external reference overdrive
• Serial interface compatible with multiple standard protocols

Applications

• Battery-powered systems such as personal digital assistants and mobile communications devices
• Medical instruments requiring low power consumption
• Instrumentation and control systems

Procurement Notes

Verify the specific grade version (A or B) associated with the BR suffix against official documentation, as performance specifications like differential nonlinearity may vary between grades. Confirm that the REEL designation corresponds to the intended tape and reel packaging format required for automated assembly processes.

Selection Notes

Select this component when designing systems requiring an 8-channel multiplexed input solution in a compact footprint. Ensure the application budget accommodates the 2.7 V to 5.25 V supply range. Consider the 125 kSPS throughput limit and the specific serial clock requirements when interfacing with the host microcontroller.

Part Context

This part belongs to the AD7888 family of micropower, 12-bit ADCs. It is distinguished by its integration of eight analog channels and a small 16-lead package form factor. The series is designed for applications where space constraints and battery life are critical design parameters.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio that offer similar channel counts and resolution. Verify that any substitute maintains compatibility with the existing serial communication protocol and voltage supply requirements.