AD7888ARZ-REEL7

Overview

The AD7888ARZ-REEL7 is a high-speed, low-power 12-bit successive-approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single power supply ranging from 2.7 V to 5.25 V and supports a throughput rate of 125 kSPS. The device integrates an eight-channel multiplexer with single-ended inputs, an on-chip track-and-hold circuit, and a serial interface compatible with SPI, QSPI, Microwire, and DSP standards. It features flexible power management options, including automatic shutdown after conversion, and is housed in a 16-lead TSSOP package.

Feature Summary

• Integrates an eight-channel multiplexer with single-ended sampling scheme for efficient multi-point data acquisition.
• Features flexible power management modes, including normal operation, full shutdown, autoshutdown, and autostandby.
• Includes an on-chip 2.5 V reference voltage source that can be accessed externally or disabled for external references.
• Supports versatile serial communication interfaces compatible with standard protocols like SPI and Microwire.

Applications

• Battery-powered systems such as personal digital assistants and mobile communications devices
• Medical instruments requiring precise signal monitoring
• Instrumentation and control systems

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to the reel packaging format when sourcing components. Confirm that the A-version specifications meet the required temperature range of -40°C to +105°C. Ensure compatibility with the target system's logic levels and clock frequencies before integration.

Selection Notes

Select this component for applications requiring a balance of resolution and speed in a compact form factor. Consider the 12-bit resolution and 125 kSPS rate for moderate-speed data acquisition tasks. Evaluate the power consumption requirements against the available power management modes to optimize battery life in portable designs.

Part Context

The AD7888 series represents Analog Devices' solution for space-constrained, low-power data acquisition needs. The ARZ variant specifically denotes the RoHS-compliant version in a TSSOP package. This part is designed to replace larger, higher-power ADC solutions in modern electronic devices where size and energy efficiency are critical design parameters.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD7889, which offers similar functionality but may differ in specific performance metrics or package availability. Verify electrical characteristics and software compatibility when substituting.