AD7888ARUZ-REEL7

Overview

The AD7888ARUZ-REEL7 is a micropower, 12-bit successive-approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features eight single-ended analog inputs and operates from a single 2.7 V to 5.25 V supply. The device supports throughput rates up to 125 kSPS with a full power bandwidth of 2.5 MHz. It integrates an on-chip 2.5 V reference or accepts external references between 1.2 V and VDD. The ADC utilizes a flexible serial interface compatible with SPI, QSPI, Microwire, and DSP standards. Housed in a 16-lead TSSOP package, it offers low power dissipation of typically 3.5 mW in normal operation and includes multiple power management modes.

Feature Summary

• Integrates an 8-channel multiplexer with a track-and-hold amplifier for efficient multi-point signal acquisition.
• Provides flexible power management options including automatic shutdown after conversion to minimize energy consumption.
• Features a versatile serial input/output port compatible with standard digital communication protocols.
• Includes an internal 2.5 V voltage reference that can be disabled for external reference applications.

Applications

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

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the A-version temperature range of -40°C to +105°C meets the operational environmental requirements of the target application. Ensure compatibility with the 16-lead TSSOP footprint during PCB layout verification.

Selection Notes

Select this component when an 8-channel multiplexed input is required within a compact 16-lead package. Consider the AD7888 for designs prioritizing low static and dynamic power consumption alongside 12-bit resolution. Evaluate the serial interface timing constraints against the host microcontroller's capabilities to ensure reliable data transfer at the desired sampling rate.

Part Context

The AD7888ARUZ-REEL7 belongs to the AD7888 series of micropower ADCs. The ARUZ designation indicates the use of the 16-lead Thin Shrink Small Outline (TSSOP) package, which provides a smaller form factor compared to the SOIC variant. This package style is designed for space-constrained surface-mount applications while maintaining thermal performance suitable for industrial temperature ranges.

Replacement Considerations

The AD7888ARZ serves as a pin-compatible alternative housed in a 16-lead narrow SOIC package. Verify that the package dimensions and thermal characteristics of the replacement suit the existing board layout. Performance specifications regarding speed and accuracy remain consistent across these package variations within the same product family.