AD7888ARUZ-REEL

Overview

The AD7888ARUZ-REEL is an 8-channel, 12-bit successive-approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V supply and supports throughput rates up to 125 kSPS with a 2 MHz serial clock. The device features eight single-ended analog inputs, an on-chip 2.5 V reference, and flexible power management modes including shutdown and standby. It utilizes a serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The component is housed in a 16-lead TSSOP package and is specified for operation across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates an 8-channel multiplexer with a single-ended sampling scheme and on-chip track-and-hold amplifier.
• Offers flexible power management options including automatic power-down after conversion and full shutdown modes.
• Features a versatile serial I/O port compatible with multiple industry-standard communication protocols.
• Includes an internal 2.5 V voltage reference that can be disabled for external reference input.

Applications

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

Procurement Notes

Verify the specific revision grade (A or B version) required for your application, as specifications like differential nonlinearity may vary between versions. Confirm that the REEL suffix indicates tape and reel packaging suitable for automated assembly processes. Ensure compatibility with your system's voltage levels and serial interface timing requirements before finalizing procurement.

Selection Notes

Select this component when space constraints are critical, as the 16-lead TSSOP package offers a smaller footprint compared to alternative solutions. Consider the power management features if battery life is a priority, allowing for significant power reduction during idle periods. Ensure the source impedance of the analog input signals is low enough to maintain desired total harmonic distortion performance at the target sampling rate.

Part Context

The AD7888ARUZ-REEL belongs to the AD7888 family of micropower, high-speed ADCs. The ARUZ designation specifically identifies the 16-lead thin shrink small outline (TSSOP) package variant with industrial temperature rating. The REEL suffix denotes the shipping configuration, indicating the components are supplied in a continuous tape format for surface-mount technology assembly lines.

Replacement Considerations

The AD7888ARZ serves as a pin-compatible alternative packaged in a 16-lead narrow SOIC format. When substituting, verify that the thermal characteristics and physical dimensions of the SOIC package fit within the existing board layout constraints.