AD7888ARU-REEL

Overview

The AD7888ARU-REEL is a micropower, 12-bit successive-approximation analog-to-digital converter (ADC) 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 (AIN1–AIN8), an on-chip 2.5 V reference, and flexible power management modes including shutdown and standby. Packaged in a 16-lead TSSOP, it offers low power dissipation of typically 2 mW during operation and 3 µW in power-down mode.

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
• On-chip 2.5 V reference with capability for external reference input
• Serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards

Applications

• Battery-powered systems such as personal digital assistants and medical instruments
• Instrumentation and control systems requiring multi-channel monitoring
• High-speed modem applications

Procurement Notes

Verify the specific suffix REEL7 against the manufacturer's current datasheet to confirm packaging quantity and tape-and-reel specifications. Ensure the ordering part number matches the required temperature grade and package variant. Cross-reference the component marking with official documentation to prevent counterfeit substitution.

Selection Notes

Select this component when designing systems that require multiple single-ended analog inputs within a compact footprint. The 12-bit resolution and 125 kSPS speed are suitable for slow-varying signals. Consider the available power management modes if battery life is a critical design constraint.

Part Context

This part belongs to the AD7888 family of micropower ADCs. It shares architectural similarities with the AD7887 but provides eight channels instead of two. The ARU designation indicates the TSSOP package variant, distinguishing it from the SOIC package versions available in the same series.

Replacement Considerations

The AD7888ARZ serves as a tube-packaged alternative within the same product line. Verify pin compatibility and electrical specifications before substituting different package types or channel counts from the broader AD788x family.