AD7886JP-REEL

Overview

The AD7886JP-REEL is a 12-bit, triple-pass flash Analog-to-Digital Converter (ADC) fabricated in LC2MOS technology. It operates from ±5 V power supplies and supports three pin-strappable analog input ranges: 0 V to 5 V, 0 V to 10 V, or ±5 V. The device features an on-chip clock oscillator and track-and-hold amplifier, achieving a throughput rate of 750 kHz with a conversion time of 1 μs. It utilizes standard microprocessor control signals (CS, RD, CONVST) for interface management. The component is specified for the commercial temperature range of 0 °C to +70 °C.

Feature Summary

• Triple-pass flash architecture utilizing 15 comparators and a 4-bit flash technique to achieve 12-bit accuracy without external clocks.
• High-speed digital interface with three-state data outputs and fast bus access times suitable for direct connection to DSP processors.
• Integrated track-and-hold amplifier that acquires input signals to 12-bit accuracy within 333 ns.
• Pin-strappable configuration allowing selection among unipolar and bipolar analog input voltage ranges.

Applications

• Digital Signal Processing
• Speech Recognition and Synthesis
• Spectrum Analysis
• DSP Servo Control

Procurement Notes

Verify the specific suffix JP corresponds to the Plastic Leaded Chip Carrier package and the commercial temperature grade when sourcing. Confirm the REEL designation indicates tape and reel packaging rather than bulk units. Ensure the ordering part number matches the required SNR and linearity specifications for the intended application environment.

Selection Notes

Select this component for applications requiring high-speed sampling with low power consumption relative to parallel ADCs. Consider the requirement for dual ±5 V power supplies and the specific -3.5 V reference voltage setup. Evaluate the need for external offset and gain adjustment circuits if absolute DC accuracy is critical for the system performance.

Part Context

The AD7886 series includes variants such as the JD, KD, BD, and TD models, which differ primarily in operating temperature ranges and package types. The JP variant specifically denotes the plastic leaded chip carrier package for commercial use. This model belongs to Analog Devices' high-speed data converter lineup designed for mixed-signal processing tasks.

Replacement Considerations

Direct replacements include other AD7886 variants like the AD7886KD or AD7886BD depending on temperature requirements. Cross-brand alternatives should be evaluated based on throughput rate, resolution, and supply voltage compatibility.