AD7886JD

Overview

The AD7886JD is a 12-bit sampling analog-to-digital converter manufactured by Analog Devices Inc. It operates from ±5 V power supplies and features pin-strappable inputs for three analog ranges: 0 V to 5 V, 0 V to 10 V, or ±5 V. The device utilizes a triple-pass flash architecture with an on-chip clock oscillator, achieving a throughput rate of 750 kHz/1 MHz. It provides fast bus access times of less than 57 ns and standard microprocessor control signals (CS, RD, CONVST). The J version supports an operating temperature range of 0 °C to +70 °C.

Feature Summary

• Triple-pass flash ADC architecture using 15 comparators for high-speed conversion
• Pin-strappable analog input selection for unipolar and bipolar voltage ranges
• On-chip clock oscillator eliminates the need for external timing components
• Three-state digital outputs compatible with standard microprocessor interfaces

Applications

• Digital Signal Processing systems
• Speech Recognition and Synthesis equipment
• Spectrum Analysis instruments
• DSP Servo Control applications

Procurement Notes

Verify the specific suffix JD corresponds to the commercial temperature grade (0 °C to +70 °C) and D-28 ceramic DIP package. Confirm that the required analog input range configuration matches the pin-strapping requirements defined in the datasheet. Ensure supply voltages are strictly maintained within ±5% of nominal ±5 V to guarantee specified dynamic performance and linearity parameters.

Selection Notes

Select this component when a 12-bit resolution with high throughput is required alongside low power consumption. The AD7886JD is suitable for applications needing direct interfacing with DSPs due to its fast bus access time. Consider the available analog input ranges and verify that the ±5 V dual supply requirement aligns with the system design constraints before finalizing the part choice.

Part Context

The AD7886 series belongs to Analog Devices' family of high-speed sampling ADCs fabricated using LC2MOS technology. This process combines precision bipolar circuits with low-power CMOS logic. The JD variant specifically denotes the commercial temperature range and ceramic DIP packaging, distinguishing it from industrial or extended temperature options available in the broader product line.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material.