AD876JRS

Overview

The AD876JRS is a CMOS, 10-bit, 20 MSPS analog-to-digital converter (ADC) from Analog Devices. It features a multistage pipelined architecture with output error correction logic and an on-chip sample-and-hold amplifier. The device operates on a single +5 V supply with power dissipation of 160 mW. It guarantees no missing codes over the commercial temperature range (0°C to +70°C). Key electrical parameters include a differential nonlinearity (DNL) of ±0.5 LSB, integral nonlinearity (INL) of ±1.0 LSB, and a signal-to-noise ratio of 56 dB at 1 MHz input frequency. The digital I/Os are compatible with +5 V or +3.3 V logic via the DRVDD pin.

Feature Summary

• Multistage pipelined architecture with output error correction logic ensures accurate performance and guarantees no missing codes across the operating temperature range.
• On-chip sample-and-hold amplifier simplifies driving requirements for high-speed analog signals.
• Force and sense connections to reference inputs minimize external voltage drops for improved accuracy.
• Digital I/O interfaces support both +5 V and +3.3 V logic levels through the adjustable DRVDD supply.

Applications

• Charge coupled device (CCD) input systems such as color scanners and digital copiers
• Electronic still cameras and camcorders requiring low power and high speed
• High-speed data acquisition and communications systems

Procurement Notes

Verify the specific ordering suffix JRS corresponds to the 28-lead SSOP package and commercial temperature range during procurement. Confirm that the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure that the supplier provides valid traceability documentation for this discontinued or legacy part number to maintain quality standards in production environments.

Selection Notes

Select the AD876JRS when a 10-bit resolution and 20 MSPS sampling rate are required in a compact 28-lead SSOP package. Consider this component for designs needing compatibility with both 5V and 3.3V digital logic domains without additional level shifters. Evaluate the 160 mW power consumption against system thermal constraints, noting that standby mode can reduce power below 50 mW if lower throughput is acceptable.

Part Context

The AD876 series includes pin-compatible 8-bit options like the AD876JR-8, allowing design flexibility for prototype migration. The JRS suffix specifically denotes the 28-lead SSOP package variant suitable for space-constrained applications. This model belongs to the broader AD876 family which also offers TQFP packaging options for different board layout requirements.

Replacement Considerations

The AD9200 is a pin-compatible alternative offering similar 10-bit, 20 MSPS performance with lower power dissipation of 80 mW. Designers should verify that the AD9200's supply voltage range and dynamic performance specifications meet the specific application requirements before substitution.