AD876ARS

Overview

The AD876ARS is a CMOS, 10-bit, 20 MSPS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features an on-chip sample-and-hold amplifier and a multistage pipelined architecture with output error correction logic to guarantee no missing codes across the operating temperature range. The device operates on a single +5 V supply with power dissipation of 160 mW, reducible to below 50 mW in standby mode. Digital I/Os are compatible with +5 V or +3.3 V logic via the DRVDD pin. It is housed in a 28-lead SSOP package and specified for commercial temperatures from 0°C to +70°C.

Feature Summary

• Multistage pipelined architecture with output error correction logic ensures accurate performance and guarantees no missing codes over the full operating temperature range.
• On-chip input sample-and-hold amplifier simplifies interface design for high-speed applications.
• Adjustable reference input with force and sense connections minimizes external voltage drops to maintain accuracy.
• Digital I/O interfaces to either +5 V or +3.3 V logic, providing flexibility for system integration.

Applications

• Video and multimedia systems requiring high-speed data acquisition.
• Imaging systems such as color scanners, digital copiers, electronic still cameras, and camcorders.
• Charge coupled device (CCD) input systems.
• High-speed portable applications due to low power consumption and single-supply operation.

Procurement Notes

Verify the specific ordering suffix ARS confirms the 28-lead SSOP package and -40°C to +85°C industrial temperature range, distinct from the J-series commercial variants. Confirm RoHS compliance status and lead-free specifications with the manufacturer or authorized distributor prior to procurement. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS device.

Selection Notes

Select the AD876ARS when an industrial temperature range (-40°C to +85°C) is required, as opposed to the commercial J-series (0°C to +70°C). Consider this component for designs needing pin-compatible migration from 8-bit options. Evaluate the need for force-sense reference connections if high DC accuracy is critical. Verify that the 10-bit resolution and 20 MSPS speed align with the system's dynamic performance requirements.

Part Context

The AD876 series includes variants like the AD876JR (SOIC, commercial) and AD876JST (TQFP, commercial). The AD876ARS specifically denotes the industrial temperature grade (-40°C to +85°C) and the 28-lead SSOP package. It shares the same core functionality and pinout with other AD876 models, allowing for design flexibility based on thermal and spatial constraints.

Replacement Considerations

The AD9200 is a pin-compatible alternative offering lower power dissipation (80 mW at 3 V) and operation between 2.7 V and 5.5 V. Both devices provide 10-bit resolution at 20 MSPS. Verify that the AD9200's differential nonlinearity and power-down modes meet the specific application requirements before substitution.