AD976CRS

Analog To Digital Converters (ADC) Overview

The AD976CRS is a 16-bit, 100 kSPS analog-to-digital converter (ADC) manufactured by Analog Devices. It utilizes a switched-capacitor successive approximation register (SAR) architecture and operates from a single +5 V supply with a maximum power dissipation of 100 mW. The device features a standard industrial ±10 V input range, an internal 2.5 V reference, and a high-speed parallel interface. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 83 dB, Integral Nonlinearity (INL) of ±3 LSB, and Differential Nonlinearity (DNL) of ±2 LSB. It is housed in a 28-lead Shrink Small Outline Package (SSOP).

Analog To Digital Converters (ADC) Feature Summary

• Factory calibrated for minimized linearity errors using proprietary BiCMOS process technology.
• Integrated on-chip clock and reference buffer eliminates external timing components.
• High-speed parallel data bus supports direct interfacing with microcontrollers and DSPs.
• Flexible byte-select pin allows output data to be read as full 16-bit words or two 8-bit bytes.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring precise voltage monitoring.
• Data acquisition modules for scientific instrumentation.
• Medical equipment involving signal digitization.
• Test and measurement devices utilizing standard ±10 V input ranges.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific grade (C-Grade) and throughput rate (100 kSPS) against project requirements. Confirm package availability as the SSOP variant may have limited stock compared to DIP or SOIC options. Ensure ESD handling protocols are strictly followed during assembly due to the sensitivity of the CMOS inputs. Cross-reference the ordering guide to confirm the exact suffix matches the desired thermal and mechanical specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the AD976CRS when a 100 kSPS sampling rate is sufficient for the application bandwidth. Choose this part over the AD976A series if lower power consumption and reduced throughput meet system needs. Verify that the ±10 V input range aligns with the sensor output levels. Consider the SSOP package constraints regarding thermal dissipation and board space compared to larger DIP packages.

Analog To Digital Converters (ADC) Part Context

The AD976CRS belongs to the AD976/AD976A family of 16-bit ADCs. It shares the same core architecture and pinout as the faster AD976A variants but is specified for a 100 kSPS throughput rate. The 'C' designation indicates the C-Grade performance level, while 'RS' denotes the 28-lead Shrink Small Outline Package. This model represents a cost-effective solution for applications prioritizing resolution and accuracy over maximum speed.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same package include AD976BR and AD976ANZ. For higher speed requirements, the AD976A series offers 200 kSPS throughput with identical pinouts. Alternative packages such as SOIC (AD976CR) or PDIP (AD976CN) provide mechanical compatibility without electrical changes.