AD976CR

Analog To Digital Converters (ADC) Overview

The AD976CR is a 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 5 V supply and provides a throughput rate of 100 kSPS. The device features a standard industrial bipolar input range of ±10 V and includes an internal 2.5 V reference voltage source. It utilizes a high-speed parallel interface with on-chip clocking capabilities. The component is housed in a 28-lead Small Outline Integrated Circuit (SOIC) package and is rated for operation within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a switched capacitor ADC architecture with factory calibration to minimize linearity errors.
• Supports flexible reference configuration using either the internal 2.5 V source or an external reference.
• Provides a complete A/D solution with an onboard sample-and-hold circuit and clock generator.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution data acquisition.
• Portable and desktop chemical analysis instrumentation.
• Data acquisition modules interfacing directly with microcontrollers or digital signal processors.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific grade and revision level against the manufacturer's ordering guide, as performance metrics such as spurious-free dynamic range vary between grades. Confirm that the 28-lead SOIC package matches the target PCB footprint. Ensure that the single 5 V supply requirement aligns with the system power architecture before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and 100 kSPS sampling rate are required for single-supply applications. Consider the AD976A variant if a higher throughput of 200 kSPS is necessary. Evaluate the internal reference stability against application requirements; an external precision reference may be needed for optimal AC performance. Verify that the parallel interface timing meets the host processor's setup and hold time constraints.

Analog To Digital Converters (ADC) Part Context

The AD976CR belongs to the AD976 family of BiCMOS analog-to-digital converters. This series combines high-performance bipolar devices with CMOS transistors to achieve low power consumption and high speed. The family includes variants with different throughput rates and packaging options, all sharing the same core 16-bit SAR architecture and ±10 V input capability.

Analog To Digital Converters (ADC) Replacement Considerations

The AD976BR serves as a direct functional replacement within the same package, offering improved AC accuracy specifications while maintaining identical pinouts and electrical interfaces.