AD977CRS

Analog To Digital Converters (ADC) Overview

The AD977CRS is a monolithic 16-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes successive approximation register (SAR) architecture and operates on a single 5 V supply. The device features a serial interface for data output and supports sampling rates of up to 200 kSPS. It is housed in a 20-pin SOIC package with surface-mount installation. Key electrical specifications include a signal-to-noise ratio of 85 dB, differential nonlinearity of ±2 LSB, integral nonlinearity of ±3 LSB, and power dissipation of 100 mW. The operational temperature range extends from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a high-speed 16-bit SAR ADC core with a track-and-hold amplifier for accurate signal acquisition.
• Features a flexible serial interface compatible with standard microprocessor communication protocols.
• Includes internal reference voltage options to simplify external circuit design and reduce component count.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring precise analog signal digitization.
• Portable instrumentation and battery-powered measurement devices due to low power consumption.
• Data acquisition modules in automated testing equipment.

Analog To Digital Converters (ADC) Procurement Notes

Verify the exact suffix designation against official Analog Devices documentation, as availability varies by region. Confirm RoHS compliance status and humidity sensitivity handling requirements before procurement. Check for obsolescence notices or limited supply constraints directly from the manufacturer or authorized distributors to ensure long-term project viability.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and moderate sampling speed are required for single-ended input applications. Ensure the system design accommodates the 20-pin SOIC footprint and 5 V logic levels. Compare performance metrics such as SNR and linearity against alternative SAR ADCs if higher throughput or differential inputs are needed.

Analog To Digital Converters (ADC) Part Context

The AD977CRS belongs to the AD977 family of 16-bit BiCMOS A/D converters. This series is designed for applications balancing precision with power efficiency. The 'C' suffix typically denotes commercial temperature range operation, while 'RZ' indicates lead-free packaging. Variants like AD977ANZ offer through-hole packaging options within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes may include other 16-bit SAR ADCs from Analog Devices or Texas Instruments. Verify pin compatibility and interface timing requirements before substitution. Consider the ADS7809UB or similar TI parts as potential alternatives, though electrical characteristics and packaging differences must be evaluated.