AD977BRZ

Analog To Digital Converters (ADC) Overview

The AD977BRZ is a 16-bit, 100 kSPS successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates on a single 5 V supply and features a serial interface compatible with SPI/QSPI/MICROWIRE standards. The device is housed in a 20-pin SOIC package and supports single-ended input signals. Key performance metrics include an 85 dB signal-to-noise ratio, ±3 LSB integral nonlinearity, and ±2 LSB differential nonlinearity. It dissipates 100 mW of power and functions within a temperature range of -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 allowing direct connection to microprocessors and DSPs without external logic.
• Includes internal reference options or supports external references for customizable voltage ranges.
• Designed for low power consumption suitable for battery-operated and portable instrumentation applications.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring precise analog signal digitization.
• Portable data acquisition instruments and handheld measurement devices.
• Medical instrumentation such as patient monitors and diagnostic equipment.
• Automotive sensor interfaces for environmental and engine parameter monitoring.

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Check for RoHS compliance status and moisture sensitivity level handling requirements during storage and assembly. Confirm package integrity upon receipt to ensure pin alignment and solderability meet specification standards before PCB integration.

Analog To Digital Converters (ADC) Selection Notes

Select the AD977BRZ when a 16-bit resolution and 100 kSPS sampling rate are required for single-channel applications. Ensure the design accommodates a 5 V single-supply architecture and utilizes a serial communication protocol. Consider thermal management for the 100 mW power dissipation in enclosed enclosures. Verify that the input signal range matches the reference voltage configuration selected for the application.

Analog To Digital Converters (ADC) Part Context

The AD977BRZ belongs to the AD977 family of BiCMOS A/D converters from Analog Devices. This series provides a balance of high resolution and moderate speed for general-purpose data conversion tasks. The BRZ suffix indicates a lead-free, RoHS-compliant variant packaged in a standard SOIC-20 footprint, distinguishing it from older non-compliant or alternative package versions within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes include the AD977CRZ (SOIC package) and AD977BNZ (PDIP package). For surface-mount replacements with identical functionality, the AD977CRZ is the primary equivalent. Other families may require interface and pinout adjustments.