AD977AR-REEL

Analog To Digital Converters (ADC) Overview

The AD977AR-REEL is a 16-bit, 100 kSPS analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes a Successive Approximation Register (SAR) architecture and features a serial input/output interface. The device operates on a single 5 V power supply with a maximum power dissipation of 100 mW. Key electrical specifications include a signal-to-noise ratio (SNR) of 85 dB, differential nonlinearity (DNL) of -1 LSB/1.75 LSB, integral nonlinearity (INL) of +/- 2 LSB, and gain error of +/- 0.25% FSR. It accepts single-ended inputs and supports both internal and external reference types. The component is housed in a 20-pin SOIC package and functions within an operating temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• High-resolution 16-bit conversion capability with factory calibration for low linear error.
• Integrated 2.5V reference voltage source with support for external references.
• SPI-compatible high-speed serial interface for digital communication.
• Low power consumption design suitable for battery-operated systems.

Analog To Digital Converters (ADC) Applications

• Industrial control multi-channel data acquisition systems
• Precision measurement instruments such as oscilloscopes and spectrum analyzers
• Communication system PLL filter and signal conditioning circuits

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official documentation. Check current lifecycle status as older variants may be discontinued. Ensure the serial interface compatibility matches the target microcontroller or DSP controller requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring 16-bit resolution at moderate sampling rates up to 100 kSPS. Consider the SAR architecture for its balance of speed and accuracy. Verify that the single-ended input configuration meets the sensor output requirements. Compare against the AD977A variant if a higher 200 kSPS sampling rate is necessary for the application.

Analog To Digital Converters (ADC) Part Context

The AD977 belongs to the AD977 series of BiCMOS A/D converters from Analog Devices. This family includes variants like the AD977ANZ (PDIP) and AD977BRZ (industrial grade). The AD977AR-REEL specifically denotes the surface-mount SOIC package version supplied in reel format for automated assembly processes.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7809UTI offers equivalent 16-bit resolution and 100 kSPS performance with lower power consumption but requires verification of input impedance differences. AD8509IDWT provides a higher 250 kSPS sampling rate in a compatible SOIC-20 package but necessitates digital interface adjustments.