AD4681BCPZ-RL7

Analog To Digital Converters (ADC) Overview

The AD4681BCPZ-RL7 is a dual-channel, 16-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates with a throughput rate of 500 kSPS and features fully differential analog inputs. The device supports a supply voltage range of 3.0 V to 3.6 V for analog circuits and 1.65 V to 3.6 V for logic interfaces. Key performance metrics include a typical signal-to-noise ratio (SNR) of 92.5 dB with an external 3.3 V reference, and a maximum integral nonlinearity (INL) error of 1.5 LSBs. It integrates a buffered 2.5 V internal reference and utilizes a high-speed serial interface for data transfer.

Analog To Digital Converters (ADC) Feature Summary

• Dual simultaneous sampling architecture with 500 kSPS throughput per channel
• 16-bit resolution with on-chip oversampling and resolution boost capabilities
• Fully differential analog inputs with wide common-mode voltage range
• Integrated 2.5 V internal reference or support for external references up to 3.3 V

Analog To Digital Converters (ADC) Applications

• Motor control position feedback
• Motor control current sense
• Sonar systems
• Power quality monitoring
• Data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix RL7 against the manufacturer's official documentation to confirm packaging details such as reel size and quantity. Ensure compatibility with the required operating temperature range of −40°C to +125°C for the intended application environment.

Analog To Digital Converters (ADC) Selection Notes

Select the AD4681 variant over the AD4680 when a lower throughput rate of 500 kSPS is sufficient, as it offers reduced power consumption compared to the 1 MSPS AD4680 model. Consider the availability of the internal 2.5 V reference versus the need for higher precision external references up to 3.3 V based on system noise requirements.

Analog To Digital Converters (ADC) Part Context

The AD4681 belongs to the AD4680/AD4681 family of 16-bit SAR ADCs. These devices are pin-compatible and share identical functional block diagrams and software interfaces. The primary distinction between the models lies in their maximum conversion rates, allowing designers to optimize power consumption without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

The AD4680 is a direct pin-compatible alternative within the same family, offering a higher throughput rate of 1 MSPS. Designers should evaluate whether the increased speed justifies the higher power dissipation associated with the AD4680 model.