AD7763BSVZ

Overview

The AD7763BSVZ is a 24-bit, single-channel Sigma-Delta analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a maximum fully filtered output word rate of 625 kSPS and operates with a serial interface. The device provides a dynamic range of 109 dB at the maximum data rate and 120 dB at lower rates, with an SNR of 107 dB at 625 kSPS. It utilizes a fully differential modulator input and includes on-chip differential amplifiers for signal buffering. Power requirements include AVDD1/DVDD/VDRIVE at 2.5 V and AVDD2/AVDD3/AVDD4 ranging from 3.15 V to 5.25 V. The component is housed in a 64-lead TQFP_EP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a low-pass finite impulse response (FIR) filter with default or user-programmable coefficients.
• Includes digital offset and gain correction registers for calibration.
• Supports synchronization of multiple devices via a dedicated SYNC pin.
• Features programmable oversampling rates ranging from 32x to 256x.

Applications

• Data acquisition systems
• Vibration analysis
• Instrumentation

Procurement Notes

Verify the specific ordering suffix 'SVZ' against the manufacturer's current datasheet to confirm package type and RoHS compliance status. Ensure that the required supply voltages match the system design, as the device requires distinct analog and digital power rails. Confirm availability through authorized distributors, as stock levels may vary.

Selection Notes

Select this component when high-speed, high-resolution data conversion is required with minimal external filtering. The integrated buffer and FIR filter reduce front-end complexity. Consider the power consumption differences between normal and low-power modes if energy efficiency is critical. Verify that the serial interface timing meets the host controller's capabilities.

Part Context

The AD7763BSVZ belongs to the AD7763 series of high-performance ADCs. Related devices in the family include the AD7760 and AD7762, which offer similar resolution but differ in interface types and sampling speeds. This series is designed for applications demanding wide dynamic range and high speed without complex external signal processing.

Replacement Considerations

The AD7762 is a parallel interface alternative within the same series. The AD7760 offers higher speed but uses a parallel interface. Verify pin compatibility and software register configurations when substituting these parts.

FAQ

What is the maximum output data rate of the AD7763?

The maximum fully filtered output word rate is 625 kSPS.

Does the AD7763 support I2S interface mode?

Yes, the device supports I2S interface mode via the I2S pin configuration.

How is the common-mode biasing achieved for the differential input?

Common-mode biasing can be achieved using the on-chip differential amplifiers, reducing external signal conditioning requirements.