AD9235BRUZ-65

Overview

The AD9235BRUZ-65 is a monolithic, single-channel, 12-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 65 MSPS. It utilizes a multistage differential pipelined architecture with output error correction logic to ensure no missing codes across the full industrial temperature range (-40°C to +85°C). The device operates from a single 3 V supply (2.7 V to 3.6 V) and features an on-chip high-performance sample-and-hold amplifier (SHA) and voltage reference. It accepts differential or single-ended analog inputs with a flexible input span ranging from 1 V p-p to 2 V p-p. Digital outputs are available in offset binary or two's complement formats via a parallel interface.

Feature Summary

• Integrated high-performance sample-and-hold amplifier (SHA) and internal voltage reference for simplified system design.
• Multistage differential pipelined architecture with output error correction logic ensuring 12-bit accuracy without missing codes.
• Flexible analog input configuration supporting both differential and single-ended modes with selectable input spans.
• Built-in clock duty cycle stabilizer (DCS) to maintain performance despite wide variations in clock pulse widths.

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• Battery-powered instruments
• Hand-held scopemeters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current data sheet to confirm package type and temperature grade. Ensure that the DRVDD supply voltage matches the target digital logic family requirements, as it is separate from the analog supply. Confirm RoHS compliance status and lead-free specifications prior to final procurement decisions.

Selection Notes

Select this component when a 12-bit resolution and 65 MSPS throughput are required within a compact TSSOP-28 footprint. Consider the separate DRVDD pin if interfacing with 2.5 V or 3.3 V logic families. Evaluate the internal reference options against external precision requirements to optimize power consumption and board space.

Part Context

This part belongs to the AD9235 family, which includes variants operating at 20 MSPS and 40 MSPS. All members share the same architectural foundation and pinout compatibility, allowing for scalable design upgrades. The BRUZ suffix specifically denotes the 28-lead TSSOP package variant suitable for surface-mount applications.

Replacement Considerations

The AD9235 pinout is similar to the AD9214-65, facilitating a simplified upgrade path from 10-bit to 12-bit systems. Designers should verify pin compatibility and software configuration differences when migrating from previous generation ADCs.