AD9235BCPZRL7-20

Overview

The AD9235BCPZRL7-20 is a monolithic, single-supply, 12-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 20 MSPS. It utilizes a multistage differential pipelined architecture with output error correction logic to ensure no missing codes across the industrial temperature range (-40°C to +85°C). The device features an on-chip high-performance sample-and-hold amplifier (SHA) and voltage reference, supporting flexible analog input ranges from 1 V p-p to 2 V p-p. It operates on a single 3 V supply (2.7 V to 3.6 V) with a separate digital driver supply for 2.5 V or 3.3 V logic compatibility.

Feature Summary

• Integrated high-performance sample-and-hold amplifier (SHA) and internal voltage reference
• Multistage differential pipelined architecture with output error correction logic
• Flexible analog input configuration supporting both differential and single-ended modes
• Clock duty cycle stabilizer (DCS) maintains performance over wide clock pulse width variations

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• Battery-powered instruments
• Hand-held scopemeters
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific ordering suffix RL7 against the manufacturer's official documentation to confirm reel packaging specifications and tape dimensions. Ensure the component matches the exact speed grade and package type required for the design. Cross-reference the datasheet revision to confirm all electrical parameters align with current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution and 20 MSPS throughput are required within a low-power, single-supply environment. Consider the LFCSP package for compact board space requirements compared to the TSSOP option. Evaluate the need for the internal reference versus external precision references based on system noise sensitivity and calibration capabilities.

Part Context

This part belongs to the AD9235 family, which includes variants operating at 40 MSPS and 65 MSPS. All members share the same pinout and architectural foundation, allowing for simplified upgrades from 10-bit systems like the AD9214. The -20 designation specifically indicates the 20 MSPS speed bin within this broader product line.

Replacement Considerations

Direct replacements include other AD9235 speed grades such as AD9235BRUZ-40 or AD9235BRUZ-65 if higher throughput is needed. For legacy 10-bit systems, the AD9214 serves as a compatible predecessor. Verify that any substitute maintains the same LFCSP-32 footprint and voltage levels.