AD9235BCPZ-40

Overview

The AD9235BCPZ-40 is a monolithic, single-channel, 12-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 40 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 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.

Feature Summary

• Multistage differential pipelined architecture with integrated output error correction logic for guaranteed linearity.
• On-chip high-performance sample-and-hold amplifier (SHA) and voltage reference supporting flexible analog input ranges.
• Integrated clock duty cycle stabilizer (DCS) to maintain performance under wide clock pulse width variations.
• Out-of-range (OTR) indicator signal to detect overflow conditions relative to the selected input range.

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• IS-95, CDMA-One, IMT-2000 systems
• Battery-powered instruments
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific suffix 'BCPZ' corresponds to the 32-lead LFCSP package variant when sourcing. Confirm that the '-40' designation matches the required 40 MSPS data rate specification. Ensure environmental compliance requirements align with the 'Z' lead-free designation. Cross-reference the manufacturer's current ordering guide to validate active status and availability before finalizing procurement plans.

Selection Notes

Select this component for applications requiring 12-bit resolution at 40 MSPS with low power consumption. Consider the 32-lead LFCSP package for compact board space requirements. Evaluate the need for the internal voltage reference versus external precision references based on system noise budgets. Verify compatibility with the target logic family by checking DRVDD requirements for the digital output drivers.

Part Context

The AD9235BCPZ-40 belongs to the AD9235 family of 12-bit ADCs, which also includes variants operating at 20 MSPS and 65 MSPS. This specific model represents the mid-speed option within the series, fabricated using advanced CMOS technology. It shares architectural similarities with the AD9214, allowing for potential pin-compatible upgrades from 10-bit to 12-bit systems.

Replacement Considerations

The AD9235BRUZ-40 serves as a functional equivalent utilizing a 28-lead TSSOP package instead of the LFCSP form factor. Designers must account for differences in thermal impedance and physical footprint when substituting between these package types. Other speed grades within the AD9235 family may require adjustments to clocking and timing constraints.