AD9231BCPZ-40

Overview

The AD9231BCPZ-40 is a dual-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 40 MSPS. It utilizes a multistage differential pipeline architecture with output error correction logic to ensure no missing codes across the full operating temperature range. The device features a high-performance sample-and-hold circuit and an on-chip voltage reference. It operates from a single 1.8 V analog supply and supports digital output driver supplies ranging from 1.7 V to 3.6 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 70.7 dBFS at a 9.7 MHz input frequency and 71.5 dBFS at lower frequencies, with a Spurious-Free Dynamic Range (SFDR) of 95 dBc at 9.7 MHz. Differential Nonlinearity (DNL) is specified at ±0.30 LSB, and Integral Nonlinearity (INL) is ±0.45 LSB.

Feature Summary

• Dual-channel architecture with integrated sample-and-hold circuit and on-chip voltage reference for simplified system design.
• Multistage differential pipeline structure providing 12-bit accuracy without missing codes over the industrial temperature range.
• Flexible serial port interface (SPI) supporting programmable data formatting, clock division, power-down modes, and built-in self-test patterns.

Applications

• Communications systems including GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, and TD-SCDMA receivers.
• Diversity radio systems and multimode digital receivers requiring low power consumption.
• I/Q demodulation systems and smart antenna applications.
• Portable medical imaging devices and battery-powered instruments such as handheld scope meters.

Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Ensure the selected variant matches the required 40 MSPS sampling speed specification. Cross-reference the datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing procurement documentation.

Selection Notes

Select this component when a dual-channel, 12-bit resolution ADC is required with a sampling rate up to 40 MSPS. Consider the AD9231 family variants if higher speeds like 65 MSPS or 80 MSPS are needed, noting that pinouts remain compatible across the series. Evaluate power consumption requirements, as the device offers energy-saving power-down modes suitable for battery-operated applications.

Part Context

The AD9231BCPZ-40 belongs to the AD9231 family of dual-channel, 1.8 V, 12-bit ADCs manufactured by Analog Devices Inc. This family includes variants with different maximum sampling rates, specifically 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS. All variants share the same 64-lead LFCSP package and pinout, facilitating easy migration between different speed grades within the same product line.

Replacement Considerations

The AD9231BCPZ-40 is pin-compatible with other members of the AD9231 family, such as the AD9231BCPZ-20, AD9231BCPZ-65, and AD9231BCPZ-80. Designers can migrate between these parts without changing the PCB layout, provided the system timing accommodates the different sampling rates. Other Analog Devices ADCs in the AD92xx series may also be considered if architectural differences are acceptable.