AD9231BCPZRL7-80

Overview

The AD9231BCPZRL7-80 is a dual-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 80 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 patented sample-and-hold circuit and an on-chip voltage reference, supporting input frequencies up to 200 MHz. It operates from a single 1.8 V analog supply and accommodates digital driver supplies from 1.8 V to 3.3 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 71.3 dBFS at a 9.7 MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 93 dBc under the same conditions. The component is housed in a 64-lead LFCSP package.

Feature Summary

• Multistage differential pipeline architecture with output error correction logic for high accuracy
• Patented sample-and-hold circuit maintaining performance for input frequencies up to 200 MHz
• On-chip voltage reference and low power consumption design
• Serial port interface (SPI) for programmable clock alignment, data formatting, and test pattern generation

Applications

• Communications systems including GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, and TD-SCDMA
• Diversity radio systems and multimode digital receivers
• I/Q demodulation systems and smart antenna systems
• Portable medical imaging and ultrasound equipment
• Battery-powered instruments and hand-held scope meters

Procurement Notes

Verify the specific ordering suffix RL7 against the manufacturer's current documentation to confirm reel packaging specifications. Ensure compatibility with the required SPI configuration settings for data format and clock divider modes. Confirm that the 64-lead LFCSP thermal requirements are met by the PCB layout, particularly regarding the exposed paddle connection to AGND for proper heat dissipation and noise reduction.

Selection Notes

Select this model when a dual-channel, 12-bit resolution is required at sampling rates up to 80 MSPS. Consider the AD9231 series for applications needing low power consumption and a wide analog input bandwidth of 700 MHz. Verify that the system can support the necessary 1.8 V analog supply and 1.8 V to 3.3 V digital supply voltages. Evaluate the need for the integrated voltage reference versus external options based on system noise requirements.

Part Context

The AD9231BCPZRL7-80 belongs to the AD9231 family of dual-channel ADCs, which also includes variants rated for 20 MSPS, 40 MSPS, and 65 MSPS. These devices share pinout compatibility with other Analog Devices converters such as the AD9268, AD9258, AD9251, and AD9204, facilitating migration paths between different resolutions and speeds within the same package footprint.

Replacement Considerations

Direct replacements within the AD9231 family include AD9231BCPZ-20, AD9231BCPZ-40, and AD9231BCPZ-65, depending on the required sampling speed. For higher resolution needs, consider the AD9251 or AD9258. For lower resolution but potentially higher speed options, evaluate the AD9204.