AD9238BSTZRL-65

Overview

The AD9238BSTZRL-65 is a dual-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 65 MSPS with a single 3 V supply. The device features differential inputs with a 500 MHz bandwidth and an integrated voltage reference. Key electrical parameters include a Signal-to-Noise Ratio (SNR) of 70.4 dB and a Spurious-Free Dynamic Range (SFDR) of 80.5 dBc. Power consumption is 698 mW at full speed. It utilizes a parallel interface and is housed in a 64-lead LQFP package.

Feature Summary

• Dual high-performance sample-and-hold amplifiers enable simultaneous conversion on two channels.
• Integrated duty cycle stabilizer maintains performance across wide clock variations.
• Flexible analog input supports user-selectable ranges from 1 V p-p to 2 V p-p.
• Multiplexed data output option allows single-port operation from either channel.

Applications

• Ultrasound equipment
• Direct conversion or IF sampling receivers
• WB-CDMA, CDMA2000, WiMAX systems

Procurement Notes

Verify the specific suffix -65 indicates the 65 MSPS speed grade. Confirm the RL designation corresponds to reel packaging. Ensure the LQFP-64 package matches the target PCB footprint. Check RoHS compliance status for the specific manufacturing batch.

Selection Notes

Select this component when dual-channel synchronization is required without external timing complexity. The integrated reference simplifies board design compared to discrete solutions. Consider the 65 MSPS speed grade only if higher throughput is necessary, as lower grades offer reduced power consumption.

Part Context

This part belongs to the AD9238 family, which includes variants operating at 20 MSPS and 40 MSPS. The -65 suffix specifically denotes the highest speed grade within this series. It is pin-compatible with the 14-bit AD9248, allowing for potential resolution upgrades in existing designs.

Replacement Considerations

AD9238BSTZRL-40: Lower speed grade (40 MSPS). AD9238BSTZRL-20: Lowest speed grade (20 MSPS). AD9248BSTZRL-65: Pin-compatible 14-bit version.