AD9248BCPZRL-40

Overview

The AD9248BCPZRL-40 is a dual-channel, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates at a maximum sampling rate of 40 MSPS and requires a single 3 V supply (2.7 V to 3.6 V). The device features dual high-performance sample-and-hold amplifiers with a differential input bandwidth of 500 MHz and an integrated voltage reference. It utilizes a multistage differential pipelined architecture with output error correction logic to guarantee no missing codes across the full operating temperature range of -40°C to +85°C. The component is housed in a 64-lead LFCSP package.

Feature Summary

• Dual 14-bit ADCs with integrated voltage reference
• Differential input with 500 MHz 3 dB bandwidth
• Clock duty cycle stabilizer for wide variations
• Multiplexed data output option

Applications

• Ultrasound equipment
• Direct conversion or IF sampling receivers
• WB-CDMA, CDMA2000, WiMAX systems
• Battery-powered instruments
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific ordering suffix RL indicates reel packaging when sourcing from distributors. Confirm that the BCPZ designation corresponds to the Lead-free LFCSP package variant. Ensure the -40 speed grade matches the required 40 MSPS sampling rate for the target application design.

Selection Notes

Select this model for applications requiring dual-channel 14-bit resolution at 40 MSPS. Consider the AD9248-65 if higher throughput is needed, or the AD9248-20 for lower power consumption. Verify compatibility with the system's clocking infrastructure due to the differential clock inputs and duty cycle stabilizer requirements.

Part Context

This component belongs to the AD9248 family of dual ADCs, which also includes the AD9238 (12-bit) and variants with different speed grades (-20, -40, -65). It is pin-compatible with the AD9238, allowing for flexible design upgrades between 12-bit and 14-bit resolutions without changing the PCB layout.

Replacement Considerations

AD9248BSTZ-40

FAQ

What is the pipeline delay latency of the AD9248?

The pipeline delay (latency) is 7 cycles.

How does the out-of-range indicator function?

Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

What are the available data formats?

The digital output data can be presented in either straight binary (offset binary) or twos complement format.