AD9246BCPZ-125

Overview

The AD9246BCPZ-125 is a monolithic, single-supply 14-bit analog-to-digital converter (ADC) from Analog Devices Inc. It operates at a maximum sampling rate of 125 MSPS and requires a 1.8 V analog supply with a separate 1.8 V to 3.3 V digital output driver supply. The device features a differential input with a 650 MHz bandwidth, an on-chip voltage reference, and a high-performance sample-and-hold amplifier. At 125 MSPS, it consumes 395 mW of power. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 71.7 dBc and a Spurious-Free Dynamic Range (SFDR) of 85 dBc at a 70 MHz input frequency. It utilizes a multistage differential pipeline architecture with output error correction logic.

Feature Summary

• Multistage differential pipeline architecture with output error correction logic for 14-bit accuracy
• Integrated high-performance sample-and-hold amplifier and on-chip voltage reference
• Flexible analog input range supporting 1 V p-p to 2 V p-p differential signals
• Supports offset binary, Gray code, or twos complement data formats via serial port control

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• IS-95, CDMA-One, IMT-2000 systems
• Battery-powered instruments
• Hand-held scopemeters

Procurement Notes

Verify the specific speed grade suffix (e.g., -125 for 125 MSPS) matches the required conversion rate. Confirm the package type is 48-lead LFCSP_VQ and that the operating temperature range meets the application requirements of -40°C to +85°C. Ensure the ordering part number corresponds exactly to the Analog Devices datasheet specifications.

Selection Notes

Select this component when a 14-bit resolution and up to 125 MSPS sampling rate are required in a compact form factor. It is suitable for designs needing low power consumption and flexible digital interface options. Consider the pin compatibility with the AD9233 if migrating from a 12-bit architecture. Evaluate the need for the integrated reference against external reference requirements.

Part Context

The AD9246 series includes variants with different maximum sampling rates: 80 MSPS, 105 MSPS, and 125 MSPS. The AD9246BCPZ-125 specifically denotes the 125 MSPS speed grade within the 48-lead LFCSP_VQ package family. All variants share the same architectural features and pinout, differing primarily in their guaranteed maximum clock frequencies.

Replacement Considerations

The AD9246 is pin-compatible with the AD9233, allowing migration from 12-bit to 14-bit designs. No other direct cross-model replacements are documented in the provided source material.