AD9246BCPZRL7-105

Overview

The AD9246BCPZRL7-105 is a monolithic, single-supply, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc. It operates at a maximum sampling rate of 105 MSPS with a 1.8 V analog supply and a separate 1.8 V to 3.3 V digital output driver supply. The device features a high-performance sample-and-hold amplifier (SHA) with a 650 MHz bandwidth and an on-chip voltage reference. Utilizing a multistage differential pipeline architecture with output error correction logic, it guarantees no missing codes over the full operating temperature range (-40°C to +85°C). Key performance metrics include an SNR of 71.7 dBc at 70 MHz input and an SFDR of 85 dBc. Power consumption is 350 mW at DC input and 395 mW with a sine wave input.

Feature Summary

• Multistage differential pipeline architecture with output error correction logic for 14-bit accuracy
• Integrated high-performance sample-and-hold amplifier (SHA) supporting flexible analog inputs
• On-chip voltage reference and clock duty cycle stabilizer (DCS)
• Serial port control interface for data formatting and configuration

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 '-105' corresponds to the 105 MSPS conversion rate when sourcing. Confirm the 'RL7' suffix indicates reel packaging if required by assembly processes. Ensure the ordering part number matches the exact pinout and thermal pad requirements for the 48-lead LFCSP_VQ package to maintain signal integrity and thermal performance.

Selection Notes

Select this component for applications requiring 14-bit resolution at speeds up to 105 MSPS with low power consumption. It is suitable for designs needing a single 1.8 V analog supply and flexible digital logic compatibility via the DRVDD pin. Consider the pin-compatible AD9233 if a migration from 12-bit resolution is necessary without changing the PCB layout.

Part Context

The AD9246 series includes variants with different maximum sampling rates: 80 MSPS, 105 MSPS, and 125 MSPS. The AD9246BCPZRL7-105 specifically denotes the 105 MSPS speed grade within the 14-bit family. These devices share the same 48-lead LFCSP_VQ package and functional block diagram, differing primarily in their guaranteed maximum conversion rates and associated AC performance specifications.

Replacement Considerations

The AD9233 is pin-compatible with the AD9246, allowing for migration from 12-bit to 14-bit resolution. Other ADI ADCs in the 105 MSPS or 125 MSPS range may require schematic modifications due to differences in pinouts or supply requirements.