AD9246BCPZ-80

Overview

The AD9246BCPZ-80 is a monolithic, single-supply 14-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 80 MSPS. It utilizes a multistage differential pipeline architecture with output error correction logic to ensure accuracy and guarantee no missing codes across the full industrial temperature range of -40°C to +85°C. The device features a high-performance sample-and-hold amplifier (SHA) with a 650 MHz bandwidth and an on-chip voltage reference. It operates from a single 1.8 V analog supply and supports digital output driver supplies ranging from 1.8 V to 3.3 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 71.7 dBc at 70 MHz input and a Spurious-Free Dynamic Range (SFDR) of 85 dBc at the same frequency.

Feature Summary

• Multistage differential pipeline architecture with output error correction logic for 14-bit accuracy
• High-performance sample-and-hold amplifier (SHA) with wide 650 MHz bandwidth
• Integrated clock duty cycle stabilizer (DCS) to maintain performance over varying clock pulse widths
• Flexible serial port interface (SPI) for configuration of data formatting, power modes, and test patterns

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• Battery-powered instruments
• Hand-held scopemeters
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific speed grade suffix (e.g., -80, -105, or -125) matches the required sampling rate, as electrical specifications vary between variants. Confirm that the LFCSP_VQ package requires soldering the exposed thermal paddle to the ground plane for proper thermal dissipation and mechanical reliability. Ensure the design accommodates the separate AVDD and DRVDD power domains and the mandatory 10 kΩ bias resistor connection.

Selection Notes

Select this component when a 14-bit resolution and up to 80 MSPS throughput are required within a low-power, single-supply environment. The AD9246BCPZ-80 is suitable for designs needing flexible digital interface compatibility via its 1.8 V to 3.3 V output supply. Consider the pin-compatible AD9233 if a migration path from 12-bit resolution is desired, noting that the AD9246 offers higher precision without changing the footprint.

Part Context

The AD9246 belongs to Analog Devices' family of 1.8 V core ADCs, which also includes the AD9233 (12-bit) and higher-speed variants like the AD9246-105 and AD9246-125. These devices share a common architectural foundation and physical footprint, facilitating design scalability. The AD9246 series is distinguished by its patented SHA input and integrated reference, targeting applications where power efficiency and signal integrity are critical constraints.

Replacement Considerations

The AD9233BCPZ-80 is a pin-compatible alternative offering 12-bit resolution. For higher speed requirements, the AD9246BCPZ-105 (105 MSPS) and AD9246BCPZ-125 (125 MSPS) are direct functional upgrades within the same package.