AD9248BSTZ-20

The AD9248BSTZ-20 is a dual, 14-bit, 20 MSPS analog-to-digital converter (ADC) from Analog Devices. It utilizes a multistage differential pipelined architecture with output error correction logic to achieve 14-bit accuracy and guarantee no missing codes.

Key electrical specifications include a signal-to-noise ratio (SNR) of 71.6 dB and a spurious-free dynamic range (SFDR) of 80.5 dBc. The device operates from a single 3V supply (2.7V to 3.6V) and consumes low power, approximately 300 mW per channel at 65 MSPS. It features a wide bandwidth differential sample-and-hold amplifier (SHA) with a 500 MHz, 3 dB bandwidth, supporting flexible analog input ranges from 1 V p-p to 2 V p-p.

This ADC is suitable for various applications, including ultrasound equipment, direct conversion or IF sampling receivers, and battery-powered instruments. It offers differential or single-ended inputs and supports offset binary or twos complement data formats. The device is available in a 64-LQFP package and is designed for surface mounting.

The AD9248BSTZ-20 includes features like a clock duty cycle stabilizer and an output data multiplexer option. Its architecture ensures excellent crosstalk immunity, exceeding 85 dB, making it suitable for demanding signal processing tasks.