AD9241ASZ

Overview

The AD9241ASZ is a monolithic 14-bit, 1.25 MSPS analog-to-digital converter in a 44-pin MQFP package. It operates on a single +5 V supply with typical power consumption of 60 mW. The device features an on-chip sample-and-hold amplifier and voltage reference, supporting differential or single-ended inputs. Key performance metrics include a Signal-to-Noise and Distortion Ratio (SINAD) of 78.0 dB at 100 kHz input frequency, a Spurious-Free Dynamic Range (SFDR) of 88.0 dB, and an Effective Number of Bits (ENOB) of 12.7 bits. Integral Nonlinearity is ±2.5 LSB, and Differential Nonlinearity is ±0.6 LSB.

Feature Summary

• Monolithic integration of a 14-bit pipeline ADC with on-chip sample-and-hold amplifier and programmable voltage reference.
• Flexible analog input structure supporting both differential and single-ended configurations with varying input spans.
• Digital output drivers configurable for direct interfacing with +3 V and +5 V CMOS logic families.
• Includes an out-of-range indicator signal to detect overflow conditions during conversion.

Applications

• Imaging systems requiring high-resolution data acquisition
• Medical instrumentation and diagnostic equipment
• Communications systems employing Direct-IF down conversion
• General-purpose data-acquisition systems

Procurement Notes

Verify the specific suffix ASZ against the manufacturer's current ordering guide to confirm temperature range and RoHS compliance status. Confirm pinout compatibility with existing PCB footprints before procurement. Check for end-of-life notifications as this component was released in 1997. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS process.

Selection Notes

Select the AD9241ASZ when a low-power, single-supply 14-bit resolution is required at speeds up to 1.25 MSPS. Consider this part if the application benefits from an integrated voltage reference and sample-and-hold amplifier to reduce external component count. Evaluate the 44-pin MQFP package constraints against available board space. Verify that the +5 V supply requirement aligns with the system power architecture.

Part Context

The AD9241 belongs to Analog Devices' family of monolithic sampling ADCs designed for cost-effective, high-performance applications. It utilizes a multistage differential pipelined architecture with digital error correction to guarantee no missing codes. This series targets designs needing hybrid-level performance in a compact CMOS implementation, balancing speed and resolution for industrial and communication uses.

Replacement Considerations

Check the manufacturer's official replacement list for updated components. No public substitute part numbers are confirmed in the provided documentation.