AD9201ARSZRL

Overview

The AD9201ARSZRL is a dual-channel, 20 MSPS, 10-bit CMOS analog-to-digital converter manufactured by Analog Devices Inc. It integrates two simultaneous sampling ADCs, on-chip analog input buffers, and an internal voltage reference within a 28-lead SSOP package. The device operates from single supplies ranging from 2.7 V to 5.5 V, consuming 215 mW at 3 V. Key electrical specifications include a differential nonlinearity error of 0.4 LSB, a signal-to-noise ratio of 57.8 dB over nine effective bits, and a spurious-free dynamic range of –73 dB. It supports both single-ended and differential inputs with multiplexed digital outputs.

Feature Summary

• Dual matching ADC architecture optimized for applications requiring close channel correlation, such as I/Q demodulation in communications systems.
• Integrated on-chip compensated bandgap voltage reference configurable for 1 V or 2 V output spans via pin selection.
• High-impedance analog input buffers eliminate the need for external operational amplifiers in most driving configurations.
• Multiplexed digital output bus interleaves data from both channels onto a single 10-bit interface to reduce pin count.

Applications

• I/Q channel encoding in wireless communication transceivers
• Spread-spectrum signal processing systems
• Narrowband receiver front-end digitization

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm reel packaging and tape width specifications. Ensure the component meets RoHS compliance requirements for the target assembly process. Cross-reference the date code and lot traceability with the supplier's certificate of conformity prior to procurement.

Selection Notes

Select this component when simultaneous sampling of two correlated signals is required with minimal gain and offset mismatch. Evaluate the input bandwidth and dynamic performance against the Nyquist frequency of the target signal. Confirm that the available supply voltages align with the 2.7 V to 5.5 V operating range and that the thermal dissipation fits the system constraints.

Part Context

The AD9201 belongs to the AD920x family of high-speed CMOS data converters. It shares pin compatibility with the AD9281 dual 8-bit ADC and pairs with the AD9761 dual DAC for complete transmit/receive chains. This series targets mid-resolution, moderate-speed applications where channel matching is critical.

Replacement Considerations

The AD9201ARS is a direct pin-compatible alternative without the RL suffix. For higher resolution needs, consider the AD9231 family. For lower resolution, the AD9281 offers pin compatibility.

FAQ

How is the internal voltage reference configured?

The REFSENSE pin determines the mode: connecting it to VREF selects the 1 V mode, while grounding it selects the 2 V mode.

What is the pipeline latency of the AD9201?

The device exhibits a pipeline latency of three clock cycles between the initiation of conversion and the availability of the corresponding output data.

Can the AD9201 accept single-ended inputs?

Yes, the differential input structure accommodates single-ended signals by tying one input pin to a mid-scale bias voltage while applying the signal to the other.