AD9204BCPZ-20

Overview

The AD9204BCPZ-20 is a dual-channel, 10-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 20 MSPS. It utilizes a multistage differential pipeline architecture with output error correction logic to ensure no missing codes across the full operating temperature range. The device features a high-performance sample-and-hold circuit and an on-chip voltage reference. It operates from a single 1.8 V analog supply (AVDD) and supports digital output driver supplies (DRVDD) ranging from 1.8 V to 3.3 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 61.7 dBFS at a 9.7 MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 78 dBc under the same conditions. The ADC accepts differential inputs with a scalable span of 1 V p-p to 2 V p-p.

Feature Summary

• Dual-channel architecture with integrated sample-and-hold and voltage reference
• Supports offset binary, gray code, or twos complement data formats
• Programmable clock divider and duty cycle stabilizer for flexible clocking
• Serial Port Interface (SPI) for configuration and built-in self-test patterns

Applications

• Diversity radio systems
• Multimode digital receivers
• I/Q demodulation systems
• Smart antenna systems
• Battery-powered instruments

Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's current ordering guide to confirm package type and RoHS compliance status. Ensure that the required thermal management solutions are compatible with the LFCSP-64 package specifications provided in the datasheet. Confirm that the design supports the specified 1.8 V analog and 1.8 V to 3.3 V digital supply requirements.

Selection Notes

Select this component when a low-power, dual-channel 10-bit ADC is required for applications up to 20 MSPS. Consider the AD9204-40, -65, or -80 variants if higher sampling rates are needed, as they share pin compatibility. Evaluate the power consumption figures for both standby and active modes to ensure they meet system energy constraints. Verify that the input common-mode voltage range aligns with the signal source characteristics.

Part Context

The AD9204 belongs to a family of low-power, dual-channel ADCs from Analog Devices. It is pin-compatible with other devices in the series such as the AD9268, AD9251, AD9258, and AD9231, facilitating migration between different resolution and speed grades within the same package footprint. This compatibility simplifies board redesigns when upgrading system performance requirements without altering the physical layout.

Replacement Considerations

The AD9204-40, AD9204-65, and AD9204-80 are direct pin-compatible upgrades offering higher sampling rates. For lower speed requirements, verify if the AD9204-20 meets all AC specifications. Cross-reference with the AD9268, AD9251, AD9258, and AD9231 for potential migration paths within the same package family.