ADS41B29IRGZ25

Analog To Digital Converters (ADC) Overview

The ADS41B29IRGZ25 is a 12-bit, 250MSPS ultralow-power analog-to-digital converter (ADC) from Texas Instruments. It features integrated high-impedance analog input buffers with 2pF input capacitance and 3kΩ input resistance. The device operates on a 1.8V analog supply (AVDD), a 3.3V buffer supply (AVDD_BUF), and a 1.8V digital supply (DRVDD). Key performance metrics include a typical SNR of 69.7dBFS and an SFDR of 89dBc at 20MHz input frequency. It supports DDR LVDS and parallel CMOS output interfaces.

Analog To Digital Converters (ADC) Feature Summary

• Integrated High-Impedance Analog Input Buffers: Eliminates external matching components with 2pF input capacitance and 3kΩ input resistance.
• Ultralow Power Consumption: Consumes 180mW for analog power, 96mW for buffer power, and 135mW for I/O power at 250MSPS.
• High Dynamic Performance: Achieves 69.7dBFS SNR and 89dBc SFDR at 20MHz input frequency.
• Flexible Output Interfaces: Supports Double Data Rate (DDR) LVDS with programmable swing/strength and 1.8V Parallel CMOS.

Analog To Digital Converters (ADC) Applications

• PA linearization in wireless infrastructure
• Multi-carrier wide bandwidth communications
• Software-defined radio systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'RGZ25' against the official datasheet ordering information. The provided documentation lists 'RGZR' and 'RGZT' as standard tape and reel options. Confirm if 'RGZ25' denotes a specific packaging quantity or variant not explicitly detailed in the standard table. Ensure the component matches the QFN-48 package dimensions and lead finish specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS41B29 for 12-bit resolution requirements; choose the ADS41B49 if 14-bit resolution is needed. Both devices share identical pinouts and power characteristics. Consider the integrated analog buffers to simplify front-end design. Ensure the system can support the required 3.3V supply for the buffer section alongside the 1.8V logic supplies.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS4xxx family of ultralow-power ADCs. It is functionally similar to the ADS41B29 but distinguished by the specific ordering suffix. The device is designed for applications requiring high dynamic performance with minimal power consumption, leveraging innovative design techniques to maintain signal integrity at high sampling rates.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS41B49 is a direct pin-compatible alternative offering 14-bit resolution instead of 12-bit. Other members of the ADS4xxx family may offer different sampling rates or resolutions but require verification of pinout and register compatibility before substitution.