ADS4149IRGZ25

Analog To Digital Converters (ADC) Overview

The ADS4149IRGZ25 is a 14-bit, 250MSPS analog-to-digital converter (ADC) from Texas Instruments. It operates on a single 1.8V supply with total power consumption of 265mW at maximum sampling rate. The device features a pipeline architecture with differential analog inputs and supports both Double Data Rate (DDR) LVDS and standard parallel CMOS output interfaces. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 70.6dBFS at 170MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 84dBc. It includes programmable gain up to 6dB, DC offset correction, and dynamic power scaling capabilities.

Analog To Digital Converters (ADC) Feature Summary

• Ultralow power consumption: 265mW at 250MSPS with 1.8V single supply
• High dynamic performance: SNR 70.6dBFS and SFDR 84dBc at 170MHz
• Flexible output interface: Supports DDR LVDS with programmable swing/strength or parallel CMOS
• Integrated features: Programmable gain (up to 6dB), DC offset correction loop, and dynamic power scaling

Analog To Digital Converters (ADC) Applications

• Multi-carrier, wide bandwidth communications systems
• Software-defined radio (SDR)
• Test and measurement equipment requiring high resolution and speed

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '25' against the official datasheet ordering information. The provided datasheet lists tape and reel options as IRGZR and IRGZT. Confirm if the '25' suffix denotes a specific transport media quantity or variant not explicitly detailed in the standard family comparison table.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring 14-bit resolution at 250MSPS with strict power constraints. Ensure the system can accommodate the 1.8V AVDD and DRVDD supplies. Consider the DDR LVDS interface for high-speed data transfer or CMOS for simpler digital logic integration. Verify input clock amplitude requirements (0.2VPP to 1.5VPP differential).

Analog To Digital Converters (ADC) Part Context

The ADS4149 belongs to the ADS41x family, which is pin-compatible with the previous generation ADS6149 family but utilizes a lower 1.8V supply voltage compared to the 3.3V requirement of the older generation. This architecture enables easy migration while significantly reducing power consumption.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS4146 serves as a lower-speed (160MSPS) alternative within the same 14-bit family. For migration from the legacy ADS6149 family, note the change in supply voltage from 3.3V to 1.8V and the update to the serial register map.