ADS4145IRGZ25

Analog To Digital Converters (ADC) Overview

The ADS4145IRGZ25 is a single-channel, 14-bit analog-to-digital converter (ADC) from Texas Instruments. It supports sampling rates up to 125 MSPS with an ultralow-power architecture operating on a single 1.8-V supply. At 125 MSPS, the device consumes 153 mW of total power. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 72.2 dBFS at a 170 MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 81 dBc under the same conditions. The component utilizes a pipeline architecture and is housed in a 48-pin VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Ultralow Power Consumption: Operates on a single 1.8-V supply, consuming 103 mW at 65 MSPS and 153 mW at 125 MSPS.
• High Dynamic Performance: Achieves 72.2 dBFS SNR and 81 dBc SFDR at 170 MHz input frequency.
• Flexible Output Interface: Supports Double Data Rate (DDR) LVDS with programmable swing (350 mV standard or 200 mV low) and strength (100-Ω or 50-Ω), as well as a parallel CMOS interface.
• Programmable Gain: Offers gain options up to 6 dB to optimize SNR/SFDR trade-offs for lower full-scale input ranges.

Analog To Digital Converters (ADC) Applications

• Wireless Communications Infrastructure
• Software-Defined Radio
• Power Amplifier Linearization

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'RGZ25' against the manufacturer's current orderable addendum to confirm package dimensions and tape-and-reel quantities. Confirm that the industrial temperature range (-40°C to +85°C) aligns with system requirements. Ensure compatibility with the 1.8-V AVDD and DRVDD supply rails during design validation.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS4145IRGZ25 when 14-bit resolution and high dynamic performance are required at sampling rates up to 125 MSPS. This model is suitable for multi-carrier, wide bandwidth communications applications. Consider the dynamic power scaling feature if operation at lower sampling rates is anticipated, as it reduces power consumption without performance loss.

Analog To Digital Converters (ADC) Part Context

The ADS4145 belongs to the ADS41xx family of ultra-low-power ADCs, specifically the ADS414x series which provides 14-bit resolution. It shares the same 48-pin VQFN package and core architecture as the ADS4142 (65 MSPS variant). The device is designed to complement other members of the family like the ADS412x (12-bit) and higher-speed variants such as the ADS4146/ADS4149.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS4142 serves as a lower-speed alternative within the same family, offering identical resolution and packaging but limited to 65 MSPS. Designers requiring higher sampling speeds should evaluate the ADS4146 or ADS4149 models, though these may differ in pinout or power characteristics.