ADC3908S025IRSMT

Analog To Digital Converters (ADC) Overview

The ADC3908S025IRSMT is a single-channel, 8-bit successive approximation register (SAR) analog-to-digital converter from the Texas Instruments ADC3908 series. It operates at a sampling rate of 25 MSPS with an input bandwidth of 150 MHz (-3 dB). The device features ultra-low power consumption of 40 mW at this speed and offers a latency of only one clock cycle. It integrates a 1.2 V internal reference and supports buffered, differential, or single-ended inputs. Data output utilizes parallel SDR/DDR CMOS interfaces compatible with 1.8 V or 3.3 V I/O levels. The component is housed in a compact 32-pin VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Single-channel 8-bit SAR architecture with 25 MSPS sampling rate
• Ultra-low power consumption: 40 mW at 25 MSPS, scaling down to 3 mW in power-down mode
• Minimal latency of one clock cycle for high-speed control loops
• Integrated 1.2 V reference and 150 MHz input bandwidth

Analog To Digital Converters (ADC) Applications

• Battery-powered portable instrumentation
• Industrial process control systems
• Medical imaging equipment requiring low power and high speed

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IRSMT against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and tape-and-reel specifications. Ensure compatibility with 1.8 V or 3.3 V digital interface voltages as defined in the interface configuration table. Check for industrial temperature range certification (-40°C to +105°C) if operating in harsh environments.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC3908S025IRSMT when a single-channel solution is required instead of the dual-channel ADC3908D variant. Compare power consumption requirements against higher-speed models like the ADC3908S125 (61 mW at 125 MSPS). Ensure the system design accommodates the 32-pin VQFN (4 mm x 4 mm) footprint and provides the necessary external common-mode voltage for the analog input stage.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC3908 family, which includes 8-bit and 10-bit resolution variants with sampling rates of 25, 65, and 125 MSPS. The 'S' designation indicates a single-channel device, distinguishing it from the 'D' (dual-channel) series. All members share pin compatibility and similar architectural features, allowing for design flexibility across different channel count and speed requirements within the same package.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include ADC3908S065 (65 MSPS), ADC3908S125 (125 MSPS), and 10-bit variants such as ADC3910S025. Verify that the increased speed or resolution of substitutes meets the power budget and interface timing constraints of the existing design.