ADC3908D125IRSMR

Analog To Digital Converters (ADC) Overview

The ADC3908D125IRSMR is an ultra-low power, 8-bit, dual-channel analog-to-digital converter (ADC) from Texas Instruments. It operates at a sampling rate of 125 MSPS with a latency of only one clock cycle. The device consumes 90 mW at full speed, scaling down to lower power at reduced rates. It features a parallel DDR or SDR CMOS interface compatible with 1.8V or 3.3V I/O levels. Key performance metrics include a signal-to-noise ratio (SNR) of 49.8 dBFS and a spurious-free dynamic range (SFDR) of 60 dBFS at 125 MSPS. It is housed in a 32-pin VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel 8-bit resolution with 125 MSPS sampling rate
• Ultra-low power consumption: 90 mW at 125 MSPS, 3 mW in PD mode
• Minimal latency of one clock cycle for fast control loops
• Integrated 1.2V internal reference voltage

Analog To Digital Converters (ADC) Applications

• Software-defined radio receivers
• Wireless infrastructure base stations
• Test and measurement instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IRSMR' against the official datasheet to confirm the reel quantity and tape specifications. Ensure the operating temperature range matches the industrial specification (-40°C to +105°C). Confirm that the 1.8V analog supply and optional 3.3V digital I/O requirements align with the system design.

Analog To Digital Converters (ADC) Selection Notes

Select this component when low latency and high bandwidth are critical alongside power efficiency. The dual-channel architecture simplifies designs requiring simultaneous sampling. Verify that the 1.9 Vpp differential input range fits the application signal levels. Consider the 32-pin VQFN package size constraints during PCB layout.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC3908 family, which includes single-channel (ADC3908Sx) and dual-channel (ADC3908Dx) variants. The family offers different speed grades (25, 65, and 125 MSPS) and resolutions (8-bit and 10-bit). The ADC3908D125 represents the highest speed option within the dual-channel segment.

Analog To Digital Converters (ADC) Replacement Considerations

Check for pin-compatible alternatives within the same family, such as ADC3908D065 or ADC3908D025, if lower sampling rates suffice. Single-channel versions like ADC3908S125 may be suitable if only one channel is needed.