ADC3542IRSBT

Analog To Digital Converters (ADC) Overview

The ADC3542 is a 14-bit, 25-MSPS analog-to-digital converter from Texas Instruments. It features ultra-low power consumption of 46 mW at full speed and a noise spectral density of –150.7 dBFS/Hz. The device supports SDR, DDR, and serial CMOS interfaces with a latency of one clock cycle. It operates on a single 1.8-V supply and includes an optional on-chip digital filter with decimation capabilities. The component is housed in a 40-WQFN package and functions within an industrial temperature range of –40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 25 MSPS sampling rate
• Ultra-low power: 46 mW at 25 MSPS (SDR CMOS)
• Noise spectral density: –150.7 dBFS/Hz
• Single 1.8-V supply operation
• On-chip digital filter with decimation by 2, 4, 8, 16, 32

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition
• Industrial monitoring
• Thermal imaging
• Software defined radio
• Communications infrastructure

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'RSBT' against the manufacturer's official package option addendum to confirm tape-and-reel packaging details. Ensure the design accounts for the 40-WQFN thermal requirements, specifically the junction-to-ambient resistance of 30.7 °C/W, to maintain operation within the specified –40°C to +105°C industrial temperature range.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC3542 when a 25 MSPS sampling rate is required, as it differs from the 10 MSPS ADC3541 and 65 MSPS ADC3543. Confirm interface compatibility with SDR, DDR, or serial CMOS modes. Verify that the external reference voltage matches the 1.6 V requirement if using the internal buffer, or ensure the REFBUF pin is utilized correctly for a 1.2 V external reference.

Analog To Digital Converters (ADC) Part Context

The ADC3542 belongs to the ADC354x family, which includes the ADC3541 (10 MSPS), ADC3543 (65 MSPS), and ADC3544 (125 MSPS). These devices are pin-to-pin compatible and share identical architectural features, including the 40-WQFN package and single 1.8-V supply design. The family is designed for low-noise, high-dynamic-range applications requiring flexible digital output interfaces.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC3541 and ADC3543 are pin-compatible alternatives within the same family. The ADC3544 is also part of this series but operates at 125 MSPS. Substitution requires verifying that the target sampling rate aligns with the application requirements, as electrical characteristics such as power consumption and jitter may vary between speed grades.

Analog To Digital Converters (ADC) FAQ

What is the latency of the ADC3542?

The ADC3542 has a latency of one clock cycle for both SDR and DDR CMOS interfaces.

How does the power consumption scale with sampling rate?

Power consumption scales with the sampling rate; for example, the ADC3541 consumes 35 mW at 10 MSPS, while the ADC3542 consumes 46 mW at 25 MSPS.

What are the available digital interface options?

The device supports Single Data Rate (SDR) CMOS, Double Data Rate (DDR) CMOS, and Serial CMOS interfaces.