ADC3581IRSBT

Analog To Digital Converters (ADC) Overview

The ADC3581IRSBT is a single-channel, 18-bit analog-to-digital converter (ADC) from Texas Instruments operating at a fixed sampling rate of 10 MSPS. It features a differential input type and utilizes an SPI interface for configuration alongside a Serial LVDS (SLVDS) digital output interface. The device operates on an analog supply voltage ranging from 1.75 V to 1.85 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 84.3 dBFS, a Differential Nonlinearity (DNL) of 0.7 LSB, and an Integral Nonlinearity (INL) of 7 LSB. It supports both external and internal reference types, consumes 77 mW of power dissipation, and functions within an industrial temperature range of -40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• Ultra-low power consumption with optimized scaling capabilities down to 77 mW at 10 MSPS.
• Low noise floor performance delivering a spectral density of -160 dBFS/Hz.
• Specified 18-bit resolution without missing codes across the full operating range.
• Integrated on-chip digital filter supporting decimation ratios of 2, 4, 8, 16, and 32.

Analog To Digital Converters (ADC) Applications

• High-Speed Data Acquisition
• Industrial Monitoring
• Software Defined Radio
• Power Quality Analyzer
• Source Measurement Unit (SMU)

Analog To Digital Converters (ADC) Procurement Notes

Verify the component authenticity by checking the manufacturer markings against the official datasheet specifications. Ensure the ordering suffix matches the required package and temperature grade. Confirm that the specific revision level aligns with your design requirements before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC3581IRSBT when a fixed 10 MSPS sampling rate is sufficient for the application. Consider this part over the ADC3582 or ADC3583 if lower power consumption is prioritized over higher throughput speeds. Verify that the SLVDS interface compatibility matches the receiving logic or FPGA inputs in the system design.

Analog To Digital Converters (ADC) Part Context

The ADC3581IRSBT belongs to the ADC358x family of low-noise, ultra-low-power 18-bit high-speed ADCs. This family includes the ADC3582 (25 MSPS) and ADC3583 (65 MSPS), which share pin-to-pin compatibility and similar architectural features but offer different maximum sampling rates. All variants utilize the same 40-pin WQFN package.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC3582IRSBT and ADC3583IRSBT are pin-compatible alternatives within the same series offering higher sampling rates of 25 MSPS and 65 MSPS respectively. These parts can be used as replacements if increased throughput is required without changing the PCB layout.

Analog To Digital Converters (ADC) FAQ

What is the latency of the ADC3581IRSBT?

The device offers a latency of 1 clock cycle when using the 1-wire SLVDS interface.

Does the ADC3581 support internal voltage references?

Yes, the ADC3581 supports both external and internal voltage reference options.

What is the analog input bandwidth of the ADC3581?

The analog input bandwidth is 900 MHz at the -3dB point.