ADS5220PFBR

Analog To Digital Converters (ADC) Overview

The ADS5220PFBR is a 12-bit, 40MSPS pipeline analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates from a single +3.3V supply and features a TQFP-48 package with a specified temperature range of -40°C to +85°C. The device supports both single-ended and fully differential analog inputs with a programmable full-scale range of 1Vpp to 2Vpp. Key electrical specifications include a signal-to-noise ratio (SNR) of 70dB, a spurious-free dynamic range (SFDR) of 88dBFS at 2.4MHz input, and a power dissipation of 195mW. It includes an internal reference, digital error correction logic, and duty-cycle adjust circuitry.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 40MSPS sampling rate in a TQFP-48 package
• High performance metrics: 70dB SNR and 88dBFS SFDR at 2.4MHz input frequency
• Low power consumption of 195mW with standard and quasi-power-down modes
• Programmable input range (1Vpp to 2Vpp) via internal or external reference configuration

Analog To Digital Converters (ADC) Applications

• Wireless local loop systems
• Medical imaging equipment
• Portable instrumentation
• General communications applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix 'BR' indicates a tape and reel quantity of 2000 units as per the manufacturer's packaging data. Confirm that the component meets RoHS3 compliance standards. Ensure handling precautions are observed due to electrostatic discharge sensitivity ratings for the analog and digital inputs.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 40MSPS throughput are required within a single +3.3V supply constraint. The ADS5220PFBR is suitable for designs needing low power dissipation (195mW) and high linearity (0.3LSB DNL). Consider the TQFP-48 package dimensions if surface-mount space is limited compared to the QFN alternative.

Analog To Digital Converters (ADC) Part Context

The ADS5220PFBR belongs to the ADS5220 family of pipeline ADCs. It shares core architectural features with variants like the ADS5220PFBT, differing primarily in packaging quantity and reel specifications. The device utilizes a three-section pipeline architecture comprising a 3-bit quantizer, eight 1.5-bit stages, and a 4-bit flash converter.

Analog To Digital Converters (ADC) Replacement Considerations

Public documentation identifies the ADS4122IRGZT as a substitute part number for the ADS5220 series. Verify pin compatibility and electrical parameter alignment before implementation.

Analog To Digital Converters (ADC) FAQ

What is the minimum sampling rate for the ADS5220?

The minimum sampling rate is 1MSPS. This requirement ensures that the switched-capacitor track-and-hold stages maintain charge accuracy and prevent droop errors.

How is the input full-scale range configured?

The input full-scale range is selectable between 1Vpp and 2Vpp by configuring the RSEL and VREF pins. A 2Vpp range corresponds to a 1.0V internal reference, while a 1Vpp range corresponds to a 0.5V internal reference.

Does the ADS5220 support duty-cycle adjustment?

Yes, the device includes an on-chip duty-cycle adjust (DCA) circuit. Activating this feature via the Mode Select pin allows the converter to accommodate incoming clock duty cycles ranging from 35% to 65% and re-time them to 50%.