ADS809Y/250

Analog To Digital Converters (ADC) Overview

The ADS809Y/250 is a 12-bit, 80MHz sampling pipelined analog-to-digital converter (ADC) from Texas Instruments. It features a high-bandwidth track-and-hold with 0.5ps rms jitter and supports differential or single-ended inputs. The device operates on a +4.75V to +5.25V analog supply and accepts 3V or 5V digital logic. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 65dB at 10MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 68dB. It includes an internal reference, over-range flag, and digital error correction, housed in a TQFP-48 PowerPAD package.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 80MS/s sampling rate
• Low jitter track-and-hold amplifier (0.5ps rms)
• Flexible clocking accepting sine or square waves down to 0.5Vp-p
• Selectable full-scale input ranges: 1Vp-p, 1.5Vp-p, or 2Vp-p

Analog To Digital Converters (ADC) Applications

• Base station wideband radios (CDMA, GSM, TDMA, 3G)
• Test instrumentation
• CCD imaging systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix '/250' corresponds to the Tape and Reel quantity of 250 units as defined in the manufacturer's ordering table. Confirm that the 'Y' suffix indicates the commercial temperature range of -40°C to +85°C. Ensure compatibility with the required 3V or 5V digital interface voltage levels for the target system design.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high dynamic range at intermediate frequencies. The 2Vp-p differential input range maximizes SNR, while smaller ranges (1Vp-p or 1.5Vp-p) optimize SFDR. Ensure the driving circuit can provide sufficient slew current for the capacitive input impedance at 80MHz. The device requires a common-mode voltage bias of approximately +2.5V for the analog inputs.

Analog To Digital Converters (ADC) Part Context

The ADS809Y/250 belongs to the ADS809 family of high-speed ADCs. The '/250' suffix specifically denotes the tape and reel packaging configuration containing 250 devices per reel. This part utilizes a TQFP-48 PowerPAD thermally enhanced package to manage power dissipation, which can reach up to 945mW depending on the VDRV supply voltage and reference configuration.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.