ADS808Y/250G4

Analog To Digital Converters (ADC) Overview

The ADS808Y/250G4 is a 12-bit, 70MHz sampling pipelined analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a high-bandwidth track-and-hold amplifier with low jitter of 0.25ps rms and supports differential or single-ended inputs. The device operates on a +5V analog supply and accepts 3V or 5V digital logic. Key electrical parameters include a Signal-to-Noise Ratio (SNR) of 64dB at 10MHz input frequency, Spurious-Free Dynamic Range (SFDR) of 68dB, and a typical power dissipation of 740mW. It is housed in a TQFP-48 PowerPAD package.

Analog To Digital Converters (ADC) Feature Summary

• High dynamic range performance with SNR of 64dB and SFDR of 68dB at 10MHz input frequency
• Low jitter track-and-hold amplifier (0.25ps rms) supporting up to 70MHz sampling rate
• Flexible clocking accepting differential or single-ended signals down to 0.5Vp-p
• Selectable full-scale input ranges (1Vp-p, 1.5Vp-p, or 2Vp-p) via internal reference configuration

Analog To Digital Converters (ADC) Applications

• Base station wideband radios including CDMA, GSM, TDMA, 3G, AMPS, and NMT
• Test instrumentation equipment
• CCD imaging systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the G4 suffix indicates lead-free compliance and RoHS standards. Confirm the /250 designation corresponds to tape and reel packaging containing 250 units per reel. Ensure the TQFP-48 PowerPAD package matches the thermal requirements of the target PCB layout.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-speed digitization of wideband signals with minimal aperture jitter. Consider the 5V analog supply requirement and the specific input common-mode voltage needs. Evaluate the trade-off between the selectable input ranges (1Vp-p to 2Vp-p) based on required signal-to-noise ratio versus distortion performance.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS808 family of high-performance ADCs. The Y designator specifies the commercial temperature range of -40°C to +85°C. The G4 suffix denotes environmental compliance, while /250 indicates the specific reel quantity for manufacturing assembly.

Analog To Digital Converters (ADC) Replacement Considerations

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