LTC1749IFW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1749IFW#PBF is a 12-bit, 80Msps wide bandwidth analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features an integrated programmable gain amplifier (PGA) front end with selectable input ranges of 2.25Vp-p or 1.35Vp-p. The device operates on a single 5V supply and dissipates approximately 1.45W. Key performance metrics include a signal-to-noise ratio (SNR) of 71.8dB at PGA=0 and 70.2dB at PGA=1, alongside an 87dB spurious-free dynamic range (SFDR). It utilizes a pipeline architecture housed in a 48-lead TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 80Msps sampling rate with 500MHz full power sample-and-hold bandwidth
• Integrated PGA providing 2.25Vp-p or 1.35Vp-p differential input ranges
• Low aperture jitter of 0.15ps RMS enabling effective undersampling
• Digital interface compatible with 5V, 3V, 2V, and LVDS logic systems

Analog To Digital Converters (ADC) Applications

• Direct IF sampling
• Telecommunications receivers
• Cellular base stations
• Spectrum analysis equipment
• Communications test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF for lead-free compliance against current manufacturer documentation. Confirm the operating temperature grade (C for commercial or I for industrial) matches the design requirements. Check for availability as this component may be subject to discontinuation or limited stock status from distributors.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1749IFW#PBF when high linearity and wide dynamic range are required at 80Msps. Ensure the system can handle the 1.45W power dissipation through adequate thermal management. Verify that the external reference circuitry supports the VSENSE pin configuration for the desired input voltage range.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1749 family of high-speed ADCs. It is pin-compatible with the 14-bit 80Msps LTC1750, allowing for potential resolution upgrades without board layout changes. The device is designed for applications requiring digitization of wide dynamic range signals up to 500MHz.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1750IFW#PBF is a confirmed pin-compatible substitute offering 14-bit resolution at the same 80Msps sampling rate.