LTC1747IFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1747IFW#TRPBF is an 80Msps, 12-bit pipelined analog-to-digital converter (ADC) in a 48-lead TSSOP package. It operates on a single 5V supply with 1.4W power dissipation. Key electrical parameters include a 240MHz full-power bandwidth sample-and-hold and ultralow jitter of 0.15ps RMS. In the 3.2V input range, it achieves 72dB SNR and 85dB SFDR at 5MHz; in the 2V range, it provides 70.5dB SNR and 87dB SFDR. The device features pin-selectable input ranges of –1V or –1.6V and supports digital interfaces compatible with 5V, 3V, 2V, and LVDS logic systems.

Analog To Digital Converters (ADC) Feature Summary

• 80Msps sampling rate with 12-bit resolution and no missing codes
• Pin-selectable differential input ranges: –1V (SENSE grounded) or –1.6V (SENSE to VDD)
• Ultralow aperture jitter of 0.15ps RMS for high-frequency undersampling
• Digital output drivers support OVDD from 0.5V to 5V for direct DSP/FIFO interfacing

Analog To Digital Converters (ADC) Applications

• Telecommunications receivers
• Cellular base stations
• Spectrum analysis equipment
• Imaging systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the #TRPBF suffix indicates tape-and-reel packaging. Confirm the 'I' grade temperature range (-40°C to 85°C). Check current availability status as this component may be subject to limited supply or end-of-life transitions.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1747 when 12-bit resolution at 80Msps is required. Choose the -1V range by grounding SENSE or -1.6V by connecting SENSE to VDD. Ensure the source impedance is 50Ω or less for optimal dynamic performance. Verify that the digital interface voltage levels match the target system's OVDD requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC174x family of high-speed ADCs. It is pin-compatible with the 14-bit LTC1748 and shares the same package footprint. Related models include the 65Msps LTC1741/1742 and 50Msps LTC1743/1744 variants within the same series.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1748 is a pin-compatible 14-bit version offering higher resolution but potentially different power characteristics. For lower speed requirements, the LTC1741 (65Msps) or LTC1743 (50Msps) are compatible alternatives.