LTC1747CFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1747CFW#TRPBF is a 12-bit, 80Msps pipelined analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5V supply with 1.4W power dissipation and features selectable differential input ranges of –1V or –1.6V via the SENSE pin. The device delivers 72dB SNR and 85dB SFDR at 5MHz in the 3.2V range, with ultralow jitter of 0.15ps RMS. It utilizes a 48-lead TSSOP package and includes a resistor-programmable mode for input optimization.

Analog To Digital Converters (ADC) Feature Summary

• 80Msps sampling rate with 12-bit resolution and no missing codes
• Selectable input ranges: –1V (SENSE grounded) or –1.6V (SENSE to VDD)
• Low noise performance: 72dB SNR and 85dB SFDR at 5MHz input
• Ultralow aperture jitter of 0.15ps RMS for high-frequency undersampling

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the CFW variant meets the required commercial temperature range of 0°C to 70°C. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure authenticity and correct revision level.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-speed digitization of wide dynamic range signals. Ensure the source impedance is matched to 50Ω for optimal SFDR. Verify that the digital interface logic levels (5V, 3V, 2V, or LVDS) are compatible with the downstream DSP or FIFO using the OVDD supply.

Analog To Digital Converters (ADC) Part Context

This model belongs to the LTC174x family of high-speed ADCs. It is pin-compatible with the 14-bit LTC1748 and other variants in the series such as the LTC1746 (25Msps) and LTC1744 (50Msps). This allows for design flexibility across different speed and resolution requirements within the same footprint.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1747IFW is the industrial temperature grade equivalent (-40°C to 85°C). For higher resolution needs, the LTC1748 offers 14-bit performance at the same 80Msps speed. Lower speed alternatives include the LTC1746 (14-bit, 25Msps) and LTC1745 (12-bit, 25Msps).