LTC1743IFW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1743IFW#PBF is a 12-bit, 50Msps pipelined analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 5V supply with a power dissipation of 1000mW. The device features selectable differential input ranges of ±1V or ±1.6V via the SENSE pin. Key performance metrics include a signal-to-noise ratio (SNR) of 72.5dB and spurious-free dynamic range (SFDR) of 85dB at a 3.2V range. It utilizes a 48-lead TSSOP package and supports digital logic voltages from 0.5V to 5V.

Analog To Digital Converters (ADC) Feature Summary

• 50Msps sampling rate with 12-bit resolution and no missing codes
• Selectable input ranges: ±1V (SENSE grounded) or ±1.6V (SENSE to VDD)
• Low aperture jitter of 0.3ps RMS for high-frequency undersampling
• Digital interface compatible with 5V, 3V, and 2V logic systems

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 specific suffix IFW indicates the industrial temperature range (-40°C to 85°C) and TSSOP-48 package. Confirm RoHS compliance status as PBF denotes lead-free. Check current lifecycle status as older Linear Technology parts may be subject to obsolescence notices.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 50Msps sampling rate and 12-bit resolution are required. Ensure the input drive circuit can maintain source impedance below 100Ω to optimize SFDR. Choose between ±1V or ±1.6V ranges based on the application's signal amplitude requirements by configuring the SENSE pin accordingly.

Analog To Digital Converters (ADC) Part Context

The LTC1743 belongs to a pin-compatible family of high-speed ADCs. It shares the same footprint as the 14-bit LTC1744, the 25Msps LTC1745/LTC1746, and the 65Msps LTC1741/LTC1742. This allows for design flexibility across different speed and resolution requirements without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC1744 (14-bit, 50Msps). For lower speed requirements, the LTC1745 (12-bit, 25Msps) or LTC1746 (14-bit, 25Msps) are suitable alternatives.