LTC1746IFW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1746IFW#PBF is a 14-bit, 25Msps pipeline analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 5V supply with a power dissipation of 390mW. The device features pin-selectable differential input ranges of ±1V or ±1.6V and includes an internal 2.35V reference. Key performance metrics include a signal-to-noise ratio (SNR) of 77.5dB and spurious-free dynamic range (SFDR) of 91dB at a 5MHz input in the 3.2V range. It utilizes a parallel digital interface compatible with 5V, 3V, and 2V logic systems.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with no missing codes over temperature
• 25Msps sampling rate with 77.5dB SNR and 91dB SFDR
• Pin-selectable input ranges: ±1V (SENSE to GND) or ±1.6V (SENSE to VDD)
• Low aperture jitter of 0.3ps RMS for undersampling applications

Analog To Digital Converters (ADC) Applications

• Telecommunications base stations
• Medical imaging systems
• Spectrum analysis equipment
• High-performance receivers

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as indicated by the #PBF suffix. Check current lifecycle status, as older components may be subject to obsolescence notices. Ensure proper handling for ESD-sensitive TSSOP-48 packaging during storage and assembly.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1746IFW#PBF when a 14-bit resolution and 25Msps throughput are required. Choose this part if a single 5V supply is preferred over lower voltage alternatives. Consider the ±1V or ±1.6V input range options based on the source signal amplitude. Verify that the parallel interface timing meets the system's DSP or FPGA requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1746 family of low-power, high-speed ADCs. It is pin-compatible with other members of the series, such as the 12-bit LTC1745 and higher-speed variants like the LTC1744 (50Msps) and LTC1742 (65Msps). This allows for design flexibility across different speed and resolution requirements within the same package footprint.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC1745CFW#PBF (12-bit) for lower resolution needs, or the LTC1744IFW#PBF (50Msps) for higher speed. Note that these parts have different bit resolutions or sampling rates and must be evaluated for functional compatibility.