LTC1746CFW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1746CFW#PBF is a 14-bit, 25Msps pipelined analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single 5V supply with a power dissipation of 390mW. The device features pin-selectable input ranges of ±1V or ±1.6V and supports differential or single-ended inputs. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 77.5dB and a Spurious Free Dynamic Range (SFDR) of 91dB at a 5MHz input signal 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 0.3ps RMS aperture jitter
• Pin-selectable input ranges: ±1V (SENSE to GND) or ±1.6V (SENSE to VDD)
• Single 5V analog supply and separate 0.5V to 5V digital output supply

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 the 'C' suffix indicates an industrial temperature range of 0°C to 70°C. Confirm the FW package designation corresponds to the 48-lead plastic TSSOP form factor. Ensure compatibility with the required reference voltage configuration for the selected input range.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 14-bit resolution at 25Msps is required with low power consumption. Choose the ±1.6V range for maximum dynamic range or ±1V for optimized SFDR at lower frequencies. Ensure the driving circuit can provide a source impedance of 50Ω or less per input to maintain specified SNR and SFDR performance.

Analog To Digital Converters (ADC) Part Context

This part 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, allowing for design flexibility across different resolution requirements within the same footprint.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1745CFW#PBF offers 12-bit resolution at the same 25Msps rate and is pin-compatible. For higher speeds, the LTC1744IFW#PBF provides 14-bit resolution at 50Msps.