LTC1747CFW#PBF

Analog To Digital Converters (ADC) Overview

The LTC1747CFW#PBF is a 12-bit, 80Msps low noise analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It utilizes a pipelined architecture and operates on a single 5V supply with a power dissipation of 1.4W. The device features selectable differential input ranges of –1V or –1.6V, determined by the SENSE pin configuration. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 72dB and a Spurious Free Dynamic Range (SFDR) of 85dB at a 3.2V range. It incorporates an internal reference and offers a digital interface 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-compatible with the 14-bit LTC1748 within the same family
• Selectable input ranges: –1V (SENSE grounded) or –1.6V (SENSE to VDD)
• Ultralow 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 CFW against the datasheet to confirm the commercial temperature range (0°C to 70°C). Confirm that the #PBF designation indicates lead-free compliance. Check current availability status as high-speed ADCs may have limited stock or long lead times depending on the distributor.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1747CFW#PBF when a 12-bit resolution at 80Msps is required. Ensure the application can accommodate the 1.4W power dissipation. Verify that the system requires the specific –1V or –1.6V input ranges supported by this model. Consider the LTC1748 if 14-bit resolution is necessary for the same form factor.

Analog To Digital Converters (ADC) Part Context

The LTC1747 is part of a pin-compatible family of high-speed ADCs from Analog Devices. This family includes variants with different resolutions and sample rates, such as the 14-bit 80Msps LTC1748, the 12-bit 65Msps LTC1741, and the 12-bit 25Msps LTC1745. This compatibility allows for design upgrades without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1748CFW#PBF is a pin-compatible 14-bit alternative within the same package. For lower speed requirements, the LTC1741CFW#PBF (65Msps) or LTC1745CFW#PBF (25Msps) are pin-compatible options in the same family.