LTC1742CFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1742CFW#TRPBF is a 14-bit, 65Msps pipelined analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5V supply and dissipates approximately 1.275W. 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 76.5dB and a Spurious Free Dynamic Range (SFDR) of 90dB with a 3.2V range at a 5MHz input frequency. It utilizes a 48-lead TSSOP package and includes an internal 2.35V reference.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with no missing codes and 65Msps sampling rate
• Pin-selectable input ranges: –1V (SENSE to GND) or –1.6V (SENSE to VDD)
• Low aperture jitter of 0.15ps RMS for high-frequency undersampling
• Digital interface compatible with 5V, 3V, 2V, and LVDS logic levels

Analog To Digital Converters (ADC) Applications

• Telecommunications systems
• Cellular base station receivers
• Spectrum analysis equipment
• Imaging systems requiring wide dynamic range

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm that the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the ordering information matches the manufacturer's current datasheet specifications for the 48-TSSOP variant.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-speed digitization of wide dynamic range signals. The 14-bit resolution and 65Msps speed are suitable for IF sampling. Consider the 48-pin TSSOP footprint for board layout constraints. Verify that the required input drive impedance can be maintained below 100Ω per input for optimal SFDR performance.

Analog To Digital Converters (ADC) Part Context

The LTC1742 belongs to a family of high-speed ADCs including the LTC1741 (12-bit), LTC1743/LTC1744 (50Msps), and LTC1745/LTC1746 (25Msps). These devices share pin compatibility within their respective speed grades, facilitating design upgrades or downgrades without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

For direct pin-compatible replacements within the same speed grade, consider the LTC1741CFW#TRPBF (12-bit version). For higher resolution at the same speed, the LTC1742 is the primary option in this specific family tier.