LTC1741CFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1741CFW#TRPBF is a 12-bit, 65Msps low noise analog-to-digital converter (ADC) from Analog Devices. It operates on a single 5V supply with a power dissipation of 1.275W. The device features pin-selectable input ranges of –1V or –1.6V differential via the SENSE pin. Key performance metrics include a sample-and-hold bandwidth of 240MHz and ultralow jitter of 0.15ps RMS. At 5MHz input, it achieves 72dB SNR and 85dB SFDR in the 3.2V range. The component utilizes a 48-lead TSSOP package and supports digital interfaces compatible with 5V, 3V, 2V, and LVDS logic systems.

Analog To Digital Converters (ADC) Feature Summary

• 65Msps sampling rate with 12-bit resolution and no missing codes
• Pin-selectable input ranges: –1V (SENSE to GND) or –1.6V (SENSE to VDD)
• Ultralow aperture jitter of 0.15ps RMS for high-frequency undersampling
• Single 5V supply operation with 1.275W typical power dissipation

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 indicates the commercial temperature range (0°C to 70°C) and TSSOP package. Confirm the #TRPBF designation corresponds to tape and reel packaging. Ensure compatibility with the required operating environment before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring 65Msps throughput with low noise performance. Choose the 3.2V range for optimal SNR at lower frequencies or the 2V range for better harmonic rejection. Ensure the source impedance is matched to 50Ω per input for best dynamic performance.

Analog To Digital Converters (ADC) Part Context

The LTC1741 belongs to a pin-compatible family of ADCs that includes the LTC1742 (14-bit), LTC1743 (12-bit, 50Msps), and LTC1744 (14-bit, 50Msps). This allows for design flexibility across different speed and resolution requirements without changing the board layout.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC1742CFW#TRPBF for higher resolution or the LTC1743CFW#TRPBF for lower speed/power needs. Verify that the alternative part's input range and timing characteristics meet the system requirements.

Analog To Digital Converters (ADC) FAQ

How is the analog input range selected?

The input range is selected by connecting the SENSE pin (Pin 1) to ground for a –1V differential range or to VDD for a –1.6V differential range.

What is the data latency of the LTC1741?

The LTC1741 has a data latency of 5 cycles due to its four-stage pipelined architecture.

Can the output drivers operate with voltages other than 5V?

Yes, the OVDD supply for the output drivers can range from 0.5V to 5V, allowing direct connection to low-voltage DSPs or FIFOs.