LTC1748IFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1748IFW#TRPBF is an 80Msps, 14-bit pipelined analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 5V supply and dissipates approximately 1.4W of power. The device features a selectable differential input range of –1V or –1.6V, determined by the SENSE pin configuration. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 76.3dB and a Spurious Free Dynamic Range (SFDR) of 90dB with a 3.2V range. It utilizes a 48-pin TSSOP package and includes a flow-through pinout to simplify board layout.

Analog To Digital Converters (ADC) Feature Summary

• 80Msps sampling rate with 14-bit resolution and no missing codes
• Ultralow aperture jitter of 0.15ps RMS for high-frequency undersampling
• Selectable input ranges: –1V (SENSE grounded) or –1.6V (SENSE to VDD)
• Digital interface compatible with 5V, 3V, 2V, and LVDS logic systems

Analog To Digital Converters (ADC) Applications

• Telecommunications systems
• Cellular base stations
• Spectrum analysis equipment
• Imaging systems

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix #TRPBF indicates tape-and-reel packaging, as this affects handling and storage requirements compared to tube-packaged variants. Confirm component authenticity through authorized distribution channels. Check for RoHS compliance status and ensure the operating temperature range matches the 'I' grade specification (-40°C to 85°C).

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1748 when high dynamic range and low noise are required at 80Msps. Ensure the input drive circuitry can support the specified source impedance (optimized for 50Ω) to maintain SFDR performance. Verify that the digital output voltage levels (OVDD) are compatible with the downstream DSP or FIFO logic families.

Analog To Digital Converters (ADC) Part Context

The LTC1748 belongs to a pin-compatible family of high-speed ADCs from Analog Devices. It shares the same 48-pin TSSOP footprint and pinout with other models in the series, such as the 25Msps LTC1746, 50Msps LTC1744, and 65Msps LTC1742, allowing for design flexibility across different speed requirements.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC1746 (25Msps), LTC1744 (50Msps), and LTC1742 (65Msps). These alternatives offer lower sampling rates but maintain the same package and interface compatibility.