LTC6401IUD-26#TRPBF

Overview

The LTC6401IUD-26#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 140MHz. It features a fixed gain of 26dB (20V/V) and a 1.6GHz -3dB bandwidth. The device operates on a supply voltage between 2.85V and 3.5V with a typical current consumption of 45mA. Key electrical specifications include an input-referred noise density of 1.5nV/√Hz, a common mode rejection ratio of 75dB, and a slew rate of 3.3kV/μs. It utilizes a 16-lead 3mm × 3mm QFN package.

Feature Summary

• Provides low noise and low distortion performance specifically optimized for driving 12-, 14-, and 16-bit ADCs.
• Features an externally adjustable output common mode voltage pin that eliminates the need for transformers or AC-coupling capacitors in many applications.
• Includes internal low-pass filtering at the +OUTF/-OUTF pins with a 590MHz -3dB bandwidth for additional signal conditioning.

Applications

• Differential ADC Driver
• IF Sampling Receivers
• Single Ended to Differential Conversion

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging and lead-free finish. Confirm the 'I' grade designation ensures guaranteed specified performance over the full industrial temperature range of –40°C to 85°C. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure authenticity and correct revision level before integration into production designs.

Selection Notes

Select this component when a fixed 26dB gain is required for broadband applications up to 140MHz. Compare against the LTC6400-26 if lower distortion is prioritized over power efficiency, as the LTC6400 family consumes higher current. Ensure the 50Ω differential input impedance matches the source requirements without additional matching networks for optimal noise figure performance.

Part Context

This part belongs to the LTC6401-26 series of high-speed differential amplifiers. It shares the same fixed gain and general architecture as the commercial grade LTC6401CUD-26 variant but is distinguished by its industrial temperature rating. The device serves as a direct interface solution between RF front-ends and high-speed data converters.

Replacement Considerations

The LTC6401CUD-26#TRPBF is a compatible alternative within the same family, differing only in the guaranteed operating temperature range (0°C to 70°C). No other direct pin-compatible substitutes are documented in the provided datasheet.