LTC6419IV#PBF

Overview

The LTC6419IV#PBF is a dual, very high-speed, low distortion differential amplifier from Analog Devices. It features a 10GHz gain-bandwidth product and 1.1nV/√Hz input noise density. The device operates on a supply voltage range of 2.7V to 5.25V, drawing 52mA per amplifier in active mode. It supports fully differential input and output with an adjustable output common mode voltage. The input common mode range includes ground, allowing DC-coupled single-ended or differential inputs. Each channel has an independent shutdown pin reducing current to 100µA. It is housed in a compact 20-lead 4mm × 3mm LQFN package.

Feature Summary

• Dual differential amplifiers with 10GHz gain-bandwidth product for high-frequency signal processing
• Input common mode range includes ground, enabling direct DC coupling of single-ended signals
• Adjustable output common mode voltage via external VOCM pins for flexible ADC interfacing
• Independent shutdown control per channel with low power consumption in disabled state

Applications

• Broadband I/Q amplifiers
• Dual differential ADC driver
• High-speed data-acquisition cards
• Automated test equipment
• Time domain reflectometry
• Communications receivers

Procurement Notes

Verify the specific suffix IV#PBF corresponds to the –40°C to 85°C industrial temperature grade and RoHS compliance. Confirm the 20-lead LQFN package dimensions match your PCB footprint requirements. Ensure supply voltages remain within the 2.7V to 5.25V range during operation. Check that input currents do not exceed absolute maximum ratings if overvoltage conditions occur.

Selection Notes

Select this component when driving differential ADCs requiring high bandwidth and low noise. The inclusion of ground in the input common mode range simplifies single-ended to differential conversion. Consider the external resistor setting for gain and frequency response customization. Evaluate thermal performance given the 52mA supply current per amplifier in the small LQFN package.

Part Context

The LTC6419 belongs to Analog Devices' high-speed linear amplifier family. It is designed specifically for applications demanding wide bandwidth and precise phase balancing. The device integrates two identical channels in a single compact package, optimizing board space for multi-channel systems. It complements other Analog Devices data converters by providing robust front-end signal conditioning.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.