Useful for Interfacing Between Different DC Levels
Low Noise and High Bandwidth Suitable for Diverse Applications

Analog Devices (ADI) has announced the LTC6419, a dual 10GHz gain bandwidth differential amplifier product. This product is characterized by very low input voltage noise density of 1.1nV/√Hz, providing excellent SNR performance for wideband signal amplification.

The LTC6419 offers 85dB SFDR (spurious-free dynamic range) at 100MHz with low distortion while driving 2V_P-P signals. Four external resistors set the differential gain of each amplifier. The configuration range spans from unity gain with frequency response of 1GHz and above, to 100 gain with 100MHz bandwidth, and up to maximum 400 gain with 30MHz bandwidth.



At these high frequencies, the LTC6419 provides significantly improved channel-to-channel isolation of 95dB at 100MHz compared to other similar-class dual amplifiers. Additionally, the wide DC common-mode voltage range (0V to 3.5V at input, 0.5V to 3.5V at output) is particularly useful in DC-coupled applications that interface between two different DC levels, such as from the output of an I/Q demodulator to the input of an AD converter.

The LTC6419 dual differential amplifier provides low noise and high bandwidth functionality, making it suitable for many diverse applications such as direct conversion receivers, high-speed sample rate ADC driving, high-speed data acquisition systems, test equipment, high-resolution radar systems, state-of-the-art image sensors, and LIDAR systems.

The LTC6419 has a supply voltage range of 2.7V to 5.25V. Each amplifier features a shutdown pin, allowing each amplifier to be enabled independently, with supply current consumption of only 52mA. When disabled, the supply current is reduced to 100μA per amplifier.