Features

• 650MHz -3dB Small Signal Bandwidth
• 450MHz -3dB 2VP-P Large-Signal Bandwidth
• 120MHz ±0.1dB Bandwidth
• High Slew Rate: 2200V/µs
• Fixed Gain of 2; No External Resistors Required
• 72dB Channel Separation at 10MHz
• 50dB Channel Separation at 100MHz
• -80dBc 2nd Harmonic Distortion at 10MHz, 2V_P-P
• -70dBc 3rd Harmonic Distortion at 10MHz, 2V_P-P
• Low Supply Current: 9mA per Amplifier
• 6.5ns 0.1% Settling Time for 2V Step
• I_SS ≤ 500µA per Amplifier when Disabled
• Differential Gain of 0.033%, Differential Phase of 0.022°
• Wide Supply Range: ±2.25V (4.5V) to ±6V (12V)
• Available in 24-Lead SSOP and 24-Lead QFN Packages

Typical Application

Description

The LT6555 is a high speed triple 2:1 video multiplexer with an internally fixed gain of 2. The individual amplifiers are optimized for performance with a double terminated 75 Ohm video load and feature a -3dB 2V_P-P bandwidth of 450MHz, making them ideal for driving very high resolution video signals. Separate power supply pins for each amplifier boost channel separation to 72dB, allowing the LT6555 to excel in many high speed applications.

While the performance of the LT6555 is optimized for dual supply operation, it can also be operated with a single supply as low as 4.5V. Using dual 5V supplies, each amplifier draws only 9mA. When disabled, the amplifiers draw less than 500µA and the outputs become high impedance.

The LT6555 is manufactured on Linear Technology's proprietary low voltage complementary bipolar process and is available in 24-lead SSOP and ultra-compact 24-lead QFN packages.