LTC6417IUDC#PBF

LTC6417IUDC#PBF is a differential unity gain buffer that can drive a 50 ohm load with extremely low noise and excellent linearity. It is well suited for driving high-speed 14- and 16bit pipeline ADCs with input signals from DC to beyond 600MHz. Differential input impedance is 18.5Kohm, allowing 1:4 and 1:8 transformers to be used at the input providing additional system gain in 50 ohm systems. With no external biasing or gain setting components and a flow-through pinout, the LTC6417 is very easy to use. It can be DC-coupled and has a common mode output offset of -60mV. The LTC6417 input pins are internally biased to provide an output common mode voltage that is set by the voltage on the VCM pin for AC-coupled applications. It features fast, adjustable output voltage clamping to help protect subsequent circuitry. Applications include differential ADC driver, CCD buffer, cable driver, and 50 ohm buffer.

• DC-coupled signal path, single supply voltage range from 4.75V to 5.25V
• Programmable high speed, fast recovery output clamping
• Input noise voltage density is 1.5nV/√Hz typical at (f = 100KHz, TA = 25°C)
• Input noise current density is 4.3pA/√Hz typical at (f = 100KHz, TA = 25°C)
• Differential output voltage swing is 4.28VP-P typical at (VOUTDIFF, VINDIFF = ±2.3V)
• Common mode rejection ratio is 91dB typical at (IN+ = IN– = 0.65V to 1.85V)
• Supply voltage range from 4.75V to 5.25V, supply current is 123mA typ at (TA = 25°C)
• Power supply rejection ratio is 72dB typical at (TA = 25°C. V+ = 5V)
• Shutdown current is 24mA typical at (VSHDN = 5V, TA = 25°C)
• Operating temperature range from -40°C to 105°C, 20-lead plastic QFN package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party