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The LTC6400-26 is a high speed differential amplifier for processing DC to 300MHz signals. The device is designed to drive 12-, 14-, and 16-bit ADCs with low noise and distortion, but can also be used as a general-purpose wideband gain block.

The LTC6400-26 offers excellent ease of use and requires minimal support circuitry. The output common-mode voltage is programmed using an external pin independent of the input, eliminating the need for additional transformers or AC coupling capacitors in many applications. Gain is fixed internally at 26dB (20V/V).

The LTC6400-26 saves space and power compared to alternative solutions using IF gain parts and transformers. The LTC6400-26 is packaged in a compact 16-pin 3mm x 3mm QFN package and operates over a temperature range of -40°C to 85°C.

application

Differential ADC Driver

Differential Driver/Receiver

Single-ended to differential conversion

IF sampling receiver

SAW filter connection

1.9GHz -3dB bandwidth

Fixed Gain of 20V/V (26dB)

-94dBc IMD3 at 70MHz (equivalent OIP3 = 51dBm)

-71dBc IMD3 at 300MHz (equivalent OIP3 = 39.5dBm)

1nV/√Hz Internal Op Amp Noise

1.5nV/√Hz Total Noise Referenced to Input

6.8dB noise figure

Differential input and output

50Ω input impedance

2.85V to 3.5V Supply Voltage Range

85mA supply current (255mW)

1V to 1.6V Adjustable Output Common-Mode Voltage

DC or AC coupled operation

4.7VP-P Maximum Differential Output Swing

Small Outline 16-Pin 3mm x 3mm x 0.75mm QFN Package

Shenzhen Yujixin Electronics Co., Ltd.

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