LT6402-20

• Product introduction

LT6402-20300MHz low distortion, low noise differential amplifier/ADC driver

peculiarity

• 300 MHz –3dB Bandwidth-3dB bandwidth of 300MHz
• Fixed Gain of 20dBFixed gain of 20dB
• Low Distortion:Low distortion:
  48.5dBm OIP3, –81dBc HD3 (20MHz, 2V_{P- P})OIP3 at 48.5dBm, HD3 at -81dBc (20MHz, 2V_P-P）
• Low Noise:Low noise:
  12.4dB NF, en = 1.9nV/√Hz (20MHz)12.4dB NF, EN = 1.9nV/√Hz (for 20MHz)
• Differential Inputs and OutputsDifferential inputs and outputs
• Additional Filtered OutputsAdditional filter output
• Adjustable Output Common Mode VoltageAdjustable output common-mode voltage
• DC- or AC-Coupled OperationDC or AC coupling operation
• Minimal Support Circuitry RequiredMinimum support circuitry
• Small 0.75mm Profi le 16-Lead 3mm × 3mm QFN PackageSmall 0.75mm Leeler 16 lead 3mm x 3mm QFN package description

  The LT6402-20 is a low distortion, low noise differential amplifier/ADC driver for use in applications from DC to 300MHz. The LT6402-20 is a low distortion, low noise differential amplifier/ADC driven from dc to 300MHz applications. The LT6402-20 has been designed for ease of use, with minimal support circuitry required. The LT6402-20 has been designed to be easy to use and requires minimal support circuitry. Exceptionally low input-referred noise and low distortion (with either single-ended or differential inputs) make the LT6402-20 an excellent solution for driving high speed 12-bit and 14-bit ADCs. Very low input noise and low distortion (single-ended or differential input) make it an excellent solution for driving the LT6402-20 of high speed 12-bit and 14-bit ADCs. In addition to the normal unfiltered outputs (+OUT and –OUT), the LT6402-20 has a built-in 75MHz differential low pass filter and an additional pair of filtered outputs (+OUTFILTERED, – OUTFILTERED) to reduce external filtering components when driving high speed ADCs. IN ADDITION TO THE NORMALLY FILTERED OUTPUTS (+OUT AND -OUT), the LT6402-20 HAS A BUILT-IN 75UMHz differential low-pass filter and an additional filtering output pair (+OUTFILTERED, OUTFILTERED) TO REDUCE EXTERNAL FILTERING COMPONENTS WHEN DRIVING IN THE HIGH-SPEED ADC. The output common mode voltage is easily set via the V_OCMpin, eliminating an output transformer or AC-coupling capacitors in many applications. Easily set the output common-mode voltage via V_OCMPins, eliminating output transformers or AC coupling capacitors in many applications.

  The LT6402-20 is designed to meet the demanding requirements of communications transceiver applications.The LT6402-20 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in other applications requiring differential drive.It can be used in differential ADC drivers, general-purpose differential gain blocks, or in other applications where differential drive is required. The LT6402-20 can be used in data acquisition systems required to function at frequencies down to DC.The LT6402-20 can be used in data acquisition systems where the required functions are down to dc at frequency.

  The LT6402-20 operates on a 5V supply and consumes 30mA.The LT6402-20 5V supply consumes 30 mA. It comes in a compact 16-lead 3mm × 3mm QFN package and operates over a –40ºC to 85ºC temperature range.It is available in a compact 16-lead 3mm ×3mm QFN package and operates over a temperature range of -40°C to 85°C.

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