LTC6400-20 - 1.8GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF

Features

  • Click Here For LTC6400 Evaluation Kits
  • 1.8GHz –3dB Bandwidth
  • Fixed Gain of 10V/V (20dB)
  • –94dBc IMD3 at 70MHz (Equivalent OIP3 = 51dBm)
  • –65dBc IMD3 at 300MHz (Equivalent OIP3 = 36.5dBm)
  • 1nV/rHz Internal Op Amp Noise
  • 2.1nV/rHz Total Input Noise
  • 6.2dB Noise Figure
  • Differential Inputs and Outputs
  • 200ohm Input Impedance
  • 2.85V to 3.5V Supply Voltage
  • 90mA Supply Current (270mW)
  • 1V to 1.6V Output Common Mode Voltage, Adjustable
  • DC- or AC-Coupled Operation
  • Max Differential Output Swing 4.4VP-P
  • Small 16-Lead 3mm × 3mm × 0.75mm QFN Package

Typical Application

LTC6400-20
LTC6400-20
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Description

The LTC6400-20 is a high-speed differential amplifier targeted at processing signals from DC to 300MHz. The part has been specifically designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also be used as a general-purpose broadband gain block.

The LTC6400-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs, which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).

The LTC6400-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6400-20 is packaged in a compact 16-lead 3mm x 3mm QFN package and operates over the –40°C to 85°C temperature range.

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Packaging

QFN-16

LTC6400-20
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6400CUD-14 QFN 16 C $4.57 $3.20 View
LTC6400CUD-14#PBF QFN 16 C $4.57 $3.20 View
LTC6400CUD-14#TR QFN 16 C   $3.26 View
LTC6400CUD-14#TRPBF QFN 16 C   $3.26 View
LTC6400CUD-20 QFN 16 C $4.57 $3.20 View
LTC6400CUD-20#PBF QFN 16 C $4.57 $3.20 View
LTC6400CUD-20#TR QFN 16 C   $3.26 View
LTC6400CUD-20#TRPBF QFN 16 C   $3.26 View
LTC6400CUD-26 QFN 16 C $4.57 $3.20 View
LTC6400CUD-26#PBF QFN 16 C $4.57 $3.20 View
LTC6400CUD-26#TR QFN 16 C   $3.26 View
LTC6400CUD-26#TRPBF QFN 16 C   $3.26 View
LTC6400CUD-8 QFN 16 C $4.57 $3.20 View
LTC6400CUD-8#PBF QFN 16 C $4.57 $3.20 View
LTC6400CUD-8#TR QFN 16 C   $3.26 View
LTC6400CUD-8#TRPBF QFN 16 C   $3.26 View
LTC6400IUD-14 QFN 16 I $5.26 $3.68 View
LTC6400IUD-14#PBF QFN 16 I $5.26 $3.68 View
LTC6400IUD-14#TR QFN 16 I   $3.74 View
LTC6400IUD-14#TRPBF QFN 16 I   $3.74 View
LTC6400IUD-20#PBF QFN 16 I $5.26 $3.68 View
LTC6400IUD-20#TRPBF QFN 16 I   $3.74 View
LTC6400IUD-26 QFN 16 I $5.26 $3.68 View
LTC6400IUD-26#PBF QFN 16 I $5.26 $3.68 View
LTC6400IUD-26#TR QFN 16 I   $3.74 View
LTC6400IUD-26#TRPBF QFN 16 I   $3.74 View
LTC6400IUD-8 QFN 16 I $5.26 $3.68 View
LTC6400IUD-8#PBF QFN 16 I $5.26 $3.68 View
LTC6400IUD-8#TR QFN 16 I   $3.74 View
LTC6400IUD-8#TRPBF QFN 16 I   $3.74 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Evaluation Kits

Part Number Description Price
DC987B-C LTC6400-20 3GHz Fully Differential ADC Driver Demo Circuit $80.00
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Applications

  • Differential ADC Driver
  • Differential Driver/Receiver
  • Single Ended to Differential Conversion
  • IF Sampling Receivers
  • SAW Filter Interfacing
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Simulate

Linear Technology offers several options for simulating our high performance operational amplifiers.

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