LTC6400-20 - 1.8GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF
- 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
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.
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
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|DC987B-C||LTC6400-20 3GHz Fully Differential ADC Driver Demo Circuit||$80.00|
- Differential ADC Driver
- Differential Driver/Receiver
- Single Ended to Differential Conversion
- IF Sampling Receivers
- SAW Filter Interfacing
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