Features: ` 300 MHz 3dB Bandwidth
` Fixed Gain of 6dB
` Low Distortion:
49dBm OIP3, 85dBc HD3 (20MHz, 2VP-P)
` Low Noise:
18.6dB NF, en = 3.8nV/Hz (20MHz)
` Differential Inputs and Outputs
` Additional Filtered Outputs
` Adjustable Output Common Mode Voltage
` DC- or AC-Coupled Operation
` Minimal Support Circuitry Required
` Small 0.75mm Profi le 16-Lead 3mm * 3mm QFN PackageApplication· Differential ADC Driver for:
Imaging
Communications
· Differential Driver/Receiver
· Single Ended to Differential Conversion
· Differential to Single Ended Conversion
· Level Shifting
· IF Sampling Receivers
· SAW Filter Interfacing/BufferingPinout
SpecificationsTotal Supply Voltage (VCCA/VCCB/VCCC to
VEEA/VEEB/VEEC) .......................................................5.5V
Input Current (+INA, INA, +INB, INB,
VOCM, ENABLE) ...................................................±10mA
Output Current (Continuous)
+OUT, OUT ......................................................±100mA
+OUTFILTERED, OUTFILTERED ..........................±30mA
Output Short-Circuit Duration (Note 2) ........... Indefi nite
Operating Temperature Range (Note 3).... 40 to 85
Specifi ed Temperature Range (Note 4) .... 40 to 85
Storage Temperature Range ................... 65 to 125
Junction Temperature ............................................ 125
DescriptionThe LT®6402-6 is a low distortion, low noise differential amplifi er/ADC driver for use in applications from DC to 300MHz. The LT6402-6 has been designed for ease of use, with minimal support circuitry required. ceptionally low input-referred noise and low distortion (with either single-ended or differential inputs) make the LT6402-6 an excellent solution for riving high speed 12-bit and 14-bit ADCs. In addition to the normal unfi ltered utputs (+OUT and OUT), the LT6402-6 has a built-in 75MHz differential low pass fi lter and an additional pair of fi ltered outputs (+OUTFILTERED, UTFILTERED) to reduce external fi ltering components when driving high speed ADCs. The output common mode voltage is easily set via the VOCM pin, eliminating an output transformer or AC-coupling capacitors in many applications.
The LT6402-6 is designed to meet the demanding requirements of communications transceiver applications. It can be sed as a differential ADC driver, a general-purpose differential gain block, or in other applications requiring differential rive. The LT6402-6 can be used in data acquisition systems required to function at frequencies down to DC.
The LT6402-6 operates on a 5V supply and consumes 30mA. It comes in a compact 16-lead 3mm * 3mm QFN package and operates over a 40 to 85 temperature range.
LT6402-6 Data Sheet
