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LT6402-20 Datasheet(PDF) 1 Page - Linear Technology

Part No. LT6402-20
Description  300MHz Low Distortion, Low Noise Differential Amplifier/ ADC Driver (AV = 20dB)
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT6402-20 Datasheet(HTML) 1 Page - Linear Technology

 
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640220fa
LT6402-20
300MHz Low Distortion, Low
Noise Differential Amplifier/
ADC Driver (AV = 20dB)
The LT®6402-20 is a low distortion, low noise differential
amplifier/ADC driver for use in applications from DC to
300MHz. The LT6402-20 has been designed for ease of
use, with minimal support circuitry required. 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. 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. The output common mode voltage is easily set via
the VOCM pin, eliminating an output transformer or AC-
coupling capacitors in many applications.
The LT6402-20 is designed to meet the demanding require-
ments 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. The LT6402-20 can be used in data
acquisition systems required to function at frequencies
down to DC.
The LT6402-20 operates on a 5V supply and consumes
30mA.Itcomesinacompact16-lead3mm×3mmQFNpack-
age and operates over a –40°C to 85°C temperature range.
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/Buffering
300 MHz –3dB Bandwidth
Fixed Gain of 20dB
Low Distortion:
51dBm OIP3, –81dBc HD3 (20MHz, 2VP-P)
Low Noise:
12.4dB NF, en = 1.9nV/√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 Profile 16-Lead 3mm × 3mm QFN
Package
APPLICATIO S
FEATURES
DESCRIPTIO
TYPICAL APPLICATIO
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
6402 TA01a
IF IN
LT6402-20
–INA
–INB
VOCM
VCC
VEE
5V
+INB
+INA
10
10
LTC®2249
0.1
µF
0.1
µF
0.1
µF
0.1
µF
+OUT
–OUT
AIN+
AIN
VCM
Distortion vs Frequency, Differential
Input, No RLOAD
FREQUENCY (MHz)
1
–100
–90
–80
–70
–60
–40
10
100
64022 G08
–50
HD2
HD3
FILTERED OUTPUTS
VOUT = 2VP-P


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