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LT6402-12

更新时间： 2023-12-20 18:46:37
品牌 Logo 应用领域
亚德诺 - ADI 放大器驱动驱动器
页数 文件大小 规格书
16页 234K
描述
300MHz 低失真、低噪声差分放大器/ADC 驱动器 (AV = 12dB)

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LT6402-12 数据手册

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LT6402-12  
300MHz Low Distortion, Low  
Noise Differential Amplifier/  
ADC Driver (A = 12dB)  
DESCRIPTION  
V
FEATURES  
n
300 MHz –3dB Bandwidth  
The LT®6402-12 is a low distortion, low noise differential  
amplifier/ADC driver for use in applications from DC to  
300MHz. The LT6402-12 has been designed for ease of  
use,withminimalsupportcircuitryrequired.Exceptionally  
low input-referred noise and low distortion (with either  
single-ended or differential inputs) make the LT6402-12  
an excellent solution for driving high speed 12-bit and  
14-bit ADCs. In addition to the normal unfiltered outputs  
(+OUT and –OUT), the LT6402-12 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  
n
Fixed Gain of 12dB  
n
Low Distortion:  
43dBm OIP3, –82dBc HD3 (20MHz, 2V  
)
P-P  
n
Low Noise:  
15dB NF, e = 2.6nV/√Hz (20MHz)  
n
n
n
n
n
n
n
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  
the V  
pin, eliminating an output transformer or AC-  
OCM  
coupling capacitors in many applications.  
APPLICATIONS  
n
TheLT6402-12isdesignedtomeetthedemandingrequire-  
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 LT6402-12 can be used in data  
acquisition systems required to function at frequencies  
down to DC.  
Differential ADC Driver for:  
Imaging  
Communications  
n
Differential Driver/Receiver  
n
Single Ended to Differential Conversion  
n
Differential to Single Ended Conversion  
n
Level Shifting  
IF Sampling Receivers  
SAW Filter Interfacing/Buffering  
n
TheLT6402-12operatesona5Vsupplyandconsumes30mA.  
It comes in a compact 16-lead 3mm × 3mm QFN package  
and operates over a –40°C to 85°C temperature range.  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Distortion vs Frequency, Differential Input, No RLOAD  
–40  
FILTERED OUTPUTS  
V
= 2V  
OUT  
P-P  
5V  
–50  
–60  
0.1μF  
0.1μF  
–INB  
V
–70  
CC  
V
CM  
–INA  
V
10Ω  
10Ω  
OCM  
+OUT  
+
–
AIN  
0.1μF  
–80  
LT6402-12  
–OUT  
LTC®2249  
HD3  
HD2  
AIN  
0.1μF  
–90  
+INB  
+INA  
IF IN  
V
EE  
64026 TA01a  
–100  
1
10  
FREQUENCY (MHz)  
100  
640212 TA01b  
640212fa  
1
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