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LTC6406 PDF预览

LTC6406

更新时间: 2024-11-22 14:57:31
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
24页 325K
描述
3GHz、低噪声、轨至轨输入差分放大器/驱动器

LTC6406 数据手册

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LTC6406  
3GHz, Low Noise,  
Rail-to-Rail Input Differential  
Amplifier/Driver  
FEATURES  
DESCRIPTION  
The LTC®6406 is a very low noise, low distortion, fully  
differential input/output amplifier optimized for 3V, single  
supplyoperation.TheLTC6406inputcommonmoderange  
is rail-to-rail, while the output common mode voltage is  
independently adjustable by applying a voltage on the  
n
Low Noise: 1.6nV/√Hz RTI  
n
Low Power: 18mA at 3V  
n
Low Distortion (HD2/HD3):  
–80dBc/–69dBc at 50MHz, 2V  
P-P  
P-P  
–104dBc/–90dBc at 20MHz, 2V  
n
n
n
n
n
n
n
n
Rail-to-Rail Differential Input  
V
pin. This makes the LTC6406 ideal for level-shifting  
OCM  
2.7V to 3.5V Supply Voltage Range  
Fully Differential Input and Output  
Adjustable Output Common Mode Voltage  
800MHz –3dB Bandwidth with A = 1  
Gain-Bandwidth Product: 3GHz  
Low Power Shutdown  
signalswithawidecommonmoderangefordriving12-bit  
to 16-bit single supply, differential input ADCs.  
A3GHzgain-bandwidthproductresultsin70dBlinearityfor  
50MHzinputsignals.TheLTC6406isunity-gainstableand  
the closed-loop bandwidth extends from DC to 800MHz.  
The output voltage swing extends from near ground to  
2V, to be compatible with a wide range of ADC converter  
input requirements. The LTC6406 draws only 18mA, and  
has a hardware shutdown feature which reduces current  
consumption to 300μA.  
V
Available in 8-Lead MSOP and Tiny 16-Lead  
3mm × 3mm × 0.75mm QFN Packages  
APPLICATIONS  
n
Differential Input ADC Driver  
TheLTC6406isavailableinacompact3mm× 3mm16-pin  
leadless QFN package as well as an 8-lead MSOP package,  
and operates over a –40°C to 85°C temperature range.  
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Single-Ended to Differential Conversion  
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Level-Shifting Ground-Referenced Signals  
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Level-Shifting V -Referenced Signals  
CC  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
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High Linearity Direct Conversion Receivers  
TYPICAL APPLICATION  
ADC Driver: Single-Ended Input to Differential Output with  
Common Mode Level Shifting  
Harmonic Distortion vs Frequency  
–30  
1.8pF  
V
V
R
V
= 3V  
S
= V  
= 1.25V  
ICM  
OCM  
LOAD  
OUTDIFF  
–40  
–50  
= 800Ω  
= 2V  
V
IN  
150Ω  
150Ω  
3V  
P-P  
DIFFERENTIAL INPUTS  
3V  
–60  
2ND, R = R = 150Ω  
I
F
V
DD  
2ND, R = R = 500Ω  
I
F
–70  
+INA  
LTC22xx ADC  
–INA  
– +  
LTC6406  
3RD, R = R = 150Ω  
I
F
V
OCM  
3RD, R = R = 500Ω  
I
F
–80  
1.25V  
+ –  
–90  
GND  
–100  
–110  
150Ω  
150Ω  
1.8pF  
1
10  
FREQUENCY (MHz)  
100  
6406 TA01  
6406 TA01b  
6406fc  
1

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