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LTC6409

更新时间： 2024-11-21 11:41:35
品牌 Logo 应用领域
凌特 - Linear 驱动器放大器
页数 文件大小 规格书
24页 433K
描述
10GHz GBW, 1.1nV/Hz Differential Amplifier/ADC Driver

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中文翻译

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LTC6409 数据手册

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LTC6409  
10GHz GBW, 1.1nV/√Hz  
Differential Amplifier/ADC  
Driver  
FeaTures  
DescripTion  
The LTC®6409 is a very high speed, low distortion, dif-  
ferential amplifier. Its input common mode range includes  
ground, so that a ground-referenced input signal can be  
DC-coupled, level-shifted, and converted to drive an ADC  
differentially.  
n
10GHz Gain-Bandwidth Product  
n
88dB SFDR at 100MHz, 2V  
P-P  
n
1.1nV/√Hz Input Noise Density  
Input Range Includes Ground  
n
n
External Resistors Set Gain (Min 1V/V)  
n
3300V/µs Differential Slew Rate  
The gain and feedback resistors are external, so that the  
exact gain and frequency response can be tailored to each  
application. For example, the amplifier could be externally  
compensated in a no-overshoot configuration, which is  
desired in certain time-domain applications.  
n
52mA Supply Current  
n
2.7V to 5.25V Supply Voltage Range  
n
Fully Differential Input and Output  
n
Adjustable Output Common Mode Voltage  
n
Low Power Shutdown  
n
The LTC6409 is stable in a differential gain of 1. This al-  
lows for a low output noise in applications where gain is  
not desired. It draws 52mA of supply current and has a  
hardware shutdown feature which reduces current con-  
sumption to 100µA.  
Small 10-Lead 3mm × 2mm × 0.75mm QFN Package  
applicaTions  
n
Differential Pipeline ADC Driver  
n
High-Speed Data-Acquisition Cards  
TheLTC6409isavailableinacompact3mm× 2mm10-pin  
leadless QFN package and operates over a –40°C to 125°C  
temperature range.  
n
Automated Test Equipment  
n
Time Domain Reflexometry  
n
Communications Receivers  
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.  
Typical applicaTion  
DC-Coupled Interface from a Ground-Referenced Single-Ended  
Input to an LTC2262-14 ADC  
LTC6409 Driving LTC2262-14 ADC,  
fIN = 70MHz, –1dBFS,  
1.3pF  
fS = 150MHz, 4096-Point FFT  
0
–10  
V
V
= 3.3V  
OUTDIFF  
S
V
IN  
= 1.8V  
P-P  
150Ω  
150Ω  
3.3V  
HD2 = –86.5dBc  
HD3 = –89.4dBc  
SFDR = 81.6dB  
SNR = 71.1dB  
–20  
1.8V  
–30  
39pF  
10Ω  
–40  
V
DD  
33.2Ω  
33.2Ω  
+
A
A
– +  
LTC6409  
IN  
–50  
–60  
V
= 0.9V  
150Ω  
LTC2262-14 ADC  
–
OCM  
10Ω  
39pF  
–70  
+ –  
IN  
GND  
–80  
–90  
–100  
–110  
–120  
150Ω  
1.3pF  
6409 TA01  
0
10  
20  
30  
40  
50  
60  
70  
FREQUENCY (MHz)  
6409 TA01b  
6409fa  
1
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