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LTC6400IUD-14 PDF预览

LTC6400IUD-14

更新时间: 2024-11-13 12:05:03
品牌 Logo 应用领域
凌特 - Linear 驱动器
页数 文件大小 规格书
16页 213K
描述
2.4GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF

LTC6400IUD-14 数据手册

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LTC6400-14  
2.4GHz Low Noise, Low  
Distortion Differential ADC  
Driver for 300MHz IF  
FEATURES  
DESCRIPTION  
The LTC®6400-14 is a high-speed differential amplifier  
targeted at processing signals from DC to 300MHz. The  
part has been specifically designed to drive 12-, 14- and  
16-bitADCswithlownoiseandlowdistortion,butcanalso  
be used as a general-purpose broadband gain block.  
n
2.4GHz –3dB Bandwidth  
n
Fixed Gain of 5V/V (14dB)  
n
–97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)  
n
–66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)  
n
1.1nV/√Hz Internal Op Amp Noise  
n
2.5nV/√Hz Total Input Noise  
The LTC6400-14 is easy to use, with minimal support  
circuitry required. The output common mode voltage is  
set using an external pin, independent of the inputs, which  
eliminates the need for transformers or AC-coupling ca-  
pacitors in many applications. The gain is internally fixed  
at 14dB (5V/V).  
n
7.5dB Noise Figure  
n
Differential Inputs and Outputs  
n
200Ω Input Impedance  
n
2.85V to 3.5V Supply Voltage  
n
85mA Supply Current (255mW)  
n
1V to 1.6V Output Common Mode Voltage,  
The LTC6400-14 saves space and power compared to  
alternativesolutionsusingIFgainblocksandtransformers.  
The LTC6400-14 is packaged in a compact 16-lead 3mm ×  
3mm QFN package and operates over the 40°C to 85°C  
temperature range.  
Adjustable  
DC- or AC-Coupled Operation  
Max Differential Output Swing 4.8V  
n
n
P-P  
n
Small 16-Lead 3mm × 3mm × 0.75mm QFN Package  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
APPLICATIONS  
n
Differential ADC Driver  
n
Differential Driver/Receiver  
n
Single Ended to Differential Conversion  
IF Sampling Receivers  
n
n
SAW Filter Interfacing  
TYPICAL APPLICATION  
Equivalent Output IP3 vs  
Single-Ended to Differential ADC Driver  
Frequency  
70  
(NOTE 7)  
3.3V  
3.3V  
60  
50  
40  
30  
20  
10  
0
C2  
C1  
C
F2  
0.1μF  
1000pF  
33pF  
+
V
C3  
R
R
S3  
S1  
0.1μF  
15Ω  
10Ω  
V
+
DD  
+OUT  
AIN  
V
+IN  
IN  
R1  
68.5Ω  
L1  
24nH  
C
C4  
0.1μF  
F1  
LTC6400-14  
–OUT  
LTC2208  
R
15Ω  
R
S4  
33pF  
S2  
10Ω  
–IN  
AIN  
V
V
CM  
OCM  
R2  
29Ω  
C
F3  
33pF  
COILCRAFT  
0603CS  
LTC2208  
130Msps  
V
0
50  
100  
150  
200  
250  
300  
1.25V  
16-Bit ADC  
FREQUENCY (MHz)  
64014 TA01a  
640020 TA01b  
C5  
0.1μF  
R3  
100Ω  
640014fb  
1

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