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LT6604IUFF-5-PBF PDF预览

LT6604IUFF-5-PBF

更新时间: 2024-11-11 05:43:39
品牌 Logo 应用领域
凌特 - Linear 放大器功率放大器
页数 文件大小 规格书
16页 181K
描述
Dual Very Low Noise, Differential Amplifi er and 5MHz Lowpass Filter

LT6604IUFF-5-PBF 数据手册

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LT6604-5  
Dual Very Low Noise,  
Differential Amplifier and  
5MHz Lowpass Filter  
DESCRIPTION  
The LT®6604-5 consists of two matched, fully differential  
amplifiers, each with a 4th order, 5MHz lowpass filter. The  
fixed frequency lowpass filter approximates a Chebyshev  
response. By integrating a filter and a differential ampli-  
fier, distortion and noise are made exceptionally low. At  
unity gain, the measured in-band signal-to-noise ratio is  
an impressive 82dB. At higher gains, the input referred  
noise decreases, allowing the part to process smaller  
input differential signals without significantly degrading  
the signal-to-noise ratio.  
FEATURES  
n
Dual Differential Amplifier with 5MHz Lowpass Filters  
4th Order Filters  
Approximates Chebyshev Response  
Guaranteed Phase and Gain Matching  
Resistor-Programmable Differential Gain  
n
>82dB Signal-to-Noise (3V Supply, 2V Output)  
P-P  
n
Low Distortion (1MHz, 2V Output, 800Ω Load)  
P-P  
HD2: 93dBc  
HD3: 96dBc  
n
Specified for Operation with 3V, 5V and 5V Supplies  
n
Fully Differential Inputs and Outputs  
Gain and phase are well matched between the two chan-  
nels. Gain for each channel is independently programmed  
using two external resistors. The LT6604-5 enables level  
shifting by providing an adjustable output common mode  
voltage, making it ideal for directly interfacing to ADCs.  
The LT6604-5 is fully specified for 3V operation. The dif-  
ferential design enables outstanding performance at a  
n
Adjustable Output Common Mode Voltage  
n
Small 4mm × 7mm × 0.75mm QFN Package  
APPLICATIONS  
n
Dual Differential ADC Driver and Filter  
n
Single-Ended to Differential Converter  
2V signal level for a single 3V supply.  
P-P  
n
Matched, Dual, Differential Gain or Filter Stage  
n
See the back page of this datasheet for a complete list of  
relatedsingleanddualdifferentialamplifierswithintegrated  
2.5MHz to 20MHz lowpass filters.  
Common Mode Translation of Differential Signals  
n
High Speed ADC Antialiasing and DAC Smoothing in  
Wireless Infrastructure or Networking Applications  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners.  
High Speed Test and Measurement Equipment  
n
Medical Imaging  
TYPICAL APPLICATION  
Channel to Channel Gain Matching  
3V  
25  
50 TYPICAL UNITS  
LT6604-5  
+INA  
LTC22xx  
DUAL ADC  
+
T
= 25°C  
A
V A  
3V  
3V  
GAIN = 1  
806Ω  
20  
15  
10  
5
50Ω  
50Ω  
f
= 5MHz  
+
–OUTA  
+OUTA  
IN  
V
+
AIN  
+
MIDA  
18pF  
18pF  
V
DOUT  
OCMA  
0.01μF  
–INA  
+
+
806Ω  
806Ω  
+
V B  
+INB  
V
50Ω  
–OUTB  
+OUTB  
+
AIN  
MIDB  
V
DOUT  
OCMB  
50Ω  
0.01μF  
+
–INB  
+
0
806Ω  
–0.20  
–0.10  
0
0.10  
0.20  
V
66045 TA01  
GAIN MATCH (dB)  
66045 TA01b  
66045f  
1

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