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LMH6522SQE PDF预览

LMH6522SQE

更新时间： 2024-11-21 02:58:47
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德州仪器 - TI 电信电信集成电路
页数 文件大小 规格书
34页 1426K
描述
High Performance Quad DVGA

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LMH6522SQE 数据手册

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LMH6522  
www.ti.com  
SNOSB53D –JULY 2011–REVISED MARCH 2013  
LMH6522 High Performance Quad DVGA  
Check for Samples: LMH6522  
Each channel of LMH6522 has an independent,  
1
FEATURES  
digitally controlled attenuator and a high linearity,  
differential output, amplifier. All circuitry has been  
optimized for low distortion and maximum system  
design flexibility. Power consumption is managed by  
a three-state enable pin. Individual channels can be  
disabled or placed into a Low Power Mode or a  
higher performance, High Power Mode.  
23  
•
OIP3: 49dBm @ 200MHz  
Noise Figure: 8.5dB  
•
•
•
•
•
•
•
•
Voltage Gain: 26dB  
1dB Gain Steps  
−3dB Bandwidth of 1400 MHz  
Gain Step Accuracy: 0.2 dB  
Disable Function for Each Channel  
Parallel and Serial Gain Control  
The LMH6522 digitally controlled attenuator provides  
precise 1dB gain steps over a 31dB range. The digital  
attenuator can be controlled by either a SPI™ Serial  
bus or a high speed parallel bus.  
Low Power Mode for Power Management  
Flexibility  
The output amplifier has a differential output, allowing  
large signal swings on a single 5V supply. The low  
impedance output provides maximum flexibility when  
driving a wide range filter designs or analog to digital  
converters. For applications which have very large  
changes in signal level LMH6522 can support up to  
62dB of gain range by cascading channels.  
•
Small Footprint WQFN Package  
APPLICATIONS  
•
•
Cellular Base Stations  
Wideband and Narrowband IF Sampling  
Receivers  
The LMH6522 operates over the industrial  
temperature range of −40°C to +85°C. The LMH6522  
is available in a 54-Pin, thermally enhanced, WQFN  
package.  
•
•
Wideband Direct Conversion  
ADC Driver  
DESCRIPTION  
Performance Curve  
The LMH6522 contains four, high performance,  
digitally controlled variable gain amplifiers (DVGA). It  
has been designed for use in narrowband and  
broadband IF sampling applications. Typically, the  
LMH6522 drives a high performance ADC in a broad  
range of mixed signal and digital communication  
applications such as mobile radio and cellular base  
stations where automatic gain control (AGC) is  
required to increase system dynamic range.  
60  
50  
40  
30  
20  
10  
0
35  
30  
25  
20  
15  
10  
5
f = 200 MHz  
V
= 2V  
OUT PPD  
@ filter input  
50  
100  
150  
200  
250  
300  
FILTER INPUT RESISTANCE (ꢀ)  
Figure 1. OIP3 vs Filter Input Resistance  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
SPI is a trademark of Motorola, Inc..  
2
3
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011–2013, Texas Instruments Incorporated  
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