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MAX3509EUP

更新时间: 2024-10-31 22:55:23
品牌 Logo 应用领域
美信 - MAXIM 放大器有线电视
页数 文件大小 规格书
12页 217K
描述
Upstream CATV Amplifier

MAX3509EUP 数据手册

 浏览型号MAX3509EUP的Datasheet PDF文件第2页浏览型号MAX3509EUP的Datasheet PDF文件第3页浏览型号MAX3509EUP的Datasheet PDF文件第4页浏览型号MAX3509EUP的Datasheet PDF文件第5页浏览型号MAX3509EUP的Datasheet PDF文件第6页浏览型号MAX3509EUP的Datasheet PDF文件第7页 
19-1700; Rev 0; 4/00  
Upstream CATV Amplifier  
General Description  
Features  
The MAX3509 is a programmable power amplifier for  
use in CATV upstream applications. The device outputs  
up to 66dBmV QPSK through a 1:1 transformer. It fea-  
tures variable gain controlled by a 3-wire digital serial  
bus. Gain control is available in 1dB steps. The device  
operates over a 5MHz to 65MHz frequency range.  
Ultra-Low Power-Up/Down Transients,  
25mV (typ) at 66dBmV Output  
Single-Supply Operation  
Output Level Ranges from <12dBmV to 67dBmV  
(QPSK)  
The MAX3509 offers a transmit-disable mode, which  
places the device in a high-isolation state for use  
between bursts in TDMA systems. In this mode, all ana-  
log functions are shut down, minimizing output noise  
and power consumption. When entering and leaving  
transmit-disable mode, transients are kept to 25mV  
nominal at full gain. In addition, supply current is re-  
duced to 7.8mA.  
Gain Programmable in 1dB Steps  
Low Transmit Output Noise Floor: -41dBmV  
(160kHz BW)  
Low Transmit-Disable Output Noise: -70dBmV  
Shutdown Mode  
An additional power-down mode is available. Shutdown  
mode disables all circuitry and reduces current con-  
sumption to less than 1µA.  
Ordering Information  
PART  
TEMP. RANGE  
PIN-PACKAGE  
The MAX3509 is available in a 20-pin TSSOP-EP pack-  
age for the extended-industrial temperature range  
(-40°C to +85°C).  
MAX3509EUP  
-40°C to +85°C  
20 TSSOP-EP*  
*Exposed paddle  
Applications  
CATV Status Monitor  
Telephony over Cable  
OPENCATV Set-Top Box CATV Infrastructure  
Cable Modems  
Typical Operating Circuit  
Pin Configuration  
TOP VIEW  
3
4
17  
V
+9V  
0.1µF  
CC2  
+9V  
0.1µF  
V
CC1  
TXEN  
1
2
3
4
5
6
7
8
9
20 SCLK  
19 SDA  
18 CS  
GND1  
SHDN  
MAX3509  
4700pF  
16  
V
CC1  
1000pF  
1000pF  
OUT  
5
6
OUT+  
OUT-  
IN+  
IN-  
GND1  
IN+  
17 V  
CC2  
T1  
1:1  
IN  
4700pF  
MAX3509  
16 OUT+  
15 OUT-  
15  
IN-  
14  
GND1  
14  
V
V
+9V  
0.1µF  
CC2  
CC2  
8
7
V
+9V  
0.1µF  
CC1  
V
13 GND  
12 GND  
11 GND  
CC1  
GND1  
GND  
GND2  
*
9
2
1
20  
19  
18  
GND 10  
GND  
GND  
GND  
GND  
GND  
SHDN  
TXEN  
SCLK  
SDA  
CS  
10  
11  
12  
13  
EXPOSED PADDLE  
LOGIC  
INPUTS  
TSSOP-EP  
*EXPOSED PADDLE  
Covered by U.S. Patent numbers 5,748,027 and 5,994,955.  
________________________________________________________________ Maxim Integrated Products  
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  

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