參數(shù)資料
型號: MAX3510
廠商: Maxim Integrated Products, Inc.
英文描述: 2X2 1.5 Gbps LVDS Crosspoint Switch 16-SOIC -40 to 85
中文描述: CATV上行放大器
文件頁數(shù): 6/12頁
文件大?。?/td> 138K
代理商: MAX3510
M
Upstream CATV Amplifier
6
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Table 1. Reflection Coefficients (75
reference)
FREQUENCY
TRANSMIT MODE
MHz
REAL S11
1
0.937
2
0.937
5
0.936
10
0.932
20
0.932
30
0.932
40
0.927
60
0.922
80
0.913
120
0.889
160
0.850
200
0.753
Pin Description
PIN
1, 3,
7, 11
Ground Pins
GND
FUNCTION
NAME
Programmable-Gain Amplifier (PGA) +5V Supply. Bypass this pin to GND1 with a decoupling capacitor as
close to the part as possible.
V
CC
1
2
PGA RF Ground. As with all ground connections, maintain the shortest possible (low-inductance) length to
the ground plane.
GND1
4
Negative PGA Input. When not used, this port must be AC-coupled to ground. See VIN+.
Serial-Interface Enable. TTL-compatible input. See Serial Interface section.
Serial-Interface Data. TTL-compatible input. See Serial Interface section.
VIN-
CS
SDA
6
8
9
Positive PGA Input. Along with VIN-, this port forms a high-impedance differential input to the PGA. Driving
this port differentially will increase the rejection of second-order distortion at low output levels.
VIN+
5
Serial-Interface Clock. TTL-compatible input. See Serial Interface section.
SCLK
10
No Connection
RF Output Bypass. This pin must be bypassed to ground with a 0.1μF capacitor.
N.C.
CEXT2
13
14
Shutdown. When this pin and TXEN (pin 18) are set low, all functions (including the serial interface) are dis-
abled, leaving only leakage currents to flow.
SHDN
12
Negative Output. Along with VOUT+, this port forms a 300
impedance output. This port is matched to a
75
load using a 2:1 transformer.
Positive Output. See VOUT-.
VOUT-
15
Transmit-Disable (Enable) Timing Capacitor. See Ramp Generator section.
Power-Amplifier Enable. Setting this pin low shuts off the power amplifier.
CEXT1
TXEN
17
18
VOUT+
16
Power Amplifier Bias, +5V Supply. Bypass this pin to GND2 with a decoupling capacitor as close to the part
as possible.
V
CC
2
19
Power Amplifier Bias Ground. As with all ground connections, maintain the shortest possible (low induc-
tance) length to the ground plane.
GND2
20
TRANSMIT MODE
REAL S22
-0.494
-0.054
0.196
0.183
0.143
0.108
0.059
-0.060
-0.197
-0.420
-0.442
-0.212
TRANSMIT DISABLE MODE
REAL S22
-0.509
-0.075
0.219
0.244
0.219
0.194
0.158
0.066
-0.049
-0.281
-0.409
-0.327
IMAG S11
-0.006
-0.007
-0.005
-0.011
-0.018
-0.026
-0.033
-0.054
-0.075
-0.145
-0.249
-0.408
IMAG S22
0.625
0.550
0.199
0.017
-0.081
-0.149
-0.199
-0.257
-0.252
-0.070
0.256
0.543
IMAG S22
0.623
0.577
0.257
0.062
-0.052
-0.121
-0.175
-0.252
-0.284
-0.207
0.037
0.345
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