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GS3441-INE3 数据表(PDF) 5 Page - Semtech Corporation

部件名 GS3441-INE3
功能描述  Extended Reach 3G/HD/SD Adaptive Cable Equalizer with Dual Outputs
Download  25 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

GS3441-INE3 数据表(HTML) 5 Page - Semtech Corporation

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GS3441 Extended Reach 3G/HD/SD Adaptive Cable
Equalizer with Dual Outputs
Final Data Sheet
Rev. 1
GENDOC-056647
May 2013
5 of 25
Proprietary & Confidential
www.semtech.com
6, 7
AGC, AGC
Analog
External AGC capacitor connection.
8BYPASS
Not
Synchronous
Input
Core Bypass Control.
Please refer to the input logic parameter in the DC Electrical
Characteristics table for logic level threshold and compatibility. This
pin is a 2.5V input that is tolerant to 3.3V levels.
Forces the equalizer and DC-restore stages into Bypass mode when
HIGH. No equalization occurs in this mode.
This pin has an internal pull-down resistor.
9
SQ_ADJ
Analog
Input
Squelch Threshold Adjust.
Adjusts the input signal amplitude threshold of the carrier detect
function. The serial data output of the device can be muted when
the serial data input signal amplitude is too low by connecting the
CD and OPn_CTL pins via suitable resistor networks (see Figure 4-2
and Figure 4-3).
This pin has an internal pull-down resistor.
Note: The SQ_ADJ function is only available when the device is not
in auto-sleep mode. Reference Section 4.5 for more detail.
10
OP2_EN
Input
Output 2 Enable.
Please refer to the input logic parameter in the DC Electrical
Characteristics table for logic level threshold and compatibility.
When HIGH, Output 2 is operational.
When LOW, Output 2 is powered-down and the outputs are both at
VCC_O2.
This pin has an internal pull-down resistor.
11
OP2_CTL
Not
Synchronous
Input
Controls the Output Swing, De-emphasis and Mute features of the
DDO/DDO outputs for Output 2.
When this pin is connected to GND, the output swing is 850mVppd
with no de-emphasis.
With this pin connected to a 2.5V, the output is muted.
Intermediate voltages and functions are shown in Table 4-5. These
voltages can be achieved as shown in Figure 4-2 and Figure 4-3.
This pin has an internal pull-down resistor.
12
VCC_O2
Analog
Power
Most positive power supply connection for the output buffer for
output 2.
Connect to 1.2 - 3.3V DC.
13, 14
DDO2,
DDO2
Analog
Output
Serial digital differential output 2.
15
VEE_O2
Analog
Power
Most negative power supply connection for the output buffer for
output 2.
Connect to GND.
16
VEE_O1
Analog
Power
Most negative power supply connection for the output buffer for
output 1.
Connect to GND.
17, 18
DDO1,
DDO1
Analog
Output
Serial digital differential output 1.
Table 1-1: GS3441 Pin Descriptions (Continued)
Pin Number
Name
Timing
Type
Description


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