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GS3441 数据表(PDF) 6 Page - Semtech Corporation

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

GS3441 数据表(HTML) 6 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
6 of 25
Proprietary & Confidential
www.semtech.com
19
VCC_O1
Analog
Power
Most positive power supply connection for the output buffer for
output 1.
Connect to 1.2 - 3.3V DC.
20
OP1_CTL
Not
Synchronous
Input
Controls the Output Swing, De-emphasis and Mute features of the
DDO/DDO outputs for Output 1.
When this pin is connected to GND, the output swing is 800mVppd
with no de-emphasis applied to the output signal.
With this pin connected to the 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.
21
OP1_EN
Input
Output 1 Enable.
Please refer to the input logic parameter in the DC Electrical
Characteristics table for logic level threshold and compatibility.
When HIGH, Output 1 is operational.
When LOW, Output 1 is powered-down and the outputs are both at
VCC_O1.
This pin has an internal pull-up resistor.
22
CLI
Output
Cable Length Indicator
23
SLEEP
Not
Synchronous
Input
SLEEP 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.
When HIGH the part is powered-down except for the Carrier Detect
function.
This pin may be connected directly to the CD pin to automatically
put the device to sleep (low-power operation) on loss of carrier.
This pin has an internal pull-down resistor.
Note: When SLEEP is connected to CD for automatic power
reduction on loss of carrier, the SQ_ADJ pin will not modify the CD
threshold. The CD threshold will revert to the default value used
when SQ_ADJ is pulled LOW.
24
CD
Not
Synchronous
Output
Carrier Detect Status Output.
Please refer to the output logic parameter in the DC Electrical
Characteristics table for logic level threshold and compatibility. This
pin is a 2.5V output.
Indicates presence of an input signal. When the CD pin is LOW, a
signal has been detected at the input. When this pin is HIGH, it
indicates loss of input signal.
Center Pad
—Power
Internally bonded to VEE_A.
Connect to GND with at least 5 VIAs.
Table 1-1: GS3441 Pin Descriptions (Continued)
Pin Number
Name
Timing
Type
Description


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