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GS3441 bảng dữ liệu(PDF) 6 Page - Semtech Corporation |
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GS3441 bảng dữ liệu(HTML) 6 Page - Semtech Corporation |
6 / 25 page 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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