GS3440 Datasheet, PDF (4/23 Pages) Semtech Corporation – Extended Reach 3G/HD/SD Adaptive Cable Equalizer

1. Pin Out
1.1 GS3440 Pin Assignment
VEE_A
SDI
SDI
GAIN_SEL
16 15 14 13
1
12
2
GS3440
11
16-pin QFN
3
(top view)
10
4
9
5
6
7
8
VEE_O
DDO
DDO
OP_CTL
Ground Pad
(bottom of package)
Figure 1-1: GS3440 Pin Out
1.2 GS3440 Pin Descriptions
Table 1-1: GS3440 Pin Descriptions
Pin Number
Name
Timing
1
VEE_A
Analog
2, 3
SDI, SDI
Analog
4
GAIN_SEL
Not
Synchronous
5, 6
AGC, AGC
Analog
Type
Power
Input
Input
–
Description
Most negative power supply connection for the input buffer, core
and control circuits.
Connect to GND.
Serial digital differential input.
Input Sensitivity 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 device compensates for an additional 6dB of loss
across the entire operating band.
This pin has an internal pull-down resistor.
External AGC capacitor connection.
GS3440 Adaptive Cable Equalizer
Final Data Sheet
Rev. 2
December 2012
4 of 23
Proprietary and Confidential