GS3440 datasheet(4/23 Pages) SEMTECH

Part #	GS3440

Description	Extended Reach 3G/HD/SD Adaptive Cable Equalizer

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Manufacturer	SEMTECH [Semtech Corporation]

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GS3440 Adaptive Cable Equalizer

Final Data Sheet

Rev. 2

December 2012

4 of 23

Proprietary and Confidential

1. Pin Out

1.1 GS3440 Pin Assignment

Figure 1-1: GS3440 Pin Out

1.2 GS3440 Pin Descriptions

Ground Pad

(bottom of package)

GS3440

16-pin QFN

(top view)

56

7

8

16

15

14

13

GAIN_SEL

VEE_A

SDI

1

2

3

4

SDI

VEE_O

DDO

OP_CTL

12

11

10

9

Table 1-1: GS3440 Pin Descriptions

Pin Number

Name

Timing

Type

Description

1

VEE_A

Analog

Power

Most negative power supply connection for the input buffer, core

and control circuits.

Connect to GND.

2, 3

SDI, SDI

Analog

Input

Serial digital differential input.

4

GAIN_SEL

Not

Synchronous

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.

5, 6

AGC, AGC

Analog

–

External AGC capacitor connection.

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