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www.pericom.com

07/08/15

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Block Diagram

Description

The VGA connector does not have a hot-plug pin to tell the sys-

tem that a monitor is connected. More recent video standards,

such as HDMI and DisplayPort, save power by adding a hot-plug

pin which allows graphics outputs to be powered down when a

monitor is not connected.

Pericom’s PI3VST01 HPD signal generator generates a monitor

detection signal from a VGA source connector to tell the VGA

source if an external monitor is connected or not.

PI3VST01 allows notebook makers to shut off the VGA DAC

when a monitor is not connected, thus saving 170 mW per DAC.

PI3VST01 dissipates only 0.66 mW.

The monitor detection scheme within the PI3VST01 will not

affect normal operation of the video driver.

Features

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Hot Plug Detect Signal Generator for VGA connectors

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Generates hot plug output signal telling system when

monitor is present or not

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Power Supply, 3.3V and 5.0V

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ESD tolerance on pin 7 is up to +/-4kV contact per

IEC61000-4-2 specification

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-3dB BW of 1.7GHz (typ)

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4.75 Ohm On Resistance with 0.5 Ohm flatness (typ)

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Low input/output capacitance (Con = 4.5pF, typ)

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Packaging (Pb-free and Green):

à

8-contact MSOP (U)

PI3VST01

HPD signal Generator for VGA

Logic

Control

Detector

HPD_OUT

BOUT

BIN

VSYNC

GND

BIN

VSYNC

HPD_OUT

BOUT

Rref

DD5

V

DD3

V

Pin Configuration-U8 (Top View)

15-0090