PT2256 datasheet(4/21 Pages) PTC

4 / 21 page

Tel:886-2-66296288

Fax:886-2-29174598

URL:http://www.princeton.com.tw

PT2256 V1.7

- 4 -

August, 2006

Electronic Volume Controller IC

PT2256

PIN DESCRIPTION

Pin Number

I/O

Description

Pin No.

VSS

Negative power supply

OUT1

Volume output pin 1

IN1

Volume input pin 1

LT1

Tap output pin 1 for loudness function

AGND

Analog ground pins 1

5, 12

Volume up control input pin.

The 1 step/1 push volume is controlled by pressing the

up Key. If the key has been pushed continuously

increase. Built-in pull-up resistor.

Volume down control input pin.

The 1 step/1 push volume is controlled by pressing the

down Key. If the key is continuously pressed, the

volume control will continuously decrease. Built-in

pull-up resistor.

OSC

I/O

Oscillation pin.

The oscillation circuit of a resistor and capacitor

connection. Oscillator is activated when the key is

pressed.

RST

Reset pin.

This pin sets the initial volume level. The volume level is

set to -46dB by “L” Input. Built-in pull-up resistor low

active

/INH

Backup mode input pin

DCO

DC output pin for volume level meter

LT2

Tap output pin 2 for loudness function

IN2

Volume input pin 2

OUT2

Volume output pin 2

VDD

Positive power supply

PT2256 Datasheet(PDF) 4 Page - Princeton Technology Corp

PT2256 Datasheet(HTML) 4 Page - Princeton Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Datasheet Download

Link URL