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PT2256VL Datasheet(PDF) 3 Page - Princeton Technology Corp

Part # PT2256VL
Description  Electronic Volume Controller IC
PDF  19 Pages
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT2256VL Datasheet(HTML) 3 Page - Princeton Technology Corp

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Tel:886-2-66296288
Fax:886-2-29174598
URL:http://www.princeton.com.tw
PT2256V V1.2
- 3 -
August, 2006
Electronic Volume Controller IC
PT2256V
PIN CONFIGURATION
VSS
OUT1
IN1
LT1
AGND
/UP
/DN
OSC
VDD
OUT2
IN2
LT2
AGND
DCO
/INH
/RST
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
PT2256V
PIN DESCRIPTION
Pin Number
I/O
Description
Pin No.
VSS
-
Negative Power Supply
1
OUT1
O
Volume Output Pin 1
2
IN1
I
Volume Input Pin 1
3
LT1
O
Tap Output Pin 1 for Loudness Function
4
AGND
-
Analog Ground Pins 1
5, 12
UP
I
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.
6
DN
I
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.
7
OSC
I/O
Oscillation Pin.
The oscillation circuit of a resistor and capacitor connection.
Oscillator is activated when the key is pressed.
8
RST
I
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
9
/INH
I
Backup Mode Input Pin
10
DCO
O
DC Output Pin for Volume Level Meter
11
LT2
O
Tap Output Pin 2 for Loudness Function
13
IN2
I
Volume Input Pin 2
14
OUT2
O
Volume Output Pin 2
15
VDD
-
Positive Power Supply
16



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