PT2325
6 Channel Volume Control
DESCRIPTION
The volume controller is a basic function in an audio
system, in a modern multi-channel system always
needs a main volume that can adjust volume of all
channels in synchronously. In traditional multi-channel
design mostly utilizing a multi-gang potentiometer, but
it’s so expensive and not easy to achieved well volume
attenuation matching between each channel.
Now a better solution is uses the PT2325 to replace the
multi-gang potentiometer. The PT2325 is designed for
multi-channel audio purpose, the chip has 6 groups
built-in 48 steps volume attenuator for each channel
and running in synchronous, it only needs an external
DC voltage to setting volume attenuation. In general
application, a cheap single-gang potentiometer is work
well to control whole channel’s volume. The DC volume
setting also can be controlled by a PWM signal from the
MCU and support 3.3V MCU bus voltage.
The performance of the PT2325 is excellent for the high
cost/performance multi-channel audio system, its wide
attenuation range (down to -100dB), high channel
separation characteristics is also suite for other high
quality audio purpose.
FEATURES
•
6 channels, volume control range 0 ~ -100dB/per
channel
•
Operating voltage range:
- Volume buffer : 5 ~ 10V
- Volume controller: 3.3 ~ 10V
•
Low noise, High SNR: Greater than 100dB
(A-Weighted)
•
High channel separation > 100dB
•
Built-in MUTE function
•
DC controlled volume attenuation
APPLICATIONS
•
•
•
•
AV surround system
Mini combo
PC multimedia speaker
Other audio applications
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
