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Fax: 886-2-29174598
URL: http://www.princeton.com.tw
6 Channel Volume Control
PT2325
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鈥檚 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鈥檚 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
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6 channels, volume control range 0 ~ -100dB/per channel
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Operating voltage range: 5 ~ 10V (Volume Buffer)
3.3 ~ 10V (Volume Controller)
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Low noise, High SNR: Greater than 100dB (A-Weighted)
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High channel separation > 100dB
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Built-in MUTE function
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DC controlled volume attenuation
APPLICATIONS
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AV surround system
Car audio
Mini combo
PC multimedia speaker
Other audio applications
PT2325 V1.1
-1-
August, 2007
PT2325-DL相關(guān)型號(hào)PDF文件下載
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