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參數(shù)資料
| 型號： | YAC526-EZ |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封裝： | LEAD FREE, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 1333K |
| 代理商： | YAC526-EZ |
YAC526
4
■
Description of functions
●
Analog functions
·
Maximum input voltage
The maximum amplitude of the input signal that is inputted to the analog input pin of YAC526 is 4.2Vrms when power supply
voltage is ±6V.
For a system to which a signal exceeding the power supply voltage (AVDD/AVSS) may be applied, use external diodes to
suppress the signal to the maximum rating or less.
·
Maximum output voltage
The maximum output voltage(THD<1%) of the signal that is outputted from the analog output pin of YAC526 is 4.2Vrms
when power supply voltage is ±6V and no load is connected. The output impedance is 100 (typ.)
●
Realization of low residual noise system
General audio amplifiers are designed to have input sensitivity of approximately 150mV, and have a gain of approximately
16dB at the preamplifier (PreAMP) section and approximately 30dB at the main amplifier section (MainAMP).
The residual noise of YAC526 (Gain=MUTE) is 1.2Vrms (typ.) which is very small, and the device has positive side gain
(max: 31.5dB).
Therefore, by using YAC526 also as ”PreAMP”, systems with a very small residual noise and amplification of volume control
noise can be configured.
For conventional configurations that need a ”PreAMP”, even if the residual noise of the volume control itself is zero, the noise
that is produced at the ”PreAMP” is amplified by the gain, the noise becomes very high when it is heard at the speakers.
When the input converted noise of ”PreAMP” is 1V, the conventional configuration produces noise of approximately 200V
at the speakers. For the configuration that uses YAC526, the noise is 38V which is very small.
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