数字音量控制前级实做，顶级MAS6116芯片，最高端OLED显示。

audiohiend · 发表于 2018-1-3 20:47

雅俊主板电源部分有特色，场馆恒流源，正负电源稳定性非常好。 9116 的控制电路很不同于厂家维修手册的标准电路，外加多重隔离措施，所以信噪比也很高，再用上高一级的6116，就更上一层楼了。

audiohiend · 发表于 2018-1-3 20:48

我做过金嗓子，电源电路比起来还没有雅俊高级。

audiohiend · 发表于 2018-1-4 21:25

本帖最后由 audiohiend 于 2018-1-4 21:26 编辑

mas6116 参数：MAS6116
Stereo Digital Volume Control
• Signal Voltage up to ± 18V
• Two Independent Channels
• Use of Differential DACs Possible
• Serial Control Registers
DESCRIPTION
MAS6116 is a stereo volume control for audio
systems, which require high output voltages (AC3).
It has serial interface, which controls two audio
channels. Simple serial interface allows
microcontroller to control many MAS6116 chips on
the same PCB board. “Clicking” between gain
changes is eliminated by changing gain only when
zero crossing has been detected in the input signal.
MAS6116 also features a peak detection circuitry
that allows easy monitoring of the output signal.
MAS6116 has also a set of “instant gain change”
instructions that allow fast gain switching. The use
of external operational amplifier provides flexibility
for the operating voltage, signal swing, noise floor
and cost optimization.
FEATURES APPLICATION
• Signal Voltage up to ± 18V
• Two Independent Channels
• Use of Differential DACs Possible
• Serial Control Registers
• Zero Cross Detection for Gain Changes
• Gain Range +15.5db…-111.5dB
• 0.5 dB Gain Step Size
• Mute Pin
• Power On/Off Transient Suppression
• Signal Peak Level Comparator with Adjustable
Reference
• Independent Writing to Both Channels
• Instant Gain Change Function for Fast Gain
Switching
• XMUTE Using the Zero Cross and Timeout
Functions
• Write Operation Status Register
• High End Audio Systems
• Multi-channel Audio Systems