MAS9116 Datasheet, PDF (1/18 Pages) Micro Analog systems – Stereo Digital Volume Control

DA9116.005
22 November, 2005
MAS9116
Stereo Digital Volume Control
• Signal Voltage up to ± 18V
• Two Independent Channels
• Use of Differential DACs Possible
• Serial Control Registers
DESCRIPTION
MAS9116 is a stereo volume control for audio
systems, which require high output voltages (AC3).
It has a 16-bit serial interface, which controls two
audio channels. Simple serial interface allows
microcontroller to control many MAS9116 chips on
FEATURES
• Zero Detection for Gain Changes
• Gain Range +15.5db…-111.5dB
• 0.5 dB Step Size
• Mute Pin and Register
• Power On/Off Transient Suppression
• Signal Peak Level Comparator with Adjustable
Reference
BLOCK DIAGRAM
the same PCB board. “Clicking” between gain
changes is eliminated by changing gain only when
zero crossing has been detected from the signal.
The use of external operational amplifier provides
flexibility for the operating voltage, signal swing,
noise floor and cost optimization.
APPLICATION
• High End Audio Systems
• Multichannel Audio Systems
RIN
RFO
R2
R1
RMO
R3
VIN
RGND
DATA
CCLK
XCS
XMUTE
LIN
VIN
ZERO
CROSSING
CONTROL
ZERO
CROSSING
R2
R3
PEAK
DETECTOR
8
DAC
PEAK
DETECTOR
R1
LFO
LMO
LGND
AGND
AVCC
DVCC
DGND
MAS9116
VOUT
VOUT
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