SM6451AVNIPPON Datasheet, PDF (1/12 Pages) Nippon Precision Circuits Inc – Audio Variable Volume IC

NIPPON PRECISION CIRCUITS INC.
SM6451AV
Audio Variable Volume IC
OVERVIEW
The SM6451AV is a 3-wire serial-controlled elec-
tronic variable volume IC for audio applications. It
provides electronic volume control for a stereo sys-
tem (left and right channels), and independent chan-
nel attenuation and muting, with greatly enhanced
digital zip noise suppression. The chip address func-
tion allows up to four SM6451AV devices to be con-
nected and individually controlled over the 3-wire
control interface from a single CPU. It is available in
16-pin VSOP packages.
FEATURES
s Stereo inputs and outputs
s Attenuation function
• 2-channel independent control
• 1.0 dB/step over 80 steps
• 0 to −80 dB range
s Mute function
s 3-wire serial data control (MDT, MCK, MLEN)
s Chip addressing (up to 4 devices can be connected
in parallel)
s Low noise
• ≤ 0.002% THD + noise
• 10 µVrms residual noise
s 5 V single power supply
s Silicon-gate CMOS process
PINOUT
(Top View)
RSTN 1
ADRS1
ADRS2
DVDD
LOUT
LIN
AVDD
VRL 8
16 MDT
MCK
MLEN
DVSS
ROUT
RIN
AVSS
9 VRR
PACKAGE DIMENSIONS
(Unit: mm)
16 pin VSOP
APPLICATIONS
s Audio equipment
ORDERING INFORMATION
Device
SM6451AV
Package
16-pin VSOP
0.275TYP
5.1 0.2
0.65
0.10
+ 0.10
0.22 - 0.05 _{0.12 M}
0.15^+-00..105
0 10
0.5 0.2
NIPPON PRECISION CIRCUITS—1