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SSM2163S Datasheet

  • SSM2163S

  • Digitally Controlled 8 x 2 Audio Mixer

  • 16頁

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a
FEATURES
Each of 8 Inputs Can Be Assigned to Either or Both
Outputs
Voltage Inputs and Outputs 鈥?No Need For External
Amplifiers
Each Input Provides 63 dB of Attenuation in 1 dB Steps,
Plus Mute
鈥?2 dBu Signal-to-Noise Ratio (0 dBu = 0.775 V rms)
+10 dBu of Headroom
0.007% THD+N (Unity Gain, @ 1 kHz, 0 dBu)
Power-Up/System Mute Feature
Industry-Standard 3-Wire Serial Interface
Data Out Terminal Permits Daisy Chaining of Multiple
SSM2163s
Single or Dual Supply Operation
28-Pin Plastic DIP and SOIC Package
APPLICATIONS
Multimedia System Mixing
Audio Mixing Consoles
Broadcast Equipment
Intercom/Paging Systems
Musical Instruments
V
IN1
DCA
DCA
Digitally Controlled
8 2 Audio Mixer
SSM2163
SIMPLIFIED BLOCK DIAGRAM
SSM2163
V
IN2
VOLTAGE
REFERENCE
GENERATOR
V
IN3
DCA
V
CC
V
EE
ACOM
AGND
V
IN4
DCA
V
OUTL
V
IN5
DCA
OUTPUT
SWITCHING
NETWORK
V
OUTR
V
IN6
DCA
SYSTEM MUTE
DATA OUT
SHIFT
REGISTER
AND
ADDRESS
DECODER
CLK
DATA
LD
WRITE
DGND
V
DD
V
SS
V
IN7
DCA
GENERAL DESCRIPTION
V
IN8
DCA
The SSM2163 provides eight audio inputs, each of which can
be mixed under digital control to a stereo output. Each input
channel can be attenuated up to 63 dB in 1 dB intervals, plus
fully muted. Additionally, any input can be assigned to either or
both outputs. A standard 3-wire serial interface is employed,
plus a Data Out terminal to facilitate daisy chaining of multiple
mixer ICs. No external components are required for normal
operation.
Excellent audio performance is attained. The SSM2163 has a
signal-to-noise ratio of 鈥?2 dBu (0 dBu = 0.775 V rms), with
10 dBu of headroom resulting in total dynamic range of 92 dBu.
Total harmonic distortion plus noise is 0.007% at 1 kHz with all
levels set at unity gain.
DCA: DIGITALLY CONTROLLED ATTENUATOR
The SSM2163 can be operated from single (+5 V to +14 V) or
dual (鹵 4 V to
鹵
7 V) supplies, and is housed in 28-pin plastic
DIP and SOIC packages.
The SSM2163 is an ideal companion product to the Analog
Devices family of stereo codecs in high performance multi-
media systems requiring mixing of multiple signals.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
漏 Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703

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