SSM-2005 Analog Devices, SSM-2005 Datasheet

no-image

SSM-2005

Manufacturer Part Number
SSM-2005
Description
Search ---> SSM2005
Manufacturer
Analog Devices
Datasheet
www.DataSheet4U.com
a
GENERAL DESCRIPTION
The SSM2005 Circle Surround
surround soundfield from any stereo source, including VCD, DVD,
VCR, CD and FM stereo broadcasts. The SSM2005 is also compat-
ible with encoded sources, such as Dolby ProLogic
Surround encoded movies and music. External delays and noise
reduction processors are not required for the surround channels.
Circle Surround encoded stereo signals will produce a full 360º
soundfield when played through the SSM2005. Recording engi-
neers can encode sounds to any of the five speakers surrounding
the listener. Left Front, Right Front, Center, and differentiated
Left and Right surround channels are generated, providing a realis-
tic ambiance effect with either 4- or 5-speaker configurations.
The SSM2005 is available from Analog Devices, subject to the
License and Royalty requirements as described on the following
page of the data sheet.
Circle Surround is a registered trademark of SRS Labs, Inc. and Valence Technology Ltd.
Dolby ProLogic is a registered trademark of Dolby Laboratories Licensing Corporation, San Francisco, California.
Circle Surround technology is protected under one or more of the following U.S. Patents and corresponding patents
worldwide: 5,319,713; 5,333,201; 5,638,452; 5,771,295.
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.
FEATURES
Generates 5.1-Channel Soundfield from All Stereo Sources
No Pre-Encoding Required
Excellent Decoding of Pre-Encoded Sources
4- or 5-Speaker Operation
Subwoofer Output
Full Bandwidth on All Channels
Optimized Modes for Video and Music
Excellent Surround Image at All Positions
Independent Left and Right Surround Steering
No Surround Channel Delay Required
Built-In White Noise Generator
APPLICATIONS
Home Theater Receivers
VCD/DVD Players
Auto Sound Receivers and Amplifiers
Surround Sound Decoders
Karaoke
Computer Audio Boards
Video Games
and
are registered trademarks of SRS Labs, Inc. and ValenceTechnology Ltd.
®
decoder produces true 5.1-channel
®
and Circle
5.1-Channel Soundfield Generator
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
INPUTS
RIGHT
LEFT
HIGH BAND DET. OUT
LOW BAND DET. OUT
R HIGH BAND DET.
L HIGH BAND DET.
ACOM AUDIO GND
R LOW BAND DET.
L LOW BAND DET.
PROCESSING
GENERATOR
Figure 1. Simplified Block Diagram
R FILTER OUT
L FILTER OUT
(L–R) HIGH IN
STEERING
(L–R) LOW IN
CONTROL
ANALOG
R FILTER IN
SIGNAL
L FILTER IN
(L+R) OUT
(L–R) OUT
R OUT A
L OUT A
PIN CONFIGURATIONS
R OUT
L OUT
GND
R IN
World Wide Web Site: http://www.analog.com
L IN
V
V
CC
EE
48-Lead SSOP
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
(RS Suffix)
(Not to Scale)
SSM2005
TOP VIEW
STEERING MATRIX
LOGIC AND NOISE
MODE CONTROL
AND OUTPUT
GENERATOR
AMPLIFIERS
© Analog Devices, Inc., 1999
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SSM2005
CENTER OUT
LF OUT
RF OUT
LS OUT
RS OUT
NOISE IN
NOISE OUT
LOAD
RESET
DATA IN
V
ACOM AUDIO GND
GND
V
WRITE
CLOCK IN
FRONT/REAR TC FILTER
LOW BAND TC FILTER
HIGH BAND TC FILTER
FRONT/REAR DET.
FRONT/REAR (L–R) DET.
FRONT/REAR (L+R) DET.
AUTOBALANCE LOCKOUT
AUTOBALANCE TC
CC
EE
®
Decoder
OUTPUTS
RIGHT
SURROUND
L+R FOR
SUBWOOFER
LEFT
CENTER
LEFT
SURROUND
RESET
SERIAL BUS
RIGHT

Related parts for SSM-2005

SSM-2005 Summary of contents

Page 1

... The SSM2005 Circle Surround surround soundfield from any stereo source, including VCD, DVD, VCR, CD and FM stereo broadcasts. The SSM2005 is also compat- ible with encoded sources, such as Dolby ProLogic Surround encoded movies and music. External delays and noise reduction processors are not required for the surround channels. ...

Page 2

... All equipment manufactured using any SSM2005 Circle Surround decoder must carry the Circle Surround logo on the front panel in a manner approved in writing by SRS Labs, Inc. or Valence Technology Ltd. If the Circle Surround logo is printed in users manuals, service manuals or advertisements, it must appear in a form approved in writing by SRS Labs, Inc ...

Page 3

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the SSM2005 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

... SSM2005 –Typical Performance Characteristics ± 300mV rms 100k L 1 0.1 CENTER OUT LF, RF OUT 0.01 20 100 1k FREQUENCY – Hz Figure 2. THD + N vs. Frequency; Front Channels www.DataSheet4U.com ± 300mV rms 100k L 1 0.1 LS OUT RS OUT 0.01 20 100 1k FREQUENCY – Hz Figure 3. THD + N vs. Frequency; Surround Channels ...

Page 5

... HIGH BAND TC FILTER R HIGH BAND DET FRONT/REAR DET. L HIGH BAND DET FRONT/REAR (L–R) DET. HIGH BAND DET. OUT 21 28 FRONT/REAR (L+R) DET. R LOW BAND DET AUTOBALANCE LOCKOUT 26 L LOW BAND DET AUTOBALANCE TC LOW BAND DET. OUT 24 –5– SSM2005 ...

Page 6

... SSM2005 Pin # Name 1 R Filter Filter Out 3 L Filter Filter Out 5 L Out 6 L Out Out 9 R Out ACOM Audio GND 13 GND (L+R) Out 16 (L–R) Out www.DataSheet4U.com 17 (L–R) High In 18 (L– ...

Page 7

... This digital noise wave- form is band-pass filtered externally to approximate white noise. Power Supplies The SSM2005 may be operated from regulated supplies that can supply 45 mA each. The recommended operating voltage is –7– ...

Page 8

... Serial Data Control Inputs The SSM2005 provides a simple 3- or 4-wire serial interface to control the mode settings for the device. Data is input on the DATA IN pin, while CLOCK IN is the serial clock. Data can be shifted into the SSM2005 at clock rates MHz. STEREO INPUTS L ...

Page 9

... –9– SSM2005 Mode C Noise On LF Noise On RF Noise On LS Noise On RS Noise On All Mute Autobalance On Autobalance Off Center Active Phantom Center Sound Spread On Sound Spread Off 5.2.5 Mode 4.2.4 Mode Video Mode Music Mode Noise Off, Autobalance On, Center Active, Sound Spread On, 5 ...

Page 10

... SSM2005 Timing Symbol Description t Input Clock Pulsewidth CL t Input Clock Pulsewidth CH t Data Setup Time DS t Data Hold Time DH t Positive CLK Edge to End of Write CW t Write to Clock Setup Time WC t End of Load Pulse to Next Write (4-Wire Mode End of Write to Start of Load (4-Wire Mode) ...

Page 11

... The following tables demonstrate the differences between the modes of the SSM2005 under various input conditions. The L and R inputs are at 2 kHz, and are shown in terms of their T differences in magnitude (in dB) and phase (in degrees) ...

Page 12

... F 100 SSM2275 0.1 F 100 0 SSM2005 0 SSM2275 0.1 F SSM2275 0.1 F 909 453 453 + Figure 8. Typical Application Schematic –12– OUT 47 LF ...

Page 13

... Here, Pin 15 is connected to a 2nd order Bessel low-pass filter. The circuit uses the SSM2275, a low noise audio op amp that can run from the same 6 V that power the SSM2005. Using the component values shown in Figure 9, the filter’s cutoff frequency is 100 Hz. ...

Page 14

... A 2.2 k resistor connects the microphone to the +6 V supply rail, providing proper biasing for an electret microphone. The SSM2402 is used as a clickless switch, connecting the center output to either the center out from the SSM2005 or the microphone. In Circle Surround mode, the control voltages to the SSM2402 connect the output from the SSM2005 to the center output ...

Page 15

... REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 48-Lead SSOP (RS Suffix) 0.630 (16.00) 0.620 (15.75 PIN 1 0.110 (2.79) 0.095 (2.41) 0.025 (0.635) 0.0135 (0.343) SEATING BSC 0.008 (0.203) PLANE –15– 0.299 (7.59) 0.292 (7.42) 0.410 (10.41) 0.400 (10.16 0.040 (1.02) 0.010 (0.254) 0.024 (0.61) 0.005 (0.127) SSM2005 ...

Related keywords