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SSM-2005 Dataheets PDF



Part Number SSM-2005
Manufacturers Analog Devices
Logo Analog Devices
Description Decoder 5.1-Channel Soundfield Generator
Datasheet SSM-2005 DatasheetSSM-2005 Datasheet (PDF)

a 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.

  SSM-2005   SSM-2005


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a 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 GENERAL DESCRIPTION Decoder 5.1-Channel Soundfield Generator SSM2005 PIN CONFIGURATIONS 48-Lead SSOP (RS Suffix) R FILTER IN R FILTER OUT L FILTER IN L FILTER OUT L OUT L OUT A L IN R OUT R OUT A R IN VEE ACOM AUDIO GND GND VCC (L+R) OUT (L–R) OUT (L–R) HIGH IN (L–R) LOW IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 ® CENTER OUT LF OUT RF OUT LS OUT RS OUT NOISE IN NOISE OUT LOAD RESET DATA IN VCC ACOM AUDIO GND GND VEE 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 SSM2005 37 TOP VIEW 36 (Not to Scale) 35 34 33 32 31 30 29 28 27 26 25 The SSM2005 Circle Surround® decoder produces true 5.1-channel surround soundfield from any stereo source, including VCD, DVD, VCR, CD and FM stereo broadcasts. The SSM2005 is also compatible with encoded sources, such as Dolby ProLogic® and Circle 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 engineers 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 realistic 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. R HIGH BAND DET. L HIGH BAND DET. HIGH BAND DET. OUT R LOW BAND DET. L LOW BAND DET. LOW BAND DET. OUT INPUTS LEFT RIGHT ANALOG SIGNAL PROCESSING OUTPUTS LEFT RIGHT STEERING MATRIX AND OUTPUT AMPLIFIERS CENTER LEFT SURROUND RIGHT SURROUND L+R FOR SUBWOOFER RESET SERIAL BUS STEERING CONTROL GENERATOR MODE CONTROL LOGIC AND NOISE GENERATOR Figure 1. Simplified Block Diagram and are registered trademarks of SRS Labs, Inc. and ValenceTechnology Ltd. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 SSM2005–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter INPUT CHARACTERISTICS␣ Level1 Input Impedance OUTPUT CHARACTERISTICS Level Left Front Right Front Center Left Rear, Right Rear Channel Separation Left Front and Right Front / Center Left Rear and Right Rear / Center Left Rear, Left Front Left Rear, Right Rear Output Impedance DYNAMIC PERFORMANCE␣ Total Harmonic Distortion + Noise Signal-to-Noise Ratio Dynamic Range, Output Headroom NOISE GENERATOR␣ Output Level2 Matching AUTOBALANCE Capture Range Capture Time CONTROL LOGIC␣ Logic Thresholds High (1) Low (0) Input Current Timing Characteristics POWER SUPPLIES␣ Operating Voltage Range3 Current NOTES 1 0 dBd = 300 mV rms. 2 With filter shown in Figure 8. 3 Specifications apply for V S = ± 6 V. Specifications subject to change without notice. (VS = ± 6.0 V, TA = ؉25؇C, f = 2 kHz, Modes: Video, 5-2-5, Center On, Sound Spread Off, Autobalance Off, Noise Off) Conditions ZSOURCE < 10 Ω L and R Inputs Min Typ 0 10 Max Units dBd kΩ Symbol VL, VR ZIN LT = 0 dBd, RT = Off RT = 0 dBd, LT = Off LT = RT = 0 dBd, In Phase, Video Mode LT = RT = 0 dBd, Out of Phase LT = RT, In Phase, Video Mode LT = RT, Out of Phase LT = RT, Out of Phase LT = RT, Out of Phase ZOUT THD+N SNR DR HR All Channels Noise Floor to 1% THD All Channels Noise Mode On, A-Weighted All Channels | VH | – |VL| VL = VR > –10 dBd, |VLEFT – VRIGHT | < 3 dB Logic Levels Referenced to ACOM 2.4 0 0 +6 +3 30 40 30 30 10 0.0.


11016 SSM-2005 SSM2475


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