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SSM2000 - HUSH Stereo Noise Reduction

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Datasheet Details

Part number SSM2000
Manufacturer Analog
File Size 252.39 KB
Description HUSH Stereo Noise Reduction
Datasheet download datasheet SSM2000 Datasheet

General Description

SSM2000 20 V– TOP VIEW 19 DIGITAL GND VCA PORT 7 (Not to Scale) 18 NC VCF DET IN SUM OUT 8 9 17 MUTE 16 DEFEAT 15 AUTO THRESHOLD CAP 14 DEFAULT THRESHOLD 13 NC VCA DET IN 10 VCF DET CAP 11 VCA DET CAP 12 NC = NO CONNECT 6.8µF L IN 6.8µF 1 2 3 1nF 24 23 22 1nF L OUT R OUT R VCF CAP 1 R VCF CAP 2 V– DIGITAL GND DO NOT CONNECT1 MUTE DEFEAT 0.22µF R IN L VCF CAP 1 L VCF CAP 2 V+ ANALOG COMMON (V+/2) VCA CONTROL PORT 20nF 2nF The SSM2000 is an advanced audio noise reduction system based on proprietary HUSH® circuitry.

HUSH combines a dynamic filter and downward expander to provide a high level of effectiveness without the sonic artifacts normally associated with noise reduction systems.

In addition, an Adaptive Threshold circuit detects nominal signal levels and dynamically adjusts both thresholds, thereby providing optimal results regardless of program source.

Overview

a HUSH Stereo Noise Reduction System with Adaptive Threshold SSM2000 PIN CONFIGURATION 24-Lead Plastic DIP 24-Lead SOIC L IN 1 R IN 2 L VCF C1 3 L VCF C2 4 V+ 5 ACOM 6 24 L OUT 23 R OUT 22 R VCF C1 21 R VCF.

Key Features

  • Up to 25 dB of Noise Reduction from Virtually Any Audio Source without Sonic Artifacts “Single-Ended” Operation Eliminates Need for EncodeDecode Process Adaptive Threshold Dynamically Adjusts to Changing Nominal Signal Levels Effectively Decodes Dolby B® Encoded Sources Direct VCA Control Port Access for Additional Level Control Functionality Logic-Controllable Bypass and Muting 100 dB Dynamic Range (Noise Reduction OFF) 0.02% Typical THD+N (@ 1 kHz, Noise Reduction OFF) +7 V to +18 V Operation.

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