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MC33111

Motorola
Part Number MC33111
Manufacturer Motorola
Description Low Voltage Compander
Published Feb 3, 2007
Detailed Description www.DataSheet4U.com Order this data sheet by MC33111/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC33111 Advance Informa...
Datasheet PDF File MC33111 PDF File

MC33111
MC33111

Overview
www.
DataSheet4U.
com Order this data sheet by MC33111/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC33111 Advance Information Low Voltage Compander The MC33111 contains two variable gain circuits configured for compressing and expanding the dynamic range of an audio signal.
One circuit is configured as an expander, and the other is configured as a compressor.
Each circuit has a full wave rectifier to provide average value information to a variable gain cell located in either the input stage or the feedback path.
An internal temperature stable bandgap reference provides the necessary precision voltages.
Included in the MC33111 are controls for muting each section independently, and for passthrough of both.
Two uncommitted op amps are available for peripheral functions.
The MC33111 will operate from a supply voltage of 3.
0 V to 7.
0 V, and over a temperature range of – 40 ° to + 85 ° C.
It is designed to accommodate a 60 dB dynamic range; from – 40 dB to + 20 dB referenced to 100 mVrms.
Applications include cordless telephone, CBs, walkie-talkies, and most voice RF links, and any application where an improvement in the signal to noise ratio is desired.
Other applications include speakerphones and voice activated intercoms, dictating machines, etc.
16 1 LOW VOLTAGE COMPANDER SILICON MONOLITHIC INTEGRATED CIRCUIT • • • • • • • • • • Operating Supply Voltage: 3.
0 V to 7.
0 V Output Voltage Swing = 2.
8 Vp-p with VCC = 3.
0 V No Precision External Components Required 60 dB Dynamic Range Compressed to 30 dB, Re-expandable to 60 dB Unity Gain Level set at 100 mVrms Attack and Decay Times Adjustable Mute and Passthrough Controls Two Uncommitted Op Amps Temperature Compensated Reference Available in Standard DIP and Surface Mount Packages P SUFFIX PLASTIC PACKAGE CASE 648 16 1 Simplified Block Diagram 20 k 15 k 40 k Rectifier 10 k Vb 5 ∆ Gain Rectifier 10 9 Microphone Vb 7 7.
5 k 40 k Bias & Reference Generator Mute/ Passthrough Logic 6 16 1 VCC ∆ Gain Vb Compressor 2 Output ...


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