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ML33111-5P Datasheet(PDF) 1 Page - LANSDALE Semiconductor Inc. |
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ML33111-5P Datasheet(HTML) 1 Page - LANSDALE Semiconductor Inc. |
1 / 12 page www.lansdale.com Page 1 of 12 Issue A ML33111 Low Voltage Compander Silicon Monolithic Integrated Circuit Legacy Device: Motorola MC33111 The ML33111 contains two variable gain circuits configured for compress- ing and expanding the dynamic range of an audio signal. One circuit is config- ured 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 tempera- ture stable bandgap reference provides the necessary precision voltages. Included in the ML33111 are controls for muting each section independ- ently, and for pass through of both. Two uncommitted op amps are available for peripheral functions. The ML33111 will operate from a supply voltage of 3.0 V to 7.0 V, and over a temperature range of TA –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. • 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 Simplified Block Diagram ML33111 PT CM EM VCC Compressor Output Expander Output 16 1 2 15 Mute/ Passthrough Logic Bias & Reference Generator Vb 15 k Rectifier 7.5 k 40 k 40 k Vb 10 k ∆ Gain Rectifier 6 7 Vb Vb Microphone V+ 1.0 µF 1.0 µF 0.5 9 10 5 3 11 14 0.5 Compressor Input Expander Input ∆ Gain 8 4 12 20 k P DIP 16 = EP PLASTIC PACKAGE CASE 648 16 1 SO 16 = -5P PLASTIC PACKAGE CASE 751B (SO-16) 16 1 CROSS REFERENCE/ORDERING INFORMATION MOTOROLA P DIP 16 MC33111P ML33111EP SO 16 MC33111D ML33111-5P LANSDALE PACKAGE Note: Lansdale lead free (Pb) product, as it becomes available, will be identified by a part number prefix change from ML to MLE. CM PT Function TRUTH TABLE 0 1 X 0 Normal Comp. Mute Expander Mute Passthrough EM 0 X 1 0 0 X X 1 |
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