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ML33111-5P Datasheet(PDF) 1 Page - LANSDALE Semiconductor Inc.

No. de pieza ML33111-5P
Descripción Electrónicos  Low Voltage Compander Silicon Monolithic Integrated Circuit
Download  12 Pages
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Fabricante Electrónico  LANSDALE [LANSDALE Semiconductor Inc.]
Página de inicio  http://www.lansdale.com
Logo LANSDALE - LANSDALE Semiconductor Inc.

ML33111-5P Datasheet(HTML) 1 Page - LANSDALE Semiconductor Inc.

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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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