MC33110P Freescale Semiconductor, Inc, MC33110P Datasheet

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MC33110P

Manufacturer Part Number
MC33110P
Description
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Low Voltage Compander
compressing and expanding the dynamic range of an audio signal. One
circuit is configured as an expander, while the other circuit can be configured
as a compressor or expander. 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 and currents required.
temperature range of –40 to 85 C. The device is designed to accommodate
an 80 dB dynamic range from –60 dB to 20 dB, referenced to 100 mVrms.
RF links, and any application where the signal–to–noise ratio can be
improved by reducing the transmitted dynamic range. Other applications
include speakerphone and voice activated intercom, dictating machine,
standard telephone, etc.
applications and an SO–14 surface mount.
2.2 F
MOTOROLA RF/IF DEVICE DATA
10 F
Input
The MC33110 contains two variable gain circuits configured for
The MC33110 will operate from a supply voltage of 2.1 to 7.0 V, over a
Applications include cordless telephone, CB, walkie–talkie, most voice
The MC33110 is packaged in a 14 pin DIP for through–the–hole
Operating Supply Voltage: 2.1 to 7.0 V
No Precision External Components Required
80 dB Dynamic Range Compressed to 40 dB, Re–expandable to 80 dB
Unity Gain Level: 100 mVrms
Adjustable Response Time
Ambient Operating Temperature: –40 to 85 C
Temperature Compensated Reference
Applications Include Cordless Phone, CB Radio, Speakerphone, etc.
V CC
Output
Exp
Gnd
V B
Exp.
14
5
4
6
7
3
4.7 k
10 k
Reference
Generator
Bias
10 k
&
Simplified Block Diagram
Rectifier
Gain
+
V B
V B
Rectifier
+
Gain
10 k
4.7 k
10 k
12
11
10
8
9
20 k
20 k
2.0 F
2.2 F
Comp
Input
Comp
Output
1.0 F
MC33110D
MC33110P
Motorola, Inc. 1998
Device
ORDERING INFORMATION
Exp Output
Exp Filter
Exp Input
MC33110
LOW VOLTAGE
PIN CONNECTIONS
SEMICONDUCTOR
Temperature Range
COMPANDER
TECHNICAL DATA
14
Order this document by MC33110/D
PLASTIC PACKAGE
PLASTIC PACKAGE
Gnd
T A = –40 to 85 C
V ref
NC
V B
14
Operating
CASE 751A
1
D SUFFIX
CASE 646
P SUFFIX
1
2
3
4
5
6
7
(Top View)
(SO–14)
1
14
13
12
11
10
9
8
V CC
NC
Comp Filter
Comp Output
Comp Input
Inv Input
Comp Feedback
Plastic DIP
Package
SO–14
Rev 1
1

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MC33110P Summary of contents

Page 1

... F 4 Gain – Comp + Output 1 Device Comp MC33110D Input MC33110P Motorola, Inc. 1998 Order this document by MC33110/D MC33110 LOW VOLTAGE COMPANDER SEMICONDUCTOR TECHNICAL DATA SUFFIX PLASTIC PACKAGE CASE 751A (SO–14 SUFFIX PLASTIC PACKAGE CASE 646 PIN CONNECTIONS V ref V CC ...

Page 2

Name Pin V ref Expander Filter 3 Expander Output 4 Expander Input Ground 7 Compressor Feedback 8 Inverting Input 9 Compressor Input 10 Compressor Output 11 Compressor Filter ...

Page 3

MAXIMUM RATINGS Rating Symbol V CC Supply Voltage High Input Voltage (Pin 5 & 10) Low Input Voltage Output Source Current (Pin 4 & 11) Output Sink Current Junction Temperature NOTES: 1. Devices should not be operated at these values. ...

Page 4

ELECTRICAL CHARACTERISTICS ( 5 1.0 kHz, unless otherwise noted see Figure 1) Characteristic COMPRESSOR Peak Output Current Output Offset Pin 11, with respect to Pin 6, NO SIGNAL Change from ...

Page 5

Compressor Figure 2. Compressor Transfer Characteristics 1000 100 10 1.0 0.1 1 INPUT VOLTAGE (mVrms) Figure 4. Compressor Transfer Characteristics 10 0 –10 –20 –30 –60 –40 – INPUT VOLTAGE (dB) Figure 6. ...

Page 6

Compressor Figure 8. Power Supply Rejection (Compressor 220 100 Pin 10 Input Signal = – 5 ...

Page 7

Figure 14. Attack and Decay Times (Compressor) 100 80 60 Decay Time 40 Attack Time 2.0 4.0 6.0 C, CAPACITANCE AT PIN Figure 16. Attack and Decay Times (Compressor) V1 Output (Pin 11) V2 ...

Page 8

Compressor Figure 20. Compressor Gain Tracking versus Temperature 1.0 0 Shaded Area Depicts Typical Drift Range 100 Vrms Vrms –1.0 –40 – AMBIENT TEMPERATURE ( C) Figure 22. Compressor THD versus ...

Page 9

F I ref Input 10 k Compressor The compressor is an operational amplifier with a fixed input resistor and a variable gain cell in its feedback path as shown in Figure 24. The amplifier output ...

Page 10

Input Expander The expander is an operational amplifier with a fixed feedback resistor and a variable gain cell in its input path as shown in Figure 25. The input signal is sampled by the precision ...

Page 11

Signal–to–Noise Improvement Among the basic reasons for the original development of compander type circuits was to improve the signal–to–noise ratio of long distance telecom circuits, and of voice circuits which are transmitted over RF links (CBs, walkie–talkies, cordless phones, etc.). ...

Page 12

Use of wire wrapped boards should definitely be avoided. Since many applications of the MC33110 compander involve voice transmission over RF links, care must be taken Attack ...

Page 13

G –T– SEATING 14 PL PLANE 0.25 (0.010 SEATING PLANE Motorola reserves the right to make changes without further ...

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