mc33111d Freescale Semiconductor, Inc, mc33111d Datasheet

mc33111d

Manufacturer Part Number

mc33111d

Description

Low Voltage Compander

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC33111D.pdf (12 pages)

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MOTOROLA

SEMICONDUCTOR

TECHNICAL DATA

Advance Information

Low Voltage Compander

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.

independently, and for passthrough of both. Two uncommitted op amps

are available for peripheral functions.

over a temperature range of – 40

accommodate a 60 dB dynamic range; from – 40 dB to + 20 dB referenced

to 100 mVrms.

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.

This document contains information on a new product. Specifications and information herein are subject to change

without notice. This device contains 329 active transistors.

Microphone

The MC33111 contains two variable gain circuits configured for

Included in the MC33111 are controls for muting each section

The MC33111 will operate from a supply voltage of 3.0 V to 7.0 V, and

Applications include cordless telephone, CBs, walkie-talkies, and most

Operating Supply Voltage: 3.0 V to 7.0 V

Output Voltage Swing = 2.8 V p-p with V CC = 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

Expander

Input

Compressor

Input

V+

1.0 F

0.5

MC33111

10 k

Simplified Block Diagram

Rectifier

Gain

40 k

15 k

to + 85 C. It is designed to

7.5 k

40 k

Rectifier

Gain

Passthrough

Reference

Generator

Mute/

Logic

Bias &

20 k

Expander

Output

Compressor

Output

V CC

MC33111D

MC33111P

Device

ORDERING INFORMATION

INTEGRATED CIRCUIT

SILICON MONOLITHIC

LOW VOLTAGE

Order this data sheet by MC33111/D

COMPANDER

MC33111

PLASTIC PACKAGE

TRUTH TABLE

– 40 to + 85 C

Temperature

CASE 751B

CASE 648

D SUFFIX

P SUFFIX

(SO-16)

Range

Expander Mute

Passthrough

Comp. Mute

Function

Normal

Motorola, Inc. 1994

Plastic DIP

Package

SO-16

Related parts for mc33111d

mc33111d Summary of contents

Page 1

... P SUFFIX PLASTIC PACKAGE CASE 648 SUFFIX PLASTIC PACKAGE CASE 751B (SO-16) TRUTH TABLE Function Normal Comp. Mute Expander Mute Passthrough ORDERING INFORMATION Temperature Range Device Package MC33111D SO-16 – MC33111P Plastic DIP Motorola, Inc. 1994 ...

Page 2

Name Pin Ground 1 Connect to a clean power supply ground. Output of the compressor section. Compressor Output 2 Compressor Input 3 Compressor input. The input impedance is nominally 10 kΩ. Nominal signal range is 1.0 mVrms to 1.0 Vrms ...

Page 3

RECOMMENDED OPERATING CONDITIONS Characteristic V CC Supply Voltage Input Signal Voltage Range (3.0 V < < 7.0 V) Compressor — Normal and Mute Mode — Passthrough Mode Expander — Normal Mode — Mute Mode — Passthrough Mode Frequency ...

Page 4

ELECTRICAL CHARACTERISTICS ( 3 1.0 kHz unless noted.) Characteristic EXPANDER (Pin 12 = Low, unless noted) Power Supply Rejection @ 1.0 kHz V in (Pin 14 ...

Page 5

TEMPERATURE PERFORMANCE (Typical performance based on device characterization, not guaranteed.) Characteristic Power Supply Current @ 3 7.0 V Reference Voltage (Vb Gain ( 100 mVrms) — Compressor 0 ...

Page 6

Figure 3. Transfer Characteristics 1000 100 Compressor 10 Expander 1.0 1.0 10 100 INPUT VOLTAGE (mVrms) Figure 5. Frequency Response (Compressor 1.0 mVrms mVrms 10 5.0 V ...

Page 7

Figure 9. Attack and Decay Times (Compressor) 100 80 Decay Time Attack Time 0 0 1.0 2.0 3.0 C, CAPACITANCE AT PIN 5 (µF) Figure 11. Compressor Gain Tracking versus Temperature 1.0 0 Shaded area depicts typical ...

Page 8

Introduction The MC33111 compander (COMpressor and exPANDER) is composed of two variable gain circuits which provide compression and expansion of a signal’s dynamic range. The compressor will take a signal with dynamic range (1 1.0 ...

Page 9

Input Expander The expander is an noninverting amplifier with a fixed feedback resistor and a variable gain cell in its input path as shown in Figure 16. The input signal is sampled by the precision rectifier which, ...

Page 10

Power Supply The MC33111 requires a supply voltage between 3.0 V and 7.0 V, and a nominal current of 1.6 mA. The supply voltage should be well filtered and free of ripple. A minimum of 4.7 µF in parallel with ...

Page 11

The MC33111 compander is not limited long distance telephony applications. It can be used in any system requiring either an improved signal-to-noise ratio reduced dynamic range. Such applications include telephones, speakerphones, tape recorders, wireless microphones, ...

Page 12

0.25 (0.010) - -T- SEATING PLANE 0.25 (0.010) M Motorola reserves the right to make changes without further notice to any products herein. ...

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