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Motorola Electronic Components Datasheet

MC33215 Datasheet

Telephone Line Interface and Speakerphone Circuit

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MC33215
Advance Information
Telephone Line Interface and
Speakerphone Circuit
The MC33215 is developed for use in fully electronic telephone sets with
speakerphone functions. The circuit performs the ac and dc line termination,
2–4 wire conversion, line length AGC and DTMF transmission. The
speakerphone part includes a half duplex controller with signal and noise
monitoring, base microphone and loudspeaker amplifiers and an efficient
supply. The circuit is designed to operate at low line currents down to 4.0 mA
enabling parallel operation with a classical telephone set.
Highly Integrated Cost Effective Solution
Straightforward AC and DC Parameter Adjustments
Efficient Supply for Loudspeaker Amplifier and Peripherals
Stabilized Supply Point for Handset Microphone
Stabilized Supply Point for Base Microphone
Loudspeaker Amplifier can be Powered and Used Separately
Smooth Switch–Over from Handset to Speakerphone Operation
Adjustable Switching Depth for Handsfree Operation
52 1
FB SUFFIX
PLASTIC PACKAGE
CASE 848B
(TQFP–52)
42
1
B SUFFIX
PLASTIC PACKAGE
CASE 858
(SDIP–42)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC33215FB
MC33215B TA = –20° to +70°C
TQFP–52
SDIP–42
Simplified Application
DTMF
Handset
Microphone
Base
Microphone
VCC or
External Supply
Base Loudspeaker
MF
HM
BM
LS
AC
Impedance
Attenuator
Duplex
Controller
Attenuator
DC Offset
Line Current
Current
Splitter
1:10
Line
Driver
VCC Supply
DC Slope
Telephone
Line
Receive Signal
Rx Handset Earpiece
Auxiliary Input
This device contains 2782 active transistors.
This document contains information on a new product. Specifications and information herein
arMe OsuTbjOecRt tOo cLhAangAeNwAithLoOut GnotIiCce.DEVICE DATA
© Motorola, Inc. 1997
Rev 0
1


Motorola Electronic Components Datasheet

MC33215 Datasheet

Telephone Line Interface and Speakerphone Circuit

No Preview Available !

MC33215
FEATURES
Line Driver and Supply
AC and DC Termination of Telephone Line
Adjustable Set Impedance for Real and Complex
Termination
Efficient Supply Point for Loudspeaker Amplifier and
Peripherals
Two Stabilized Supply Points for Handset and Base
Microphones
Separate Supply Arrangement for Handset and
Speakerphone Operation
Handset Operation
Transmit and Receive Amplifiers
Differential Microphone Inputs
Sidetone Cancellation Network
Line Length AGC
Microphone and Earpiece Mute
Separate Input for DTMF and Auxiliary Signals
Parallel Operation Down to 4.0 mA of Line Current
Speakerphone Operation
Handsfree Operation via Loudspeaker and Base
Microphone
Integrated Microphone and Loudspeaker Amplifiers
Differential Microphone Inputs
Loudspeaker Amplifier can be Powered and Used
Separately from the Rest of the Circuit
Integrated Switches for Smooth Switch–Over from
Handset to Speakerphone Operation
Signal and Background Noise Monitoring in Both
Channels
Adjustable Switching Depth for Handsfree Operation
Adjustable Switch–Over and Idle Mode Timing
Dial Tone Detector in the Receive Channel
Figure 1. Pin Connections
52 51 50 49 48 47 46 45 44 43 42 41 40
1 SLB
2 REG
3 SLP
4 MFI
5 HM1
6 HM2
7 BM2
8 BM1
9 VDD
10 TSA
11 TSE
12 TBN
13 MUT
TQFP–52
LSF 39
BVO 38
PPL 37
LSI 36
VOL 35
SWD 34
REF 33
AGC 32
Gnd 31
RLS 30
RSA 29
RSE 28
RBN 27
14 15 16 17 18 19 20 21 22 23 24 25 26
(Top View)
1 VCC
2 VLN
3 VHF
4 VMC
5 SLB
6 REG
7 SLP
PGD 42
LSO 41
VLS 40
LSB 39
LSF 38
BVO 37
PPL 36
8 MFI
LSI 35
9 HM1
VOL 34
10 HM2
11 BM2
12 BM1
SWD 33
SDIP–42
REF 32
AGC 31
13 VDD
14 TSA
15 TSE
Gnd 30
RLS 29
RSA 28
16 TBN
RSE 27
17 MUT
RBN 26
18 SPS
RXI 25
19 PRS
GRX 24
20 SWT
21 LSM
RXO 23
RXS 22
(Top View)
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33215
Description Telephone Line Interface and Speakerphone Circuit
Maker Motorola
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MC33215 Datasheet PDF





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