MC34216A Datasheet, PDF (1/20 Pages) Motorola, Inc – PROGRAMMABLE TELEPHONE LINE INTERFACE CIRCUIT WITH LOUDSPEAKER AMPLIFIER

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MC34216A
Advance Information
Programmable Telephone
Line Interface Circuit with
Loudspeaker Amplifier
The MC34216A is developed for use in telephone applications where,
besides the standard telephone functions, the group listening–in feature is
also required. In cooperation with a microcontroller, the circuit performs all
basic telephone functions including DTMF generation and pulse–dialing.
The listening–in part includes a loudspeaker amplifier, an anti–howling
circuit and a strong supply. In combination with the TCA3385, the ringing is
performed via the loudspeaker.
• Programmable DC Mask, for France, U.K., and Voltage Regulated
Countries
• DC Mask for France and U.K. (MC34216ADWF)
• Programmable Volume for Listening–In and Ringing
• Small Amount of External Components
• On–Chip DTMF and Ring Signal Generator
• Efficient Supply Point for Loudspeaker Amplifier and Peripherals
• Programmable Modes for Speakerphone, Answering Machine, Fax and
Modem Applications
• Pilot and Idle Tones Provide Extra Phone Features
PROGRAMMABLE
TELEPHONE LINE
INTERFACE CIRCUIT WITH
LOUDSPEAKER AMPLIFIER
SEMICONDUCTOR
TECHNICAL DATA
28
1
DW, DWF SUFFIX
PLASTIC PACKAGE
CASE 751F
PIN CONNECTIONS
Simplified Block Diagram
DC and AC
Termination
Line +
Handset
Earpiece
Handset
MIcrophone
Base
Loudspeaker
Ear
Mic
LSP
DC Mask
Generation AC
Termination 2–4
Wire Conversion
Supply
Stabilizer
Line
Driver
Anti–
Howling
DTMF and
Ring
Generator
Micro-
controller
Interface
This device contains 6,507 active transistors.
Line –
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
AHO1 1
AHO2 2
MTF 3
MTC 4
AGnd 5
TXI 6
Mic 7
LAO 8
LAI 9
HYN 10
NDC 11
CM 12
IMP 13
SAO 14
28 AGC
27 RXO2
26 RXO1
25 RXI
24 LPI
23 LPO
22 Gnd
21 VCC
20 Iref
19 RS
18 Clk
17 D/HS
16 Osc
15 SAI
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC34216ADW
MC34216ADWF ^{TA = 0° to +70°C}
SO–28L
SO–28L
© Motorola, Inc. 1996
1