TCA3388FP MOTOROLA [Motorola, Inc], TCA3388FP Datasheet

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TCA3388FP

Manufacturer Part Number
TCA3388FP
Description
TELEPHONE LINE INTERFACE
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
Advance Information
Telephone Line Interface
functions of a telephone set in combination with a microcontroller and a ringer.
It includes dc and ac line termination, the hybrid function with 2 adjustable
sidetone networks, handset connections and an efficient supply point.
FEATURES
Line Driver and Supply
Handset Operation
Dialing and Ringing
Application Areas
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
The TCA3388 is a telephone line interface circuit which performs the basic
DC and AC Termination of the Telephone Line
Selectable DC Mask: France, U.K., Low Voltage
Current Protection
Adjustable Set Impedance for Resistive and Complex Termination
Efficient Supply Point for Peripherals
Hook Status Detection
Transmit and Receive Amplifiers
Double Anti–Sidetone Network
Line Length AGC
Microphone and Earpiece Mute
Transmit Amplifier Soft Clipping
Interrupter Driver for Pulse–Dialing
Reduced Current Consumption During Pulse–Dialing
DTMF Interfacing
Ringing via External Ringer
Corded Telephony
Cordless Telephony Base Station
Answering Machines
Fax
Intercom
Modem
TCA3388DP
TCA3388FP
Motorola, Inc. 1995
Device
SAO
LAO
HYS
HYL
ORDERING INFORMATION
IMP
RXI
TXI
Mic
LAI
CM
TELEPHONE LINE
20
TCA3388
PIN CONNECTIONS
SEMICONDUCTOR
Temperature Range
TECHNICAL DATA
Order this document by TCA3388/D
10
PLASTIC PACKAGE
PLASTIC PACKAGE
1
2
3
4
5
6
7
8
9
Tested Operating
INTERFACE
T A = 0 to +70 C
20
1
CASE 751D
DP SUFFIX
FP SUFFIX
CASE 738
(Top View)
1
20
19
18
17
16
15
14
13
12
11
RXO2
RXO1
Gnd
V CC
I ref
MUT
PI
HSO
DCM
SAI
Package
SOIC
DIP
1

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TCA3388FP Summary of contents

Page 1

... Mic Gnd 17 4 LAO ref LAI 15 6 MUT HYL HYS HSO DCM IMP 10 11 SAO SAI (Top View) ORDERING INFORMATION Tested Operating Device Temperature Range Package TCA3388DP DIP +70 C SOIC TCA3388FP Motorola, Inc. 1995 1 ...

Page 2

Handset Ear Earpiece Handset Mic MIcrophone MAXIMUM RATINGS Rating Maximum Junction Temperature Storage Temperature Range NOTE: Devices should not be operated at or outside these values. The “Recommended Operating Limits” provide for actual device operation. RECOMMENDED OPERATING CONDITIONS Characteristic Operating ...

Page 3

DC ELECTRICAL CHARACTERISTICS (continued) Characteristic SPEECH AMPLIFIERS HYL and HYS DC Bias Voltage Normal Mode PI = High Microphone Amplifier DC Bias at TXI Saturation Voltage at Mic @ 1.0 mA Leakage Current into Mic @ 3.7 V HOOK STATUS ...

Page 4

AC ELECTRICAL CHARACTERISTICS Characteristic TRANSMIT MODE French and U.K. Maximum Transmit Gain (I2 = 3.0 A) Line Length Regulation ( Gain in Protection Mode ( Low Voltage Mode Maximum Transmit Gain (I2 = 3.0 ...

Page 5

AC ELECTRICAL CHARACTERISTICS (continued) Characteristic DISTORTION Low Voltage Transmit ( Receive (I2 = 6.0 A) NOTE the differential earpiece voltage across Pins 19 and 20. TYPICAL TEMPERATURE PERFORMANCE Characteristic V CC Regulated Supply @ ...

Page 6

Concept With a TCA3388, a microcontroller and a ringer, a basic telephone set can be built according to the concept depicted in Figure 1. In off–hook position, the application is in speech mode. The line current flows through transistor T2 ...

Page 7

DC CHARACTERISTICS AND STARTUP The dc mask has the general form as depicted in Figure 3. The TCA3388 offers the possibility to adjust the dc characteristics of all 4 regions via mask selection and hardware adjustments. The selection of the ...

Page 8

The TCA3388 offers the possibility to connect 2 sidetone networks Z1 and Z2. For correct dc operation, the dc impedance of these networks must be equal. When only 1 sidetone network is used, Pin HYS has to be connected to ...

Page 9

Figure 7. Derived Network for Z21 in Case of Complex Set Impedance R v SAO Gnd + – ...

Page 10

Z1 R20 Line + Z2 R19 HYS HYL V01 SAI Line – RECEIVE The receive part of the TCA3388 is shown in Figure 10. The receive signal is picked up by the amplifiers ...

Page 11

The relation between the line current and the factor m is depicted in Figure 11. Figure 11. Modulation Factor Function of Line Current m 1.0 0 Lstart Lm For low line currents ...

Page 12

TCA3388 MOTOROLA ANALOG IC DEVICE DATA ...

Page 13

Figure 14. List of Components for Typical Application TCA3388 Location Item Item on Board Basic L.V. R1 Line Driver 16 R3 Line Driver R5 Line Driver R6 Receive Gain R7 Transmit Gain R8 DTMF Gain R9 Transmit Gain R11 DTMF ...

Page 14

Figure 14. List of Components for Typical Application TCA3388 Location Location Item Item on Board on Board Basic L.V. C18 Mask Setting – C19 Pin 19 C20 Pin 20 C21 Mask Setting – C22 Pin 17 C23 Z21 C24 Transmit ...

Page 15

SEATING PLANE 0.25 (0.010) –A– –B– 20X 0.010 (0.25 18X K MOTOROLA ANALOG IC DEVICE DATA ...

Page 16

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...

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