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UBA1702A

Features: Speech part· Driver for the line interrupter that can be either a PMOST when UBA1702 is used or a PNP when UBA1702A is used· Adjustable over-current protection· Adjustable over-voltage protection for transmission circuit· Adjustable mute (dialling mode voltage; DMO or NSA)· Adjustable cu...

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UBA1702A: Features: Speech part· Driver for the line interrupter that can be either a PMOST when UBA1702 is used or a PNP when UBA1702A is used· Adjustable over-current protection· Adjustable over-voltage pro...

UBA1702A Data Sheet

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Part Number:
UBA1702A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/24

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Product Details

Description



Features:

Speech part
· Driver for the line interrupter that can be either a PMOST when UBA1702 is used or a PNP when UBA1702A is used
· Adjustable over-current protection
· Adjustable over-voltage protection for transmission circuit
· Adjustable mute (dialling mode voltage; DMO or NSA)
· Adjustable current loop detection (hook switch status)
· Microcontroller supply
· Provision for electronic hook switch.
Ringer part
· Over-voltage protection
· Ringer frequency output for frequency discrimination
· Adjustable ringer threshold for piezo-driver enable
· Three bits ringer volume control
· Bridge-tied-load (BTL) output stage for piezo transducer
· Fast start-up microcontroller supply.
Miscellaneous
· Separated ground pins for transmission circuit interface and control signals (e.g. for TEA1064A)
· Possibility to supply the microcontroller with an external voltage source.




Application

· Telephone sets with software controlled ringer function
· Telephone sets with electronic hook switch.


Pinout

Connection Diagram


Specifications

SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VSDI,VSDO maximum input/output switch driver voltage
(pins SDI or SDO)		 DC; note 1
-
240
V
pulsed; note 2
-
400
V
VEHI maximum hook switch input voltage (pin EHI) DC; note 1
-
240
V
pulsed; note 2
-
400
V
Vi(max) maximum voltage at all logic inputs (pins DPI, MSI, RV0, RV1, RV2 and RMI)  
VSS-0.4
VDD+0.4
V
Vn(max) maximum voltage at all other pins  
-
24
V
ISPI(max) maximum speech part input current (pin SPI)  
-
150
mA
IRPI(max) maximum ringer part input current (pin RPI)  
-
70
mA
Ptot total power dissipation
UBA1702
UBA1702T		 Tamb = 75 °C
-
-
1
0.625
W
W
Tstg IC storage temperature  
-40
+150
°C
Tamb operating ambient temperature  
-25
+75
°C
Notes
1. Continuous.
2. 2 kV surge:
    a) according to IEC 805-1 part 5. Test generator 10 s/700 ms according to CCITT (Rm1 = 15 and Rm2 = 25 ).
    b) pulse sequence > 60 s.
    c) number of surges: 10.
    d) polarity change after 5 surges.
    e) test circuit in combination with 150 V Voltage Dependent Resistor (VDR) and a 3.9 resistor connected in series
with the source of the PMOST interrupter (UBA1702).


Description

The UBA1702; UBA1702A performs the high voltage interface and ringer functions of the corded analog telephone set in close cooperation with a microcontroller and transmission circuit.

The UBA1702; UBA1702A incorporates several protections, a driver for the line interrupter and a ringer.Because of the practical division of functions between the microcontroller, the transmission circuit and the UBA1702;UBA1702A, it is possible to have a higher integration level thereby reducing significantly the number of discrete components in a telephone set.




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