UB855D, UB880D, UBA1702 Selling Leads, Datasheet
MFG:PHI Package Cooled:DIP D/C:9827+
UB855D, UB880D, UBA1702 Datasheet download
Part Number: UB855D
MFG: PHI
Package Cooled: DIP
D/C: 9827+
UB855D, UB880D, UBA1702
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Info of UB855D
Info of UB880D
Info of UBA1702
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About UBA1702
PDF/DataSheet Download
Datasheet: UBA1702
File Size: 182782 KB
Manufacturer: PHILIPS [Philips Semiconductors]
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UBA1702 General 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.
UBA1702 Maximum Ratings
|
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 |
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).
UBA1702 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.
UBA1702 Typical Application
· Telephone sets with software controlled ringer function
· Telephone sets with electronic hook switch.
· Telephone sets with electronic hook switch.
UBA1702 Connection Diagram
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