UTC31001 Datasheet, PDF (1/3 Pages) Unisonic Technologies – TELEPHONE TONE RINGER

UTC31001
CIRCUIT
LINEAR INTEGRATED
TELEPHONE TONE RINGER
GENERAL DESCRIPTION
The UTC 31001 is a bipolar integrated circuit
designed for telephone bell replacement. It can also be
used as alarms or other alerting devices.
FEATURES
*Designed for telephone bell replacement.
*Low current drain for multiple extention of lines.
*Adjustable 2-frequency tone.
*Adjustable warbling rate.
*Bulit-in hysteresis prevents false triggering and
rotary dial 'CHIRPS'.
*Programmable for initiation voltage by simple
external resistor
DIP-8
BLOCK DIAGRAM
R2
C3
R3
4
7
6
3
LOW
OSC
C2
HIGH
OSC
AMP
8 OUTPUT
1
POWER SUPPLY (WITH HYSTERESIS)
5
2
Note:R2,R3,C2 and C3 are parts externally mounted
ABSOLUTE MAXIMUM RATINGS(Ta=25°C )
CHARACTERISTIC
SYMBOL
Supply Voltage
Vcc
Power Dissipation
Pd
Operating Temperature
Topr
Storage Temperature
Tstg
VALUE
30
400
-45 to 85
-65 to 150
UNIT
V
mW
°C
°C
UTC UNISONIC TECHNOLOGIES CO. LTD
1