UTC UTC31001 Datasheet
UTC31001 LINEAR INTEGRATED
CIRCUIT
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
LOW
3
C2
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTIC SYMBOL VALUE UNIT
Supply Voltage Vcc 30 V
Power Dissipation Pd 400 mW
Operating Temperature Topr -45 to 85
Storage Temperature Tstg -65 to 150
OSC
1
POWER SUPPLY (WITH HYSTERESIS)
5 2
Note:R2,R3,C2 and C3 are parts externally mounted
(Ta=25°C )
R3
C3
674
HIGH
OSC
AMP
8
OUTPUT
°C
°C
UTC
1
UNISONIC TECHNOLOGIES CO. LTD
UTC31001 LINEAR INTEGRATED
CIRCUIT
ELECTRICAL CHARACTERISTICS
(All voltage referenced to GND unless otherwise specified)
( Ta=25°C )
CHARACTERISTIC SYMBOL TEST CONDITION MIN TYP. MAX UNIT
Operating Supply Voltage Vcc 29.0 V
Initiation Supply Voltage (note 1) Vsi See Fig.2 17 19 21 V
Initiation Supply Current (note 1) Isi 6.8K-Pin 2 to GND 1.4 3.5 4.2 mA
Sustaining Voltage (note 2) Vsus See Fig.2 9.7 11.0 12.0 V
Sustaining Current (note 2) Isus No Load Vcc=Vsus,See Fig.2 0.7 1.4 2.5 mA
Output Voltage High VOH Vcc=21V, I8=-15mA
Output Voltage Low VOL Vcc=21V, I8=15mA
IIN(Pin3)
IIN(pin7)
High Frequency 1 FH1 R3=191K, C3=6800pF 461 512 563 Hz
High Frequency 2 FH2 R3=191K, C3=6800pF 576 640 704 Hz
Low Frequency FL
*NOTE (See electrical characteristics sheet)
1. Initiation supply voltage (Vsi) is the supply voltage required to start the tone ringer oscillating.
2. Sustaining voltage (Vsus) is the supply voltage required to maintain oscillation.
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Icc(mA),Supply Current
0.5
Circuit Current-Supply Voltage
(No Load)
Vcc(V),Supply voltage
Pin6=6V, Pin7=GND
Pin6=GND, Pin7=6V
Pin3=6V, Pin4=GND
Pin7=6V, Pin6=GND
R2=165K, C2=0.47µF
Supply Current (mA)
34302622181410 6 2 34302622181410 6 2
Supply Current Vs. Supply Voltage
8.5
7.5
6.5
5.5
4.5
A:RSL=5K
3.5
B:RSL=6.8K
C:RSL=13K
2.5
1.5
0.5
Vcc(V),Supply voltage
17.0 19.0 21.0 V
1.6 V
500
500nAnA
9.0 10 11.0 Hz
(No Load)
34302622181410 6 2 34302622181410 6 2
Fig.2 Fig. 3
UTC
2
UNISONIC TECHNOLOGIES CO. LTD
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