TA31001 LINEAR INTEGRATED CIRCUIT
1
TELEPHONE TONE RINGER
DESCRIPTION
The Contek TA31001 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 extension of lines.
*Adjustable 2-frequency tone.
*Adjustable warbling rate.
*Built-in hysteresis prevents false triggering and
rotary dial 'CHIRPS'.
*Programmable for initiation voltage by simple
external resistor. DIP-8
BLOCK DIAGRAM
LOW
OSC
HIGH
OSC AMP
POWER SUPPLY (WITH HYSTERESIS)
8
674
3
1
5 2
OUTPUT
R3
R2 C3
C2
Note:R2,R3,C2 and C3 are parts externally mounted
Contek
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
TA31001 LINEAR INTEGRATED CIRCUIT
2
ABSOLUTE MAXIMUM RATINGS(Ta=25 C )
PARAMETER SYMBOL VALUE UNIT
Supply Voltage Vcc 30 V
Power Dissipation Pd 400 mW
Operating Temperature Topr -45 to 85 C
Storage Temperature Tstg -65 to 150 C
ELECTRICAL CHARACTERISTICS( Ta=25 C )
(All voltage referenced to GND unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Operating Supply Voltage Vcc 29 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 12 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
Pin6=6V, Pin7=GND
17.0 19 21 V
Output Voltage Low VOL Vcc=21V, I8=15mA
Pin6=GND, Pin7=6V
1.6 V
IIN(Pin 3)
IIN(Pin 7)
Pin3=6V, Pin4=GND
Pin7=6V, Pin6=GND
-
-
-
-
500
500
nA
nA
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 R2=165K, C2=0.47mF91011Hz
*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.
C:R SL=13K
B:R SL=6.8K
A:R SL=5K
3430262218141062 3430262218141062
Vcc(V),Supply voltage
3430262218141062 3430262218141062
Vcc(V),Supply voltage
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Icc(mA),Supply Current
0.5
1.5
2.5
3.5
4.5
5.5
6.5
7.5
8.5
Supply Current (mA)
Circuit Current-Supply Voltage
(No Load)
Supply Current Vs. Supply Voltage
(No Load)
Fig. 1 Fig. 2
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
TA31001 LINEAR INTEGRATED CIRCUIT
3
APPLICATION CIRCUIT
2
1
3
4
8
7
6
5
TIP
RING
C1
0.9 mF
R1
560 W
C4
22 mF/35V
D1
29V
R2
165k+-1%
C2
0.47 mF+-5%
5.6k - 1 M R3
191k+-1%
C3
6.9nF+-5%
15k
1300:8 W
SP
C5 0.22 mF
10k
Contek
TA31001
Fig. 3
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
