UTCTA31001 Datasheet, PDF (1/3 Pages) Unisonic Technologies – TELEPHONE TONE RINGER

UTC TA31001 LINEAR INTEGRATED CIRCUIT
TELEPHONE TONE RINGER
DESCRIPTION
The UTC 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
R2
C3
R3
4
7
6
3
LOW
OSC
C2
HIGH
OSC
AMP
1
POWER SUPPLY (WITH HYSTERESIS)
5
2
Note:R2,R3,C2 and C3 are parts externally mounted
8 OUTPUT
UTC UNISONIC TECHNOLOGIES CO. LTD ¹
QW-R108-003,A