UTCTA31002A LINEAR INTEGRATED CIRCUIT

2

BLOCK DIAGRAM

LOW

OSC

HIGH

OSC

AMP

POWER SUPPLY (WITH HYSTERESIS)

8

6

7

4

3

1

5

2

OUTPUT

R3

R2

C3

C2

Note:R2,R3,C2 and C3 are parts externally mounted

°C, all voltage referenced to GND unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

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

2.8

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

Pin6=6V, Pin7=GND

17.0

19.0

21.0

V

Output Voltage Low

VOL

Vcc=21V, I8=15mA

Pin6=GND, Pin7=6V

1.6

V

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=0.47

µF

9.0

10

11.0

Hz

*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.