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CA3228

Speed Control System with Memory

Harris Semiconductor 

Specifications CA3228

Absolute Maximum Ratings

Thermal Information

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +9.0V

Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA

Driver Command Input (ICMD), Pin 3 . . . . . . . . . . . . . . . . . . . . 2mA

Brake Input (IBRAKE), Pin 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA

Storage Temperature Range . . . . . . . . . . . . . . . . -65oC to +150oC

Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . +150oC

Thermal Resistance

θJA

Plastic DIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65oC/W

Power Dissipation Per Package

For TA = -40oC to +70oC . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2mW

For TA Above +70oC . . . . . . . . . . . Derate Linearly at 15.4mW/oC

Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . +265oC

Operating Temperature Range . . . . . . . . . . . . . . . . -40oC to +85oC

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation

of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Typical Switching Characteristics

Driver Command Input Hold Times (Based on 0.68µF on Pin 4):

ACCEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ms

COAST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ms

RESUME. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330ms

ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ms

OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ms

Internal Oscillator Frequency, FOSC . . . . . . . . . . . . . . . . . . . 10kHz

(Based on 0.001µF at Pin 5)

System Performance FOSC = 50kHz, fS/Speed Ratio = 2.22Hz/mph

Speed Sensor Input Frequency Range, fS at Pin 8 . .62Hz to 222Hz

Speed Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.45 mph

Minimum Operating Speed. . . . . . . . . . . . . . . . . . . . . . . . . . 25 mph

Maximum Stored Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mph

Redundant Brake Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 mph

Electrical Specifications TA = +25oC, VCC = 8.20V, Unless Otherwise Specified (Refer to Figures 2 and 3)

PARAMETERS

SYMBOLS TEST PIN TEST CONDITIONS

MIN

MAX

UNITS

Operating Voltage

Speed Sensor Input Voltage Amplitude

VCC Supply Current

Current Sense Voltage

Align Voltage

Command Idle Voltage

VCC

ICC

V7

V17

V3IDLE

13

7.40

9.00

V

T.P.B.

62Hz ≤ fS ≤ 222Hz

3.50

15.0

Vpp

13

7.50

30.0

mA

7

43kΩ to Ground

4.85

5.95

V

17

41kΩ to Ground

4.00

4.20

V

3

S1, S2, S3, S4, S5

7.6

7.9

V

Open

RESUME Command Voltage

ACCEL Command Voltage

COAST Command Voltage

OFF Voltage

ON Voltage

Brake Input Voltage

OUTPUT VOTLAGE

V3RES

V3ACCEL

V3COAST

V3OFF

V3ON

VBRAKE

3

3

3

3

T.P.A.

12

S2 Closed

S3 Closed

S4 Closed

S5 Closed

S1 Closed

S6 Closed

5.95

6.56

V

3.95

4.91

V

1.22

2.23

V

0

0.77

V

9.2

28

V

5.4

28

V

Gate

VAC

VENT

VOL

23

VOH

VOL

22

VOH

VOL

21

VOH

4.7kΩ to VCC

1.2kΩ to VCC

1.2kΩ to VCC

-

300

mV

8

-

V

-

400

mV

8

-

V

-

400

mV

8

-

V

10-32

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