ALD2321A/ALD2321B

Advanced Linear Devices

8

ALD2321

PINS OUT1, OUT1H, OUT2, OUT2H,

INTERNAL CIRCUIT CONFIGURATIONS

RESPONSE TIME MEASUREMENT CIRCUIT

E-TRIM CIRCUIT

+

OUT

Input

Offset

Trim

Circuit

Level

Shift/

Scaling

Input

Offset

Trim

Circuit

Level

Shift/

Scaling

+IN

-IN

-

TYPICAL APPLICATIONS

Response time is defined as the internal between the application

of an input step function and the instant when the output reaches

50% of its maximum value as measured by the following test circuit:

V+

PHOTO-

DETECTOR

LIGHT

-

-

+

+

LED

BUZZER

1/2 ALD2321

1/2 ALD2321

LED turns on as photo-detector

voltage reaches VLIMIT1.

Both LED and horn turns on as photo-

detector voltage reachesVLIMIT2.

VEXTERNAL= +12V, V+ = +5V

DUAL LIMIT PHOTO DETECTOR MONITOR

DUAL LIMIT WINDOW COMPARATOR

+

+

-

-

1/2 ALD2321

V+

1/2 ALD2321

* These pins should be isolated by surrounding them with ground trace in user's applications.

V+

V+

+

-

5.1K

Ω

OUT

+5V

10X INPUT STEP

1K

Ω

9K

Ω