S1

S0

SENSITIVITY

L

L

H

H

L

H

L

H

1

×

10

×

100

×

S3

S2

fO

SCALING

(divide-by)

L

L

H

H

L

H

L

H

1

2

10

100

Power Down

TSL230, TSL230A, TSL230B

PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS

SOES007B – OCTOBER 1992 – REVISED MARCH 1994

5–4

POST OFFICE BOX 655303

Terminal Functions

Selectable Options

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

GND

4

Ground

OE

3

I

Enable for fO (active low)

OUT

6

O

Scaled-frequency (fO) output

S0, S1

1, 2

I

Sensitivity-select inputs

S2, S3

7, 8

I

fO scaling-select inputs

VDD

5

Supply voltage

functional block diagram

Light

Current-to-Frequency

Converter

Photodiode

S0

S1

S2

S3

OE

Output

6.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–25

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

– 25

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to GND.

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VDD

2.7

5

6

V

High-level input voltage, VIH

VDD = 4.5 V to 5.5 V

2

VDD

V

Low-level input voltage, VIL

VDD = 4.5 V to 5.5 V

0

0.8

V

Operating free-air temperature range, TA

–25

70

°C