TSL230, TSL230A, TSL230B

PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS

SOES007B – OCTOBER 1992 – REVISED MARCH 1994

Copyright

5–3

POST OFFICE BOX 655303

Intensity to Frequency With No External

Components

Output Frequency

Microcontroller

With Power-Down Feature

±5% (TSL230B)

description

The TSL230, TSL230A, and TSL230B programmable light-to-frequency converters combine a configurable

silicon photodiode and a current-to-frequency converter on single monolithic CMOS integrated circuits. The

output can be either a pulse train or a square wave (50% duty cycle) with frequency directly proportional to light

intensity. The sensitivity of the devices is selectable in three ranges, providing two decades of adjustment. The

full-scale output frequency can be scaled by one of four preset values. All inputs and the output are TTL

compatible, allowing direct two-way communication with a microcontroller for programming and output

interface. An output enable (OE) is provided that places the output in the high-impedance state for multiple-unit

sharing of a microcontroller input line. The devices are available with absolute-output-frequency tolerances of

±5% (TSL230B), ±10% (TSL230A), or ±20% (TSL230). Each circuit has been temperature compensated for

the ultraviolet-to-visible-light range of 300 nm to 700 nm. The devices are characterized for operation over the

temperature range of – 25

°C to 70°C.

mechanical data

The TSL230, TSL230A, and TSL230B are packaged in a clear plastic 8-pin dual-in-line package. The

Pin 1

S0

Pin 2

S1

Pin 3

OE

Pin 4

GND

Pin 5

VCC

Pin 6

OUT

Pin 7

S2

Pin 8

S3

9,40 (0.370)

10,92 (0.430)

0,51 (0.020)

1,27 (0.050)

1,14 (0.045)

1,65 (0.065)

0,36 (0.014)

0,56 (0.022)

7

90

°

105

°

Seating Plane

0,20 (0.008)

0,30 (0.012)

6,10 (0.240)

6,60 (0.260)

5

8

4

1

7,62 (0.300) TP*

15

8 Places

0,51 (0.020) R NOM

4 Places

ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES

C

L

2,54 (0.100) TP*

1,14 (0.045)

1,65 (0.065)

3,94 (0.155)

5,08 (0.200)

1,02 (0.040)

1,91 (0.075)

3,18 (0.125)

3,81 (0.150)

1,02 (0.040)

1,91 (0.075)

0,38 (0.015)

1,52 (0.060)

0,51 (0.020)

R MAX

4 Places

7,62 (0.300)

8,26 (0.325)

0,76 (0.030) D NOM

*True position when unit is installed.

(Center of active

area coincides with

package center.)

LinCMOS is a trademark of Texas Instruments Incorporated.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.