TSL230 Datasheet, PDF (1/7 Pages) Texas Instruments – PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS

TSL230, TSL230A, TSL230B
PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS
• High-Resolution Conversion of Light
Intensity to Frequency With No External
Components
• Programmable Sensitivity and Full-Scale
Output Frequency
• Communicates Directly With a
Microcontroller
SOES007B – OCTOBER 1992 – REVISED MARCH 1994
• Single-Supply Operation Down to 2.7 V,
With Power-Down Feature
• Absolute Output Frequency Tolerance of
± 5% (TSL230B)
• Nonlinearity Error Typically 0.2% at 100 kHz
• Stable 100 ppm/°C Temperature Coefficient
• Advanced LinCMOS™ Technology
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
photodiode area is typically 1.36 mm² (0.0029 in²) (S0 = S1 = H).
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
S0
S1
OE
GND
VCC
OUT
S2
S3
8,26 (0.325)
7,62 (0.300)
10,92 (0.430)
9,40 (0.370)
8
5
(Center of active
CL
area coincides with
package center.)
1,91 (0.075)
1,02 (0.040)
6,60 (0.260)
6,10 (0.240)
15° TYP
0,76 (0.030) D NOM
1
1,65 (0.065)
1,14 (0.045)
5,08 (0.200)
3,94 (0.155)
4
0,51 (0.020) R NOM
4 Places
7° MAX TYP
1,91 (0.075)
1,02 (0.040)
0,51 (0.020)
R MAX
4 Places
105°
90°
8 Places
7,62 (0.300) TP*
Seating Plane
0,30 (0.012)
0,20 (0.008)
1,27 (0.050)
0,51 (0.020)
1,52 (0.060)
0,38 (0.015)
1,65 (0.065)
1,14 (0.045)
3,81 (0.150)
3,18 (0.125)
0,56 (0.022)
0,36 (0.014)
2,54 (0.100) TP*
*True position when unit is installed.
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
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.
Copyright © 1994, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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