TSL230AR-LF TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS], TSL230AR-LF Datasheet

TSL230AR-LF

Manufacturer Part Number

TSL230AR-LF

Description

PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS

Manufacturer

TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]

Datasheet

1.TSL230AR-LF.pdf (8 pages)

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Description

Functional Block Diagram

The LUMENOLOGY r Company

The TSL230R−LF, TSL230AR−LF, and TSL230BR−LF 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. Device sensitivity 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% (TSL230BR−LF), ± 10%

(TSL230AR−LF), or ± 20% (TSL230R−LF). They have been temperature compensated for the

ultraviolet-to-visible light range of 320 nm to 700 nm and respond over the light range of 320 nm to 1050 nm.

The devices are characterized over the temperature range of −25°C to 70°C.

High-Resolution Conversion of Light

Intensity to Frequency With No External

Components

Programmable Sensitivity and Full-Scale

Output Frequency

Communicates Directly With a Microcontroller

Single-Supply Operation Down to 2.7 V,

With Power-Down Feature

Absolute Output Frequency Tolerance of

±5% (TSL230BR−LF)

Nonlinearity Error Typically 0.2% at 100 kHz

Stable 150 ppm/°C Temperature Coefficient

Replacements for TSL230, TSL230R,

TSL230A, TSL230AR, TSL230B and

TSL230BR

RoHS Compliant

Light

Texas Advanced Optoelectronic Solutions Inc.

1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759

Photodiode Array

PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS

www.taosinc.com

Current-to-Frequency

TSL230R−LF, TSL230AR−LF, TSL230BR−LF

Converter

GND 4

OE 3

S0 1

S1 2

Output

DIP PACKAGE

(TOP VIEW)

TAOS079A − OCTOBER 2006

8 S3

7 S2

6 OUT

5 V

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