TSL2563CS datasheet(23/38 Pages) TAOS

23 / 38 page

TSL2562, TSL2563

LOW-VOLTAGE

LIGHT-TO-DIGITAL CONVERTER

TAOS066J − MAY 2007

The LUMENOLOGY r Company

www.taosinc.com

//****************************************************************************

E 2004−2005 TAOS, Inc.

THIS CODE AND INFORMATION IS PROVIDED ”AS IS” WITHOUT WARRANTY OF ANY

KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR

PURPOSE.

Module Name:

lux.cpp

//****************************************************************************

#define LUX_SCALE

// scale by 2^14

#define RATIO_SCALE 9

// scale ratio by 2^9

//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

// Integration time scaling factors

//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

#define CH_SCALE

// scale channel values by 2^10

#define CHSCALE_TINT0

0x7517 // 322/11 * 2^CH_SCALE

#define CHSCALE_TINT1

0x0fe7 // 322/81 * 2^CH_SCALE

//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

// T Package coefficients

//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

// For Ch1/Ch0=0.00 to 0.50

Lux/Ch0=0.0304−0.062*((Ch1/Ch0)^1.4)

piecewise approximation

For Ch1/Ch0=0.00 to 0.125:

Lux/Ch0=0.0304−0.0272*(Ch1/Ch0)

For Ch1/Ch0=0.125 to 0.250:

Lux/Ch0=0.0325−0.0440*(Ch1/Ch0)

For Ch1/Ch0=0.250 to 0.375:

Lux/Ch0=0.0351−0.0544*(Ch1/Ch0)

For Ch1/Ch0=0.375 to 0.50:

Lux/Ch0=0.0381−0.0624*(Ch1/Ch0)

// For Ch1/Ch0=0.50 to 0.61:

Lux/Ch0=0.0224−0.031*(Ch1/Ch0)

// For Ch1/Ch0=0.61 to 0.80:

Lux/Ch0=0.0128−0.0153*(Ch1/Ch0)

// For Ch1/Ch0=0.80 to 1.30:

Lux/Ch0=0.00146−0.00112*(Ch1/Ch0)

// For Ch1/Ch0>1.3:

Lux/Ch0=0

//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

#define K1T

0x0040

// 0.125 * 2^RATIO_SCALE

#define B1T

0x01f2

// 0.0304 * 2^LUX_SCALE

#define M1T

0x01be

// 0.0272 * 2^LUX_SCALE

#define K2T

0x0080

// 0.250 * 2^RATIO_SCALE

TSL2563CS Datasheet(PDF) 23 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

TSL2563CS Datasheet(HTML) 23 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

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