TSL1402R

256 × 1 LINEAR SENSOR ARRAY WITH HOLD

TAOS041 – AUGUST 2002

3

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LUMENOLOGY

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Copyright

E 2002, TAOS Inc.

www.taosinc.com

AO is an op amp-type output that does not require an external pull-down resistor. This design allows a rail-to-rail

for saturation light level.

When the device is not in the output phase, AO is in a high-impedance state.

The voltage developed at analog output (AO) is given by:

where:

is the analog output voltage for white condition

is the analog output voltage for dark condition

is the device responsivity for a given wavelength of light given in V/(

is the incident irradiance in

is integration time in seconds

The TSL1402R can be connected in the serial mode, where it takes 256 clocks to read out all pixels, or in the

parallel mode where it takes 128 clocks to read out all pixels (see

APPLICATION INFORMATION and FIgures

9 and 10).

A 0.1