A new photo IC diode, the S11154-01CT, whose spectral response
characteristic closely resembles that of the human eye, has been introduced
by Hamamatsu Photonics.
The new sensor employs two active elements formed on the same chip, whose
outputs are subtracted from each other by the current amplifier circuit.
This enables the sensor's response to be narrowed to the visible range
whilst also reducing colour temperature errors.
The S11154-01CT features a lower output-current variation than typical
phototransistors, whilst also exhibiting a low output deviation when
different colour temperature sources are used. The device also has
'excellent' linearity characteristics and is suitable for lead-free reflow
soldering. It targets a range of light-level measurement applications, and
is particularly suitable as an energy-saving sensor for large TVs and
displays, says the company.
