PC404A-2014 TAOS, PC404A-2014 Datasheet - Page 2

• Manufacturer Part Number: PC404A-2014
• Description: Optical Sensor Development Tools Evaluation Module TSL2014
• Manufacturer: TAOS

Specifications of PC404A-2014

• Operating Voltage: 5 V
• Description/function: Linear Sensor Array
• For Use With/related Products: TSL2014
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

be selected from 2 MHz, 1 MHz and 500 kHz by moving the clock select jumper to the desired
position (see Figure 1). U10, U11, and U12 generate the serial input (SI) pulse with the proper
relationship to the clock (see Figure 2). The sensor integration time, defined by the time
between SI clock pulses, may be selected from 128uS to 64mS by placing the jumper at the
appropriate location.
The analog output (AO) pin of the linear array is routed to the AO test terminal on the right side
of the board, as are SI, clock (CLK), and serial out (SO) signals. The SO signal is generated by
the linear array device (applies to TSL202, TSL208, TSL1402, TSL1406, and TSL1410 only).
A supply terminal (DVdd) and 2 GND terminals are provided for applying +5 volts and
common ground. Power may be applied through terminal block JP28 if desired.
The analog output voltage is directly proportional to the light intensity and the integration time
up to the devices saturation level (3.5V typ). The proportionality constant is the responsivity of
2
the device given in (V*cm
/uW*sec). Responsivity is wavelength dependent. For the linear
arrays the responsivity will peak at about 770nm.
0
1
2
128
129
CLK
SI
1
2
128
AO
Figure 2 - System Timing (AO output for TSL1401 shown)
3. Operation
To operate the PC404A, apply 5VDC to the board using a regulated lab power supply. Connect
an oscilloscope probe to the Ao terminal and the scope ground to one of the GND terminals.
For best results, connect another probe to the SI terminal and use that signal to trigger the
oscilloscope.