User Guide for TAOS models including: PC404A, Evaluation Module, PC404A Evaluation Module, Module
Sensor Development Boards und Kits | Autorisierter Distributor | Arrow.de
ams AG
File Info : application/pdf, 3 Pages, 106.47KB
DocumentDocumentRev A PC404A Evaluation Module User's Guide 1. Introduction The PC404A facilitates evaluation of the TAOS analog linear sensor arrays (TSL201, TSL202, TSL208, TSL1401, TSL1402, TSL1406, TSL1410, or TSL1301) by providing the necessary timing and clock signals to support the on-board imaging device. The designer is then free to investigate the properties and performance of the device without having to design and construct support circuitry. A single 5 volt regulated power supply (and light) are the only inputs required. An oscilloscope is required for observation and analysis of the output signals. 2. Functional Description The linear sensor array support circuitry of the PC404A consists of an oscillator, a counter/divider and logic to provide the imager with the required clock and integration pulse signals for operation. The oscillator is built around a TLC555 timer. The oscillator output is inverted and fed into divider U10 to provide lower frequency options. The clock frequency may DVdd 2MHz Clock PC404A Linear Array EVM CLK 1 R23 470 DVdd U9 4 2 1 R24 220 7 DIS R Q3 6 THR 2 TR CV 5 1 U11A 1 3 2 74HC00 C14 2 TLC555 .1 1 2 U10 9 7 10 CLK 13 11 CT=0 12 14 15 74HC4040 1 2 2MHz 1 2 1MHz 1 2 500KHz Clock Select DVdd 4 U12A 2 D PR Q 5 3 CLK CL Q 6 1 74HC74 C15 180p 2 Test Points SI 1 CLK 1 TP10 SI SO2 1 TP12 CLK AO1 1 TP11 SO TP13 TP14 AO 1 GND TP15 1 GND DVdd TP16 1 DVdd DVdd VCC 1 C22 .1 1 C23 .1 1 C24 .1 DVdd U11C U13 10 9 9 8 10 CLK 7 6 5 74HC00 3 11 2 CT=0 8 Pin/16 Pin Location 74HC4040 O TSL1401 TSL213 TSL1402 Linear Array Device DVdd U14 W2 8 Pin Jumper setting 1 2 3 Jumper DVdd 1 SI 2 CLK 3 AO1 4 5 SO2 6 7 Vdd SI CLK AO1 GND SO 2 Vdd NC SO 1 GND NC SI 2 NC AO2 14 13 12 11 10 9 8 AO1 1 1 C25 1 C26 DVdd TSL1402 .1 .1 1 2 128uS 1 2 256uS 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 512uS 1mS 2mS 4mS 8mS 16mS 32mS 64mS Integration Time Control U11B 4 6 5 74HC00 SMD Bypass on Reverse Side DVdd U11D SI 11 74HC00 8 Pin Jumper setting DVdd W1 1 2 3 Jumper C16 C17 C18 C19 C20 C21 12 13 1 1 1 1 1 1 .1 .1 .1 .1 .1 .1 2 2 2 2 2 2 DVdd 1 C27 10 2 JP28 1 2 Power R25 330 Draftsman Tim Flanigan 2 2 2 2 2 2 Figure 1 - PC404A Schematic Diagram Downloaded from Arrow.com. 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 the device given in (V*cm2/uW*sec). Responsivity is wavelength dependent. For the linear arrays the responsivity will peak at about 770nm. 0 1 2 CLK 128 129 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. Downloaded from Arrow.com. Figure 3 - PC404A Silkscreen (top side) Table 1 - W1 and W2 Jumper Configuration DEVICE TSL1301 / 1401R / 201R TSL1402R / TSL202R TSL1406R / TSL1410R / TSL1412R TSL208 TSL210R TSL2014 JUMPER W1 Open 2-3 2-3 Open Open Open JUMPER W2 1-2 2-3 2-3 Open Open Open Downloaded from Arrow.com.