STAR1000
Document Number: 38-05714 Rev. *B
Page 14 of 21
34
GNDA
Ground
Analog ground of image core.
35
GNDD
Ground
Digital ground of image core.
36
NBIAS_ARRAY
Input
Analog input. Biasing of the pixel array. Connect with 1M
Ω to VDDA and
decouple with 100 nF capacitor to GND.
37
TESTPIX_OUT
Output
Output of single test pixel. Is used for electro-optical evaluation.
38
TESTPIX_RESET
Input
Digital input (active high). Reset signal of single test pixel. Used to reset
the single test pixel during electro-optical evaluation.
39
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40
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41
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42
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43
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44
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45
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46
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48
TESTPIXARRAY
Output
Analog output of an array of 20 x 35 test pixels where all photodiodes are
connected in parallel. Is used for electro-optical evaluation.
49
PHOTODIODE
Output
Plain Photo Diode (without circuitry). Area of the photodiode = 20 x 35
pixels. Is used for electro-optical evaluation.
50
NBIAS_ANA
Input
Analog input. Analog biasing of the ADC circuitry. Connect with 100 k
Ω to
VDDA and decouple with 100 nF to GND.
51
NBIAS_ANA2
Input
52
IN_ADC
Input
Analog input of the internal ADC. Connect to analog output of image
sensor (pin 30).
Input range (typically 2V and 4V) of the internal ADC is set between by
VLOW_ADC (pin 55) and VHIGH_ADC (pin 62).
53
VDD_ADC_ANA
Supply
Analog power supply of the ADC (typical 5V).
54
GND_ADC_ANA
Ground
Analog ground of the ADC.
55
VLOW_ADC
Input
Low reference voltage of internal ADC. Nominal input range of the ADC
is between 2V and 4V. The resistance between VLOW_ADC and
VHIGH_ADC is approximately 1.5 k
Ω. Connect with 1k 5Ω to GND and
decouple with 100 nF to GND.
56
n.c.
57
PBIASDIG2
Input
Connect with 20K to GND and decouple with 100 nF to VDDA.
58
BITINVERT
Input
Digital input. Inversion of the ADC output bits. 0 = invert output bits (0 =>
black, 1023; white, 0), 1 = no inversion of output bits (black, 0; white, 1023).
59
TRI_ADC
Input
Digital input. Tri-state control of digital ADC outputs (1 = tri-state, 0 =
normal mode).
60
D0
Input
ADC output bits.#D0 = LSB, D9=MSB.
61
CLK
Input
Digital input. ADC clock. ADC converts on falling edge.
Table 8. Pin List of the STAR1000 Sensor (continued)
Pin
Pin Name
Pin Type
Pin Description
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