PI6050D Data Sheet

_________________________________________________________________________________________

Definitions of Electro-Optical Specifications

All electrical specifications are measured at a pixel rate of 2.5 MHz, a temperature of 25

Vref=1.7V and at an integration time of 2.2ms for 600 dpi and 4.4ms for 1200 dpi. The average output voltage

(Vpavg) is adjusted to approximately 1.0V, unless stated otherwise. The modules’ internal Green LED (525 ± 20

nm) was used as the light source for measurements requiring illumination. As a guideline, the recommended

load on the output should be 1K

Ω<RL<10kΩ. All measurements were taken with a 2k ohm load on the output.

1.

The Switch Control input (SC) is connected to Ground or to Vdd to set the sensor to operate in the 600 dpi or

1200 dpi mode, respectively. In the 1200 dpi mode, all 688 pixels are clocked out, whereas in the 600 dpi

mode, pixels 1 and 2 are combined, 3 and 4 are combined and so on up to pixels 687 and 688 being

combined. One half of the pixel amplifiers and one half of the scanning register are then disabled. As a result,

sensitivity in the 600 dpi mode will be twice that of the 1200 dpi mode. The 600 dpi readout time will be

approximately half of the 1200 dpi readout time.

2.

Sensitivity (Sv) is defined as the slope of the Vpavg vs Exposure curve.

3.

Saturation Voltage (VSat) is defined as the maximum video output voltage swing measured from the dark

level to the saturation level. It is measured by using the module LED light source with the module imaging a

uniform white target. The LED light level is increased until the output voltage no longer increases with an

increase in the LED brightness. The dark level is set by the voltage on VREF and is recommended to be set

externally to a voltage of 1.7V for optimal module operation.

4.

Photo-Response Non-Uniformity (Up+, Up-, Up_total).

Up+ = ((Vpmax-Vpavg)/Vpavg) x 100%, Up- = ((Vpavg-Vpmin)/Vpavg) x 100%, and Up_total is the absolute

value of (Up+) + (Up-), where Vpmax is the maximum pixel output voltage in the light, Vpmin is the minimum

pixel output voltage in the light and Vpavg is average output voltage of all pixels in the light.

5.

Total Photo-Response Non-Uniformity (Up_total)

6.

Adjacent Photo-Response Non-Uniformity (Upn).

Upn = ABS( Max ((Vpn – Vpn+1) / Min (Vpn, Vpn+1))) x 100%, where Vpn is the pixel output voltage of pixel

n in the light.

7.

Dark Output Voltage (Vd).

Vd is the average dark output level and is essentially the offset level of the video output in the dark. The dark

level is set by the voltage on VREF and is recommended to be set externally to a voltage of 1.7V for optimal

module operation.

8.

Dark Output Non-Uniformity (Ud).

Ud = Vdmax-Vdmin, where Vdmax is the maximum pixel output voltage in the dark and Vdmin is the

minimum pixel output voltage in the dark.

9.

Random Thermal Noise (rms), (Vno) is the standard deviation of n pixels in the dark. A sample size n = 64

was used. A 3 mV rms value has a peak-peak equivalent of 18 mV.

10. Sensor-to-Sensor Photo-Response Non-Uniformity (Usensor).

Usensor = (Vpavg – Wavg) / Wavg), where Wavg is the average output of all sensors on the same wafer

that pass all other specifications.

11. Photo-Response Linearity (PRL).

Photo-Response Linearity is defined as the max deviation of response compared to a best fit line. The data

points plotted are those that lie within 10% of the saturation level and 90% of the saturation level. Outside

these ranges the module is approaching non-linearity.

Page 7 of 15, PI6050D_rev A, Revised 1-31-05