PI6049A Data Sheet
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Definitions of Electro-Optical Specifications
All electrical specifications are measured at a pixel rate of 2.0 MHz, a temperature of 25oC, Vdd=5.0 volts, and at
an integration time of 2.2ms. 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
1KΩ<RL<10kΩ. All measurements were taken with a 2k ohm load on the output.
1. Sensitivity (Sv) is defined as the slope of the Vpavg vs Exposure curve.
2. 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 VR and in a typical CIS module
application, sits at approximately 0.7V.
3. Photo-Response Non-Uniformity (Up).
Up = ((Vpmax-Vpavg)/Vpavg) x 100% or ((Vpavg-Vpmin)/Vpavg) x 100%, whichever is the greater, 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.
4. Adjacent Photo-Response Non-Uniformity (Upn).
Upn = Max ((Vpn – Vpn+1) / Min (Vpn, Vpn+1)) x 100%, where Vpn is the pixel output voltage of pixel n in the
light.
5. 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 VR and in a typical CIS module application, sits at approximately 0.7V.
6. 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.
7. Random Thermal Noise (rms), (Vno), is the standard deviation of n pixels in the dark. A sample size n=64
was used. A 4 mV rms value has a peak-peak equivalent of 24 mV.
8. 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.
9. 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 operating close to non-linearity.
Page 7 of 13, Revised 2-13-04
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