LM9811 datasheet(7/36 Pages) NSC

7 / 36 page

Electrical Characteristics (Notes) (Continued)

Note 11: For CCDs, VBLACK is defined as the CCD OS voltage for the reference period following the reset feedthrough pulse. VWHITE is defined as the peak CCD

pixel output voltage for a white (full scale) image with respect to the reference level, VBLACK -VRFT is defined as the peak positive deviation above VBLACK of the

reset feedthrough pulse. For CIS, VWHITE is defined as the peak CCD pixel output voltage for a white (full scale) image with respect to GND (0V). The maximum

correctable range of pixel-to-pixel VWHITE variation is defined as the maximum variation in VWHITE (due to PRNU, light source intensity variation, optics, etc.) that

the LM9811 can correct for using its internal PGA.

Note 12: Integral linearity error is defined as the deviation of the analog value, expressed in LSBs, from the straight line that best fits the actual transfer function

of the ADC.

Note 13: Reference voltages below 1.19V may decrease SNR. Reference voltages above 1.26V may cause clipping errors inside the LM9811. The

LM4041EIM3-1.2 (SOT-23 package) or the LM4041EIZ-1.2 (TO-92 package) bandgap voltage references are recommended for this application.

Note 14: PGA Gain Error is the maximum difference between the measured gain for any PGA code and the ideal gain calculated by using the formula

and PGA RANGE = the PGA adjustment range (in V/V) of the LM9811 under test.

Note 15: VGA Gain Error is the maximum difference between the measured gain for any VGA code and the ideal gain calculated by using the formula

and VGA RANGE = the VGA adjustment range (in dB) of the LM9811 under test.

Note 16: ADC Characteristics (Resolution, INL and DNL) are guaranteed for fMCLK up to 12MHz. For 12MHz < fMCLK ≤ 20 MHz, all specifications are guaranteed

except ADC Characteristics, which will be approximately 8 bits.

Typical Performance Characteristics

CCD Output Signal

DS012813-5

CIS Output Signal

DS012813-6

φ1, φ2, RS, and TR Rise and Fall Times

Through a Series Resistance vs Load Capacitance

DS012813-8

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