Characterization results DR-8k-3.5 digital highspeed linescan sensor according to EMVA1288 Standard Revision 2. www.standard1288.org Revision 1. AWAIBA Lda Maderia Tecnopolo 92-15 Funchal Portugal
Introduction In the following characterization data according the EMVA1288 Standard for the DR- 8k-3.5 digital line scan sensor is given. The presented data is from a random picked single sample. Besides the data according EMVA1288 further data is presented, namely the temporal noise using off chip correction of the pixel value by the average of the dark pixels implemented on chip, which brings a significant improvement of temporal noise. The respective parameters are named lincorr. It is strongly recommended that the user of the sensor implements this correction, however as it is not implemented on chip this possible improvement is not taken in account for computation of the EMVA1288 data. General Information: Vendor Name AWAIBA Lda Model Name DR-8k-3.5 Sensor Type CMOS Digital Line Scan Sensor Sensor diagonal in mm 28.67mm Indication lens category (inch) -- Resolution ( width x height) 8192 x 1 Pixel size 3.5um x 3.5um Readout type 8 Tap 4MHz 12bit parallel Shutter type ( Rolling/ Global) Global Shutter Overlap capabilities (Integration overlaps Interleaved integration & Readout Readout) Maximum frame rate at given operation 9765 lines / second point Type of presented data (typical typical /guaranteed/ guaranteed over live time) Definition of "typical" (number of samples 1 random sample etc..) Other relevant information (interface type 12 bit digital parallel etc...)
Description of operation point The following settings are common to all operating points presented: Main Clock Frequency 4MHz Line Period 435 us ADC End Range x8 -> 496 DN Illumination Wavelength 625nm On chip ADC offset subtraction Enabled Config. Register 1* 111 Config. Register 2* 1 Inverse ADC Gain 4k left x1h ADC Offset 4k left x1eh Inverse ADC Gain 4k right x1h ADC Offset 4k right x17h Inverse ADC Gain 8k left x14 ADC Offset 8k left x5bh Inverse ADC Gain 8k right x15h ADC Offset 8k right x69h Using these settings, several combinations of analogue gain and ADC gain are used and presented in the following table.
Numerical data at given operating point Operation Point Inv. ADC Gain (ADC step) Analogue Gain A x1 X1 Conversion Gain [DN/e-].1399 QE* 62.7% Saturation capacity [e-] 26 279 Responsivity [DN/nJ/cm2]** 33.6 Temporal dark noise [DN] 3.1 Temporal dark noise [e-] 22.9 Absolute sensitivity threshold [p/pix] 36.9 Temporal dark noise lincor [DN]** 1.7 Temporal dark noise lincor [e-]** 11.8 Absolute sensitivity threshold lincor [p/pix]** 19.1 SNR emva1288 167 SNR emva1288[db] 44.4 DYN (standard SNR) 1146 DYN [db] (standard SNR in db) 61.2 DSNU 1288 [e-] 25.1 DSNU [DN] (standard deviation of mean dark image)** 3.6 PRNU 1288 1.3% Dark Current 3C [e-/ms] 1.2 Dark current doubling temperature [C] 11.5 **Additional information parameters not comprised in EMVA1288 Standard
Graphical data for operation point A A Inverse ADC Gain (ADC step) x1 Analogue Gain x1 Photoresponse Plot Integration Time [s].e+ 1.E- 2.E- 3.E- 4.E- 4.5E+3 4.E+3 3.5E+3 DN [12b] 3.E+3 2.5E+3 2.E+3 1.5E+3 1.E+3 5.E+2.E+.E+ 1.E+ 2.E+ 3.E+ 4.E+ Nbr Photons Dark Signal Bright Signal Dark corr Signal Variance Plot Integration Time [s].e+ 1.E- 2.E- 3.E- 4.E- 6.E+2 Varaince [DN² / 12bit] 5.E+2 4.E+2 3.E+2 2.E+2 Dark Variance Bright Variance Dark corr Variance 1.E+2.E+.E+ 1.E+ 2.E+ 3.E+ 4.E+ Nbr Photons
Photon Transfer Plot 6 Varaince [DN² / 12bit] 5 4 3 2 1 Dark corr Variance Linear Fit 5 1 15 2 25 3 35 4 45 Dark corr Signal [DN] Spectrogram Plot 6.E+1 Dark corr Std Spatial Noise [DN] 5.E+1 4.E+1 3.E+1 2.E+1 1.E+1 Dark corr Spatial Variance Fit.E+ 5 1 15 2 25 3 35 4 Image Mean [DN]
4.5 Spectrogram Plot Spatial Dark Noise Std. Spatial dark Noise [DN] 4 3.5 3 2.5 2 1.5 1.5 Std Spat Dark Temporal dark Noise.E+ 5.E- 5 1.E- 1.5E- 2.E- 2.5E- 3.E- 3.5E- 4.E- 4.5E- Tint [s] Spectrogram Non Whiteness coeffycients Nonwhiteness coeffycient 9 8 7 6 5 4 3 2 1 F total Dark F Spatial Dark F Total F Spatial.E+ 5.E- 5 1.E- 1.5E- 2.E- 2.5E- 3.E- 3.5E- 4.E- 4.5E- Tint [s]
Spectrogram Total Noise in DN 12 bit Amplitude Spectrum [DN] 1 9 8 7 6 5 4 3 2 1 Amplitude Dark Total [DN] Amplitude 1 Total [DN] Amplitude 2 Total [DN] 1 2 3 4 5 6 7 8 Spatial Frequency [1/pixel] Spectrogram Total Noise in Photons 12 1 Amplitude Spectrum [p] 8 6 4 Amplitude 2 Total [p] Amplitude Dark Total [p] Amplitude 1 Total [p] 2 1 2 3 4 5 6 7 8 Spatial Frequency [1/pixel]
Spectrogram Total Noise in DN 12 bit zoom 25 Amplitude Spectrum [DN] 2 15 1 5 Amplitude Dark Total [DN] 1 2 3 4 5 6 7 8 Spatial Frequency [1/pixel] Spectrogram Total Noise in Photons zoom Amplitude Spectrum [p] 5 45 4 35 3 25 2 15 1 5 Amplitude 2 Total [p] Amplitude Dark Total [p] Amplitude 1 Total [p] 1 2 3 4 5 6 7 8 Spatial Frequency [1/pixel]
Spectrogram Spatial Noise in DN 12 bit Amplitude Spectrum [DN] 1 9 8 7 6 5 4 3 2 1 Amplitude Dark Spatial [DN] Amplitude 1 Spatial [DN] Amplitude 2 Spatial [DN] 1 2 3 4 5 6 7 8 Spetial Frequency [1/pixel] Spectrogram Spatial Noise in photons 12 Amplitude Spectrum [p] 1 8 6 4 2 Amplitude Dark Spatial [p] Amplitude 1 Spatial [p] Amplitude 2 Spatial [p] 1 2 3 4 5 6 7 8 Spetial Frequency [1/pixel]
Spectrogram Spatial Noise in DN 12 bit zoom 25 Amplitude Spectrum [DN] 2 15 1 5 Amplitude Dark Spatial [DN] 1 2 3 4 5 6 7 8 Spetial Frequency [1/pixel] Spectrogram Spatial Noise in photons zoom 5 45 Amplitude Spectrum [p] 4 35 3 25 2 15 1 Amplitude Dark Spatial [p] Amplitude 1 Spatial [p] Amplitude 2 Spatial [p] 5 1 2 3 4 5 6 7 8 9 Spetial Frequency [1/pixel]
Total Quantum efficiency according photon transfer method at operation point A Total QE DR-8k-3.5 9.% 8.% 7.% QE e-/ph [%] 6.% 5.% 4.% 3.% 2.% 1.%.% 35 45 55 65 75 85 95 Wavelength [nm] Temperature dependence of dark current Dark Current DR-8k-3.5 1 Dark current [e-/ms] 1 1 3. 32. 34. 36. 38. 4. Die Temperature [K]