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Teilenummer | M206-A6M |
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Beschreibung | Contact Image Sensor Module | |
Hersteller | CMOS Sensor | |
Logo | ã | |
Gesamt 15 Seiten Contact Image Sensor (CIS) Module
Product Name
M206-A6M
Approval
Notes
CMOS Sensor Inc.
20045, Stevens Creek Blvd.,
Suite 1A
Cupertino, CA., 95014
Tel: (408) 366-2898
Fax: (408) 366-2841
Approved Checked Designed
Sam Lin
Chang Lin
Xiao
Issued
July 1, 2005
Revision no.
All specifications of this device are subject to change without notice.
20045 Stevens Creek Blvd., Suite 1A, Cupertino, CA., 95014
Tel: (408) 366-2898, Fax: (408) 366-2698
TERMS AND DEFENITIONS
The parameters of the test conditions in Table 2 are defined as:
1 Tint is the integration time or line scanning time. Tint is determined by the interval
between two start pulses (SP).
2. Vpc(n) is the effective output signal of every pixel and is defined by:
Vpc(n) = Vp(n) âVd(n)
Vp(n) is the output signal of the nth pixel using a white image target with 0.05
Optical Density (OD).
Vd(n) is the output signal of the nth pixel in the black target.
. Dark output is obtained at black target by turning on the LED.
Vpcavg is defined by
m
Vpcavg = ? [Vpc(n)];
n=1
Where n = 1, 2, ..., m;
3. Upc is the white output non- uniformity with dark signal subtracted and is defined
by:
Upc = ((Vpcmax â Vpcmin) / (Vpcmax)) x 100%
Vpcmax = MAX[Vpc(n)]; is the maximum effective output signal
Vpcmin = MIN[Vpc(n)]; is the minimum effective output signal
Where n = 1, 2, ..., m
4. Vdmin is the minimum output signal in the dark and is defined by:
Vdmin = MIN [Vd(n)];
Where n = 1, 2, ..., m;
5. Ud is the dark output non- uniformity and is defined by:
Ud = Vdmax â Vdmin
Vdmax = MAX[Vd(n)]; is the maximum dark output signal
Vdmin = MIN[Vd(n)]; is the minimum dark output signal
6. Figure 4 shows a typical output response of the module using a MTF image target.
Modulation Transfer Function is defined by:
MTF = MIN{ [(Vmax - Vmin) / (Vmax+Vmin )] } x 100%
Vmax is the maximum output signal using the MTF image target with
Correspond to dark signal (Vd) subtracted
Vmin is the minimum output signal using the MTF image target
Correspond to dark signal (Vd) subtracted
MTF image target is 5.75 lp/mm
20045 Stevens Creek Blvd., Suite 1A, Cupertino, CA., 95014
Tel: (408) 366-2898, Fax: (408) 366-2698
6 Page same level. For example, The UV LED pulse is set to Tmax, and infrared and red LED pulse
width is reduced as shown in Figure 8.
D A/D interface
There are several ways for the output signal to interface with A/D converter, as illustrated
below. Method A is the simplest and Method C provides the best performance.
0.6-2.6V
Vout A/D
0.6 -2.6V
Vout VIN
A/D
0.6V
Vref OFFSET
Mothod A
RF
VCC
Vout
Vref
RI
-
+
RI
RF
VREF
Mothod C
Fiure 9. A/D interface
Mothod B
A/D
20045 Stevens Creek Blvd., Suite 1A, Cupertino, CA., 95014
Tel: (408) 366-2898, Fax: (408) 366-2698
12 Page | ||
Seiten | Gesamt 15 Seiten | |
PDF Download | [ M206-A6M Schematic.PDF ] |
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