AMIS-710616 Datasheet, PDF (3/19 Pages) AMI SEMICONDUCTOR – CIS PCB

AMIS-710616-AS: CIS PCB
Product Specification
Data Sheet
6.0 Electro-Optical Characteristics (25^°C)
Table 6-1: Electro-Optical Characteristics at 25^°C
Parameter
Symbol
Parameter
Units
Note
Number of active photo detectors
7680
Elements
Pixel-to-pixel spacing
43.25
µm
Line scanning rate
Tint ⁽¹⁾
@ 5.0MHz clock
192
µs/line
frequency
(see Note 1)
Clock frequency
Freq ⁽²⁾
Maximum clock
6.0
MHz
frequency
(see Note 2)
Red responsivity
ExpR⁽³⁾
70
V/µJ/cm2
See Note 3 for
definition
Green responsivity
ExpG⁽³⁾
55
V/µJ/cm2
See Note 3 for
definition
Blue responsivity
Bright output voltage
ExpB⁽³⁾
Vpavg ⁽⁴⁾
35
V/µJ/cm2
See Note 3 for
definition
3.0
V
Green light
Depends on
Bright output non-uniformity
Up (5)
<7
%
optical system
Adjacent pixel non-uniformity
Uadj ⁽⁶⁾
(see Note 5)
<10
%
Bright output
Non-uniformity total
Dark non-uniformity
Dark video offset
Uptotal ⁽⁷⁾
Ud ⁽⁸⁾
Vd ⁽⁹⁾
Depends on the
<10
%
optical system
(see Note 5)
<25
mV
-2.0
Volts
Random noise
RNL ⁽¹⁰⁾
<11.8
<3.0
p-p mV
rms mV
Modulation transfer function
MTF ⁽¹¹⁾
>70
%
Sensor only
(see Note 11)
Notes:
Since this is a prototype module, the following Notes 4, 5, 6, 7, and 8, are on data based on engineering scope measurements. The data will be re-measured during pilot
production using all the standard QA practices under the control of ISO 9000 regulations. Furthermore, they will be taken on fully computerized test systems. If required,
these prototype data may be revised.
(1) Tint is the line-scan rate or integration time. It is determined by the time interval between two SPs. If the SP is generated from a clock count down circuit, it will
be directly proportional to clock frequency and it will be synchronous with the clock frequency. The longest integration time is determined by the degree of
leakage current degradation that can be tolerated by the system. A 10ms maximum is a typical rule-of-thumb. An experienced CIS user can use his discretion
to determine the desired tolerance level for the given system.
(2) Freq is the clock frequency, which is also equal to the signal data rate. It is generally fixed for many applications for following reasons: One is the exposure
time. With a given light power, the exposure time of the sensor depends on the integration time and in most applications it uses clock count down circuits to
generate the SP, shift register start pulse. The second is the shape of the video output pulse. Because the output is in pulse packets of video charges, the
signals are processed on the output video line of the sensors. The signal shape depends greatly upon the amplifier configurations. Please refer to the
referenced AMIS-720639 data sheet. It has some brief outline application notes. Under Note 6 on Page 6, there is a discussion on video pulse shapes. On
Page 8, 9 and 10 there are discussions on the three types of signal output stages.
(3) The responsivity is the ratio of video signal in volts, divided by the unit exposure (V/micro-Joules/cm ²). This exposure was measured with the output level
adjusted to 1.27V. The spread of the measured exposure R-RSP, G-RSP and B-RSP can be used to compute the user’s desired signal voltage level.
(4) Vpmax = maximum pixel value of Vp(n); Vpmin = minimum pixel value of Vp(n); Vpavg = ∑ Vp(n)/7680; where Vp(n) is the n^th pixel in a line scan with the
module scanning a uniform white target. Vp values are measured with a uniform exposure.
(5) Bright output Non-uniformity: Up(+) = [(Vpmax - Vpavg) / Vpavg] x 100% or Up(-)= [(Vpavg - Vpmin) / Vpavg] x 100%, whichever polarity with the highest value
is selected. Two further notes: One is that the AMIS-710616-AS has no requirement for an optical system, or a light system. The second is that the non-
uniformity is dominated by the LED light bar’s non-uniformity so only the sensor non-uniformity is specified. The normal standard CIS modules are enclosed in a
self-contained module with a complete optical and LED lighting system. So the light system, usually the LED bar, is included in making the measurement of the
optical characteristics. This fixes the optical geometry for the module and the light source. The module’s optical characteristics are simply measured with the
module placed on a uniform reflecting target with a known reflection density. However, the AMIS-710616-AS is not enclosed with its optical and light source
system. Therefore, Up is measured with uniform light source, which directly illuminates the image sensors’ photosite.
(6) Adjacent Pixel Non-uniformity: Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100%. Upadj is non-uniformity in percentage of Vpavg. It is the maximum difference
amplitude between two neighboring pixels.
(7) Bright output total non-uniformity: Uptotal = [Vpmax -Vpmin]/Vpavg
(8) Dark non-uniformity: Ud = Vdmax – Vdmin: It is measured over the full length of the array with the light source off and the sensors placed in the dark. Vdmax is
the maximum pixel value of the video pixel with the exposure off. Vdmin is the minimum pixel value of the video pixel with the exposure off. The references for
these levels are the dark level, VDL.
(9) Dark output voltage, VDL is the level between the out video pixel dark level and the ground.
(10) Random noise, RNL, is measured using two methods; one is to take the measurement tangentially on the scope. This measures an approximate peak-to-peak,
p-p, random thermal noise. The other method is in terms of rms. It is estimated by using Gaussian statistical methods. One pixel is selected out of a line scan
and its peak values are recorded for multiple line scans. These random peak values are used to estimate the rms values.
AMI Semiconductor – July 06, M-20595-001
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