CYIH1SM1000AA-HHCS Cypress Semiconductor Corp, CYIH1SM1000AA-HHCS Datasheet - Page 59

• Manufacturer Part Number: CYIH1SM1000AA-HHCS
• Description: IC SPACE IMAGE SENSOR 84-JLCC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYIH1SM1000AA-HHCS

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

BLACK Register:
The BLACK register sets the black level of the column amplifier
structures and column prechargers when used in NDR mode.
The reset value of BLACK is 0, setting the internal black level to
half-way full scale: BLACK range 0..127 corresponds to 1.65V to
OFFSET Register:
The column signal path and later parts of the signal path is split
in an odd bus with amplifiers and an even bus with amplifiers.
Using the OFFSET register, the offsets for these two signal paths
can be calibrated to obtain a balanced performance.
The reset value of OFFSET is 0, driving the offset generator to
half-scale (0mV) . OFFSET range 0 to 127 corresponds to 0 to
+17.5mV in steps of 140
sponds to -17.5mV to 0mV in steps of 137
Expressed in electrons, this gives the following numbers:
Total offset correction range: 2365 electrons
Step of correction: 9.3 electrons
The recommended default setting is:
OFFSET = 0 (sample depended).
It's recommended to calibrate the device while taking a dark
image.
8.2.6 Sensor Calibration
NDR Mode Black Level
BLACK=10.
Column Amplifier Offset Correction
The column amplifier structures comprise of two independent
signal buses, one handling pixels from odd columns, one
handling pixels from even columns.
ADC Serial Interface
Document Number: 001-54123 Rev. *A
A[7..0] = BLACK[7..0]
BLACK[7..0]
A[7..0] = OFFSET[7..0]
OFFSET[7..0]
OFFSET
BLACK
μ
V. OFFSET range 128 to 255 corre-
A[9..8] = “10”
A[9..8] = “11”
μ
V.
NDR mode black level
Column bus offset correction.
2.9V in steps of 10mV. BLACK range 128 to 255 corresponds to
0.4V to 1.65V in steps of 10 mV.
The recommended default setting is:
BLACK = 10
As these structures are inherently imperfectly matched in offset,
user calibration of this parameter is required when the sensor is
operated in destructive readout / double sampling mode.
The default (reset) values for this parameter puts the internal
calibration signal generators in their neutral, middle-value mode.
ADC Corrections
Concept
The ADC is a pipelined device with 11 identical conversion
stages in series. Each conversion stage is built around an
amplifier with calibratable gain. Each amplifier's gain can be
tuned individually with an 8 bit code, totaling 11 words of 8 bits
to be loaded into the ADC through a separate serial interface.
ADC Tuning Codes
Tuning codes each span the range 0 to 255, with value 127
denoting the amplifier's central gain setting (default after
power-on, i.e. without user calibration, and allowing nominal
operation of the device). Code 0 reduces the gain with 5%, tuning
code 255 increases gain with 5%. The code-gain relation is
guaranteed monotonous.
ADC Linearity Tuning Method
The ideal calibration code is 75 for each stage.
It is expected that a complete set of calibration values will be
provided in the sensor datasheet, or when necessary, with each
device individually.
LD_REG
LD_REG
CYIH1SM1000AA-HHCS
Page 59 of 71
[+] Feedback