AK8443 Datasheet, PDF (22/29 Pages) Asahi Kasei Microsystems – 16bit 30MSPS video ADC with CCD/CIS interface

[AK8443]
Offset setting （Address “01H”～ “03H”）
Reset 0000 0000
01H CCDIN0 offset setting
02H CCDIN1 offset setting
03H CCDIN2 offset setting
OFF*[7:0]
Offset
Normal range
0111 1111
＋321.0mV
0111 1110
＋318.5mV
・・・
・・・
0000 0001
＋2．5mV
0000 0000
0
1111 1111
－2．5mV
・・・
・・・
1000 0001
－321.0mV
1000 0000
－323.5mV
Note1) At an offset of +2.5 mV, the signal fraction is corrected toward 2.5 mV subtraction.
Note2) The value for the normal range input.
By large range, 1.093 times x normal range.
By DC direct mode, 0.956 times x normal range.
Gain setting （Address “04H”～ “06H”）
Reset *000 0000
04H CCDIN0 gain setting
05H CCDIN1 gain setting
06H CCDIN2 gain setting
GAIN*
gain
000 0000
0
000 0001
0．06 ｄＢ
000 0010
0．13 ｄＢ
・・・
・・・
111 1110
20．58 ｄＢ
111 1111
21．28 ｄＢ
Note) Gain is expressed by the following equations.
This value is relative gain from “000 0000” setting
Vout = ²⁰⁴ ×Vin
12 + (127 − x)
（ x = 0 ～ 127） Input range＝1．764V
Vout =
168
× Vin
12 + (127 − x)
（ x = 0 ～ 127） Input range＝2．341V
MS1280-E-00
22
2011/8