AK8452 Datasheet, PDF (27/46 Pages) Asahi Kasei Microsystems – 2 channel-input 16 bit 10MSPS ADC

ASAHI KASEI
AKM Confidential
Offset ＤＡＣ 0 data setting (Address “0001”, reset “1000 0000”）
[AK8452]
register
DAC output
00000000
-240.0mV
00000001
-238.1mV
00000010
・
-236.2mV
・
・
・
01111110
-3.8mV
01111111
-1.9 mV
10000000
0 mV
10000001
+1.9mV
10000010
・
+3.8mV
・
・
・
11111101
+234.4mV
11111110
+236.3mV
11111111
+238.1mV
Offset(x) = −240 + 480 / 256 × x[mV] ;
x is setting value
@ reset x=128, Offset(128)=0mV
CIS signal
S/H
Black
Cal.
S/H output level
Offset DAC setting
FFh
80h
00h
PGA
After black cal.
level
Max.
Min.
ADC
Output code
The change of the level by the offset setting (DC direct mode = pos. polarity )
CDS
Black cal.
PGA
00h
80h
FFh
Offset DAC setting
ADC
Min.
Max.
CIS signal(CCD type) CDS output level After black cal. level
Output code
The change of the level by the offset setting (CDS mode = neg. polarity )
MS0955-E-00
27
2008/03