Ver1.0
1
A1 PROs
A1 PROs
FEATURES
ㆍOperating
voltage : 2.7V ~ 3.6V
ㆍLow
power consumption : 70mW (Typ.)
ㆍPower
down mode : less than 30μW
ㆍAccepts
a direct signal input to ADC or PGA at
1.0 V
PP
(Typ.)
ㆍCCD
signal input level : 1.1 V
P-P
(Max.)
ㆍ10-bit
ADC (up to 20MHz)
- DNL :
±0.6
LSB (Typ.)
ㆍBlack
level neutralizer, target setting : 16~127 LSB
ㆍBuilt-in
serial interface
A
i
4100
CCD CDS/PGA/10b-20M-ADC
ㆍIndependent
ADC input conversion clock and data
output clock
ㆍIndependent
CDS and PGA gain control
- CDS : -1.94/ 0/ 6/ 12dB
- PGA : 0~24dB
ㆍWide
gain range : -1.94 ~ 36dB
ㆍHigh
speed sample and hold circuit : pulse width
11ns (Min.)
ㆍ48-pin
LQFP package
GENERAL DESCRIPTION
The Ai4100 is a CMOS single-chip signal processing
devices for CCD area sensors. It consists of a clamp
circuit, Correlated Double Sampler (CDS),
Programmable Gain Amplifier (PGA), reference
voltage generator, black level detection circuit,
voltage generator, black level detection circuit,
20MHz 10-bit A/D converter (ADC), timing generator
for internally required pulses and serial interface for
internal function control and PGA gain control.
BLOCK DIAGRAM
OBP
ADCLK
BLK
CLPCAP
DC Clamp
CCDCLP
REFIN
CCDIN
CCD
ADIN
OBCAP
OBP
DAC
Compare
Black Level
Register
ADCLP
-1.94/0/6/12dB
0~6dB
0/6/12/18dB (0.047dB/Step)
ADCLP/CCDCLP CSN SCK SDATA
MONOUT
Timing
Generator
Serial
Register
BandGap
Circuit
VRP
VCOM
VRN
CDS
PGA
Rough
PGA
Fine
10-Bit
ADC
DO0~DO9
V
DD
V
SS
RESET STBY SHP SHD
OUTCK
1
A1PROS [ A1 PROS CO., LTD. ]
