AI4100 Datasheet, PDF (1/18 Pages) A1 PROs co., Ltd. – CCD CDS/PGA/10b-20M-ADC

1 A1 PROs
A1 PROs
Ver1.0
Ai4100
CCD CDS/PGA/10b-20M-ADC
FEATURES
ǁOperating voltage : 2.7V ~ 3.6V
ǁLow power consumption : 70mW (Typ.)
ǁPower down mode : less than 30ǺW
ǁAccepts a direct signal input to ADC or PGA at
1.0 V_PP (Typ.)
ǁCCD signal input level : 1.1 V_P-P (Max.)
ǁ10-bit ADC (up to 20MHz)
- DNL : ‚0.6 LSB (Typ.)
ǁBlack level neutralizer, target setting : 16~127 LSB
ǁBuilt-in serial interface
ǁIndependent ADC input conversion clock and data
output clock
ǁIndependent CDS and PGA gain control
- CDS : -1.94/ 0/ 6/ 12dB
- PGA : 0~24dB
ǁWide gain range : -1.94 ~ 36dB
ǁHigh speed sample and hold circuit : pulse width
11ns (Min.)
ǁ48-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 ADCLP/CCDCLP CSN SCK SDATA
ADCLK
BLK
Timing
Generator
CLPCAP
DC Clamp
Serial
Register
MONOUT
BandGap
Circuit
REFIN
CCDIN
CCD
ADCLP
ADIN
OBCAP
CCDCLP
CDS
-1.94/0/6/12dB
PGA PGA
Rough Fine
0~6dB
0/6/12/18dB (0.047dB/Step)
10-Bit
ADC
DAC
OBP
Compare
Black Level
Register
V_DD V_SS
RESET STBY SHP SHD OUTCK
VRP
VCOM
VRN
DO0~DO9
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