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AN202

ETC
Part Number AN202
Manufacturer ETC
Description Testing and specifying FAST logic
Published Mar 26, 2005
Detailed Description AN2018S Correlated Double Sampling IC s Overview The AN2018S is used to reduce noise in CCD image sensor output signal. ...
Datasheet PDF File AN202 PDF File

AN202
AN202

Overview
AN2018S Correlated Double Sampling IC s Overview The AN2018S is used to reduce noise in CCD image sensor output signal.
It performs correlated doublesampling on image signal sent from a CCD sensor to output clearer image signal.
0.
4 0.
4±0.
25 5.
0±0.
3 0.
3 4.
2±0.
3 6.
5±0.
3 8-Pin SOP Package (SOP008-P-0225) Unit:mm 0.
1±0.
1 1.
27 • Operating on low voltage (V CC=4.
8V), consuming little current (ICC =12.
7mA typ.
) • Including a high-speed sampling circuit responding to 510-830H CCD • 6dB or 9dB fixed gain • 83-dB high S/N-ratio (at 6dB output) p s Pin Descriptions Pin No.
1 2 3 4 5 6 7 8 Pin name CDS output (9dB) Blanking pulse input CCD signal input VCC Sampling pulse input (2) Sampling pulse input (1) GND CDS output (6dB) s Block Diagram 6dB OUT 8 GND 7 SP1 6 SP2 5 + 6dB + 9dB – – BLK S/H BIAS 50kΩ S/H 1 2 3 4 9dB OUT BLK SIG.
IN VCC 0.
15 0.
65 s Features 1.
5±0.
2 s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Note 1) Storage temperature Note 1) Symbol VCC ICC Rating 5.
5 18 99 –20 to +70 –55 to +125 Unit V mA mW ˚C ˚C PD Topr Tstg Note 1) Ta=25˚C except operating ambient temperature and storage temperature.
sRecommended Operating Range (Ta=25˚C) Parameter Operating supply voltage range Symbol VCC Range 4.
5V to 5.
1V s Electrical Characteristics (VCC=4.
8V, Ta=25±2˚C) Parameter Supply current Terminal voltage pin (3) Terminal voltage pin (8) Terminal voltage pin (1) 6dB amp.
gain 9dB amp.
gain AMP frequency characteristics * AMP common mode rejection ratio * Sampling pulse threshold (1) Sampling pulse threshold (2) Blanking pulse high level Symbol ICC V3 V8 V1 G1 G2 fC CMR VTH1 VTH2 VTHB VCC=4.
8V VCC=4.
8V Pint, y=4.
8V VCC=4.
8V Pint, y=4.
8V VCC=4.
8V Pint, y=4.
8V Input level=300mVP–P Input level=300mVP–P VCC=4.
8V V3=100mVP–P 10MHz VCC=4.
8V V3=100mVP–P 10MHz VCC=4.
8V VCC=4.
8V VCC=4.
8V V3=300mVP–P 0.
8 0.
8 3.
5 Condition min 9.
2 2.
48 1.
30 1.
25 5.
0 7.
8 typ 12.
7 2.
63 1.
60 1.
55 6.
0 9.
0 –3.
...


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