AN2018S

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. g...