 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 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 0.40.25 5.00.3 0.3 4.20.3 6.50.3 8-Pin SOP Package (SOP008-P-0225) Unit:mm 0.10.1 1.27 * Operating on low voltage (VCC=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 50k S/H 1 2 3 4 9dB OUT BLK SIG.IN VCC 0.15 0.65 s Features 1.50.2 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=25C except operating ambient temperature and storage temperature. sRecommended Operating Range (Ta=25C) Parameter Operating supply voltage range Symbol VCC Range 4.5V to 5.1V s Electrical Characteristics (VCC=4.8V, Ta=252C) 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 -3.0 -35 1.5 1.5 2.2 2.2 max 16.2 2.78 1.90 1.85 7.0 10.2 Unit mA V V V dB dB dB dB V V V Note) The value in the above characteristics is not a guaranteed value, but reference one on design. * The characteristics are of the amplifier itself. s Pin Descriptions Pin No. Pin name DC voltage (VCC=5V) Equivalent circuit VCC (4) Description 1 9dB OUT Black level: 1.55V 8 *9-dB-amp. output CDS signal *Typical 1.55V DC output *90- output impedance GND (7) H 3.5V 50A VCC (4) 33k 2 BLK 1 50k 1k 1k 63k GND (7) L 0.5V *Blanking (Hclear) pulse input (from an AN2145 series only) *Active high *3.0V threshold voltage *50k input impedance *Grounded or left open when not used VCC (4) 75A 38k 500 200 1k 58k GND (7) 3 SIG.IN Black level: 2.6V 3 *CCD signal input *CCD signal must be input through a capacitor. *The capacitor should preferably be 0.022F. *2.6V typ. bias voltage 4 VCC 4.8V H 2.2V 300A 28k *Supply voltage VCC (4) 5 SP2 5 1k 20k *Sample-hold pulse input *Active high *1.5V threshold voltage *Sampling pulses are input in synchronization with the video timing of CCD signal at Pine. L 0.8V GND (7) H 2.2V 300A 28k VCC(4) 6 SP1 1k 6 20k *Sample-hold pulse input *Active high *1.5V threshold voltage *Sampling pulses are input in synchronization with the feed-through timing of CCD signal at Pine. L 0.8V 7 8 GND 6dB OUT Black level: 1.6V Same as for Pinq. GND (7) *Ground *6-dB-amp. output CDS signal Note) The above characteristics value, measured at VCC=5V, is not a guaranteed value, but reference one on design. |
Price & Availability of AN2018S
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |