Instruction/ maintenance manual of the product AD9843A Analog Devices
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REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
–2– REV. 0 AD9843A–SPECIFICA TIONS GENERAL SPECIFICA TIONS Parameter Min Typ Max Unit TEMPERATURE RANGE Operating –20 +85 ° C Storage –65 +150 ° C POWER SUPPLY VOLTAGE Analog, Digital, Digital Driver 2.
–3– REV. 0 AD9843A Parameter Min Typ Max Unit Notes P OWER CONSUMPTION 78 mW See TPC 1 for Power Curves MAXIMUM CLOCK RATE 20 MHz CDS Allowable CCD Reset Transient 1 500 mV See Input Waveform in Note 1 Max CCD Black Pixel Amplitude 1 200 mV Max Input Range Before Saturation 1 1.
–4– REV. 0 AD9843A–SPECIFICA TIONS AUX1-MODE SPECIFICA TIONS Parameter Min Typ Max Unit POWER CONSUMPTION 60 mW MAXIMUM CLOCK RATE 20 MHz INPUT BUFFER Gain 0d B Max Input Range 1.
AD9843A –5– REV. 0 TIMING SPECIFICA TIONS Parameter Symbol Min Typ Max Unit SAMPLE CLOCKS DATACLK, SHP, SHD Clock Period t CONV 48 50 ns DATACLK High/Low Pulsewidth t ADC 20 25 ns SHP Pulsewidth t SHP 71 2 .
AD9843A –6– REV. 0 PIN CONFIGURATION 36 35 34 33 32 31 30 29 28 27 26 25 13 14 1 5 16 17 1 8 19 20 21 22 2 3 24 1 2 3 4 5 6 7 8 9 10 11 12 4 8 47 4 6 45 44 39 3 8 37 4 3 42 41 40 PIN 1 IDENTIFIER .
AD9843A –7– REV. 0 DEFINITIONS OF SPECIFICATIONS DIFFERENTIAL NONLINEARITY (DNL) An ideal ADC exhibits code transitions that are exactly 1 LSB apart.
AD9843A –8– REV. 0 SAMPLE RATE – MHz 100 70 40 52 0 10 POWER DISSIPATION – mW 50 60 80 90 15 V DD = 3.3V V DD = 3.0V V DD = 2.7V TPC 1. Power vs.
AD9843A –9– REV. 0 CCD-MODE AND AUX-MODE TIMING N – 10 N – 9N – 8N – 1N N N+1 N+2 N+9 N+10 t ID t ID t S1 t S2 t CP t INH t OD t H NOTES: 1. RECOMMENDED PLACEMENT FOR DATACLK RISING EDGE IS BETWEEN THE SHD RISING EDGE AND NEXT SHP FALLING EDGE.
AD9843A –10– REV. 0 SERIAL INTERFACE TIMING AND INTERNAL REGISTER DESCRIPTION Table I. Internal Register Map Register Address Data Bits Name A0 A1 A2 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 Operation 0 .
AD9843A –11– REV. 0 Table II. Operation Register Contents (Default Value x000) Optical Black Clamp Reset Power-Down Modes Channel Selection D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 * 0 * 0 * 1 ** 0 * 0.
AD9843A –12– REV. 0 2dB TO 36dB CLPDM CCDIN 10 DIGITAL FILTERING CLPOB DC RESTORE INPUT OFFSET CLAMP OPTICAL BLACK CLAMP 0 TO 64 LSB 0.1 F DOUT 10-BIT ADC VGA 8-BIT DAC 8 VGA GAIN REGISTER 10 CDS – 2dB TO +10dB INTERNAL V REF 2V FULL SCALE CDS GAIN REGISTER 6 CLAMP LEVEL REGISTER Figure 11.
AD9843A –13– REV. 0 together with CLPOB or separately. The CLPDM pulse should be a minimum of four pixels wide. Variable Gain Amplifier The VGA stage provides a gain range of 2 dB to 36 dB, program- mable with 10-bit resolution through the serial digital interface.
AD9843A –14– REV. 0 Table VIII. VGA Gain Register Used for AUX2-Mode MSB LSB D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Gain (dB) X0 XXXXXXXXX0 . 0 10000000000 . 0 •• •• •• 11111111111 8 . 0 AUX1IN 0.1 F VGA GAIN REGISTER ADC VGA 10 5k 0.
AD9843A –15– REV. 0 APPLICATIONS INFORMATION The AD9843A is a complete Analog Front End (AFE) product for digital still camera and camcorder applications. As shown in Figure 16, the CCD image (pixel) data is buffered and sent to the AD9843A analog input through a series input capacitor.
–16– C02194–0–10/00 (rev. 0) PRINTED IN U.S.A. AD9843A REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 48-Lead LQFP (ST-48) TOP VIEW (PINS DOWN) 1 12 13 25 24 36 37 48 0.019 (0.5) BSC 0.276 (7.00) BSC SQ 0.011 (0.27) 0.006 (0.17) 0.
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If you already are a holder of Analog Devices AD9843A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Analog Devices AD9843A.
However, one of the most important roles played by the user manual is to help in solving problems with Analog Devices AD9843A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Analog Devices AD9843A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
