CS7622-IQ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS7622-IQ

CCD Imager Analog Processor

Cirrus Logic 

CS7622

Compander X1 (MSBs) ............................................................................ 30

Compander X1 (LSBs) ............................................................................. 30

Compander X2 (MSBs) ............................................................................ 30

Compander X2 (LSBs) ............................................................................. 30

Compander X3 (MSBs) ............................................................................ 31

Compander X3 (LSBs) ............................................................................. 31

Device ID .................................................................................................. 31

Revision Code .......................................................................................... 31

5.0 PIN DESCRIPTIONS ......................................................................................... 32

Supply ...................................................................................................... 32

Ground ..................................................................................................... 32

CMOS Input ............................................................................................. 32

CMOS Analog Input ................................................................................. 33

CMOS 4 mA Output ................................................................................. 33

6.0 PACKAGE DIMENSIONS ................................................................................. 34

LIST OF FIGURES

Figure 1. SEN Timing.........................................................................................................................6

Figure 2. Serial Write Timing..............................................................................................................6

Figure 3. Read Data Timing ...............................................................................................................6

Figure 4. Digital Camera Block Diagram............................................................................................7

Figure 5. CS7622 Block Diagram.......................................................................................................7

Figure 6. Idealized CCD output waveform .........................................................................................8

Figure 7. Transfer function of VGA circuit (assuming full scale level of 1.0 V) ..................................9

Figure 8. Block diagram of CDS/VGA circuit......................................................................................9

Figure 9. Idealized timing diagram of VGA/CDS circuit ...................................................................10

Figure 10.Black level adjustment loop ..............................................................................................11

Figure 11.Transfer function of Vin to Gain Adjust output Block (assuming full scale level of 1.0 V).12

Figure 12.Gain Adjust output Block...................................................................................................12

Figure 13.13-to-10 bit compander.....................................................................................................13

Figure 14.CS7622 output data and clocks ........................................................................................14

Figure 15.Input Timing ......................................................................................................................14

Figure 16.Typical Connection Diagram.............................................................................................16

Figure 17.Transfer Function of Analog Input to Digital Output (assuming full scale level of 1.0 V) ..24

Figure 18.Transfer Function of ADC with Fixed Gain Settings (assuming full scale level of 1.0 V)..26

DS322PP1

3

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