OV7930 OmniVision Technologies, OV7930 Datasheet

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OV7930

Manufacturer Part Number
OV7930
Description
Manufacturer
OmniVision Technologies
Datasheet
General Description
Features
Ordering Information
Version 1.1, January 15, 2003
The OV7930 (color) is a high performance quarter-inch
CMOS C
requiring a small footprint, low voltage, low power
consumption and low cost color video camera.
The device supports NTSC composite video output and
can directly interface with a VCR TV monitor or other
75 ohm terminated input with 2X standard TV signal
range. The OV7930 C
5-volt DC power supply and have been designed for very
low power operation.
OV7930 (Color, VGA,
Single chip 1/4" lens video camera
Composite video: NTSC
Automatic exposure/gain/white balance
External frame sync capability
Aperture correction
SCCB programmable controls:
Gamma correction (0.45) ON/OFF
Low power consumption
+5 volt only power supply
Wide dynamic range, anti-blooming, zero smearing
Sensitivity boost (+27 dB)/AGC ON/OFF
NTSC, CVO)
Color saturation
Brightness
Hue
White balance
Exposure
Gain
Gamma curve
Aperture correction
Product
AMERA
C
HIP
TM
AMERA
designed for all applications
C
HIP
CLCC-28, PLCC-28
s require only a single
Packages
TM
OV7930 Color CMOS Analog C
Proprietary to OmniVision Technologies
Applications
Key Specifications
Figure 1 OV7930 Pin Diagram
Requirements
VRCHG
Auto Electronic Exposure Time 1/60s - 6.3µs
VREQ
OVDD
CVO
Minimum Illumination (3000K) < 2.0 Lux
NC
NC
NC
Video Conferencing
Video Phones
Video E-mail
PC Multimedia
Toys
Security
Surveillance
Finger Printing
Medical and Dental Equipment
Power
10
11
5
6
7
8
9
Package Dimensions 0.45 in. x 0.45 in.
Fixed Pattern Noise < 0.03% V
12
4
Without Loading 20 mA
Dynamic Range > 70 dB
13
3
Power Supply 5 VDC + 5%
Dark Current < 100 mV/s
With 75 ohm
Preliminary Datasheet
Advanced Information
Image Area 4.00 mm x 3.08 mm
14
2
Array Size 510 x 492
Pixel Size 7.86 µm x 6.25 µm
S/N Ratio > 46 dB
OV7930
Loading
15
1
28
16
< 35 mA
27
17
AMERA
26
18
PEAK-TO-PEAK
25
24
23
22
21
20
19
C
FASTB
PWDN
FODD/HGAIN
VHS/MIR
GAMMA
FSI
DGND
HIP TM
1

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OV7930 Summary of contents

Page 1

... General Description The OV7930 (color high performance quarter-inch TM CMOS C C designed for all applications AMERA HIP requiring a small footprint, low voltage, low power consumption and low cost color video camera. The device supports NTSC composite video output and can directly interface with a VCR TV monitor or other 75 ohm terminated input with 2X standard TV signal range ...

Page 2

... Functional Description This section describes the various functions of the OV7930. Refer to Figure 2 Functional Block Diagram Column Sample/Hold Image Array Row (528 X 500) Select Clock/Timing Generator and Control Logic Video Standards NTSC TV standards are implemented and available as output in the OV7930 C AMERA accuracy and stability of the crystal clock frequency is important to avoid unwanted color shift in the TV video system ...

Page 3

... Brightness can be controlled either by internal automatic algorithms or by the user through the following SCCB register bits: • BRT[7:0] (see Gamma Correction The OV7930 has luminance and chrominance Gamma reads the input pins at correction through the GAMMA pin (pin 21 - see user-defined default “GAMMA” on page ...

Page 4

... OVDD 12 EVDD 13 EGND 14 SCCB_E 15 VPXO/VFLP 16 XCLK1 17 XCLK2 18 DVDD 19 DGND 20 FSI 21 GAMMA 22 VHS/MIR 4 Proprietary to OmniVision Technologies AMERA HIP Pin Type Default (V) Power 0 Analog ground Power 5 Analog Power (+5 VDC) Input 0 Auto brightness control ON/OFF Backlight selection Input 0 0: OFF 1: ON — — No connection Analog 2 ...

Page 5

... Normal mode Input — SCCB serial interface clock I/O — SCCB serial interface data I/O After power up, first high pulse edge will trigger one shot Input 0 AWB. System performs fast AWB only when this pin is high at this mode. Proprietary to OmniVision Technologies Pin Description Function/Description 5 ...

Page 6

... IH C Input capacitor IN Digital Outputs V Output voltage HIGH OH V Output voltage LOW OL SCCB (SIO_C and SIO_D) V SIO_C and SIO_D IL V SIO_C and SIO_D IH 6 Proprietary to OmniVision Technologies AMERA HIP Min Max 0 -40 125 TBD TBD TBD TBD < 85°C) A Parameter Min 4.75 3.5 -0.5 3 ...

Page 7

... Power up delay time PD t Power up low-z delay PZ Version 1.1, January 15, 2003 = 25° 5V Parameter Min — — 40 — — — — — — — — Proprietary to OmniVision Technologies Electrical Characteristics Typ Max 14.31818 — — 2.0 — 0.58 — 0.58 — 75 — ...

Page 8

... EQUALIZING FIELD 2 261 262 263 264 EQUALIZING 8 Proprietary to OmniVision Technologies AMERA HIP Figure 3 shows the NTSC timing and signal range. The OV7930 outputs 2X T =63.49us IRE set (A) HORIZONTAL TIMING FOR NTSC VERTICAL SYNC 265 ...

Page 9

... SCCB Rise/Fall times Data-out Hold time t DH Version 1.1, January 15, 2003 t HIGH t LOW HD:STA HD:DAT SU:DAT Parameter Proprietary to OmniVision Technologies Timing Specifications SU:STO t BUF Min Typ Max 400 1.3 600 100 900 1.3 600 600 0 100 600 300 50 ...

Page 10

... OV7930 Light Response Figure 5 OV7930 Light Response 10 Proprietary to OmniVision Technologies AMERA HIP O mni ision Version 1.1, January 15, 2003 ...

Page 11

... O mni ision Register Set Table 6 provides a list and description of the Device Control registers contained in the OV7930. The device slave addresses are 80 for write and 81 for read. Table 6 Device Control Register List Address Register Default (Hex) Name (Hex) 00 GAIN 00 01 BLUE 80 02 ...

Page 12

... MIDL A2 13 AEC 82 14 COMD 1F 15 COME 04 16 COMF 44 12 Proprietary to OmniVision Technologies AMERA HIP R/W – Reserved R Version number R Manufacturer ID Byte -- High R Manufacturer ID Byte – Low Exposure Control Value RW • Range: [00] to [82] Tex = (2 x AEC[7: 63.5 µs Common Control D Bit[7:6]: AEC/AGC algorithm analyze image area selection ...

Page 13

... XX 1D COMJ 30 1E-20 RSVD XX 21 VPT A4 22-33 RSVD XX NOTE: All other registers are factory-reserved. Please contact OmniVision Technologies for reference register settings. Version 1.1, January 15, 2003 R/W Common Control G Bit[7]: Fast AGC/AEC algorithm ON/OFF 0: OFF 1: ON Bit[6:5]: Reserved Bit[4]: FODD pin (pin 23 - see signal selection - combined with COME[5] (see ...

Page 14

... Package Specifications The OV7930 uses either a 28-pin ceramic package or 28-pin plastic package. Refer to information, Figure 7 for plastic package information, and Figure 6 OV7930 Ceramic Package Specifications .450 SQ ± .008 .350 SQ ± .006 .011 MIN .013 MIN B/F EXPOSURE .014 TYP .010 x 45 ...

Page 15

... O mni ision Figure 7 OV7930 Plastic Package Specifications .300 ± .004 .050 ± .004 .012 Pin 1 Index .009 R REF .035 TYP MIN. .025 ± .003 TYP .085 TYP Table 8 OV7930 Plastic Package Dimensions Dimensions Package Size Package Height ...

Page 16

... Sensor Array Center Figure 8 OV7930 Sensor Array Center Package Center (0,0) NOTES: 1. This drawing is not to scale and is for reference only most optical assemblies invert and mirror the image, the chip is typically mounted with pin one oriented down on the PCB. 16 Proprietary to OmniVision Technologies ...

Page 17

... OmniVision web site (http://www.ovt.com) to obtain the current versions of all documentation. • OmniVision Technologies, Inc. reserves the right to make changes to their products or to discontinue any product or service without further notice (It is advisable to obtain current product documentation prior to placing orders). • ...

Page 18

... Proprietary to OmniVision Technologies AMERA HIP O mni ision Version 1.1, January 15, 2003 ...

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