AD9807JS Analog Devices Inc, AD9807JS Datasheet

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AD9807JS

Manufacturer Part Number
AD9807JS
Description
IC CCD SIGNAL PROC 12BIT 64-PQFP
Manufacturer
Analog Devices Inc
Type
CCD Signal Processor, 12-Bitr
Datasheets

Specifications of AD9807JS

Rohs Status
RoHS non-compliant
Input Type
Logic
Output Type
Logic
Interface
Microprocessor
Current - Supply
86mA
Mounting Type
Surface Mount
Package / Case
64-MQFP, 64-PQFP
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD9807JS
Manufacturer:
ADI
Quantity:
455
Part Number:
AD9807JS
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
PRODUCTION DESCRIPTION
The AD9807 is a complete CCD imaging decoder and signal
processor on a single monolithic integrated circuit. The input of
the AD9807 allows direct ac coupling of the charge-coupled
device (CCD) output(s). The AD9807 includes all the circuitry
to perform three-channel correlated double sampling (CDS)
and programmable gain adjustment of the CCD output; a 12-bit
analog-to-digital converter (ADC) quantizes the analog signal.
After digitization, the on-board digital signal processor (DSP)
circuitry allows pixel rate offset and gain correction. The DSP
also corrects odd/even CCD register imbalance errors. A parallel
control bus provides a simple interface to 8-bit micro-controllers.
The AD9807 comes in a space saving 64-pin plastic quad flat-
pack (PQFP) and is specified over the commercial (0 C to +70 C)
temperature range. By disabling the CDS, the AD9807 is also
suitable for non-CCD applications or applications that do not
require CDS.
PRODUCT HIGHLIGHTS
The AD9807 offers a complete, single-chip, CCD imaging front
end in a 64-pin plastic quad flatpack (PQFP).
On-Chip PGA—The AD9807 includes a 3-channel analog
programmable gain amplifier; it is programmable from 1 to 4
in 16 increments.
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. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
Pin Compatible 10-Bit Version
Pixel-Rate Digital Gain Adjustment
Pixel-Rate Digital Offset Adjustment
Internal Voltage Reference
No Missing Codes Guaranteed
Microprocessor-Compatible Control Interface
+3.3 V/+5 V Digital I/O Compatibility
Low Power CMOS: 500 mW
64-Pin PQFP Surface Mount Package
FEATURES
12-Bit 6 MSPS A/D Converter
Integrated Triple Correlated Double Sampler
3-Channel, 2 MSPS Color Mode
1
– 4
Analog Programmable Gain Amplifier
On-Chip CDS—An integrated 3-channel correlated double
sampler allows easy ac coupling directly from the CCD sensor
outputs. Additionally the CDS reduces 1/f noise and reset
feedthrough.
On-Chip Voltage Reference—The AD9807 includes a 2 V
bandgap reference that allows the input range of the AD9807 to be
configured for input spans up to 4 V.
Twelve-Bit 6 MSPS A/D Converter—A highly linear 12-bit A/D
converter sequentially digitizes the red, green, and blue CDS
outputs ensuring no missing code performance. The user may
also configure the AD9807 for single channel operation.
Digital Gain & Offset Correction—Pixel rate digital gain and
offset correction blocks allow precise, repeatable correction of
imaging system error sources.
Digital I/O Compatibility—The AD9807 offers +3.3 V/+5 V logic
level compatibility.
Pin-Compatible 10-Bit Version—The AD9807 is also offered in a
pin-compatible 10-bit version, the AD9805, to allow upgrade-
ability and simplifying design issues across different scanner
models.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
VINR
VING
VINB
GREEN
BLUE
RED
AD9807
CDSCLK1 CDSCLK2
FUNCTIONAL BLOCK DIAGRAM
CDS
Complete 12-Bit 6 MSPS
CCD Signal Processor
World Wide Web Site: http://www.analog.com
PGA
PGA
PGA
REGISTERS
MUX
OFFSET
CONFIG
GAIN
INPUT
REGS
ADCCLK
VREF
ADC
REF
© Analog Devices, Inc., 1996
EVEN
ODD
8-10
OFFSET
PIXEL
AD9807
12-10
PORT
MPU
PIXEL
GAIN
X
12-10
CSB
RD
DOUT
WR
A2
A1
A0

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AD9807JS Summary of contents

Page 1

FEATURES 12-Bit 6 MSPS A/D Converter Integrated Triple Correlated Double Sampler 3-Channel, 2 MSPS Color Mode 1 – 4 Analog Programmable Gain Amplifier Pin Compatible 10-Bit Version Pixel-Rate Digital Gain Adjustment Pixel-Rate Digital Offset Adjustment Internal Voltage Reference No ...

Page 2

AD9807–SPECIFICATIONS ANALOG SPECIFICATIONS Parameter RESOLUTION AD9807 AD9805 CONVERSION RATE 3-Channel Mode With CDS 1 1-Channel Mode With CDS DC ACCURACY 2 Integral Nonlinearity (INL) 2 Differential Nonlinearity (DNL) No Missing Codes AD9807 AD9805 Unipolar Offset Error (@ +25 C) Gain ...

Page 3

TIMING SPECIFICATIONS (T Parameter CLOCK PARAMETERS 3-Channel Conversion Rate 1-Channel Conversion Rate CDSCK1 Pulse Width CDSCK1 Pulse Width CDSCK2 Pulse Width CDSCK2 Pulse Width CDS Clocks Digital Quiet Time CDSCK2 Falling to CDSCK1 Rising CDSCK2 Falling to CDSCK1 Rising CDSCK1 ...

Page 4

AD9807 AVDD AVSS CAPT CAPT CAPB CAPB VREF AVSS VING AVSS AVSS AVDD STRTLN Pin No. Pin Name 1, 15 AVDD 2, 10, 12, 14 AVSS 3, 4 CAPT 5, 6 CAPB 7 VREF 8 CML 9 VINR 11 VING ...

Page 5

AVDD AVSS CAPT CAPT CAPB CAPB VREF AVSS AVSS AVSS AVDD STRTLN CONNECT Pin No. Pin Name 1, 15 AVDD 2, 10, 12, 14 AVSS 3, 4 CAPT 5, 6 CAPB 7 VREF 8 CML 9 VINR ...

Page 6

AD9807 ABSOLUTE MAXIMUM RATINGS* With Respect Parameter to Min Max AVDD AVSS –0.5 AVSS AVSS –6.5 DVDD DVSS –0.5 AGND DVSS –1.0 AVDD DVDD –6.5 Clock Input DVSS –0.5 Digital Ouputs DVSS –0.5 AIN, VREF AVSS –0.3 Junction Temperature Storage ...

Page 7

ANALOG INPUTS t AD STRTLN t C1C2A t C1A CDSCLK1 t C1AD CDSCLK2 t ACLK ADCCLK R GAIN<n:0> OFFSET<m:0> ANALOG INPUTS (0V) STRTLN CDSCLK1 t ACLK ADCCLK GAIN<n:0> OFFSET<m:0> ANALOG t INPUTS AD STRTLN t C1B t C1C2B ...

Page 8

AD9807 ANALOG INPUTS (0V) STRTLN CDSCLK1 ADCCLK GAIN<n:0> OFFSET<m:0> Figure 1d. 1-Channel SHA-Mode Clock Timing (All Channels) ANALOG INPUTS STRTLN CDSCLK1 t Q CDSCLK2 ADCCLK GAIN<n:0> OFFSET<m:0> OEB CSB A0, A1, A2 WRB MPU<7:0> ...

Page 9

CSB A0, A1, A2 RDB MPU<7:0> RED VINR CDS PGA GREEN VING CDS PGA BLUE VINB CDS PGA CDSCLK1 CDSCLK2 STRTLN ADCCLK REGISTER OVERVIEW MPU Port Map Table II shows the MPU Port Map; the MPU Port ...

Page 10

AD9807 FULL SCALE 4X FULL SCALE 2X FULL SCALE 10-BIT GAIN, 10-BIT OFFSET 11-BIT GAIN, 9-BIT OFFSET 12-BIT GAIN, 8-BIT OFFSET COLOR0 COLOR1 Figure 5. AD9807 Configuration Register Format Configuration Register/AD9805 ...

Page 11

The offset is variable in 256 steps. The contents of the color pointer in the Configuration Register at the time an ADC Offset Register is written indicates the color for which that ...

Page 12

AD9807 FUNCTIONAL OVERVIEW It is possible to operate the AD9807 in one of five modes: 3-Channel Operation with CDS, 3-Channel SHA Operation, 1-Channel Operation with CDS, 1-Channel SHA Operation; and 2-Channel Bayer Mode. A description of each of the five ...

Page 13

SHA Operation This mode of the AD9807 enables single-channel, or mono- chrome sampling; it differs from the CDS monochrome sampling mode in that the CDS function is replaced with a simple sample-and-hold amplifier (SHA). CDSCLK1 becomes the sample-and-hold clock; ...

Page 14

AD9807 PIXEL n RIN, GIN, BIN CDSCLK1 CDSCLK2 ADCCLK R DATA<11:0> GAIN<n:0> R (n) G (n) GAIN<m:0> PIXEL n RIN, GIN, BIN CDSCLK1 ADCCLK R DATA<11:0> GAIN<n:0> R (n) G (n) GAIN<m:0> PIXEL n RIN, GIN, BIN CDSCLK1 CDSCLK2 ADCCLK ...

Page 15

PIXEL n RIN, GIN, BIN CDSCLK1 ADCCLK DATA<11:0> GAIN<n:0> G (n) OFFSET<m:0> 4.0 3.5 3.0 2.5 GAIN (dB) 2.0 1.5 1 PGA GAIN SETTING Figure 16. PGA ...

Page 16

AD9807 Choosing the Input Coupling Capacitors Because of the dc offset present at the output of CCDs likely that these outputs will require some form of dc-restora- tion to be compatible with the input requirements of the AD9807. ...

Page 17

Note that a capacitor larger than 133 pF would still work, it would just take several lines to charge the input capacitor up to the full V level. Another option to lengthen T C clocking the CCD and CDSCLK1 while ...

Page 18

AD9807 To calibrate the AD9807 for a particular scan, use the following sequence. SET PGA GAIN(S) (INPUT OFFSET = 0mV) SCAN DARK LINE COMPUTE PIXEL OFFSETS SET INPUT OFFSET SET ODD/EVEN OFFSET SET YES ANOTHER COLOR ? NO SET GAIN/OFFSET ...

Page 19

CIS Application Unlike many other integrated circuit CCD signal processors, the AD9807 can easily be implemented in imaging systems that do not use a CCD. By disabling the input clamp and the CDS blocks, any dc coupled signal within the ...

Page 20

AD9807 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 64-Terminal PQFP (S-64) 0.687 (17.45) 0.667 (16.95) 0.093 (2.35) 0.555 (14.10) MAX 0.547 (13.90) 0.472 (12.0) BSC 0.041 (1.03) 0.029 (0.73 PIN 1 SEATING PLANE TOP VIEW ...

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