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AD9846A PDF даташит

Спецификация AD9846A изготовлена ​​​​«Analog Devices» и имеет функцию, называемую «Complete 10-Bit 30 MSPS CCD Signal Processor».

Детали детали

Номер произв AD9846A
Описание Complete 10-Bit 30 MSPS CCD Signal Processor
Производители Analog Devices
логотип Analog Devices логотип 

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AD9846A Даташит, Описание, Даташиты
a
FEATURES
30 MSPS Correlated Double Sampler (CDS)
4 dB ؎ 6 dB 6-Bit Pixel Gain Amplifier (PxGA®)
2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)
Low Noise Clamp Circuits
Analog Preblanking Function
10-Bit 30 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 100 mW @ 2.7 V
48-Lead LQFP Package
APPLICATIONS
Digital Still Cameras
Digital Video Camcorders
Industrial Imaging
Complete 10-Bit 30 MSPS
CCD Signal Processor
AD9846A
PRODUCT DESCRIPTION
The AD9846A is a complete analog signal processor for CCD
applications. It features a 30 MHz single-channel architecture
designed to sample and condition the outputs of interlaced and
progressive scan area CCD arrays. The AD9846A’s signal chain
consists of an input clamp, correlated double sampler (CDS),
Pixel Gain Amplifier (PxGA), digitally controlled variable gain
amplier (VGA), black level clamp, and a 10-bit A/D con-
verter. Additional input modes are provided for processing
analog video signals.
The internal registers are programmed through a 3-wire
serial digital interface. Programmable features include gain
adjustment, black level adjustment, input conguration, and
power-down modes.
The AD9846A operates from a single 3 V power supply, typi-
cally dissipates 117 mW, and is packaged in a 48-lead LQFP.
CCDIN
CLPDM
AUX1IN
AUX2IN
PBLK
FUNCTIONAL BLOCK DIAGRAM
AVDD
AVSS
HD
VD
CLPOB
4dB؎6 dB
CDS
PxGA
CLP
6
2:1
MUX
BUF
CLP
AD9846A
COLOR
STEERING
2:1
MUX
2dB~36dB
VGA
OFFSET
10 DAC
CONTROL
REGISTERS
DIGITAL
INTERFACE
8
CLP
DRVDD
DRVSS
ADC
DOUT
10
BANDGAP
REFERENCE
VRT
VRB
INTERNAL
BIAS
CML
INTERNAL
TIMING
DVDD
DVSS
SL SCK SDATA
SHP SHD DATACLK
PxGA is a registered trademark of Analog Devices, Inc.
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001









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AD9846A Даташит, Описание, Даташиты
AD9846A–SPECIFICATIONS
GENERAL SPECIFICATIONS (TMIN to TMAX, AVDD = DVDD = 3.0 V, fDATACLK = 30 MHz, unless otherwise noted.)
Parameter
Min Typ
Max
Unit
TEMPERATURE RANGE
Operating
Storage
20 +85 °C
65
+150
°C
POWER SUPPLY VOLTAGE
Analog, Digital, Digital Driver
2.7
3.6 V
POWER CONSUMPTION
Normal Operation
Power-Down Modes
Fast Recovery Mode
Standby
Total Power-Down
(Specied Under Each Mode of Operation)
85
5
1
mW
mW
mW
MAXIMUM CLOCK RATE
30
MHz
A/D CONVERTER
Resolution
Differential Nonlinearity (DNL)
No Missing Codes
Full-Scale Input Voltage
Data Output Coding
10
± 0.5 ± 1.0
10
2.0
Straight Binary
Bits
LSB
Bits Guaranteed
V
VOLTAGE REFERENCE
Reference Top Voltage (VRT)
Reference Bottom Voltage (VRB)
2.0 V
1.0 V
Specications subject to change without notice.
DIGITAL SPECIFICATIONS (DRVDD = 2.7 V, CL = 20 pF unless otherwise noted.)
Parameter
Symbol
Min Typ Max Unit
LOGIC INPUTS
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Input Capacitance
LOGIC OUTPUTS
High Level Output Voltage, IOH = 2 mA
Low Level Output Voltage, IOL = 2 mA
VIH
VIL
IIH
IIL
CIN
VOH
VOL
2.1 V
0.6 V
10 µA
10 µA
10 pF
2.2 V
0.5 V
Specications subject to change without notice.
–2– REV. 0









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AD9846A Даташит, Описание, Даташиты
AD9846A
CCD-MODE SPECIFICATIONS (TMIN to TMAX, AVDD = DVDD = 3.0 V, fDATACLK = fSHP = fSHD = 30 MHz, unless otherwise noted.)
Parameter
Min Typ Max
Unit
Note
POWER CONSUMPTION
117 mW See TPC 1 for Power Curves
MAXIMUM CLOCK RATE
30
MHz
CDS
Gain
Allowable CCD Reset Transient1
Max Input Range Before Saturation1
Max CCD Black Pixel Amplitude1
0
500
1.0
200
dB
mV
V p-p
mV
See Input Waveform in Footnote 1
PxGA Gain at 4 dB
PIXEL GAIN AMPLIFIER (PxGA)
Max Input Range
Max Output Range
Gain Control Resolution
Gain Monotonicity
Gain Range (Twos Complement Coding)
Min Gain (PxGA Gain Code 32)
Max Gain (PxGA Gain Code 31)
1.0
1.6
64
Guaranteed
2
10
V p-p
V p-p
Steps
dB
dB
See Figure 28 for PxGA Gain Curve
VARIABLE GAIN AMPLIFIER (VGA)
Max Input Range
Max Output Range
Gain Control Resolution
Gain Monotonicity
Gain Range
Low Gain (VGA Gain Code 91)
Max Gain (VGA Gain Code 1023)
1.6
2.0
1024
Guaranteed
2
36
V p-p
V p-p
Steps
dB
dB
See Figure 29 for VGA Gain Curve
BLACK LEVEL CLAMP
Clamp Level Resolution
Clamp Level
Min Clamp Level
Max Clamp Level
256
0
63.75
Steps
LSB
LSB
Measured at ADC Output
SYSTEM PERFORMANCE
Gain Accuracy (VGA Code 91 to 1023)2
PxGA Gain Accuracy
Min Gain (PxGA Register Code 32)
Max Gain (PxGA Code 31)
Peak Nonlinearity, 500 mV Input Signal
Total Output Noise
Power Supply Rejection (PSR)
0.5
1 0
11 12
0.1
0.2
40
+0.5
+1
12
Specications Include Entire Signal Chain
Use Equations on Page 18 to Calculate Gain
dB
dB
%
LSB rms
dB
VGA Gain Fixed at 2 dB (Code 91)
VGA Gain Fixed at 2 dB (Code 91)
12 dB Gain Applied
AC Grounded Input, 6 dB Gain Applied
Measured with Step Change on Supply
POWER-UP RECOVERY TIME
Fast Recovery Mode
Reference Standby Mode
Total Power-Down Mode
Power-Off Condition
Normal Clock Signals Applied
0.1 ms
1 ms
3 ms
15 ms
NOTES
1Input Signal Characteristics dened as follows:
500mV TYP
RESET TRANSIENT
200mV MAX
OPTICAL BLACK PIXEL
1V MAX
INPUT SIGNAL RANGE
2PxGA gain fixed at 4 dB (Code 63).
Specications subject to change without notice.
REV. 0
–3–










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