AD9806KST

Manufacturer Part NumberAD9806KST
DescriptionIC CCD SIGNAL PROC 10BIT 48-LQFP
ManufacturerAnalog Devices Inc
TypeCCD Signal Processor, 10-Bit
AD9806KST datasheets

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Specifications of AD9806KST

Rohs StatusRoHS non-compliantInput TypeLogic
Output TypeLogicInterface3-Wire Serial
Mounting TypeSurface MountPackage / Case48-LQFP
Analog Front End TypeCCDAnalog Front End CategoryVideo
Interface TypeSerial (3-Wire)Input Voltage Range0.5V
Operating Supply Voltage (min)2.7VOperating Supply Voltage (typ)3.3V
Operating Supply Voltage (max)3.6VResolution10b
Number Of Adc's1Power Supply TypeAnalog/Digital
Operating Temp Range-20C to 85COperating Temperature ClassificationCommercial
MountingSurface MountPin Count48
Package TypeLQFPNumber Of Channels1
Current - Supply-  
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AD9806
TIMING SPECIFICATIONS (Continued)
VIDEO
SIGNAL
INPUT
CLAMP INTERVAL
(AD9806 INTERNAL
SIGNAL)
NOTE: The AD9806 uses an “automatic” video clamp that senses the most negative in the input signal and uses this level to set the clamp voltage.
As shown in the video waveform above, the SYNC level will be clamped to the black level specified in the E-Register.
PGA GAIN CURVE DETAILS
In CCD-Mode, the AD9806 PGA stage provides a gain range
of 0 dB to 34 dB, programmable with 10-bit resolution through
the serial digital interface. The PGA gain curve is divided into
two separate regions. When the PGA Gain Register code is
between 0, and 511, the curve follows a (1 + x)/(1 – x) shape,
which is similar to a “linear-in-dB” characteristic. From Code
CCD-MODE
Code Range Gain Equation (dB)
0–511
Gain = 20 log
([658 + code]/[658 – code]) – 2.4
10
512–1023
Gain = (0.0354)(code) – 2.4
34
28
22
16
10
4
–2
0
383
511
639
127
255
PGA GAIN REGISTER CODE
??V
0.8V
0.1 F
INPUT SIGNAL
0.4V
H
SYNC
INTERNAL CLAMPING
OCCURS DURING SYNC
512 to Code 1023, the curve follows a “linear-in-dB” shape. In
AUXMID-Mode, the PGA provides a gain range of –4 dB to
+14 dB, programmable with 9-bit resolution. The exact PGA
gain for either mode can be calculated for any Gain Register
value by using the following equations:
Code Range Gain Equation (dB)
512–1023
14
11
8
5
2
–1
–4
767
895
1023
512
0.4V
5k
–4 dB TO +14dB
AUXMID
PGA
PIN 35
9
0.4V
PGA GAIN
REGISTER
AUXMID-MODE
Gain = 20 log
([146 + code]/[1170 – code]) – 4
10
639
767
895
PGA GAIN REGISTER CODE
ADC
MIDSCALE
1023

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