Samsung KA7302D Datasheet
KA7302D CDS, AGC, GAMMA CORRECTION
AGC CONT
AGC OUT
ORDERING INFORMATION
GENERAL DISCRIPTION
The KA7302D is a bipolar monolithic integrated circuit
for CCD Color Video Camera, and then it provides functions
of Correlated Double Sampling, Automatic Gain Control and
Gamma Correction.
FEATURES
• CDS ( Correlated Double Sampling )
• AGC ( Automatic Gain Control )
• Gamma Compensation
• +5V Single Power Supply
• Low Power < 400 mW
• Dual Power Down Mode
- AGC Part stand by mode ( AGC OUT : GND )
• Maxmum Operational Frequency > 20 MHz
BLOCK DIAGRAM
CLP1
30
C
O
M
P
1
SHD
1 2
PBLK
29 28
C
O
M
P
2
SHP
GC1
SH3
3
CLP4
REFV
27
REV
SH2
SH1
4
DGND
CDS CAP
26 25 24 23
BLK
CLP
6
5
7 8 9
30-SSOP-375
Device Package Operating Temperature
KA7302D 30-SSOP-375
-20°C ~ +75 °C
AGC CAP
GAMMA OUT
BUF
AGC
6dB
C_GAMMA
GAMCON
CDS OUT
22
CLP
SO
21
BLK
BUF
CLP
DLY
10 11
SOB
20 19
Y_GAMMA
GAMCON
12
GAM CAP
GC2
BPF
VCC
18
MIX GC3
13 14
AGND2
17 16
BUF
CLP
B
U
F
15
XSHD
XSHP
PG IN
DATA IN
AGND1
C_GAM
CDS GC
CONT
TRAP1
TRAP2
GAMMA
GC
DLY1
AGC GC
DLY2
Y_GAM
CONT
KA7302D CDS, AGC, GAMMA CORRECTION
PIN DESCRIPTION
No Symbol I/O Description Active
1 XSHD I Sample & Hold DATA Pulse LOW
2 XSHP I Sample & Hold Pre - Charge Pulse LOW
3 DATA IN I CCD Signal Input
4 PG IN I CCD Signal Input
5 AGND1 - Analog Ground
6 AGC CONT I AGC Gain Control
7 CDS GC1 I CDS Gain Control
8
9 TRAP1 O A Luminance trap filter is tied between this pin & Trap2
10 TRAP2 I Y _ Gamma Control
11
12 AGC GC2 I GC2 Gain Control
13 DLY1 I Output for Delay (Chroma Signal)
14 DLY2 O Input for Delay (Chroma Signal)
15
16 AGC OUT O AGC Signal Output
17 AGND2 - Analog Ground
18 VCC - Power Supply
19
20 SOB O Connected to BPF
21 SO O Connected to BPF
22 CDS OUT O CDS Signal Output
23
24 AGC CAP O AGC Clamp Capacitor
25 CDS CAP O CDS Clamp Capacitor
26 DGND - Digital Ground
27 REFV O Reference Voltage Output HIGH
28 CLP4 I Clamp Pulse 4 Input
29 PBLK I Pre - Blarking Pulse Input LOW
30 CLP1 I Clamp Pulse 1 Input HIGH
C γ CONT
γ GC3
Y γ CONT
γ CAP
γ OUT
* HIGH(H): 4.0V ↑, LOW(L): 4.0V ↓
ABSOLUTE MAXIMUM RATINGS(Ta = 25°C)
I C _ Gamma Control
I GC3 Gain Control
I Y Gamma Curve Control
O Gamma Clamp Capacitor
O Gamma Signal Output
Characteristic Symbol Value Unit
Power Source Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Vcc
Pd
Topr
Tstg
7
900
-20 ~ 75
-65 ~ 150
RECOMMANDED OPERATING CONDITIONS(Ta = 25°C)
Characteristic Symbol Value Unit
Supply Voltage Vcc 4.5 ~ 5.5 V
V
mW
°C
°C
KA7302D CDS, AGC, GAMMA CORRECTION
ELECTRICAL CHARACTERISTICS
( Vcc = 4.5 ~ 5.5 V , Ta = 25 °C )
Characteristics Symbol Test Condition Min Typ Max Unit
SUPPLY CURRENT
GC1 CONT.Min
GC1 CONT.Max
CDS OUT Maximum
Voltage Swing
GC1 AMP CMPR CMR1 15.75KHz - -4.0 -36 dB
GC1 AMP Bandwidth FC1A 10MHz -3 - - dB
AGC CONT.Min
AGC CONT.Max
AGC AMP CMRR CMRA 15.75KHz - -40 -36 dB
AGC AMP Bandwidth FCA1 20MHz -3 - - dB
GC3 AMP CMRR CMR3 15.75KHz - -40 -36 dB
AGC AMP Bandwidth FC3A 10MHz -3 - - dB
GC3 CONT.Min GC3A Min
GC3 CONT.Max GC3A Max
ϒ OUT Maximum
Voltage Swing
ICCR1
ICC1
GC1A
Min
GC1A
Max
CDR1
AGC1
Min
AGC1
Max
GDR1
AGC OUT & GAM OUT → OPEN
VCC=5V
AGC OUT → GND
VCC=5V
CDS OUT/DATA IN
CDS GC=1.5V
CDS OUT/DATA IN
CDS GC=4.5V
DATA IN = 400mV
(Peak to Peak)
TRAP1 OUT/DATA IN
AGC CONT =1.5V
Cal :AGC Gain -6dB
TRAP1 OUT/DATA IN
AGC CONT = 4.5V
Cal: AGC Gain -6dB
ϒ OUT/SO
ϒ GC=1.5V
ϒ OUT/SO
ϒ GC=4.5V
SO Input = 400mV
(Peak to Peak)
61 73 88 mA
55 64 78 mA
- -6 -4 dB
14 18 - dB
2.0 - - V
4.0 6.0 8.0 dB
30 32 - dB
- -6 -4 dB
14 18 - dB
2.0 - - V
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