Page 1
Preliminary
AGC CONT
IRIS CONT
ORERING INFORMATION
KA7307D CDS/AGC
GENERAL DESCRIPTION
The KA7307 is a bipolar monolithic integrated
circuit for CCD Color Video Camera, and then
if provides functions of Correlated Double
Sampling, Automatic Gain Control, Window
Function, and Iris Amplifier Gain Control.
FEATURES
. Correlated Double Sampling (CDS)
. Automatic Gain Control (AGC)
. Low-pass-filter and Sample-and-Hold
circuit after AGC for external A/D
converters
. Window Function
. Iris Amplifer Gain Control
. + 5V Single power supply
. Low power < 330mW
20 - SOP - 300
Device Package Operating Temperature
KA7307D 20-SOP-300
- 20°C ~ + 75 °C
BLOCK DIAGRAM
DGND1
20 19 18 17
1 2 3 4 5 6 7 8 9 10
PG IN
XSHP
SH1
DATA IN
COMP2
XSHD
-
+
XSHDXSHP
AVCC
COMP1
SH2
SH3
DVCC
-
+
GC1
AGC
CLP4
16
IRIS
CONT
CLP1
15
IRISCAP
CLP
CLP1
14
AGCCAP
CLP
LPF AGC S/H BLK
IRIS CAP
PBLK
IRIS OUT
WND
13
WNDBLK
XRS
AGC CAP
XRS
12 11
PBLK
AGC OUT
DGND2
AGND
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February 1997
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Preliminary
KA7307D CDS/AGC
PIN DESCRIPTIONS
No. Symbol I/O Pin Voltage Description
1 PG IN I
2 DATA IN I ( Typ. : 2.6V )
3 AVCC I Typ. : 5.0V Supply Voltage
4 AGC CONT I
5 IRIS CONT I
6 IRIS CAP O
7 IRIS OUT O
8 AGC CAP O
9 AGC OUT O
10 AGND O - Analog Ground
11 DGND2 O - Digital Ground 2
12 XRS I
13 WND I
14 PBLK I
15 CLP1 I
16 CLP4 I
17 DVCC I Typ. : 5.0V Supply Voltage
18 XSHD I
19 XSHP I
20 DGND1 O - Digital Ground 1
Black Level
2.3V ~ 2.9V
OV ~ 5V
GAIN CONTROL
Black Level
2.05V ~ 2.55V
( Typ. : 2.27V )
Black Level
1.2V ~ 1.7V
( Typ. : 1.45V )
Black Level
2.15V ~ 2.65V
( Typ. : 2.37V )
Black Level
1.2V ~ 1.7V
( Typ. 1.45V )
H : > 4V
L : < 1V
H : > 4V
L : < 1V
H : > 4V
L : < 1V
H : > 4V High Speed Pulse Input
L : < 1V
CCD Signal Input
AGC Gain Control
IRIS Gain Control
A Pin is used to attach
IRIS Clamp Capacitor
IRIS Signal Output
Signal Max. : > 2.0Vp-p
A Pin is used to attach
IRIS Clamp Capacitor
AGC Signal Output
Signal Max. : > 2.0Vp-p
Sample - and - Hold Sig. Input
( Active Low )
High Speed Pulse
Input Pin for WINDOW ( Active Low )
Pre - Blanking Pulse
Input Pin ( Active Low )
Clamping Pulse 1
Input Pin ( Active High )
Clamping Pulse 4
Input Pin ( Active High )
Pin for Sampling / Hold ( Active Low )
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February 1997
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Preliminary
KA7307D CDS/AGC
ABSOLUTE MAXIMUM RATINGS ( Vcc = 5.0 V , Ta = 25
°C
)
Characteristics Symbol Value Unit
Supply Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
ELECTRICAL CHARACTERISTICS ( Vcc = 5.0 V , Ta = 25
Vcc
Vi
Pd
Topr
Tstg
7
4.75 ~ 5.25
530
- 20 ~ + 75
- 65 ~ + 150
°C
mW
)
Characteristics Symbol Test Condition Min Typ Max Unit
Supply Current ICC ALL PIN : OPEN 23 41 59 mA
Iris out / Data in
GC1
CONT MIN GC1C MIN
Iris CONT = 0.0V, WND >4.0V
- - 6 - 4 dB
Iris out / Data in
CONT MAX GC1C MAX
14 18 - dB
Iris CONT = Vcc, WND > 4.0V
V
V
°C
°C
Iris out maximum
CDR
voltage swing
Dta in = 400mVp - p
2.0 2.5 - V
GC1 Gain max.
CG1 Amp. CMRR CMR1 15.75KHz - - 50 - 36 dB
AGC out / Data in
AGC
CONT MIN AGC1 MIN
AGC CONT = 0.0V
- 6 8 dB
AGC out / Data in
CONT MAX AGC1 MAX
38 41 - dB
AGC CONT = Vcc
AGC Amp. CMRR CMRA 15.75KHz - - 50 - 36 dB
AGC out maximum
ADR
voltage swing
Dta in = 100mVp - p
2.0 2.5 - V
AGC Gain max.
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February 1997
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Preliminary
KA7307D CDS/AGC
OPERATING PRINCIPLES & METHODE
CCD
OUT PUT
SIGNAL
1. SIGNAL FORMAT
CCD
OUTPUT
SIGNAL
SAMPLE
&
HOLD
XSHP XSHD
Precharge Level
Data Level
GC1
IRIS CONT
CLAMP
&
BLK
CLP1 PBLK
Reset Noise Level
IRIS OUT
Data Level
0 ~ 600mVpp
XSHP
( Precharge
Level S/H Pulse )
XSHD
( Data Level
S/H Pulse )
IRIS OUT
AGC OUT
H>4V
L<1V
H>4V
L<1V
OUT PUT
Level
0 ~ 2.4Vpp
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February 1997
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Preliminary
KA7307D CDS/AGC
2. TIMING CHART FOR TESTING
DATA IN
Input Signal
20 ~ 600mVpp
2us
7us
CLP1. CLP4
PBLK. WND
OUT PUT
( IRIS OUT
AGC OUT )
H>4V
L<1V
H>4V
L<1V
Output Signal
10mVpp ~ 2.9Vpp
16us 16us
32us 32us
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February 1997
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Preliminary
KA7307D CDS/AGC
CHARACTERISTICS GRAPH
( Standard Control Characteristics ; ( Vcc = 5.0 V , Ta = 25°C )
Input Control Voltage : 0 ~ 5V
Output Gain : - 6dB ~ 18dB
30
20
10
0
IRIS OUT / DATA IN GAIN [ dB ]
-10
0
1 2 3
IRIS CONT VOLTAGE [ V ]
Input Control Voltage : 0 ~ 5V
Output Gain : 6dB ~ 41dB
50
40
30
20
10
AGC OUT / DATA IN GAIN [ dB ]
4
5
0
0
1 2 3
AGC CONT VOLTAGE [ V ]
4
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February 1997
Page 7
Preliminary
KA7307D CDS/AGC
TEST CIRCUIT
-
10uF
SL
DGND1
20 19
+
AA A A
A
SR SL SR SL SL SL SL SRSRSRSR
XSHP
COMP1
SW8
-
+
COMP2
SW7
XSHD
18 17 16 15 14 13 12 11
DVCC
-
+
SW6
CLP4
CLP
GC1
IRIS CONT
CLP1
IRISCAP
CLP1
A
SW5
AGCCAP
PBLK
A A
SW4
WND
WNDBLK
XRS
DGND2
V
PG IN
SL
SH1
XSHP
XSHD
SH2
SH3
AGC
CLP
LPF AGC S/H
BLK
XRS
1
SW1
0.1uF
SR
DATA IN
A
AVCC
+
-
0.1uF
V
SW2
SR
SL
A
A
10uF
AGC CONT
A
0.1uF
IRIS CONT
V
IRIS CAP
IRIS OUT
0.1uF
V
AGC CAP
10 3 4 5 7 8 92 6
AGND
AGC OUT
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February 1997
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Preliminary
KA7307D CDS/AGC
APPLICATION CIRCUIT
TIMMING
GENERATOR
KS7213
CCD
I. C
0.1 uF
0.1 uF
0 ~ 5 V
5.0 V
0.1uF
0.1 uF
1
PG IN
2
DATA IN
3
AVCC
4
AGC CONT
5
IRIS CON
IRIS CAP
6
7
IRIS OUT
AGC CAP
8
9
AGC OUT
10
AGND
KA7307D
DGND1
XSHP
XSHD
DVCC
CLP4
CLP1
PBLK
WND
XRS
DGND2
20
19
18
5.0 V
17
16
15
14
13
12
11
DL
0.1 uF
IRIS DET.
BUF & CLAMP
10 bit
D / A
10 bit
D / A
MICOM
DCP
KS7306
Video Out
PACKAGE DIMENSION
VID-97-D002
February 1997
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Preliminary
KA7307D CDS/AGC
20-SOP-300
unit: mm
VID-97-D002
February 1997
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