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KA7305
GENERAL DESCRIPTION
The KA7305 is a monolithic integrated circuit for B/W CCD camera 1 chip signal processor. It contains functional block from CDS to video driver and 2 comparators for EE mode. Also, it performs a low power onsumption and a small dimension of set implementation by decreasing external parts as a 1 chip.
B/W CCD PROCESSOR
48-QFP-0707
FEATURES
* 5 Steps sample & hold. * 4 dB ~ 32 dB AGC gain control. * Built in 2 comparators for EE mode control. * EE mode WND / BLK selectable. * Gamma = 0.45 / Linear output separation. * Built in OP-AMP for AGC loop. * 3 Mode set-up control. * 2 Mode white / clip control. * 75 Ohm video driver & sag compensation.
ORDERING INFORMATION
Device KA7305 Package 48-QFP-0707 OperatingTemperature -20C ~ +75C
BLOCK DIAGRAM
9 7 DUMMY CLAMP 8 34 WIN/ BLK
1
4
3
2
48
41 42 + AGC AMP -
46
45
44
40
6 + OP AMP LUM DET 39 37 38
SAMPLE & HOLD
OB CLP
16 35 32 31 30 29
OB CLP
+ EE AMP GAMMA r=0.45
LIN
17 33
+ COMP + COMP 5 27 28 20 OB CLP
SET-UP CONTROL
WHITE CLIP
LUM & SYNC MIX
VIDEO DRIVE
26 19
43
18
21
22
23
24
25
36
KA7305
PIN CONFIGURATION
B/W CCD PROCESSOR
VIDEO OUT
IRIS OUT
IRIS CLP
CP1(+)
CP2(+)
CP1(-)
GND4
VCC3
CP2(-)
36 35 34 33 32 31 30 29 28 27 26 25
DET OUT 37 OP(+) OP(-) OP OUT
38 39 40
EEI
SAG
24 23 22 21 20
EE2
BLK SYNC W/C SET-UP VIDEO IN GND3 OUT LINEAR WIN/BLK N.C N.C N.C
AGCONT 41 AGCMAX 42 CLP1 CLP IN N.C VCC2
43 44 45
KA7305 B/W CCD PROCESSOR
19 18 17 16 15 14 13
AGC OUT 46
47 48 1 2 3 4 5 6 7 8 9 10 11 12
GND1
GND2
VCC1
SHP1
SHP2
DATA
CLP3
SHD
N.C
N.C
N.C
PG
KA7305
PIN
No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
B/W CCD PROCESSOR
DESCRIPTION
Symbol VCC1 SHP1 SHD SHP2 GND1 GND2 PG DATA CLP3 N.C N.C N.C N.C N.C N.C WIN/BLK LINEAR OUT GND3 VIDEO IN SET-UP W/C SYNC BLK SAG VIDEO OUT EE2 EE1 CP2(-) CP2(+) CP1(-) CP1(+) GND4 IRIS OUT IRIS CLP VCC3 DET OUT OP(+) OP(-) OP OUT AGCONT AGCMAX CLP1 CLP IN AGC OUT N.C VCC2 I/O I I I I I I I O O I I I I I I O O O I I I I O O I I O I I I I O Description Power supply Precharge sample & hold pulse Data sample & hold pulse Precharge sample & hold pulse Ground Ground CCD signal input CCD singal input Dummy clamp pulse No connection No connection No connection No connection No connection No connection Window/Blank pulse Linear out Gamma out Ground Video driver input signal Set - up level control White - clip level control Composite sync pulse Composite blank pulse Sag compensation Composite video signal output EE more comparator output 2 EE more comparator output 1 EE more comparator2 - input EE more comparator2 + input EE more comparator1 - input EE more comparator1 + input Ground IRIS detect output IRIS clamp Power supply AGC detect output AGC OP AMP input (+) AGC OP AMP input (-) AGC OP AMP output AGC gain control AGC maximum gain control Optical black level clamp pulse Gamma clamp Gamma input AGC output signal No connection Power supply Remark Active high Active high Active high
Active high
Active high
Active high
KA7305
ABSOLUTE MAXIMUM RATINGS
Characteristics Power Supply Voltage Power Dissipation Operating Temperature Storage Temperature (Ta = 25C) Symbol VCC Pd Topr Tstg (VCC = 5V,
B/W CCD PROCESSOR
Value 7 500 -20 ~ +75 -65 ~ +150 Ta = 25C) Min 4.75 30 30 8 2.25 1.8 1.1 8 1.6 510 Typ 5.00 45 18 4 32 10 2.55 2.0 1.3 10 2.6 610
Unit V mW C C
ELECTRICAL CHARACTERISTICS
Characteristics Operating Voltage Supply Current AGC Max Min Gain AGC Cont Min Gain AGC Cont Max Gain AGC Cont 10dB AGC Out D.C Detect Out D.C Iris Out D.C Iris Amp Gain Linear Amp Gain Gamma Output Level Symbol VCC ICC G46a G46b G46c G46d V46 V37 V34 G34 G17 V18
Test Condition AGC Max = 4V, Data In = 100mA AGC Cont = 1.5V AGC Cont = 5V, Data In = 500mV AGC Max = 0V, Data In = 30mV AGC Cont = 1.5V AGC Max = 0V, Data In = 320mV AGC Cont = 3.55v
Max 5.25 60 20 6 12 2.85 2.2 1.5 12 3.6 710
Unit V mA dB dB dB dB V V V dB dB mVP-P
In = 500mVP-P ( VCC = 5V, Ta = 25C)
ELECTRICAL CHARACTERISTICS
Characteristics Video Amp Gain Sync Level Set - Up Level 1 Set - Up Level 2 Set - Up Level 3 Set - Up Level 4 White - Clip Level 1 White - Clip Level 2 White - Clip Level 3 OP - Amp Dynamic Range EE Comparator & Level EE Comparator & Level Symbol G26 Vsync Vset1 Vset2 Vset3 Vset4 Vwe1 Vwe2 Vwe3 Dop Vch Vcl
Test Condition
S/U Cont = 0V S/U Cont = 5V S/U Cont = 1.75V S/U Cont = 3.3V S/U Cont = 0V S/U Cont = 2V S/U Cont = 5V Vin (+) = 2.6V, Vin (+) = 2.5V, Vin (-) = 2.5V Vin (-) = 2.6V Ta = -20C ~ +75C) Test Condition 5% 5% 5% 5% 5%
Min 5.7 26.3 -15 0 80 780 1000 3.3 4.5 -
Typ 6.0 286 0 20 -25 130 820 300 1300 -
Max 6.3 309 +15 40 -3 860 600 1.2
Unit dB mVP-P mVP-P mVP-P mVP-P mVP-P mVP-P mVP-P mVP-P VP-P V V
TEMPERATURE CHARACTERISTICS (VCC = 5V,
Characteristics AGC out D.C Detect out D.C EE AMP out D.C AMP out Sync level Symbol V46 V37 V34 V18 Vsy
Unit V V V mVP-P mVP-P
KA7305
ELECTRICAL CHARACTERISTIC CURVE
AGC CONTROL vs AMP GAIN
GAIN (dB) 40 GAIN (dB) 40
B/W CCD PROCESSOR
AGC MAX vs AMP GAIN
30
30
20
20
10
10
0 0 1 2 3 4 5 AGC CONT(V)
0 0 1 2 3 4 AGC MAX 5 (V)
S/U CONT vs S/U LEVEL
SET-UP 130 LEVEL (mV) 120 W/C LEVEL (mV) 1000 80
W /C CONT vs W/C LEVEL
----800 40 600 --0 -400
- 40 0 1 2 3 4 5 SET-UP CONT(V)
0 0 1 2 3 4 W/C CONT 5 (V)
GAMMA INPUT vs OUTPUT
r OUTPUT LEVEL 800 (mV)
600
400
200
0 0 200 400 600 800 1000 r INPUT (mV)
KA7305
B/W CCD PROCESSOR
TEST INPUT/OUTPUT SIGNAL WAVEFORM
INPUT TERMINAL INPUT SIGNAL
Pin7,8(PG,DATA) Pin45(r IN)
Pin20(VIDEO IN)
Pin23(SYNC)
5us 15us 50us
Pin24(BLK)
Pin43(CLP1)
2us
Pin9(CLP3)
2us
OUTPUT TERMINAL
Pin46(AGC OUT)
OUTPUT SIGNAL
--------------------------Pin18(r OUT)
--------------------------Pin17(LINEAR)
--------------------------Pin37(DET OUT)
--------------------------Pin34(IRIS OUT)
--------------------------Pin26(V. OUT)
---SYNC LEVEL
---------------------------
KA7305
B/W CCD PROCESSOR
TEST CIRCUIT
104
CP1 ( + )
CP2 ( + )
CP1 ( - )
CP2 ( - )
5V VCC3 A
IRIS CLP
IRIS OUT
GND4
VIDEO OUT
36 DET OUT OP ( + ) OP ( - ) OP OUT AGCONT AGCMAX CLP1 104 CLP IN AGC OUT N.C 5V VCC2 A V V 37 38 39 40 41 42 43 44 45 46 47 48 1 VCC1
35
34
33
32
31 30
29
28
27
26
SAG 25 24 23 22 21 20 BLK SYNC W/C SET - UP VIDEO IN GND3 V V OUT 19 18 17 LINEAR 16 15 14 13 WIN / BLK N.C N.C N.C 12 N.C
EE1
KA7305 B / W PROCESSOR
2 SHP1
3 SHD
4 SHP2
5 GND1
6 GND2
7 PG
8 DATA
9 CLP3
EE2
10 N.C
11 N.C
A
5V
5V
: VARIABLE VOLTAGE
104
104
104
A : AMPERE METER : ANALOG GND : DIGITAL GND
: SIGNAL GENERATOR
V
: VOLT METER
V
V
V
V
KA7305
B/W CCD PROCESSOR
APPLICATION CIRCUIT
5V 5V 100 103 12H 22pF 50K 10K 50K 10K
+
22H POWER SUPPLY 10F /16V 5V
2SK300 3.9K
CCD KC73125 - M
5V
+
KDS226 1K AGC OUT AGCMAX AGCONT DET OUT
1K
+
22F /16V
47pF
OP OUT
OP ( + )
VCC2
CLP1
OP ( - )
2.2K
100K 10K
37
N.C
CLP
IN
5V 104 1K KSC1623 22F 820 /16V
+
48
47
46
45
44
43
42
41
40
39
38
VCC1
1
VCC3 IRIS CLP IRIS OUT GND4 CP1 ( - ) CP1 ( + ) CP2 ( - ) CP2 ( + ) EE1
36
SHP1 SHD
35
2 3 4 5
34
SHP2 GND1 GND2 1F/16V PG +
+
KSC1623
33 32
1K
KA7305 B / W PROCESSOR
31
6 7 8 9 10 11 12 13 14 15 16 17
30
DATA
29
1F/16V CLP3 N.C N.C N.C
28 27 26 25
50K EE2 VIDEO. OUT SAG
+
50K
10F /16V 10F /16V
75 VIDEO OUT 10K
+
18
19
20
21
22
23
24
47pF 2.2K
SYNC
SET - UP
BLK
2.2K 2.2K
104
N.C
N.C
N.C
WIN / BLK
GND3
VIDEO. IN
N/C
LINEAR
OUT
1M
1M
10K 2.2K
KS7212 TIMING & SYNC GEN
2.2K 47pF 47pF 47pF
2.2K
50K 50K
KA7305
PACKAGE DIMENSION
B/W CCD PROCESSOR
48-QFP-0707
_ 9.00 + 0.30 _ 7.00 + 0.20
Unit : mm
0~ 8
0.1 3 +0 - .1
0.0 0 5
9.00 + 0.30
7.00 + 0.20
# 48
#1 _ 0.18 + 0.10 0.50 0.1 MAX
( 0.75 )
0.00 MIN 1.40 _ 0.10 + 1.6 MAX
0.50 + 0.20
_
_
0.10 MAX
_

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