SONY CXA1812Q

CXA1812Q
S-terminal Compatible Video I/O
Description
The CXA1812Q is an IC developed for processing
video I/O signals in VCRs. This IC has a built-in
video output circuit designed especially for use with
viewfinders (VF), making this IC optimal for use in
camcorders. In addition, both the video input
system and the viewfinder video output system
provide title insertion functions, making it possible to
insert characters and graphics into video signals.
Features
• Built-in video output circuit for use with viewfinders
(title insertion function (white or black character),
compatible with SY/C and composite video output)
• Built-in C system EE/PB switch
EE : Electric-Electric monitor mode
• Title insertion function (white or black character)
• C MUTE function for playback in PAL mode
(Outputs C signal used for generating the
composite video signal)
• Built-in switch for switching between the two input
systems, Y and C
• Built-in 75 Ω driver for the two input systems, Y
and C
(with power saving function)
32 pin QFP (Plastic)
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC
7
V
• Operating temperature Topr
–20 to +75
°C
• Storage temperature
Tstg –65 to +150 °C
• Allowable power dissipation
PD
450
mW
Operating Conditions
• Supply voltage
• Supply voltage range
VCC
VCC
4.75
4.5 to 5.25
V
V
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E93701A79-TE
CXA1812Q
YIN1
VOB1
EVFCOUT
VOW1
EVFY/VOUT
VOW
YOUT1
24
23
22
21
20
19
18
17
6dB
12dB
BUFF
INSEL
Block Diagram and Pin Configuration
CLAMP
YIN2 25
16
VOB
CLAMP
GND
26
DDS1
CIN1 27
Y/VSEL
BUFF
MUTE1
28
CLAMP
CIN2 29
YOUTGND
14
VCC
13
YIN
12 P.SAVE
MUTE2
30
YOUT 31
15 COUT1
DDS2
CLAMP
DRIV
11
EVFYIN
10
SEL1
MUTE3
COUT2
CMUTE
—2—
5
6
7
8
COUTVCC
4
CIN
3
SEL2
2
COUT
1
VREG
DRIV
BUFF
9
COUTGND
YINVIN
32
YOUTVCC
CXA1812Q
∗Externally applied voltage
Pin Description
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
1
COUTGND
0 V∗
—
Chroma 75 Ω driver GND.
2
VREG
4V
—
4 V internal regular output.
Connect a decoupling capacitor.
Do not use for external bias.
Description
200
VCC
60µ
3
COUT2
Chroma signal output used for
generating a composite video signal.
3
2.2 V
GND
143mVp-p
314mVp-p
120µ 150µ
VCC
20µ
4
CMUTE
0V
4
72k
150
GND
VCC
Control input used for muting both the
chroma signals that are input to Pins 27
(CIN1) and 29 (CIN2) and pass through
the EE path, as well as the chroma
signal that is input from Pin 7 (CIN).
Low (0 to 0.8 V) : normal operation
High (2 V to VCC) : mute
Chroma 75 Ω driver output.
660µ
COUT
2.2 V
5
5.3k
5
16k
2.2V
660µ 1.2m
GND
VCC
20µ
SEL2
0V
6
150
72k
6
GND
—3—
572mVp-p
1.256Vp-p
Control input used for switching
between the signals input to Pins 27
and 29 and the signal input to Pin 7.
Low (0 to 0.8 V) :
signal at Pin 7 is selected
High (2 V to VCC) :
signals at Pins 27 and 29 are selected
CXA1812Q
∗Externally applied voltage
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
Description
VCC
CIN
—
7
150 20p
50k
7
Video output chroma signal input.
Coupled by means of a capacitor within
the IC.
Inputting a signal of –0.3 V or less may
lead waveform distortion.
80µ
2.2V
GND
143mVp-p
314mVp-p
8
COUTVCC
4.75 V∗
—
Chroma 75 Ω driver power supply.
9
YOUTVCC
4.75 V∗
—
Y 75 Ω driver power supply.
10
SEL1
0V
Control input used for switching the
signals that are input from Pins 11
(EVFYIN) and 13 (YIN).
Low (0 to 0.8 V) :
signal at Pin 13 is selected
High (2 V to VCC) :
signal at Pin 11 is selected
Same as for Pin 6.
200
VCC
11
EVFYIN
2.5 V
(Sync tip)
Y signal input for viewfinder.
Coupled by means of a capacitor ; in
order to keep clamp error to a
minimum, keep the input impedance as
low as possible.
11
1100
0.5Vp-p
1µ
50µ
GND
VCC
P. SAVE
0V
12
150
72k
12
15k
20µ
GND
—4—
2.5V
Control input for power saver. When in
power saving mode, the Y and C 75 Ω
drivers stop operating. The output of
Pin 31 (YOUT) and Pin 5 (COUT) goes
to high impedance.
Low (0 to 0.8 V) : normal operation
High (2 V to VCC) : power saving mode
CXA1812Q
∗Externally applied voltage
Pin
No.
13
Symbol
YIN
Pin
voltage
Equivalent circuit
2.5 V
(Sync tip)
Description
Video output Y signal input.
Coupled by means of a capacitor; in
order to keep clamp error to a
minimum, keep the input impedance as
low as possible.
Same as for Pin 11.
0.5Vp-p
2.5V
Power supply other than the 75 Ω
driver.
Video input chroma signal output.
14
VCC
4.75 V∗
—
15
COUT1
2.2 V
Same as for Pin 3.
143mVp-p
VCC
20µ
VOB
0V
16
150
72k
16
GND
90µ
17
YOUT1
Control input for black level insertion of
the Y signals input to Pins 23 (YIN1)
and 25 (YIN2). The chroma signals
input from Pins 27 and 29 are also
muted simultaneously.
Low (0 to 0.8 V) : normal operation
High (2 V to VCC) : insertion mode
Video input Y signal output.
200
VCC
314mVp-p
1.8 V
(Sync tip)
17
GND
0.5Vp-p
1.8V
180µ 250µ
18
VOW
0V
Same as for Pin 4.
—5—
Control input for white level insertion of
the Y signals input to Pins 23 and 25.
The chroma signals input from Pins 27
and 29 are also muted simultaneously.
This pin takes precedence over the Pin
16 control signal.
Low (0 to 0.8V) : normal operation
High (2 V to Vcc) : insertion mode
CXA1812Q
∗Externally applied voltage
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
Description
VCC
180µ
5.3k
19
1.8 V
EVFY/VOUT (Sync tip)
Y and composite video signal output for
the viewfinder. A composite video
signal is output when Pin 28 (Y/VSEL)
is high.
19
16k
1Vp-p
2.1V
360µ 800µ
20
VOW1
GND
Same as for Pin 4.
0V
100µ
EVFCOUT
2.2 V
20k
21
200
VCC
21
20k
1.8V
Control input for white level insertion of
the Y and composite video signals for
the viewfinder (output from Pin 19).
The chroma signal for the viewfinder
output from Pin 21 (EVFCOUT) is also
muted simultaneously. This pin takes
precedence over the Pin 22 (VOB1)
control signal.
Low (0 to 0.8 V) : normal operation
High (2 V to VCC) : insertion mode
Chroma signal output for the
viewfinder. When Pin 28 is high, the
output amplifier goes into power saving
mode and Pin 21 goes to high
impedance.
2.2V
200µ 300µ
GND
286mVp-p
22
VOB1
0V
Same as for Pin 6.
—6—
628mVp-p
Control input for black level insertion of
the Y and composite video signals for
the viewfinder. The chroma signal for
the viewfinder is also muted.
Low (0 to 0.8 V) : normal operation
High (2 V to VCC) : insertion mode
CXA1812Q
∗Externally applied voltage
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
Description
200
VCC
23
25
YIN1
YIN2
2.5 V
(Sync tip)
Video input Y signal inputs. Coupled
by means of a capacitor; in order to
keep clamp error to a minimum, keep
the input impedance as low as
possible.
23
1100
25
0.5Vp-p
1µ
40µ
GND
2.5V
VCC
20µ
24
INSEL
0V
20µ
24
72k
150
GND
26
27
29
GND
CIN1
CIN2
0 V∗
—
Control input for switching between
signals input from Pins 23 and 25 and
from Pins 27 and 29.
Low (0 to 0.8 V) :
signals at Pins 23 and 27 are selected
High (2 V to VCC) :
signals at Pins 25 and 29 are selected
GND other than the 75 Ω driver.
—
Same as for Pin 7.
Video input chroma signal inputs.
Coupled by means of a capacitor within
the IC.
Inputting a signal of –0.3 V or less may
lead waveform distortion.
143mVp-p
28
Y/VSEL
0V
Same as for Pin 6.
30
YOUTGND
0 V∗
—
Control input for switching the output
signal format for Pin 19.
Pin 19 output
Pin 21 output
Low : Y signal
Chroma signal
High : Composite
High impedance
video signal
Low (0 to 0.8 V)
High (2 V to VCC)
Y 75 Ω driver GND.
—7—
314mVp-p
CXA1812Q
∗Externally applied voltage
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
Description
Y 75 Ω driver output.
31
YOUT
1.3 V
(Sync tip)
2Vp-p
VCC
800µ
1.3V
2.7k
31
32
YINVIN
1.3 V
(Sync tip)
32
8k
Y 75 Ω driver feedback input.
1.2V
1.2m 1.5m
0.5Vp-p
GND
1.3V
—8—
Bias voltage adjustment
Current consumption 1
Current consumption 2
Current consumption PS
VREG voltage
0
1
2
3
4
Secondary distortion
VOB1 level
VOW1 level
DDS1 cross talk
7
8
9
10
—9—
Frequency response
Secondary distortion
Output D range
13
14
15
Gain
Frequency response
Secondary distortion
VOB2 level
VOW2 level
DDS2 cross talk
Input SW cross talk
16
17
18
19
20
21
22
EVF Y output
Gain
12
Y output
Input SW cross talk
Frequency response
6
11
Gain
5
Y input
Item
No.
23, 25
23, 25
VOW1
CTD117
CTSE19
CTD219
VOW2
VOB2
HD19
F19
G19
V31
HD31
F31
G31
357 mVp-p, 5 MHz G (5 M)/G (300 k)
357 mVp-p, 5 MHz V (10 M)/V (5 M)
31A
31A
31A
13
13
357 mVp-p, 5 MHz G (5 M)/G (300 k)
357 mVp-p, 5 MHz V (10 M)/V (5 M)
357 mVp-p, 5 MHz G (CT)/G (5 M)
357 mVp-p, 5 MHz G (CT)/G ( 5M)
19
19
19
19
19
19
11, 13
11, 13
11, 13
11, 13
11, 13
11, 13
difference between input and Sync tip
500 mVp-p (Y100 %),
difference between input and Sync tip
500 mVp-p (Y100 %),
357 mVp-p, 300 kHz G (300 k)
19
11, 13
(Y150 %) input
Output amplitude for 679 mVp-p
357 mVp-p, 300 kHz G (300 k)
31A
357 mVp-p, 5 MHz G (CT)/G (5 M)
357 mVp-p, 5 MHz G (CT)/G (5 M)
difference between input and Sync tip
500 mVp-p (Y100 %),
difference between input and Sync tip
13
17
17
17
17
500 mVp-p (Y100 %),
357 mVp-p, 5 MHz V (10 M)/V (5 M)
17
No signal
2
357 mVp-p, 5 MHz G (5 M)/G (300 k)
No signal
ICC
357 mVp-p, 300 kHz G (300 k)
No signal
ICC
17
No signal
ICC
17
Adjust VADJ pin to 2.85 V with RV
Measurement conditions
VADJ
point
rement
Measu
O
2
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
11 13 23 25
SW SW SW SW SW
(O → ON)
SW conditions
0.8
2.0
∗3
∗7
0.8 0.8
∗6 ∗6
2.0 0.8
2.0
4.75 0.8 0.8 ∗4 0.8 0.8 0.8 0.8 0.8 0.8 ∗5
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.8 0.8
∗2 ∗2
0.8 2.0
2.0
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 ∗1 0.8
0.8
2.0
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
VCC E4 E6 E10 E12 E16 E18 E20 E22 E24 E28
Bias conditions (Unit : V)
3.90
780
320
–0.5
5.5
1.20
–0.75
5.5
390
160
–0.5
–53
–57
820
360
–51
0
6.0
1.34
–54
–0.25
6.0
–53
–74
410
180
–54
0
0
4.05
9.5
–0.5
24.0
16.0
15.0
—
25.0
—
Typ.
16.0
Min.
860
400
0.5
6.5
0.25
6.5
430
200
0.5
0.5
4.20
22.5
34.0
35.0
—
Max.
dB
dB
mV
mV
dB
dB
dB
Vp-p
dB
dB
dB
dB
dB
mV
mV
dB
dB
dB
V
mA
mA
mA
—
Unit
(Ta=25 °C, VCC=4.75 V, refer to the electrical characteristics measurement circuit.)
13
23, 25
23, 25
VOB1
CTIN17
23, 25
HD17
—
VREG
23, 25
—
23, 25
—
ICC2
ICCPS
F17
—
ICC1
G17
—
pins
Input
VADJ
Symbol
Electrical Characteristics
CXA1812Q
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
Input SW cross talk
25
26
27
28
29
30
—10—
Input SW cross talk
SEL2 SW cross talk
39
Gain
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
Input SW cross talk
SEL2 SW cross talk
40
41
42
43
44
45
46
47
48
C EE 2
MUTE cross talk
Secondary distortion
35
38
Frequency response 3
34
37
Frequency response 2
33
MUTE level
Frequency response 1
32
36
Gain
31
C EE 1
Gain
24
Item
23
C input 1
No.
CTSE3A
CTIN3A
CTM3A
M3A
HD3A
F33A
F23A
F13A
G3A
CTSE5A
CTIN5A
CTM5A
M5A
HD5A
F35A
F25A
F15A
G5A
CTIN15A
CTM15A
M15A
HD15A
F315A
F215A
F115A
G15A
Symbol
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
pins
Input
3
3
3
3
3
3
3
3
3
5A
5A
5A
5B
5A
5A
5A
5A
5A
15
15
15
15
15
15
15
15
point
rement
Measu
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V(8.86 M)/V (4.43M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G(CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V(8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
Measurement conditions
2
11 13 23 25
SW SW SW SW SW
(O → ON)
SW conditions
∗9
0.8
0.8 0.8
∗10 ∗10
0.8
∗10
0.8
0.8 0.8
∗10 ∗10
–70
–60
∗8
–57
0
–53
0
0
0
–0.3
∗9
–15
–0.5
–0.5
–0.5
–78
∗8
–57
0
–60
0
0
0
5.7
–66
–57
0
–55
0
0
0
–0.3
Typ.
–66
–0.8
–60
–0.5
–0.5
–0.5
5.2
–15
–0.5
–0.5
–0.5
–0.8
Min.
∗9
4.75 0.8 2.0 0.8 0.8 0.8 0.8 0.8 0.8 ∗8 0.8
0.8
∗10
4.75 0.8 2.0 0.8 0.8 0.8 0.8 0.8 0.8 ∗8 0.8
0.8 0.8
∗2 ∗2
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 ∗8 0.8
VCC E4 E6 E10 E12 E16 E18 E20 E22 E24 E28
Bias conditions (Unit : V)
15
0.5
0.5
0.5
0.2
60
0.5
0.5
0.5
6.2
15
0.5
0.5
0.5
0.2
Max.
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
Unit
CXA1812Q
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
Input SW cross talk
SEL2 SW cross talk
51
52
53
54
55
56
57
—11—
MUTE cross talk
Input SW cross talk
SEL2 SW cross talk
Y/V SW cross talk
64
65
66
67
Gain
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
SEL2 SW cross talk
68
69
70
71
72
73
74
75
C output 1
MUTE level
Frequency response 3
61
63
Frequency response 2
60
Secondary distortion
Frequency response 1
59
62
Gain
58
C EE V 1
Gain
50
Item
49
C EE EVF 1
No.
CTSE5B
CTM5B
M5B
HD5B
F35B
F25B
F15B
G5B
CTYV19A
CTSE19A
CTIN19A
CTM19A
M19A
HD19A
F319A
F219A
F119A
G19A
CTSE21A
CTIN21A
CTM21A
M21A
HD21A
F321A
F221A
F121A
G21A
Symbol
7
7
7
7
7
7
7
7
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
27, 29
pins
Input
5A
5A
5B
5A
5A
5A
5A
5A
19
19
19
19
19
19
19
19
19
19
21
21
21
21
21
21
21
21
21
point
rement
Measu
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
Measurement conditions
2
11 13 23 25
SW SW SW SW SW
(O → ON)
SW conditions
0.8
2.0
0.8
0.8 2.0
2.0
5.2
–60
–0.5
–0.5
–0.5
–74
–72
0
–53
0
0
0
5.7
–54
–55
∗8
–53
0
–56
0.8
–30
–52
0
0
0
5.7
0.8 0.8 0.8 0.8 ∗9
∗11 ∗11 ∗11 ∗11
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.8
∗11
–0.5
–0.5
–0.5
–70
∗8
–58
0
–52
0
0
0
5.7
Typ.
–67
5.2
–30
–0.5
–0.5
–0.5
5.2
Min.
0.8 0.8 0.8 0.8 ∗9
∗11 ∗11 ∗11 ∗11
4.75 0.8 2.0 0.8 0.8 0.8 08 0.8 0.8 ∗8 2.0
0.8
∗11
4.75 0.8 2.0 0.8 0.8 0.8 0.8 0.8 0.8 ∗8 0.8
VCC E4 E6 E10 E12 E16 E18 E20 E22 E24 E28
Bias conditions (Unit : V)
60
0.5
0.5
0.5
6.2
30
0.5
0.5
0.5
6.2
30
0.5
0.5
0.5
6.2
Max.
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
Unit
CXA1812Q
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
SEL2 SW cross talk
78
79
80
81
82
83
—12—
SEL2 SW cross talk
Gain
Frequency response 1
Frequency response 2
Frequency response 3
Secondary distortion
MUTE level
MUTE cross talk
SEL2 SW cross talk
Y/V SW cross talk
92
93
94
95
96
97
98
99
100
C EVF output 2
MUTE cross talk
Secondary distortion
88
91
Frequency response 3
87
90
Frequency response 2
86
MUTE level
Frequency response 1
85
89
Gain
84
C EVF output 1
Gain
77
Item
76
C output 2
No.
CTYV19B
CTSE19B
CTM19B
M19B
HD19B
F319B
F219B
F119B
G19B
CTSE21B
CTM21B
M21B
HD21B
F321B
F221B
F121B
G21B
CTSE3B
CTM3B
M3B
HD3B
F33B
F23B
F13B
G3B
Symbol
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
pins
Input
19
19
19
19
19
19
19
19
19
21
21
21
21
21
21
21
21
3
3
3
3
3
3
3
3
point
rement
Measu
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
DC differential when mute is off
314 mVp-p, 4.43 MHz V (8.86 M)/V (4.43 M)
314 mVp-p, 5.5 MHz G (5.5 M)/G (3.58 M)
314 mVp-p, 4.43 MHz G (4.43 M)/G (3.58 M)
314 mVp-p, 2.5 MHz G (2.5 M)/G (3.58 M)
314 mVp-p, 3.58 MHz G (3.58 M)
Measurement conditions
2
11 13 23 25
SW SW SW SW SW
(O → ON)
SW conditions
0.8 0.8
∗12 ∗12
0.8
0.8 2.0
∗12
0.8 0.8
∗12 ∗12
0.8
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 2.0
0.8 2.0
∗12
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.8 2.0
2.0
4.75 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
VCC E4 E6 E10 E12 E16 E18 E20 E22 E24 E28
Bias conditions (Unit : V)
–30
–0.5
–0.5
–0.5
5.2
–30
–0.5
–0.5
–0.5
5.2
–15
–0.5
–0.5
–0.5
–0.8
Min.
–57
–67
–63
0
–54
0
0
0
5.7
–60
–55
0
–50
0
0
0
5.7
–77
–69
0
–53
0
0
0
–0.3
Typ.
30
0.5
0.5
0.5
6.2
30
0.5
0.5
0.5
6.2
15
0.5
0.5
0.5
0.2
Max.
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
Unit
CXA1812Q
Item
Symbol
pins
point
rement
Measu
Measurement conditions
29
7, 27
29
7, 27
29
7, 27
23, 25
11, 13
23, 25
11, 13
23, 25
11, 13
23, 25
11, 13
31A
19
17
21
15
5A
3
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
314 mVp-p, 4.43 MHz G (CT)/G (4.43 M)
357 mVp-p, 5 MHz G (CT)/G (4.43 M)
357 mVp-p, 5 MHz G (CT)/G (4.43 M)
357 mVp-p, 5 MHz G (CT)/G (4.43 M)
357 mVp-p, 5 MHz G (CT)/G (4.43 M)
2
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
11 13 23 25
SW SW SW SW SW
(O → ON)
SW conditions
∗15 0.8
2.0
0.8
4.75 0.8 2.0 ∗13 0.8 0.8 0.8 0.8 0.8 ∗14 0.8
VCC E4 E6 E10 E12 E16 E18 E20 E22 E24 E28
Bias conditions (Unit : V)
Min.
0.8 V for Pin 23 input; 2.0 V for Pin 25 input
With E16 and E18=0.8 V or 2.0 V, measure in all combination modes except for E16=E18=0.8 V
2.0 V for Pin 23 input; 0.8 V for Pin 25 input
0.8 V for Pin 13 input; 2.0 V for Pin 11 input
0.8 V for Y/C output; 2.0 V for V output
With E20 and E22=0.8 V or 2.0 V, measure in all combination modes except for E20=E22=0.8 V
2.0 V for Pin 13 input; 0.8 V for Pin 11 input
0.8 V for Pin 27 input; 2.0 V for Pin 29 input
2.0 V for Pin 27 input; 0.8 V for Pin 29 input
With E4, E16 and E18=0.8 V or 2.0 V, measure in all combination modes except for E4=E16=E18=0.8 V
With E4, E16, E18, E20 and E22=0.8 V or 2.0 V, measure in all combination modes except for E4=E16=E18=E20=E22=0.8 V
With E4, E20 and E22=0.8 V or 2.0 V, measure in all combination modes except for E4=E20=E22=0.8 V
2.0 V for Pin 11 input; 0.8 V for all others
0.8 V for Pins 25 and 29 input; 2.0 V for all others
0.8 V for Pin 7 input; 2.0 V for all others
CTYC31C
107
∗1.
∗2.
∗3.
∗4.
∗5.
∗6.
∗7.
∗8.
∗9.
∗10.
∗11.
∗12.
∗13.
∗14.
∗15.
CTYC19C
CTYC17C
106
C input
CTYC21Y
104
105
CTYC15Y
103
CTYC3Y
CTYC5Y
Y input
102
101
Cross talk between Y and C (These measurement items are performed with the reference inputs.)
No.
Input
–58
–45
–60
–51
–55
–54
–55
Typ.
Max.
dB
dB
dB
dB
dB
dB
dB
Unit
CXA1812Q
—13—
RV
50k
4V
S2
OP AMP
VADJ
SG25
TP31A
75
75
S25
10µ
330
1k
75
SG29
75
SG27
10k
75
30
29
28
27
26
25
2.2µ
32
31
220µTP32
TP31B
E28
TP25
DRIV
1
CLAMP
CLAMP
24
E24
10µ TP21
3
10µ
TP3
TP2
2
MUTE2
E22
TP23
23
22
21
S23
75
75
75
TP5A
7
18
E18
17
TP17
8
SG7 75 47µ
TP5B E6
100µ
5
6
MUTE1
DDS1
DDS2
20
19
TP19
E20
MUTE3
E4
4
6dB
10k
BUFF
—14—
DRIV
12dB
SG23
BUFF
Electrical Characteristics Measurement Circuit
0.047µ
CLAMP
CLAMP
BUFF
9
10
11
12
13
14
15
16
47µ
0.047µ
E10
TP11
E12
TP13
0.047µ
47µ
E16
10µ
10µ
75
75
S11 10k
S13 10k
TP15
VCC
A ICC
SG11
SG13
CXA1812Q
75
75
75
75
330
2.2µ
220µ
1Vp-p
32
31
30
29
28
27
26
25
286mVp-p 628mVp-p
75
1k
0.47µ
0.47µ
DRIV
1
CLAMP
CLAMP
24
2
23
MUTE2
22
10µ
3
21
4
DDS1
MUTE3
DDS2
75
19
0.01µ
5
6
MUTE1
20
47µ
7
18
17
8
0.047µ
CLAMP
CLAMP
BUFF
9
10
11
12
13
14
15
16
VCC
(TYP : 4.75V)
47µ
0.047µ
0.47µ
47µ
0.047µ
0.5Vp-p
143mVp-p 314mVp-p
Main Signal
Processing Block
0.5Vp-p
143mVp-p 314mVp-p
Control Block
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
39
39
39
39
143mVp-p 314mVp-p
Camera
Signal
Processing
Block
0.5Vp-p
Viewfinder Signal
Processing Block
1Vp-p
6dB
1Vp-p
or
DRIV
—15—
BUFF
12dB
286mVp-p 628mVp-p
BUFF
Application Circuit
CXA1812Q
CXA1812Q
Description of Operation
(Refer to the Pin Description for details on the standard I/O signal levels and the control logic.)
From extemal camera signal processing block
• Video Input System
INSEL
VOB
VOW
24
16
18
YIN1
23
CLAMP
YOUT1
L
Y input system
YIN2
DDS 1
H
17
BUFF
CLAMP
25
To video signal
processing block
CIN1
27
L
C input system
CIN2
MUTE 1
15
BUFF
H
COUT1
29
To C output system (EE)
and VFC output system
The Y signals input to Pins 23 (YIN1) and 25 (YIN2) are clamped by the respective sync tips, and one of the
signals is selected by the control signal input to Pin 24 (INSEL). Titles are inserted by the control signals input
to Pins 16 (VOB) and 18 (VOW), and after passing through the buffer the signal is output from Pin 17
(YOUT1). Regarding the title insertion levels, the white level is approximately 75IRE and the black level is
approximately 10IRE. Title insertion is described in detail later.
Just as with the Y signals, one of the C signals input to Pins 27 (CIN1) and 29 (CIN2) is selected by the control
signal at Pin 24. The signal is muted to the chroma center level by the control signals at Pins 16 and 18, and
after being branched to EE output, the signal passes through the buffer and is output from Pin 15 (COUT1).
• Video Output System
YIN
13
YOUT
CLAMP
220µ
Y output system
From the video
signal processing
block
To VFY output system
32
YINVIN
To VFC output system
L
CIN
1k
2.2µ
External
330 video
output
0.01µ
75
From C input system(EE)
MUTE 3
75
31
DRIV
5
DRIV
H
COUT
7
C output system
3
BUFF
COUT2
6
SEL2
4
CMUTE
—16—
12
P.SAVE
To composite
video signal
generation circuit
CXA1812Q
The Y signal input to Pin 13 (YIN) is clamped by the sync tip and is then branched to the Y output system and
the VFY output system. The signal sent to the Y output system passes through the 75 Ω driver (gain=12 dB)
and is then output from Pin 31 (YOUT).
Either the C signal input from Pin 7 (CIN) or the C signal for EE output that was branched from the C input
system is selected by the control signal input to Pin 6 (SEL2). After the signal is muted to the chroma center
level by the control signal input to Pin 4 (CMUTE), the signal is branched to the VFC output system and is also
passed through the 75 Ω driver (gain=12 dB), after which it is output from Pin 5 (COUT). The signal is also
output from Pin 3 (COUT2) for composite video signal generation. The role of Pin 3 is explained in more detail
later.
When Pin 12 (P.SAVE) is set high, it is power saving mode. At this time, the Y and C 75 Ω drivers cease
functioning and the outputs go to high impedance.
• VF Video Output System
SEL1
10
VOB1 VOW1
22
Y/VSEL
28
20
EVFYIN
11
CLAMP
H
L
DDS 2
L
YIN
13
EVFY/VOUT
CLAMP
12dB
19
To Y output system
CMUTE
H
4
EVFCOUT
SEL2
6dB
6
CIN
21
MUTE 2
To VF block
7
L
H
MUTE 3
To C output system
From C input system (EE)
The Y signals input to Pins 13 and 11 (EVFYIN) are clamped by the respective sync tips, and one of the
signals is selected by the control signal input to Pin 10 (SEL1). When the video signal required for the
viewfinder is different from the signal input to Pin 13, the necessary signal is input from Pin 11. Titles are
inserted by the control signals input to Pins 22 (VOB1) and 20 (VOW1). Just as in the video input system,
regarding the title insertion levels, the white level is approximately 75IRE and the black level is approximately
10IRE. Either this Y signal or the post-Y/C MIX composite video signal is selected by the control signal input
to Pin 28 (Y/VSEL), and then the signal passes through the 12 dB amplifier and is output from Pin 19
(EVFY/VOUT). When Pin 28 is high, the post-Y/C MIX composite video signal is selected. At the same time,
the 6 dB amplifier (for C output) stops functioning in order to reduce the amount of current consumption. At
this time, the output from Pin 21 (EVFCOUT) goes to high impedance.
The C signal for the viewfinder that was branched from the C output system is muted to the chroma center
level by the control signals input to Pins 22 and 20. This signal is input to the Y/C MIX circuit in order to
generate the composite video signal for the viewfinder; the signal is also passed through the 6 dB amplifier and
is output from Pin 21.
—17—
CXA1812Q
• Title Insertion Function (Timing Relationships)
When VOW/VOW1 is high, the Y signal
replaces from the pedestal level to an
electric potential of 75IRE (white character);
when VOB/VOB1 is high, the Y signal
Y signal
replaces from the pedestal level to an
electric potential of 10IRE (black character).
The C signal replaces to the chroma center
VOW
electric potential when VOW/VOW1 or VOW1
VOB/VOB1/CMUTE is high.
Because VOW/VOW1 have precedence, VOB
VOW/VOW1 going high results in the VOB1
insertion of white character even if CMUTE
VOB/VOB1 is high. If the settings are as
depicted in the diagram at right, white C signal
character can be bordered with black.
100 IRE
10 IRE
140 IRE
75 IRE
Bolder
section
• Relationship between Signal Flow and the Title Insertion function, and the Role of Pin 3
Title insertion 2 is performed by a Y/C main
signal processing IC. Although no problem <Relationship between the title insertion position and the inserted signal>
arises in NTSC system, in the case of PAL
REC
Y, C, V
VF
system, because it is necessary to connect a
color spectrum compensation IC with a delay
output
output
output
element between the Y/C main signal
Title insertion 1
O
O
O
processing IC and the CXA1812Q, if the title
Title insertion 2
X
O
O
is inserted in the Y/C main signal processing
Title insertion 3
X
X
O
IC, a temporal deviation occurs in the title
insertion position for Y and C. This problem
is resolved by using MUTE 3 in the C system
only. In addition, because a C signal
processed with MUTE 3 and with no
temporal deviation is output from Pin 3, the
composite video signal can be obtained by
mixing this signal with the Y signal.
<Positioning of the title insertion function within the overall flow of video signal processing>
Title insertion 1
Y input
DDS 1
C input
MUTE 1
REC
output
Y output
C output
DDS
MUTE 3
DDS 2
VF output
MUTE 2
Color spectrum
compensation IC
(required in PAL
system)
Includes delay element
MUTE
Title
insertion 2
Pin 3
Composite (V) output
Title insertion 3
CXA1812Q
Y/C main signal processing IC
—18—
PB
input
CXA1812Q
Notes on Operation
• Cross talk may become severe, depending on the power supply and the ground connections, and on the
substrate pattern. The power supply and ground connections should be wired so that impedance is as low
as possible, and the signal lines should be located away from other lines.
• The power supply pins should be decoupled as closely as possible to the IC. Because Pin 14 (VCC) is the
main power supply for this IC, inadequate decoupling can result in a worsening of characteristics such as
distortion and cross talk. Pins 8 (COUTVCC) and 9 (YOUTVCC) are power supplies for the output stage of
the 75 Ω drivers, and inadequate decoupling can result in oscillation.
• If more than the necessary capacitance is connected to the output pins (Pins 3, 5, 15, 17, 19, 21, and 31),
oscillation may result. Wiring should be kept as short as possible.
• The frequency response of the Y 75 Ω driver can be controlled by external elements.
The frequency response is raised if capacitance is connected to Pin 32 (YINVIN) versus GND.
The frequency response is attenuated in the high frequency if capacitance is connected between Pin 31
(YOUT) and Pin 32.
• When Pin 6 (SEL2) is low, Pin 7 (CIN) and Pin 5 (COUT) have an input/output relationship, so that if more
than the necessary amount of capacitance is connected between these two pins, a loop may be formed and
oscillation may easily result. When designing the board, make sure that there is no parasitic capacitance
between Pins 7 and 5.
• Pins 7 (CIN), 27 (CIN1), and 29 (CIN2) are coupled within the IC. If a signal of –0.3 V or less is input, a
protective element may cause waveform distortion. When inputting a signal of –0.3 V or less, it is
recommended that a suitable DC bias be applied to the input signal.
—19—
CXA1812Q
Ambient temperature vs. Current consumption
Ambient temperature vs. VREG voltage
35
30
VREG voltage (V)
ICC-Current consumption (mA)
4.080
25
4.070
4.060
20
4.050
15
–25
0
25
50
75
Ta-Ambient temperature (°C)
100
–25
10
0
0
–10
–10
–20
–20
Vin=357mVp-p
Vin=314mVp-p
–30
–30
100k
1M
10M
100k
100M
10M
Frequency (Hz)
Input amplitude vs. Second distortion
(Y output system)
Input amplitude vs. Second distortion
(CEE system)
100M
–40
Second distortion (dB)
Second distortion (dB)
1M
Frequency (Hz)
–40
–50
–60
100
100
Frequency response (CEE system)
10
Gain (dB)
Gain (dB)
Frequency response (Y output system)
0
25
50
75
Ta-Ambient temperature (°C)
200
300
400
500
Input amplitude (mVp-p)
600
—20—
–50
–60
100
200
300
400
500
Input amplitude (mVp-p)
600
CXA1812Q
Input amplitude vs. Cross talk (EVF output system)
<SEL1 SW cross talk>
Input amplitude vs. Cross talk (CEE system)
<SEL2 SW cross talk>
–60
Cross talk (dB)
Cross talk (dB)
–40
–50
–60
–70
–80
100
200
300
400
500
Input amplitude (mVp-p)
600
100
Frequency vs. Secondary distortion (Y output system)
Vin=314mVp-p
Secondary distortion (dB)
Secondary distortion (dB)
600
–30
Vin=357mVp-p
–40
–50
–60
–70
–40
–50
–60
–70
2M
3M 4M 5M
Frequency (Hz)
7M
10M
1M
2M
3M 4M 5M
Frequency (Hz)
7M
10M
Frequency vs. Cross talk (CEE system)
<SEL2 SW cross talk>
Frequency vs. Cross talk (EVFY output system)
<SEL1 SW cross talk>
–30
–40
Vin=357mVp-p
Vin=314mVp-p
–50
Cross talk (dB)
–40
Cross talk (dB)
300
400
500
Input amplitude (mVp-p)
Frequency vs. Secondary distortion (CEE system)
–30
1M
200
–50
–60
–60
–70
–80
–70
1M
2M
3M 4M 5M
Frequency (Hz)
7M
10M
—21—
1M
2M
3M 4M 5M
Frequency (Hz)
7M
10M
CXA1812Q
Package Outline
Unit : mm
32PIN QFP (PLASTIC)
9.0 ± 0.2
24
0.1
+ 0.35
1.5 – 0.15
+ 0.3
7.0 – 0.1
17
16
32
9
(8.0)
25
1
+ 0.2
0.1 – 0.1
0.8
+ 0.15
0.3 – 0.1
0.24
M
+ 0.1
0.127 – 0.05
0° to 10°
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
QFP-32P-L01
LEAD TREATMENT
SOLDER PLATING
EIAJ CODE
QFP032-P-0707
LEAD MATERIAL
42 ALLOY
PACKAGE MASS
0.2g
JEDEC CODE
—22—
0.50
8