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PDF CXA1870S Data sheet ( Hoja de datos )
| Número de pieza | CXA1870S | |
| Descripción | Color TV Y/C/Jungle | |
| Fabricantes | Sony Corporation | |
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CXA1870S
Color TV Y/C/Jungle
For the availability of this product, please contact the sales office.
Description
The CXA1870S is a bipolar IC which integrates the
42 pin SDIP (Plastic)
NTSC color TV luminance signal processing,
chroma signal processing, sync signal processing,
and RGB signal processing onto a single chip.
Features
• I2C bus compatible. Various types of adjustments
and user controls performed with two bus lines
SCL and SDA.
• H and V oscillation frequencies made non-
adjusting with a countdown system.
• Non-adjusting Y system filters (chroma trap, delay
line)
• Built-in V picture distortion correction circuit
• Built-in delay line aperture compensation
• Auto cut-off function for automatic CRT cut-off
adjustment and compensation for changes with
time
• Multiple inputs
Composite video:
2 systems
(Built-in 2-input, 1-output video switch)
Y/C separation input: 1 system
On screen display input: 1 system
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC 12 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature
Tstg –65 to +150 °C
• Allowable power dissipation
PD 1.73 W
Recommended Operating Conditions
Supply voltage
VCC 9±0.5
V
Applications
• Color TV
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—
E95431-TE
1 page  
CXA1870S
Pin
Symbol
No.
Pin
voltage
6 SW OUT
—
Equivalent circuit
VCC
6
VCC
500
VCC
30k 12k
2k
25k
7 Y IN
3.5 V
VCC
1.2k
7
VCC
50k
Description
Video switch output pin.
Y signal input pin. Input via a
capacitor.
Standard input level: 2 Vp-p
VCC
VCC
VCC
8 A PED 3.5 V 8
16k
20k
1.2k
20k
VCC
Auto pedestal (black elongation)
black peak hold pin. Connect a
capacitor.
VCC
30k
9 C IN — 9
6k
30k
6k
10 V GND
—
Chroma signal input pin.
Standard input level (burst level):
570 mVp-p
Video system (Y/C/RGB) GND
pin.
—5—
5 Page 
CXA1870S
Electrical Characteristics
Setting conditions
• Ta = 25 °C VCC = 9 V
• I2C bus register should be set to “I2C Bus Register Initial Settings”.
No. Item
Current
1
consumption 1
Symbol
ICC1
Measurement Measurement
conditions
pin
Measurement method
3 Measure the VCC pin inflow current.
Min. Typ. Max. Unit
53 80 110 mA
H system items
No. Item
Symbol
Measurement Measurement
conditions
pin
Measurement method
2 Horizontal free
Hfree
running frequency
29
Horizontal sync
3
pull-in range
Video In: Sig-H2,H3
∆H
AFC: 0
Check that I2C register HLOCK is 1.
Video In: Sig-H6
t1: Video In: Time from
4 AFC gain 1
AFC: 0
AFCmax
Video In: Sig-H7
fall of Sig-H6 to rise of
31 AFCmax=t1-t2
Pin 31.
AFC: 0
Video In: Sig-H6
t2: Video In: Time from
5 AFC gain 2
AFC: 1
AFCcen
Video In: Sig-H7
fall of Sig-H7 to rise of
31 AFCcen=t1-t2
Pin 31.
AFC: 1
Video In: Sig-H6
6 AFC gain 3
AFC: 2
AFCmin
Video In: Sig-H7
31
AFCmin=t1-t2
AFC: 2
HD output pulse
7 HD, W Video In: Sig-H1
width
HD output
8
high level
HD, H Video In: Sig-H1
29
HD,H
HD,L
HD output
9
low level
HD, L Video In: Sig-H1
HD,W
Horizontal phase
Video In: Sig-Y11
10 HPHmax
operating range 1
HPHASE: F
Pin 20
Horizontal phase
Video In: Sig-Y11
11 HPHcen
operating range 2
HPHASE: 7
20
31
Pin 31
Horizontal phase
Video In: Sig-Y11
12 HPHmin
operating range 3
HPHASE: 0
HPH
HP blanking
13
delay time 1
HP blanking
14
delay time 2
HPBLK1
Video In: Sig-Y11
HPBLK2
20
31
Pin 20
Pin 31
HPBLK1
HPBLK2
Min. Typ. Max. Unit
15.60 15.78 15.96 kHz
–400 — 400 µs
0.12 0.3 0.48 µs
— 0.5 — µs
0.75 1.2 1.75 µs
24 26 28 µs
8.7 9 — V
0.5 0.8 1.1 V
–4.3 –3.3 –2.3 µs
–1.5 –0.5 0.5 µs
1.3 2.3 3.3 µs
— 100 — ns
— 100 — ns
HSS OUT
15
high level
HSS OUT
16
low level
17 Overvoltage
protection circuit VHT
HSS, H
HSS, L
XVTH
39
HSS,H
HSS,L
Check that HD appears at 2.4 V and
30
disappears at 2.8 V.
4 4.6 5 V
0 0.1 0.5 V
2.4 2.6 2.8 V
—11—
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXA1870S.PDF ] | |
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