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PDF NJM2527 Data sheet ( Hoja de datos )
| Número de pieza | NJM2527 | |
| Descripción | COLOR TFT SIGNAL PROCESSOR | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJM2527
COLOR TFT SIGNAL PROCESSOR
s GENERAL DESCRIPTION
The NJM2527 is a color TFT signal processor.
It contains all function, like as Y/C separator circuit, color signal
de-modulator, synchronous separate circuit, RGB interface, and
sideblack control circuit, required by color TFT signal processing.
The NJM2527 keeps selecting NTSC/PAL with external VCXO
circuit TRAP circuit for each broadcasting.
s PACKAGE OUTLINE
NJM2527FR2
s FEATURES
q NTSC/PAL matching (Resemblance PAL de-modulation system)
q Internal Y/C separate circuit
q Input mode: Composite video signal, Y/C separate signal, External RGB signal
www.DataSqhIenetet4rnUa.lcsoymnchronous separate circuit (Liquid crystal panel PLL use)
q Internal black level insertion circuit (Use for aspect ratio change)
q Internal Gamma 2-point correction circuit
q Bipolar technology
q Package Outline QFP48-R2
s BLOCK DIAGRAM
GDET 1
GOUT 2
BDET 3
BOUT 4
FRP 5
48 47 46 45 44 43 42 41 40 39 38 37
1/2*VCC
2
GAMMA
CONTROL
GAMMA
CORRECT
GAMMA
CORRECT
GAMMA
CORRECT
GND1 6
SW 7
YCLAMP 8
HSYIN 9
SYNCOUT 10
MASK
BGPGE
N
SYNCIN 11
SYNCSE
P
REGOUT 12
REG
VCXO
13 14 15 16 17 18 19 20 21 22 23 24
s PIN CONFIGURATION
1 . GDET
25.VCXOIN(PAL)
2 . GOUT
26.VCXOOUT(PAL)
3 . BDET
27.PICTURE
4 . BOUT
28.VIDEOIN
5 . FRP
29.TRAP
36 GACLAMPR
6 . GND1
30.VCC1
35 EXTING
7 . SW
8 . YCLAMP
31.CONTRAST
32.GACLAMPB
34 GACLAMPG
33 EXTINB
9 . HSYIN
10.SYNCOUT
11.SYNCIN
33. EXTINB
34. GACLAMPG
35. EXTING
32 GACLAMPB
12.REGOUT
13.CIN
36. GACLAMPR
37.EXTINR
31 CONTRAST
14.ACCDET
38. VG1
30 VCC1
15.FADJ
16.KILLER
39. VG2
40. SUBVG1R
29 TRAP
17.CLEANING
18.IDENT
41. SUBVG1B
42. SUBVG2R
28 VIDEOIN
19.TINT
43. SUBVG2B
27 PICTURE
20.COLOR
21.PALPHASE
44. SIDEBLACK
45. BRIGHT
26 VCXOOUT(PAL)
25 VCXOIN(PAL)
22.VCXOIN(NTSC)
23.VCXOOUT(NTSC)
24.APC
46.VCC2
47. RDET
48. ROUT
Ver.3
-1-
1 page  
NJM2527
s ELECTRICAL CHARACTERISTICS
(Ta=25°C,VCC1=5V, VCC2=5V,TP20=TP31=TP45=2.5V,
TP19=2.8V,TP7=5V,TP38=1V,TP39=3V,TP44=0V,SW13=SW7=L)
PARAMETER
APC Capture Range
(Input Composite
Signal, PAL)
www.DataSAhPeCetC4aUp.tcuoremRange
(Input Y/C Signal, PAL)
SYMBOL
fA5
fA6
fA7
fA8
TEST CONDITION (TP=IC Pin No.)
SG11 applied to TP9, SG2 applied to
TP11, TP19=0, SG6 (4.43361875,
300mVpp typical swing) applied to
TP13 or TP28. This item is
Difference between the input
frequency and 4.43361875 MHz at
work out 2V of TP16 voltage by
variable the BURST frequency.
fA5=when approach BURST
frequency from low frequency.
fA6= when approach BURST
frequency from high frequency
at
SW13=H,TP13(B)=0V,VIDEOIN=SG6
fA7=when approach BURST
frequency from low frequency.
fA8= when approach BURST
frequency from high frequency
at SW13=L,TP13=SG6
MIN.
-
+700
-
+700
Composite→Y/C
Input Switching
Voltage
VTHCY
SG3 (700mVpp, 3.579545MHz)
applied to TP28, SG2 applied to
TP11, SG11 applied to TP9.
SW13=H, TP13 (B) voltage at
change Y/C to composite by raise on
TP13 (B) voltage.
1.3
Y/C→Composite
Input Switching
Voltage
VTHYC
SG3 (700mVpp, 3.579545MHz)
applied to TP28, SG2 applied to
TP11, SG11 applied to TP9,
SG10 applied to TP5,
SW13=H, TP13 (B) Voltage at
change composite to Y/C by drop on
TP13 (B) voltage.
0.7
TINT Variable Range
NTSC /PAL
Switching Voltage
ΘT1
ΘT2
VTHNP
SG6 (3.579545MHz, 300mVpp)
applied to TP13, SG2 applied to
TP11, SG11 applied to TP9.
The Θ1 was controlled input phase
so that output swing of TP2
maximum at TP19=1.6V. The each
Θ2 and Θ3 were the controlled input
phase so that output swing of TP2
maximum at TP19=2.8V, 4.0V.
ΘT1=Θ2-Θ1
ΘT2=Θ2-Θ3
SG6 (3.58MHz, 300mVpp) applied to
TP13, SG2 applied to TP11,
SG11 applied to TP9.This item
TP19 voltage at change from NTSC
to PAL at down TP19 voltage.
+30
-
0.4
TYP.
-2900
+1500
-2900
+1500
1.6
1.0
+45
-45
0.7
MAX.
-700
-
-700
-
1.9
1.3
-
-30
1.0
UNIT
Hz
Hz
V
V
deg
V
Ver.3
-5-
5 Page 
NJM2527
s ELECTRICAL CHARACTERISTICS
(Ta=25°C,VCC1=5V, VCC2=5V,TP20=TP31=TP45=2.5V,
TP19=2.8V,TP7=5V,TP38=1V,TP39=3V,TP44=0V,SW13=SW7=L)
PARAMETER
SYMBOL
TEST CONDITION (TP=IC Pin No.)
Demodulation
Relativity Phase
(R-Y/B-Y)
Demodulation
Relativity Phase
(G-Y/B-Y)
Demodulation Output
www.DataShreeseitd4uUa.lcCoamrrier
ΘRB
ΘGB
VCR
SG6 (3.58MHz, 300mVpp) applied to
TP13, SG10 applied to TP5, SG2
applied to TP11, SG11 applied to
TP9. TP38=1.5V,TP39=3.0V,vary the
chroma phase on SG6, define the phase
at maximum output amplitude of TP48,
TP2, TP4 as ΘR,ΘG,ΘB.
ΘRB=ΘR-ΘB
ΘGB=ΘG-ΘB
SG6 (3.58MHz, 300mVpp) applied to
TP13, DC5V applied to TP5, SG2
Applied to TP11, SG11 applied to
TP4, adjust the chroma phase on SG6
for maximum the amplitude of TP4.
Measure the ratio of 7.159059MHz
component to the 15.734kHz component.
MIN.
-
-
-
TYP. MAX. UNIT
90 -
deg
240 -
-40 -
dB
Ver.3
- 11 -
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NJM2527.PDF ] | |
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