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参数资料
| 型号： | LA7688 |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP52 |
| 封装： | SHRINK, DIP-52 |
| 文件页数： | 4/6页 |
| 文件大小： | 106K |
| 代理商： | LA7688 |
No. 5635-4/6
LA7688
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Chrominance System PAL Block]
ACC amplitude characteristics 1
ACC1p
–2
+1
+4
dB
ACC amplitude characteristics 2
ACC2p
–4
0
+2
dB
Killer operating point
E KILp
–37
–30
–25
dB
Killer hysteresis
dE KILp
1
3
7
dB
RGB output level
E Bp
Chrominance: 50%, color: typical
4.1
4.6
5.1
Vp-p
Maximum RGB output
EBmaxp
Chrominance: 50%, color: maximum
5.4
5.9
6.4
Vp-p
APC pull-in range +
df scp+
500
Hz
APC pull-in range –
df scp–
–500
Hz
Demodulated output ratio B/R
B/Rp
1.50
1.78
2.00
double
Demodulated output ratio G/R
G/Rp
With no B-Y signal
–0.56
–0.51
–0.46
double
Demodulated output ratio G/B
G/Bp
With no R-Y signal
–0.21
–0.91
–0.17
double
Demodulation angle
RBp
85
90
95
deg
[Chrominance System NTSC Block]
ACC amplitude characteristics 1
ACC1n
–2
+1
+4
dB
ACC amplitude characteristics 2
ACC2n
–4
0
+2
dB
ACC phase characteristics 1
PCC1n
–3
0
+3
deg
ACC phase characteristics 2
PCC2n
–5
0
+5
deg
Killer operating point
E KILn
–40
–34
–29
dB
Killer hysteresis
dE KILn
1
4
8
dB
RGB output level
E Bn
Chrominance: 50%, color: typical
3.4
3.9
4.4
Vp-p
Maximum RGB output
EBmaxn
Chrominance: 50%, color: maximum
5.0
5.5
6.0
Vp-p
APC pull-in range +
df scn+
350
Hz
APC pull-in range –
df scn–
–350
Hz
Tint control variation range
dP TI
–33
+50
deg
Demodulated output ratio R
R/Bn
0.81
0.90
0.99
double
Demodulated output ratio G
G/Bn
0.24
0.30
0.36
double
Demodulation angle RB
RBn
95
105
115
deg
Demodulation angle GB
GBn
–130
–120
–110
deg
[RGB Block]
OSD input level
E OSD
Standard input, 100% white level
0.7
Vp-p
OSD input DC voltage
V OSD
With no signal
2.9
3.2
3.5
V
F-BLK input threshold level
V28TH
0.8
1.0
1.2
V
OSD output pedestal level difference
V OSDC
–0.3
0
+0.3
Vp-p
OSD output maximum
E OSDmax
4.3
4.8
5.3
Vp-p
OSD output minimum
E OSDmin
0.3
0.6
0.9
Vp-p
Character signal output frequency
BW OSD
5
7
MHz
characteristics
TV-OSD crosstalk (C-Y)
CT TVC
50
dB
OSD-TV crosstalk (C-Y)
CT OSDC
40
dB
Character signal inter-character crosstalk
CT OSD
30
dB
[DEF Block]
Vertical free-running period 50
TVFREE50
312.0
312.5
313.0
H
Vertical free-running period 60
TVFREE60
262.0
262.5
263.0
H
Vertical synchronization maximum period 50
TVmax50 Horizontal synchronizing signal only
356.5
357.0
357.5
H
Vertical synchronization maximum period 60
TVmax60 Horizontal synchronizing signal only
296.5
297.0
297.5
H
Vertical synchronization minimum period 50
TVmin50
268.5
269.0
269.5
H
Vertical synchronization minimum period 60
TVmin60
224.5
225.0
225.5
H
Vertical blanking peak value
VHVBL
0.6
1.0
V
Vertical blanking pulse width 50
PWBLK50
23
23.5
24
H
Vertical blanking pulse width 60
PWBLK60
19
19.5
20
H
Vertical output pulse width
PWVOUT
8.0
8.5
9.0
H
Vertical output voltage H
VOUTH
5.3
5.6
5.9
V
Vertical output voltage M
VOUTM
4.0
4.3
4.6
V
Vertical output voltage L
VOUTL
0.3
V
Continued on next page.
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