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參數資料
| 型號： | LA7672 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP52 |
| 封裝： | SDIP-52 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 119K |
| 代理商： | LA7672 |
LA7672
No. 4265-3/6
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Audio-visual Switches]
Video Output DC Voltage
V38
Quiescent
3.0
3.4
3.8
V
Internal Video Input Voltage
V42
Quiescent
4.4
4.8
5.2
V
External Video Input Voltage
V40
Quiescent
4.4
4.8
5.2
V
External Audio Input Voltage
V3
Quiescent
5.2
5.6
6.0
V
[SIF AF]
SIF Limiting Voltage
Vi lim
SIF output level for detection output at –3dB
40
47
dB
FM Detection Output Voltage
VO1
Vi = 100dB,
f = ±25kHz
380
550
750
mVrms
FM Detection Output Distortion Ratio
THD
Vi = 100dB,
f = ±25kHz
0.4
1.0
%
AM Rejection
AMR
Vi = 100dB, FM :
f = ±25kHz
40
60
dB
AM : 30 %
AF Amplifier Voltage Gain
GAF
Vi = 100mVrms, f = 400Hz
18
20
22
dB
AF Maximum Output Voltage
VO6 max
Output level for AF amplifier
2.0
2.8
Vrms
output distortion at 10%
AF Electronic Attenuator Range
ATT
Vi = 200mVrms, f = 400Hz
70
80
dB
[Video]
Black Enhancement Threshold
BSTH
APL variable
40
50
60
IRE
Maximum Black Enhancement Gain
BS max
APL variable
–35
–27
–20
IRE
Soft Video Tone Variable Range
Soft
f = 2MHz, 100mVp-p
–6
–4
–2
dB
video tone VR: 4V
→ 0V
Sharp Video Tone Variable Range
Sharp
f = 2MHz, 100mVp-p
7
10
13
dB
video tone VR: 4V
→ 9V, contrast VR: 6V
Video Voltage Gain Audio-visual
GV9V
f = 100kHz, 100mVp-p, contrast VR: 9V,
15
18
21
dB
Switch 9V
video tone VR: 4V
Video Voltage Gain Audio-visual
GV0V
f = 100kHz, 100mVp-p, contrast VR: 0V,
15
18
21
dB
Switch 0V
video tone VR: 4V
Contrast Control Center
CCEN
f = 100kHz, 100mVp-p, contrast
0.4
0.48
0.57
Vp-p
VR: 6V
Contrast Variable Control Range
CV
Contrast VR: 3V
→ 9V
18
20
22
dB
B RH
Bright VR: 1.5V
5.5
6.5
7.5
V
Bright Control
B RCEN
Bright VR: 4.5V
2.3
2.8
3.3
V
B RL
Bright VR: 7V
0.3
1.2
V
DL Off Frequency Characteristics
fV 9V
Contrast VR: 6V, video tone
7
9
MHz
VR: 4V, 3dB down
DL On Frequency Characteristics
fV 0V
Contrast VR: 6V, video tone
2.5
3
MHz
VR: 4V, 3dB down
DC Transmission
RDC
Input: stair step signal, 500mVp-p
100
103
106
%
Delay Line Delay
TDL
Input: white 100%
290
340
390
ns
[Chroma]
ACC Amplitude Characteristics
ACC1
+6dB
–3
0
+3
dB
ACC2
–20dB
–7
+2
dB
ACC Phase Characteristics
ACCP1
+6dB
–3
0
+3
deg
ACCP2
–20dB
–7
+7
deg
Killer Operation Point
EK
–35
–28
–21
dB
Color Control Color Residual
EC min
Color VR: 0V, contrast VR: 9V
30
mVp-p
Color Control Center
EC CEN
Color VR: 4.5V, contrast VR: 6V
1.2
1.8
2.4
Vp-p
Maximum Demodulation Output
EC max
Color VR: 9V, contrast VR: 9V
3.2
4.0
Vp-p
Color Contrast Variable Range
CC
Color VR: B – Y = 2.5Vp-p,
17.5
19.5
21.5
dB
contrast VR: 3V
→ 9V
Tint Control Center
TCEN
Tint VR: 4.5V, color VR: 4.5V,
0
12
24
deg
contrast VR: 6V
Tint Variable Range
T
Tint VR: 0V
← 4.5V → 8V,
±40
deg
color VR: 4.5V, contrast VR: 6V
APC Pull-in Range
fAPC
±300
Hz
R/B
Monochrome signal, contrast VR: 6V,
0.81
0.90
0.98
Demodulator Output Ratio
color VR: B – Y = 1Vpo
G/B
Monochrome signal, contrast VR:6V,
0.24
0.30
0.38
color VR: B – Y = 1Vpo
Continued on next page.
Continued from preceding page.
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