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參數資料
| 型號： | LA7437A |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| 封裝： | SDIP-42 |
| 文件頁數： | 3/8頁 |
| 文件大小： | 224K |
| 代理商： | LA7437A |
No. 5473-3/8
LA7437, 7437A
Parameter
Symbol
Conditions
min
typ
max
Unit
[Record Mode Y System]
Pseudo-H insertion level
HDR
With 2.7 V applied to T19A
–300
–200
–100
mV
White insertion level
WHR
With 1.3 V applied to T19A
150
300
450
mV
VCA detection voltage
VVCA
2.95
3.10
3.25
V
Record YNR operation EP/LP
VR-YNR1
Input: 50 Hz system standard color bar signal
10
12
14
mVp-p
Y-LPF frequency characteristics 1
YLPF1
The 1 MHz attenuation with respect to 500 kHz
–0.5
0.0
+0.5
dB
Y-LPF frequency characteristics 2
YLPF2
The 2 MHz attenuation with respect to 500 kHz
–1.0
0.0
+1.0
dB
Y-LPF frequency characteristics 3
YLPF3
The 3.25 MHz attenuation with respect to 500 kHz
–6
–4
–2dB
Y-LPF frequency characteristics 4
YLPF4
The 4.43 MHz attenuation with respect to 500 kHz
–33
–25
dB
FM modulator output level
VFM
No input
1.0
1.2
1.4
Vp-p
Carrier frequency 1
FFM1
50 Hz system
3.7
3.8
3.9
MHz
FM modulator output 2nd
HMOD
–40
–35
dB
harmonic distortion
Deviation 1
DEV1
50 Hz system
0.95
1.00
1.05
MHz
FM modulator linearity
LMOD
–20
2
%
1/2 fH carrier shift
CS
6.5
7.8
9.1
kHz
Emphasis gain
GEMP
Input: 0.5 Vp-p, 10 kHz sine wave
–0.5
0.0
0.5
dB
NL emphasis characteristics 1
GNLEMP1
Input: 500 mVp-p, 2 MHz sine wave
0.5
1.4
2.3
dB
NL emphasis characteristics 2
GNLEMP2
Input: 158 mVp-p, 2 MHz sine wave
2.6
3.8
5.2
dB
NL emphasis characteristics 3
GNLEMP3
Input: 50 mVp-p, 2 MHz sine wave
4.9
6.4
7.9
dB
Main emphases characteristics 1
GME1
Input: 100 mVp-p, 500 kHz sine wave
4.9
5.2
5.5
dB
Main emphases characteristics 2
GME2
Input: 100 mVp-p, 2 MHz sine wave
13.1
13.6
14.1
dB
White clipping level
LWC
Input: 1.0 Vp-p, white 100% video signal
176
185
194
%
Dark clipping level
LDC
Input: 1.0 Vp-p, white 100% video signal
–55
–50
–45
%
[Playback Mode Y System]
Playback mode current drain
ICCP
135
160
185
mA
Dropout compensation time
TDOC
0.72
0.85
0.98
ms
DOC loop gain
GDOC
5H later
–1.0
0.0
+1.0
dB
Playback Y level
VVOUT
For playback of an FM signal with a 1.0 MHz deviation
2.0
2.1
2.2
Vp-p
FM demodulator linearity
LDEM
2, 4, 6 MHz
–3.5
0.0
+3.5
%
Demodulation sensitivity
SDEM
0.43
0.48
0.53
V/MHz
Carrier leakage
CL
Input: 4 MHz, 600 mVp-p
–40
–35
dB
Playback YNR characteristics
GP-YNR1
Input: 50% white + CW
–2.5
–3.0
–3.5
dB
LP/EP
NL de-emphasis characteristics 1
GNLDE1
Input: 158 mVp-p, 2 MHz sine wave
–6.0
–5.0
–4.0
dB
NL de-emphasis characteristics 2
GNLDE2
Input: 50 mVp-p, 2 MHz sine wave
–10.5
–9.0
–7.5
dB
Double noise canceller
GWNC1
Input: 158 mVp-p, 2 MHz sine wave
–1.8
–1.3
–0.8
dB
characteristics 1
Double noise canceller
GWNC2
Input: 50 mVp-p, 2 MHz sine wave
–6.2
–5.2
–4.2
dB
characteristics 2
Double noise canceller
GWNC3
Input: 15.8 mVp-p, 2 MHz sine wave
–11.7
–10.7
–8.7
dB
characteristics 3
PIC-CTL hard response
GPH1
Input: 50% video + sine wave f = 1 MHz, 158 mVp-p
4.0
5.0
6.0
dB
characteristics 1
PIC-CTL hard response
GPH2
Input: 50% video + sine wave f = 2 MHz, 158 mVp-p
6.5
7.5
8.5
dB
characteristics 2
PIC-CTL soft response
GPS1
Input: 50% video + sine wave f = 1 MHz, 158 mVp-p
–4.5
–3.5
–2.5
dB
characteristics 1
PIC-CTL soft response
GPS2
Input: 50% video + sine wave f = 2 MHz, 158 mVp-p
–9.0
–7.0
–5.0
dB
characteristics 2
Pseudo-V insertion level
VDP
With 5 V applied to T19A
–150
–50
+50
mV
(playback)
Pseudo-H insertion level
HDP
With 2.7 V applied to T19A
–300
–200
–100
mV
(playback)
Continued on next page.
Continued from preceding page.
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