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參數資料
| 型號： | LA7391AN |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP42 |
| 封裝： | SDIP-42 |
| 文件頁數： | 4/11頁 |
| 文件大小： | 157K |
| 代理商： | LA7391AN |
Operating Characteristics at Ta=25 °C, VCC = 5.0 V
Parameter
Symbol
Input Output
Conditions
min
typ
max
Unit
[REC Mode Y]
Current drain REC
ICCR
When VCC = 5 V (when there is no signal),
measure sum of incoming current at pins 35
and 28
95
120
145
mA
AGC adjustment
CAGC
T37A
VIN = 1.0 Vp-p video signal, use VR39 to
adjust T4 output to 0.5 Vp-p
VCA control characteristics
VCA
T37A
T4
Measure T4 output level when S10 is set to 2
0.48
0.5
0.52
Vp-p
AGC adjustment voltage
VAGC
T37A
T39
Measure T39 DC voltage in above state
3.2
3.4
3.6
V
AGC detection voltage
VAD
T37A
T38
Measure T38 DC voltage in same manner
1.2
1.4
1.6
V
EE output level
VEE
T37A T34A Measure T34A output level in same manner
0.95
1.00
1.05
Vp-p
AGC Output 1
AGC 1
T37A
T4
VIN = 2.0 Vp-p video signal
Measure T4 output level
500
540
560 mVp-p
AGC Output 2
AGC 2
T37A
T4
VIN = 0.5 Vp-p video signal
Measure T4 output level
470
490
500 mVp-p
AGC Output 3
AGC 3
T37A
T4
VIN = 700 mVp-p LUMI, 600 mVp-p SYNC
Measure T4 SYNC level
135
150
165 mVp-p
AGC Output 4
AGC 4
T37A
T4
VIN = 700 mVp-p LUMI, 150 mVp-p SYNC
Measure T4 SYNC level
70
85
100 mVp-p
Sync separation output level
VSYR
T37A
T32
VIN = 1.0 Vp-p video signal,
Measure T32 output pulse wave high value
4.0
4.2
4.4
Vp-p
Sync separation output
pulse width
PWSYR
T37A
T32
VIN = 1.0 Vp-p video signal,
Measure T32 output pulse width
4.4
4.7
5.0
s
Sync separation output
leading edge delay time
TSYR
T37A
T32
VIN = 1.0 Vp-p video signal, measure delay
time of output SYNC versus input SYNC
0.6
0.8
1.0
s
Sync separation threshold
level
THSYR
T37A
T32
Gradually attenuate the input level, measure
input level at point when output pulse width
widens 1 s or more beyond PWSYR
–18
–14
dB
Sync tip level,
pedestal level,
white level measurement
(REC)
LVOR
T37A
T34
Measure electric potential for each of the T34
video output sync tip, pedestal, and white
peak, and assign the measured values to
LSYN,LPED, and LWHI, respectively
Pseudo V insertion level
(REC)
VDR
T37A
T34
Measure T34 DC voltage when5Vis applied
to T33, and assign the measured value to
LVDR and calculate the difference with LSYN
VDR=LSYN –LVDR
–80
0
80
mV
Pseudo H insertion level
(REC)
HDR
T37A
T34
Measure T34 DC voltage when 2.7 V is
applied to T33, and assign the measured
value to LHDR and calculate the difference
with LPED
HDR=LPED –LHDR
–200
–100
0
mV
White insertion level (REC)
WHR
T37A
T34
Measure T34 DC voltage when 1.3 V is
applied to T33, and assign the measured
value to LWHR and calculate the difference
with LWHI
WHR=LWHI –LWHR
150
250
350
mV
VCA detection voltage
VVCA
T37A
T9
Measure T9 DC voltage
3.1
3.4
3.7
V
REC YNR operation
EP/LP
VR-YNR
T37A
T3
VIN = white 50% + CW
(15.8 mVp-p) ratio between 32fH component
and 32.5fH component
3.5
4.5
5.5
dB
Y-LPF frequency
characteristics
YLPF 1
T37A
T3
VIN = standard multiburst signal 1 Vp-p,
2 MHz response to 500 kHz at T3
0.2
0.7
1.2
dB
YLPF2
T37A
T3
VIN = standard multiburst signal 1 Vp-p,
4.8 MHz response to 500 kHz at T3
–4.5
–3.5
–2.5
dB
YLPF3
T37A
T3
VIN = standard multiburst signal 1 Vp-p,
2 MHz response to 500 kHz at T3, T22A: 5 V
0.4
0.9
1.4
dB
YLPF4
T37A
T3
VIN = standard multiburst signal 1 Vp-p,
4.8 MHz response to 500 kHz at T3, T22A: 5
V
–5.0
–4.0
–3.0
dB
FM modulator output level
VFM
T40
No input, use VR42 to adjust output
frequency to 4 MHz, measure output level
0.8
1.0
1.2
Vp-p
FM modulator secondary
distortion
HMOD
T40
Ratio of 8 MHz component to 4 MHz in the
above state
–40
–35
dB
Continued on next page.
LA7391AN
No. 3951-2/11
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