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LA7191N Datasheet(PDF) 3 Page - Sanyo Semicon Device

Part No. LA7191N
Description  Global VHS-format VCR Video Signal Processor
Download  11 Pages
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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 3 page
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Continued from preceding page.
Parameter
Symbol
Input Output
Conditions
min
typ
max
Unit
FM modulator modulation
sensitivity
SMOD
T4
T40
Measure amplitude of change in output
frequency when 2.6 V DC or 3.1 V DC is
applied to T4, 2 x (f3.1 – f2.6)
1.6
2.0
2.4
MHz/V
FM modulator linearity
LMOD
T4
T40
Measure output frequency when 2.85 V DC
applied to T4,
LMOD =
f2.85 – (f3.1 + f2.6)/2
SMOD
x 100
–2
0
+2
%
1/2 fH carrier shift
CS1
T40
Measure amplitude of change in output
frequency when SW41B is off and SW41A is
switched from on to off
6.8
7.8
9.5
kHz
CS2
T40
Measure amplitude of change in output
frequency when SW41B is on and SW41A is
switched from on to off
6.8
7.8
9.5
kHz
Emphasis gain
GEMPH
T4A
T5
VIN = 0.5 Vp-p 10 kHz sine wave
Measure ratio of levels of input and output
amplitude at T5
–0.5
0
+0.5
dB
Detail enhancer
characteristics
GENH1
T4A
T5
VIN = 158 mVp-p 2 MHz sine wave
Measure ratio of levels of T5 and T4,
difference with GEMPH
0.9
1.4
1.9
dB
GENH2
T4A
T5
VIN = 50 mVp-p 2 MHz sine wave
Measure ratio of levels of T5 and T4,
difference with GEMPH
2.2
3.2
4.2
dB
GENH3
T4A
T5
VIN = 15.8 mVp-p 2 MHz sine wave
Measure ratio of levels of T5 and T4,
difference with GEMPH
4.0
5.0
6.0
dB
GENH4
T4A
T5
VIN = 15.8 mVp-p 2 MHz sine wave
Measure output amplitude at T5 in edit mode,
difference with GEMPH
1.8
2.8
3.8
dB
Nonlinear emphasis
characteristics
GNLEMP1
T4A
T5
VIN = 500 mVp-p 2 MHz
Measure ratio of levels of T5 and T4,
difference with GEMPH
0.5
1.4
2.3
dB
GNLEMP2
T4A
T5
VIN = 158 mVp-p 2 MHz
Measure ratio of levels of T5 and T4,
difference with GEMPH
2.6
3.8
5.2
dB
GNLEMP3
T4A
T5
VIN = 50 mVp-p 2 MHz
Measure ratio of levels of T5 and T4,
difference with GEMPH
4.9
6.4
7.9
dB
Main linear emphasis
characteristics
GME1
T4A
T5
VIN = 50 mVp-p 200 kHz sine wave
Measure ratio of levels of T5 and T4,
difference with GEMPH
4.9
5.2
5.5
dB
GME2
T4A
T5
VIN = 50 mVp-p 2 MHz
Measure ratio of levels of T5 and T4,
difference with GEMPH
13.1
13.6
14.1
dB
White clipping level
LWC
T4A
T5
VIN = 500 mVp-p white 100% video signal
Measure white clipping level at T5
186
193
200
%
Dark clipping level
LDC
T4A
T5
VIN = 500 mVp-p white 100% video signal
Measure dark clipping level at T5
–60
–55
–50
%
Non-linear emphasis
characteristics SP
NLE-SP
T4A
T5
Same as GNLEMP3
3.0
4.0
5.0
dB
[PB Mode Y]
Current drain PB
ICCP
Incoming current at pins 35 and 28 when
VCC = 5.0 V
125
155
185
mA
Dropout compensation
period
TDOC
T39A
T4A
T34A T39A: 4 MHz, 300 mVp-p sine wave
T4A: 0.5Vp-p video signal
T34A: time from when input went to 0 until
T34A output returned, SW10
→ 1
0.35
0.5
0.65
ms
DOC loop gain
GDOC
T39A
T4A
T12
T39A: 4 MHz, 300 mVp-p sine wave
T4A: 0.5Vp-p video signal
T39A: Input/output response when 5H have
elapsed after input went to 0, SW10
→ 3
–1.0
0
+1.0
dB
FM demodulation voltage
VDEM4
T39A
T3
VIN=300 mVp-p,f=4 MHz, Output DC
voltage
1.5
2.0
2.5
V
FM demodulation sensitivity
SDEM
T39A
T3
VIN = 300 mVp-p,f=2 MHz, VDEM2
VIN = 300 mVp-p,f=6 MHz, VDEM6
Calculate SDEM =(VDEM6 –VDEM2)/4
0.36
0.45
0.54 V/MHz
Continued on next page.
LA7191N
No. 5471 - 3/11




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