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LA7357 Datasheet(PDF) 2 Page - Sanyo Semicon Device

Part # LA7357
Description  PAL/SECAM Discrimination Circuit for VHS VCRs
PDF  6 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA7357 Datasheet(HTML) 2 Page - Sanyo Semicon Device

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No. 5654-2/6
LA7357
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Current drain
ICC1
Pin 5 = ground, pin 7 influx current: T4 output
7.0
10.0
13.0
mA
ICC2
Pin 5 = VCC, pin 7 influx current: T4 output
7.5
10.5
13.5
mA
The pin 5 voltage when the pin 2 output
appears when slowly raising the voltage
BGP threshold level
BTH
applied to pin 5 from 0 V.
2.2
2.5
2.8
V
The input signal should be 300 mVp-p:
T2 output
The pin 5 voltage when the pin 2 output
appears when slowly lowering the voltage
SYNC threshold level
STH
applied to pin 5 from 5 V.
0.6
0.8
1.0
V
The input signal should be 300 mVp-p:
T2 output
Stipulated as the output ratio when a
Input limiter amplifier gain
LIMG
10 mVp-p amplitude sine wave is input to
9
12
15
dB
pin 1: T2 output
Measure the output amplitude when a
Input limiter amplifier level
LIMD
300 mVp-p amplitude sine wave is input to
150
190
230
mVp-p
pin 1: T2 output
The V1 level when T1 switches from low to
Comparator hysteresis high-level voltage
Comp H
high when slowly raising V1 from 0 V: T1
2.7
3.0
3.3
V
output
The V1 level when T1 switches from high to
Comparator hysteresis low-level voltage
Comp L
low when slowly lowering V1 from 5 V: T1
2.0
2.3
2.6
V
output
DET-OUT output high-level voltage
DETH
With a 2-k
Ω load: T1 output
3.6
4.0
4.4
V
DET-OUT output low-level voltage
DETL
With a 2-k
Ω load: T1 output
0
0.2
0.4
V
Operating Characteristics at Ta = 25°C, VCC = 5 V
Switching Conditions
Symbol
Input signal
Input pulse
Applied voltage
Switch states
S1
S2
S3
S4
V1
V2
SW1
SW2
SW3
SW4
SW5
ICC1
No signal
No signal
0 V
0 V
Off
Off
Off
Off
Off
ICC2
No signal
No signal
5 V
5 V
Off
Off
Off
Off
Off
BTH
Sig.1
No signal1
0 V
0 V
Variable DC level
On
Off
On
Off
Off
STH
No signal
Sig.1
0 V
0 V
Variable DC level
On
Off
On
Off
Off
LIMG
Sig.1
No signal
5 V
0 V
On
Off
Off
Off
Off
LIMD
Sig.1
No signal
5 V
0 V
On
Off
Off
Off
On
Comp H
No signal
No signal
No signal
No signal
Variable DC level
Off
On
Off
Off
On
Comp L
No signal
No signal
No signal
No signal
Variable DC level
Off
On
Off
Off
On
DETH
Sig.2
Sig.1
P2
P1
Off
Off
Off
Off
On
DETL
Sig.3
Sig.1
P2
P1
Off
Off
Off
Off
On



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