MAX845 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX845 Datasheet PDF : 16 Pages
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Isolated Transformer Driver
for PCMCIA Applications
78L05
ISO
5V
10µF
79L12
ISO
-12V
10µF
0.1µF
ANALOG
INPUT
0.1µF
10µF
MAX176
1
VDD
8
VSS
2
7
AIN CONVST
3
VREF
4
GND
6
CLOCK
5
DATA
0.1µF 10µF
3k
3k
470Ω
SIGNAL
GROUND
ISOLATION
BARRIER
1CT : 1.5CT : 3CT
VIN
5V INPUT
4 x 1N5817
10µF
6N136
8
7
6
5
6N136
8
7
6
5
1
6N136
2
3
4
1 D1
6 VCC MAX845
3
FS
8
D2
4
SD
ON/OFF
GND1 GND2
2
7
1
2 200Ω
3
4
1
2 200Ω
3
4
74HC04
8
7 8.2k
6
5
74HC04
START
INPUT CLOCK
QH 7
14
SER
QG 6
74HC595 QF 5
11
SCK
QE 4
QD 3
12
RCK
2
QC
QB 1
5V 10 SCLR
QA 15
INPUT
16
13
8
D11(MSB)
D10
D9
D8
5V
INPUT
0.1µF
8
QH′ QH 7
14
SER
QG 6
74HC595 QF 5
11
SCK
4
QE
QD 3
12
RCK
QC 2
1
QB
5V 10 SCLR
QA 15
INPUT
16
13
8
D7
D6
D5
D4
D3
D2
D1
D0 (LSB)
5V
INPUT
0.1µF
Figure 6. Typical Isolated Data-Conversion Application
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