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Número de pieza
componentes Descripción
HV623 Ver la hoja de datos (PDF) - Supertex Inc
Número de pieza
componentes Descripción
Fabricante
HV623
32-Channel 128-Level Amplitude Gray-Shade Display Column Driver
Supertex Inc
HV623 Datasheet PDF : 10 Pages
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10
Output Stage Detail
V
CTL
R
CTL
V
R
V
PP
C
H
Internal
Logic
&
Bias
Circuit
Q
1
HV
OUT
Q
2
Test Circuit
High-voltage Analog Output Source Current (I )
AOH
For gray shade #1 (000 0000)
V
R
V
PP
= 80V
HV623
HV623
+–
70V
0V
Logic
LVGND
Output
Stage
HVGND
HV
OUT
+
1K
Ω
V
tst
-
10K
Ω
1. Set HV
OUT
= Low.
2. Apply V
PP
= 80V.
3. Apply a step voltage of 70V at V
R
(slew rate = 4.1V/
µ
s).
4. Measure voltage across the 1K
Ω
resistor.
5.
Output
source
current
can
be
calculated
by
using
V
tst
1K
.
Functional Block Diagram
V
CTL
R
CTL
1
2
Dual
16-bit
Shift Registers
L/E
Data
7
Latches and
7
Latches
Comparators
L/E
Data
7
Latches and
7
Latches
Comparators
See Output Stage Detail
GND
V
R
V
PP
RS
F/F
Output
Stage
HV
OUT
1
RS
F/F
Output
Stage
HV
OUT
2
DIR
I/O
Buffers
31
32
SC
SC
I/O
Buffers
Shift
Clock
Buffer
L/E
Data
Latches
L/E Data
Latches
Data In
Buffers
7
Latches and
7
Comparators
RS
F/F
Output
Stage
HV
OUT
31
7
Latches and
7
Comparators
RS
F/F
Output
Stage
HV
OUT
32
Clear
7
Count
Counter
CC
Load
Reset
Counter
Clear
Pulse
Generator
Load
Count
Buffer
Count
Clock
Buffer
CSI
CSO
SC
D7
D1
LC
CC
SC = Shift Clock
LC = Load Count
CC = Count Clock
CSI = Chip Select Input
CSO = Chip Select Output
*Strobe = twice the SC frequency
12-126
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