hv256 Supertex, Inc., hv256 Datasheet - Page 3

• Manufacturer Part Number: hv256
• Description: 32-channel High Voltage Amplifier Array
• Manufacturer: Supertex, Inc.

Diode
Power Up/Down Sequence
The device can be damaged due to improper power up / down
sequence. To prevent damage, please follow the acceptable
power up /down sequences and add two external diodes as shown
in the diagram below. The first diode is a high voltage diode
across V
to V
current high voltage diode such as a 1N4004 will be adequate.
The second diode is a schottky diode across V
the anode of the schottky diode is connected to V
cathode is connected to DGnd. Any low current schottky diode
such as a 1N5817 will be adequate.
Pin Description
B
B
B
GN
R
R
C
H
V
V
V
A
V
P
I
V
T
Symbol
F
V
V
Y
Y
Y
P
D
N
S
S
n
N I
V
a
V I
C
F
P
P
P
O
N I
P
D
N
o
h t
DD
DD
NN
O
0
D
V -
V -
V -
U
d
K
U
o
R
o t
e
T
and the cathode of the diode is connected to Vpp. Any low
P
D
N
d
C
0
P
D
N
e
E
V
PP
o t
N I
and V
3
H
P
F
F
V
1
or similar
or similar
V
r o
e
r o
F
1N4004
1N5817
O
a
e t
w
w
k
U
a
m
DD
a
T
n i
3
d r
d r
p
1
v
e
where the anode of the diode is connected
e
d
d
a r
s r
o i
o i
u t
e
d
d
e
e r
v
e
l o
c
H
D
E
E
A
e r
A
A
e r
A
A
e r
C
i l
A
e t
C
e t
A
A
Parameter
d
c
r u
m
a t
x
x
g i
n
n
e
r u
n
a
m
m
o r
o
q
q
q
m
m
o l
o l
o l
e t
e t
a
a
v
t i
o
h t
e r
f e
ge
h
i u
i u
i u
p
p
V
PGND
e r
p
p
p
c i
w
o l
w
o l
w
d
n r
n r
s i
i f i l
i f i l
o
t n
c i f
e r
e r
e r
r e
r e
v
e
PP
e
n
g
g
d
l o
v
v
v
l a
l a
i l t
r e
r e
. d
. d
. d
a
e i
t a
t a
s
e
l o
l o
l o
g
o l
o l
.
a t
p
d i
o r
e r
e r
t n
r u
r u
a t
a t
a t
m
s
w
w
p
n i
o
g
e
d i
u
o r
u
s
s
g
g
g
t i
. e
. e
e
p
v
v
n
s i
s i
p t
f o
e
e
e
e
u
i x
l o
l o
s i
p
. d
o t
o t
s t
f o
u
1
1
1
m
o
a
a t
a t
. s t
a
0 .
0 .
0 .
f r
f r
i s
T
NN
a
p
g
g
o l
a
Acceptable Power Up Sequences
1) V
or
1) V
Acceptable Power Down Sequences
1) Inputs & Anode
or
1) Inputs & Anode
v i t
h
o r
o r
e t
p
e
e
o t
o t
o t
w
e
o l
and DGnd where
o r
y l
e
m
m
p
n
e r
w
1
1
1
v
PP
NN
o
e
i x
s
1
l o
0
0
0
R
R
i s
g
a
v
u
m
2
n
n
n
a t
a
e r
S
S
l o
p
v i t
NN
5 .
F
F
F
a
v i t
O
N I
p
g
a t
e t
V
e
U
. y l
d
d
d
o f
K
e
e
g
R
and the
y l
e
e
e
s
r u
d
o t
i s
e
C
c
c
s
c
u
T
v i
E
1
o
o
u
o
c i l
p
i s
h
p
V
2
d i
u
u
p
u
o t
p
e
a
c i l
o
5 .
N
p
p
. y l
p
e
. y l
e r
d
Min
N
n
n i l
n i l
n i l
d
V
V
o
s.
2) V
2) V
T
s
d
n
N
a
T
b
g
g
g
d
e
o i
h
N
e r
h
y
d
v i
c
c
c
s t
e
d
e
s
o i
NN
DD
a
a
a
R
3
e r
d i
e
w t
e r
e
o
p
p
p
d
S
e
s t
u
a
a
a
h t
e
N I
0.60
o
a
-2.20
d
Typ
a
p t
t i c
t i c
t i c
e r
o
K
t a
h t
e r
p
2) V
2) V
b
u
t u
r o
r o
r o
a
e r
y
t a
o f
p t
c
o f
d
R
c
s
a
. s
a
a
r u
a
DD
PP
t u
c
r u
r u
t s i
n
s
c
c
c
a
o
o r
o r
o r
e r
b
n
p
c
r o
p
u
Max
r u
e
1
a
5
s s
a
s s
s s
t n
b
c r
00
.0
3) V
3) V
d
d
v
e r
u
e
. s
e
a
. s
s
s
V
V
V
u
t n
u l
e
n i
e r
P
D
N
s
PP
DD
d
. e
P
D
N
k
e
s
s
n i
o t
d
m
o
a
t s i
Units
a
a
u
n
g
V
µA
n
n
o t
V
V
m
c r
r o
3) V
3) V
d
/ ˚C
d
d
i l
o
n i
m
m
B
B
B
v
n
Y
g
a
. t i
o
Y
Y
NN
DD
t i
P
P
P
u l
n
r o
i l
I
c
a
a
V -
V -
V -
C
t i
= f
m
. e
a
n
n
r o
r u
d
P
h t
1
o
o
D
N
. t i
4) Inputs & Anode
4) Inputs & Anode
P
e i
0
d
d
D
N
e r
d
o
0
e
e
s i
e i
d
s i
s i
t n
µ
e
o t
o t
, A
o t
c
c
a
a
a
a
n
h t
h t
n
4) V
4) V
o
o
o
o
d
Condition
d
d
d
e
e
e
e
NN
PP
o t
c
a
h t
o
d
e
HV256
A112304