HV57009PG-G Supertex, HV57009PG-G Datasheet - Page 6

• Manufacturer Part Number: HV57009PG-G
• Manufacturer: Supertex

Specifications of HV57009PG-G

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 80
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Typical Current Programing Circuits
Since I
Therefore:
If R
stability as shown.
This control method behaves linearly as long as the opera-
tional amplifier is not saturated. However, it requires a nega-
tive power source and needs to provide a current I
for each HV570 chip being controlled.
If HV
ate as a perfect current source, and the output current will
diminish. This effect depends on the magnitude of the output
current.
EXT
VBP
OUT
>10KΩ, add series network R
OUT
If I
If I
≥ +1.0V, the HV
= I
OUT
OUT
0.1µF
VREF
+IN
HV57009
REF
Figure 1a: Negative Control
= 2.0mA and V
= 1.0mA and R
- +
= │ V
-IN
REXT
IREF
REF
VDD
│ / R
OUT
R
D
C
*10KΩ
D
REF
EXT
cascade may no longer oper-
*390pF
EXT
Logic
4
3
2
1
0
0
*Required if R
= -5.0V → R
= 1.0KΩ → V
●
D
1235 Bordeaux Drive, Sunnyvale, CA 94089
0.1K
VSS
and C
EXT
1
0.2K
D
EXT
> 10KΩ or R
to ground for
REF
To other
outputs
= 2.5KΩ.
= -1.0V.
REF
0.5K
= I
IOUT
2
HVOUT
HV570 I
EXT
OUT
is replaced by a constant current source.
V
REF
OUT
6
(Volts)
vs. V
VBP
Given I
R
The intersection of a set of I
cated in the graph shown below. The value picked for R
must always be in the shaded area for linear operation. This
control method has the advantage that V
draws only leakage current. If R
work R
Note:
EXT
Lower reference current I
∆I
1K
REF
CS
3
= V
VREF
, on the output.
D
OUT
0.1µF
+IN
REF
and C
HV57009
and V
●
- +
/ I
Figure 1b: Positive Control
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2K
REF
-IN
REXT
D
IREF
4
to ground for stability as shown.
REF
= V
3K
, the R
VDD
REF
R
5K
/ I
D
C
*10KΩ
OUT
D
EXT
Logic
* 390pF
REF
5
●
can be calculated by using:
OUT
, results in higher distortion,
www.supertex.com
EXT
and V
VSS
> 10KΩ, add series net-
REF
REF
To other
values can be lo-
outputs
is positive, and
HV57009
IOUT
HVOUT
EXT