hv256db1 Supertex, Inc., hv256db1 Datasheet
hv256db1
Manufacturer Part Number
hv256db1
Description
High Voltage Amplifier Array
Manufacturer
Supertex, Inc.
Datasheet
1.HV256DB1.pdf
(2 pages)
Introduction
The Supertex HV256DB1 is a 32-Channel 295V
amplifier array with a nominal gain of 72V/V. The
purpose of the HV256DB1 is to provide a means to
easily evaluate the Supertex HV256FG device. A high
voltage supply, V
and V
via the J1 header provided on the board. There are 32
pads on the left side of the board for the input signals
and 32 pads on the right for the outputs. Be sure to
follow the power up/down sequence to avoid damaging
the device.
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. Two external
diodes, D1 and D2, are added in the demo board to
prevent damage during power Up/Down. The first diode
is a high voltage diode across V
current high voltage diode can be used. The second
diode can be any low voltage schottky diode across V
and Gnd.
Acceptable Power Up Sequences
1) V
1) V
Acceptable Power Down Sequences
1) Inputs & Anode
1) Inputs & Anode
or
or
PP
NN
Demo Board Layout
NN
Supertex, Inc.
, are required. These connections can be made
2) V
2) V
NN
DD
PP
, and two low voltage supplies, V
3) V
3) V
2) V
2) V
DD
PP
DD
PP
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: (408) 222-8888 FAX: (408) 222-4895 www.supertex.com
32 Inputs
4) Inputs & Anode
4) Inputs & Anode
3) V
3) V
PP
NN
DD
and V
4) V
4) V
DD
PP
NN
. Any low
Power Supply Inputs
DD
NN
D2
C1
C2
C4 C5
U1
Specifications
V
V
V
V
HV
Av, Closed loop gain
SR, Output slew rate into 100pF load
Inputs and Outputs
The output of the HV256FG will swing from 0V to 295V.
The internal closed loop gain is set at 72V/V. An input
voltage of 4.096V will give an output of 295V. Input
voltages of up to 5V can be applied but will cause the
amplifier to saturate.
The output current source and sink for all 32 channels
can be adjusted using R1 and R2. The limit is
approximately 12.5V divided by the resistor value. The
demo board uses 24.9Kohm for ±500uA limiting.
Temperature Diode
The HV256FG has an integrated silicon diode to help
monitor the die temperature if desired. Pin 37 is the
anode and pin 36 is the cathode. Pads are available on
the board for these connections.
PP
DD
NN
IN
R1
, Input signal range
OUT
C3
, High voltage supply
R2 C6
, Low voltage positive supply
, Low voltage negative supply
J1
, Output voltage swing
D1
High Voltage Amplifier Array
32 Outputs
HV256DB1
-4.5V to -6.5V
6.0V to 7.5V
72V/V ±5%
0V to 295V
0V to 5.0V
2.0V/µs
A071404
300V
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hv256db1 Summary of contents
Page 1
... Introduction The Supertex HV256DB1 is a 32-Channel 295V amplifier array with a nominal gain of 72V/V. The purpose of the HV256DB1 is to provide a means to easily evaluate the Supertex HV256FG device. A high voltage supply and two low voltage supplies and V , are required. These connections can be made NN via the J1 header provided on the board ...
Page 2
... HV256DB1 Circuit Diagram V Supply PP C3 10nF V Supply DD C1 0.1µF V Supply NN C2 0.1µF Bill of Material Description C1 X7R chip capacitor C2 X7R chip capacitor C3 X7R chip capacitor C4 X7R chip capacitor C5 X7R chip capacitor C6 X7R chip capacitor R1 Chip resistor R2 Chip resistor D1 Rectifier diode D2 Schottky diode ...