參數(shù)資料
型號(hào): HV257X
廠商: SUPERTEX INC
元件分類: 運(yùn)動(dòng)控制電子
英文描述: 32 CHANNEL HIGH VOLTAGE SAMPLE AND HOLD AMPLIFIER ARRAY
中文描述: SAMPLE AND HOLD AMPLIFIER, UUC96
封裝: DIE-96
文件頁(yè)數(shù): 1/9頁(yè)
文件大?。?/td> 618K
代理商: HV257X
1
HV257
HV257
A122104
32-Channel High Voltage
Sample and Hold Amplifier Array
Features
32 independent high voltage amplifiers
300V operating voltage
295V output voltage
2.2V/μs typical output slew rate
Adjustable output current source limit
Adjustable output current sink limit
Internal closed loop gain of 72V/V
12M
feedback impedance
Layout ideal for die applications
Application
MEMS (microelectromechanical systems) driver
Piezoelectric transducer driver
Optical crosspoint switches (using MEMS technology)
General Description
The Supertex HV257 is a 32-channel high voltage sample and
hold amplifier array integrated circuit. It operates on a single high
voltage supply, up to 300V, and two low voltage supplies, V
DD
and V
NN
.
All 32 sample and hold circuits share a common analog input,
Vsig. The individual sample and hold circuits are selected by a
5 to 32 logic decoder. The sampled voltage on the holding
capacitor is buffered by a low voltage amplifier and amplified by
a high voltage amplifier with a closed loop gain of 72V/V. The
internal closed loop gain is set for an input voltage range of 0V
to 4.096V. The input voltage can be up to 5.0V, but the output will
saturate. The maximum output voltage swing is 5V below the V
PP
high voltage supply. The outputs can drive capacitive loads of up
to 3000pF.
The maximum output source and sink current can be adjusted by
using two external resistors. An external R
SOURCE
resistor
controls the maximum sourcing current and an external R
SINK
resistor controls the maximum sinking current. The current limit
is approximately 12.5V divided by the external resistor value.
The setting is common for all 32 outputs. A low voltage silicon
junction diode is made available to help monitor the die
temperature.
Demo Kit
Available
V
SIG
A
0
A
1
EN
A
3
A
4
A
2
HV
OUT
0
HV
OUT
1
Supertex HV257
High Voltage
Power Supply
Low Voltage
Power Supply
32
DGND
AGND
MEMS
Array
y
y
x
x
HV
OUT
2
HV
OUT
3
HV
OUT
30
HV
OUT
31
V
NN
Low Voltage
Channel
Select
Sample
and Hold
High Voltage
OpAmp Array
R
S
R
S
Micro
Processor
DAC
A122104
Typical Application
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