Microchip HV254 Bedienungsanleitung
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Supertex inc.
Supertex inc.
www.supertex.com
HV254
Doc.# DSFP-HV254
C070813
Features
►32 independent high voltage ampliers
►Up to 250V output voltage
►3.0V/µs typical output slew rate
►Very low operating current (typically 45µA per
channel)
►High value internal feedback resistors
►Fixed gain of 50V/V
►Integrated silicon diode for temperature sensing
Applications
►MEMS (microelectromechanical systems) driver
►Piezoelectric transducer driver
►Optical crosspoint switches (using MEMS
technology)
General Description
The Supertex HV254 is a 32-channel, high voltage, amplier
array integrated circuit. It operates on a 275V high voltage
supply and two low voltage supplies: +5.0V and -5.0V. Each
channel has its own input and output. An integrated diode is
included to help monitor die temperature.
The input voltage can be from a DAC (Digital to Analog
Converter) with a voltage range of 0V to the low voltage supply,
V+. The output of the HV254 will swing from 7.0 to 250V. It
cannot swing to ground. With the internal gain set at 50V/V, a
minimum input signal of 140mV will still maintain linearity. Input
voltages below 140mV can be applied without damage to the
device. However, the amplier will be saturated. Typical output
load is equivalent to a 125MΩ resistor in parallel with a 100pF
capacitor. The outputs have a guaranteed slew rate of at least
3.0V/µs. The internal closed loop gain is set at a nominal value
of 34.0dB (50V/V).
The HV254 is designed to operate with minimal power
consumption while maintaining a guaranteed slew rate of
3.0V/µs. High value resistors are used for the gain setting to
minimize current on the feedback path.
Typical Application Circuit
32-Channel High Voltage
Amplier Array
VIN0HVOUT0
HV254
PGND
HVOUT1
MEMS
Array
y
y
x
x
HVOUT2
HVOUT3
HVOUT30
HVOUT31
V-
V+ VPP
VIN1
VIN2
VIN3
VIN31
VIN30
Micro
Processor
DAC
DAC
DAC
DAC
DAC
DAC
High Voltage
Op-Amp
Array
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | HV254 |
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