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Número de pieza | HV2733 | |
Descripción | High Voltage Analog Switch | |
Fabricantes | Supertex | |
Logotipo | ||
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HV2733
16-Channel, Low Harmonic Distortion,
High Voltage Analog Switch with Bleed Resistors
Features
►► Low harmonic distortion
►► Integrated bleed resistors on the outputs
►► 3.3 or 5.5V CMOS input logic level
►► 20MHz data shift clock frequency
►► HVCMOS technology for high performance
►► Very low quiescent power dissipation (-10µA)
►► Low parasitic capacitance
►► DC to 50MHz small signal frequency
response
►► CMOS logic circuitry for low power
►► Excellent noise immunity
►► Cascadable serial data register with latches
►► Flexible operating supply voltages
General Description
The Supertex HV2733 is a low charge injection, 16-channel, low
harmonic distortion, high voltage analog switch integrated circuit
(IC) intended for use in applications requiring high voltage switching,
controlled by low voltage control signals, such as medical ultrasound
imaging, piezoelectric transducer drivers, and printers. The bleed
resistors eliminate voltage built up on capacitive loads such as
piezoelectric transducers.
The outputs are configured as single-pole double-throw analog switches.
Data are shifted into a 8-bit shift register using an external clock. The LE
latches the shift register data into the individual switch latches. A logic
high connects a switch common YX to SWX. A logic low connects YX
to SWX. A logic high in CLR resets all switches to SWX simultaneously.
Applications
►► Medical ultrasound imaging
►► NDT metal flaw detection
►► Piezoelectric transducer drivers
►► Optical MEMS modules
To reduce any possible clock feed-through noise, the latch enable bar
(LE) should be left high until all bits are clocked in. Data are clocked in
during the rising edge of the clock. Using HVCMOS technology, this
device combines high voltage bilateral DMOS switches and low power
CMOS logic to provide efficient control of high voltage analog signals.
Block Diagram
DIN
8-Bit
CLK Shift
Register
Latches
D
LE
CLR
Level
Shifters
High Voltage
Level Translator
Output
Switches
D
LE
CLR
High Voltage
Level Translator
D
LE
CLR
High Voltage
Level Translator
SW0
Y0
SW0
SW1
Y1
SW1
SW2
Y2
SW2
DOUT
D
LE
CLR
High Voltage
Level Translator
SW6
Y6
SW6
D
LE
CLR
High Voltage
Level Translator
SW7
Y7
SW7
VDD GND LE CLR
VNN VPP
RGND
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
1 page HV2733
HV2733 Test Circuits
ISOL
VPP -10V
RINT
Open VOUT
Open
RGND
VPP VPP
VDD
5.0V
VNN VNN GND
Switch OFF Leakage
VPP
VNN
RGND
RINT
VPP
VNN
VDD
GND
DC Offset ON/OFF
VPP -10V
RL
10kΩ
VOUT
RGND
RINT
5.0V
VPP VPP
VDD
VNN VNN GND
TON / TOFF
5.0V
VIN = 10VP-P
@5.0MHz
RGND
RINT
VPP VPP
VDD
VNN VNN GND
KO
=
20Log
VOUT
VIN
Off Isolation
VOUT
RLOAD
5.0V
VIN = 10VP-P
@5.0MHz
VSIG
IID
VNN
RGND
RINT
VPP VPP
VDD
5.0V
VNN VNN GND
Isolation Diode Current
VPP
VNN
1kΩ
RINT RINT
RINT RINT
RGND
VPP
VDD
5.0V
VNN
GND
VOUT
50Ω
KCR
=
20Log
VOUT
VIN
Crosstalk
VOUT
+VSPK
RGND
RINT
50Ω
-VSPK
VPP VPP
VDD
5.0V
VNN VNN GND
Output Voltage Spike
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
5
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet HV2733.PDF ] |
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