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PDF HV238 Data sheet ( Hoja de datos )
| Número de pieza | HV238 | |
| Descripción | 16 Channel High Voltage Analog Switch | |
| Fabricantes | Supertex | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HV238 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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Supertex inc.
HV238
16-Channel High Voltage Analog Switch
With Bleed Resistors
Features
►► HVCMOS® technology for high performance
►► 220V operating conditions
►► Output on-resistance typically 22Ω
►► Integrated bleed resistors on the outputs
►► 5.0 and 12.0V CMOS logic compatibility
►► Very low quiescent power dissipation (-10µA)
►► -45dB min off isolation at 7.5MHz
►► Low parasitic capacitance
►► Excellent noise immunity
►► Flexible operating supply voltages
Applications
►► Medical ultrasound imaging
►► Non-destructive evaluation
General Description
The Supertex HV238 is a 220V, 16-channel, high voltage
analog switch integrated circuit (IC) with output bleed resistors
(RINT). The output switches are configured as 2 sets of 8 single
pole single throw analog switches. It is intended to be used in
applications requiring high voltage switching controlled by low
voltage control signals such as ultrasound imaging.
The 2 sets of 8 analog switches are controlled by 2 input logic
controls, DIN1 and DIN2. A logic high on DIN1 will turn on switches
0 to 7 and a logic high on DIN2 will turn on switches 8 to 15. The
bleed resistors help to significantly reduce voltage built up on
capacitive loads such as piezoelectric transducers connected
to the outputs.
Block Diagram
VDD
DIN1
Latch 1
Level
Translator 1
SW0
SW0
SW7
DIN2
LE
GND
VPP
VNN
Doc.# DSFP-HV238
B070813
VDD
Latch 2
Level
Translator 2
SW7
SW8
SW8
SW15
SW15
RGND
Supertex inc.
www.supertex.com
1 page  
Test Circuits
VPP -10V and
VNN +10V
VPP
VNN
RINT RINT
RGND
VPP
VNN
VDD
GND
VOUT
VOUT
5.0V
VPP
VNN
RINT RINT
RGND
VPP
VNN
VDD
GND
HV238
VPP -10V
RL
10kΩ
VOUT
RINT
RGND
RINT
5.0V
VPP
VNN
VPP
VNN
VDD
GND
5.0V
ISOL =
VOUT
RINT
Switch OFF Leakage
DC Offset ON/OFF
TON/TOFF Test Circuit
VIN = 10VP-P
@5.0MHz
RINT RINT
RGND
VOUT
RLOAD
VPP VPP
VNN VNN
VDD
GND
5.0V
KO
=
20Log
VOUT
VIN
OFF Isolation
VIN = 10VP-P
@5.0MHz
50Ω
RINT
RINT
VOUT
NC 50Ω
VPP VPP
VNN VNN
VDD
GND
5.0V
KCR
=
20Log
VOUT
VIN
Crosstalk
VSIG
IID VNN
RGND
RINT RINT
1.0kΩ
RINT RINT
RGND
VOUT +VSPK
50Ω -VSPK
VSIG
RINT RINT
RGND
∆VOUT
VOUT
1000pF
VPP VPP
VNN VNN
VDD
GND
5.0V
VPP
VNN
VPP
VNN
VDD
GND
5.0V
Isolation Diode Current
Output Voltage Spike
VPP VPP
VNN VNN
VDD
GND
5.0V
Q = 1000pF • ∆VOUT
Charge Injection
Doc.# DSFP-HV238
B070813
Supertex inc.
5 www.supertex.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HV238.PDF ] | |
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