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PDF HV219 Data sheet ( Hoja de datos )
| Número de pieza | HV219 | |
| Descripción | 8-Channel High Voltage Analog Switch | |
| Fabricantes | Supertex | |
| Logotipo |  |
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Supertex inc.
HV219
200V Low Charge Injection
8-Channel High Voltage Analog Switch
Features
►►HVCMOS® technology for high performance
►►Very low quiescent power dissipation (-10µA)
►►Output on-resistance typically 11Ω
►►Low parasitic capacitance
►►DC to 50MHz small signal frequency response
►►-60dB typical off-isolation at 5.0MHz
►►CMOS logic circuitry for low power
►►Excellent noise immunity
►►Serial shift register logic control with latches
►►Flexible operating supply voltages
►►Surface mount packages
Applications
►►Medical ultrasound imaging
►►Non-destructive evaluation
General Description
The Supertex HV219 is a low switch resistance, low charge
injection, 8-channel, 200V, analog switch integrated circuit (IC)
intended primarily for medical ultrasound imaging. The device can
also be used for NDE (non-destructive evaluation) applications. The
HV219 is a lower switch resistance, 11Ω versus 22Ω, version of the
Supertex HV20220 device. The lower switch resistance will help
reduce insertion loss. It has the same pin configuration as that of the
Supertex HV20220PJ and the HV20220FG.
The device is manufactured using Supertex’s HVCMOS® (high
voltage CMOS) technology with high voltage bilateral DMOS
structures for the outputs and low voltage CMOS logic for the input
control. The outputs are configured as eight independent single
pole single throw 11Ω analog switches. The input logic is an 8-bit
serial to parallel shift register followed by an 8-bit parallel latch. The
switch states are determined by the data in the latch. Logic high will
correspond to a closed switch and logic low as an opened switch.
Block Diagram
The HV219 is designed to operate on various combinations of high
voltage supplies. For example the VPP and VNN supplies can be:
+40V/-160V, +100V/-100V, or +160V/-40V. This allows the user to
maximize the signal voltage for uni-polar negative, bi-polar, or uni-
polar positive.
DIN
CLK
DOUT
8-Bit
Shift
Register
Level Output
Latches Shifters Switches
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
D
LE
CL
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Doc.# DSFP-HV219
C070713
VDD GND LE CL
VNN VPP
Supertex inc.
www.supertex.com
1 page  
HV219
Truth Table
D0
Data in 8-Bit Shift Register
D1 D2 D3 D4 D5 D6
D7
LE
CL
SW0 SW1
Output Switch State
SW2 SW3 SW4 SW5
L L L OFF
H L L ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L LL
OFF
H LL
ON
L LL
OFF
H LL
ON
L LL
H LL
LL L
HL L
XXXXXXXX H L
Hold Previous State
X X X X X X X X X H OFF OFF OFF
Notes:
1. The eight switches operate independently.
2. Serial data is clocked in on the L to H transition clock.
3. The switches go to a state retaining their present condition at the rising edge of the LE.
4. When LE is low, the shift register data flows through the latch.
5. Shift register clocking has no effect on the switch states if LE is high.
6. The clear input overrides all other inputs.
OFF
OFF
OFF
SW6
OFF
ON
OFF
SW7
OFF
ON
OFF
Logic Timing Waveforms
DN+1
DN
DATA
IN
50%
50%
DN-1
Doc.# DSFP-HV219
C070713
LE
CLOCK
DATA
OUT
VOUT
(typ)
OFF
ON
CLR
50%
50%
tSU
50%
tWLE
tSD
50%
th
tDO
50%
tOFF
90%
50%
tWCL
5
50%
tON
10%
Supertex inc.
www.supertex.com
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HV219.PDF ] | |
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