HV2705 Datasheet, PDF (1/8 Pages) Supertex, Inc – Low Harmonic Distortion, 16-Channel, High Voltage, Analog Switches with Bleed Resistors

Supertex inc.
HV2705
HV2706
Low Harmonic Distortion, 16-Channel,
High Voltage, Analog Switches
with Bleed Resistors
Features
►► HVCMOS technology for high performance
►► Integrated bleed resistors on the outputs
►► 16-channel high voltage analog switch
►► 3.3V input logic level compatible
►► 20MHz data shift clock frequency
►► Very low quiescent power dissipation (-10µA)
►► Low parasitic capacitance
►► DC to 50MHz small signal frequency
response
►► -60dB typical off-isolation at 5.0MHz
►► CMOS logic circuitry for low power
►► Low harmonic distortion
►► Cascadable serial data register with latches
►► Flexible operating supply voltages
Applications
►► Medical ultrasound imaging
►► NDT metal flaw detection
►► Piezoelectric transducer drivers
►► Optical MEMS modules
General Description
The Supertex HV2705 and HV2706 are low charge injection,
16-channel, high voltage analog switch integrated circuits (ICs) with
bleed resistors. The devices can be used in applications requiring
high voltage switching controlled by low voltage control signals, such
as medical ultrasound imaging and piezoelectric transducer drivers.
The bleed resistors eliminate voltage build-up on capacitive loads
such as piezoelectric transducers. The HV2706 has a different pin
configuration than the HV2705.
Input data are shifted into a 16-bit shift register that can then be
retained in a 16-bit latch. To reduce any possible clock feed-through
noise, the latch enable bar 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.
The device is suitable for various combinations of high voltage
supplies, e.g., V_PP/V_NN: +40V/-160V, +100V/-100V, and +160V/-40V.
Block Diagram
Latches
D
LE
CLR
Level
Output
Shifters Switches
SW0
D
LE
CLR
SW1
DIN
16-Bit
D
LE
SW2
Shift
CLK _Register
CLR
DOUT
D
LE
CLR
D
LE
CLR
SW14
SW15
Doc.# DSFP-HV2705_HV2706
B051512
VDD GND LE CLR
VNN VPP
RGND
Supertex inc.
www.supertex.com