CPC7220
Low Charge Injection, 8-Channel
High Voltage Analog Switch
INTEGRATED
C
IRCUITS
D
IVISION
PRELIMINARY
Features
Description
• Processed with BCDMOS on SOI (Silicon On
The CPC7220 is a low charge injection 8-channel
high-voltage analog switch integrated circuit (IC) for
use in applications requiring high voltage switching.
Control of the high voltage switching is via low voltage
TTL logic level compatible inputs for direct connectivity
to the system controller.
Insulator)
• Flexible High Voltage Supplies up to V -V =200V
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• DC to 10MHz Analog Signal Frequency
• -60dB Minimum Output-Off Isolation at 5MHz
• Low Quiescent Power Dissipation (< 1A typical)
• Output On-Resistance Typically 20
• TTL I/O's for 3.3V Interface
Switch manipulation is managed by an 8-bit serial to
parallel shift register whose outputs are buffered and
stored by an 8-bit transparent latch. Level shifters
buffer the latch outputs and operate the high voltage
switches.
• Adjustable High Voltage Supplies
• Surface Mount Package
Applications
• Ultrasound Imaging
• Printers
• Industrial Controls and Measurement
• Piezoelectric Transducer Drivers
Because the CPC7220 is capable of switching high
load voltages and has a flexible load voltage range,
e.g. V /V : +40V/-160V or +100V/-100V, it is well
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suited for many medical and industrial applications
such as medical ultrasound imaging, printers, and
industrial measurement equipment.
Figure 1. Block Diagram
Construction of the high voltage switches using IXYS
Integrated Circuits Division's reliable BCDMOS
process technology on SOI (Silicon On Insulator)
allow the switches to be organized as solid state
switches with direct gate drive.
SHIFT
REGISTER
LEVEL
SHIFTERS
LATCHES
SWITCHES
SW0
CLK
L0
D
LE
CL
SR0
SR1
SR2
SR3
SR4
SR5
SR6
SR7
D
IN
LS0
LS1
LS2
LS3
LS4
LS5
LS6
LS7
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Ordering Information
L1
D
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Part Number Description
LE
CL
CPC7220W
CPC7220WTR 28-Lead PLCC Tape & Reel (500/Reel)
CPC7220K 48-Lead LQFP in Trays (250/Tray)
CPC7220KTR 48-Lead LQFP Tape & Reel (2000/Reel)
28-Lead PLCC in Tubes (37/Tube)
L2
D
LE
CL
L3
D
LE
CL
L4
D
LE
CL
L5
D
LE
CL
L6
D
LE
CL
L7
D
LE
CL
D
OUT
CL
LE
Pb
e3
DS-CPC7220-R00L
PRELIMINARY
1