cpc7220 Clare, Inc., cpc7220 Datasheet

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cpc7220

Manufacturer Part Number
cpc7220
Description
High Voltage Drivers And Analog Switches
Manufacturer
Clare, Inc.
Datasheet

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Features
Applications
Block Diagram
D
DS-CPC7220-R00B
D
CLK
OUT
IN
Processed with BCDMOS on SOI (Silicon On
Insulator)
DC to 10MHz analog signal frequency
Surface mount package available
Low quiescent power dissipation (< 1µA typical)
Output on-resistance typically 20Ω
TTL I/O's for 3.3V interface
Adjustable high voltage supplies
Ultrasound imaging
Printers
Industrial controls and measurement
REGISTER
SHIFT
8 BIT
LE
CL
LATCHES
D
LE
CL
D
LE
CL
SHIFTERS
LEVEL
V
V
NN
PP
SWITCHES
OUTPUT
Switches 1
not shown.
through 6
www.clare.com
SW0
SW7
Ordering Information
Description
The CPC7220 and CPC7221, with alternate pinout,
are low charge injection 8-channel high-voltage
analog switch integrated circuits (IC) for use in
applications requiring high voltage switching. Control
of the high voltage switching is via low voltage TTL
of the high voltage switching is via low voltage TTL
logic level compatible inputs for direct connectivity to
logic level compatible inputs for direct connectivity to
the system controller.
Switch manipulation is managed by an 8-bit serial to
Switch manipulation is managed by an 8-bit serial to
parallel shift register whose outputs are buffered and
parallel shift register whose outputs are buffered and
stored by an 8-bit transparent latch. Level shifters
stored by an 8-bit transparent latch. Level shifters
buffer the latch outputs and operate the high voltage
buffer the latch outputs and operate the high voltage
switches.
switches.
Because the CPC7220 and CPC7221 are capable
Because the CPC7220 and CPC7221 are capable
of switching large load voltages and have a flexible
of switching large load voltages and have a flexible
load voltage range, e.g. V
load voltage range, e.g. V
or +100V/-100V, they are well suited for many
or +100V/-100V, they are well suited for many
medical and industrial applications such as
medical and industrial applications such as
medical ultrasound imaging, printers and industrial
medical ultrasound imaging, printers and industrial
measurement equipment.
measurement equipment.
Construction of the high voltage switches using
Clare's reliable BCDMOS process technology on
SOI (Silicon On Insulator) allow the switches to be
organized as solid state switches with direct gate
drive.
Part Number
CPC7220W
CPC7221W
Low Charge Injection 8-Channel
High Voltage Analog Switch
Description
28-Pin PLCC
28-Pin PLCC, Alternate pin out
CPC7220/CPC7221
PP
/V
NN
: +40V/-160V
1

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cpc7220 Summary of contents

Page 1

... Because the CPC7220 and CPC7221 are capable Because the CPC7220 and CPC7221 are capable of switching large load voltages and have a flexible of switching large load voltages and have a flexible load voltage range, e.g. V load voltage range, e ...

Page 2

... CPC7220/CPC7221 Package Pinout CPC7220, 27 CPC7221 top view 28-pin J-Lead Package 2 Pinout CPC7220 CPC7221 Name Description 1 1 SW3 2 2 SW3 3 3 SW2 4 4 SW2 SW1 6 6 SW1 SW0 SW0 ...

Page 3

... 1.2 W -60 to +150 °C Symbol SIG should not be less than 1msec. should not be less than 1msec. www.clare.com CPC7220/CPC7221 Value 4. 40V 200V NN -40V to -160V V + 10V to V -10V NN PP 0ºC to 70ºC 3 ...

Page 4

... CPC7220/CPC7221 Electrical Characteristcs DC Characteristics (over recommended operating conditions unless otherwise noted) Parameter Symbol Test Conditions Small Signal Switch On-resistance R ONS Small Signal Switch ∆R On-resistance Matching Large Signal Switch On-resistance R ONL Switch Off Leakage Per Switch I SOL DC Offset Switch Off - DC Offset Switch On ...

Page 5

... V = 100V -100V -100V 50Ω 160V -40V -40V 50Ω 100V 100V -100V SIG www.clare.com CPC7220/CPC7221 0ºC +25ºC +70ºC max min typ max min max 150 - 150 - - 150 150 - 150 - - 150 - 150 - - 150 - 150 - ...

Page 6

... CPC7220/CPC7221 Test Circuits I SOL V – + GND NN NN Switch OFF Leakage P–P @5MHz V OUT 20Log O OFF Isolation ∆V OUT V OUT 1000pF V SIG 1000pF x ∆V Charge Injection ...

Page 7

... Logic Timing Waveforms D N – 50% IN 50% LE CLK OUT V OFF OUT (TYP) ON 50% 50 WCL R00B 50% 50% t WLE t SD 50 OFF ON 90% 10% www.clare.com CPC7220/CPC7221 7 ...

Page 8

... CPC7220/CPC7221 Truth Table Notes: 1. The eight switches operate independently. 2. Serial data is clocked in on the L→ H transition CLK. H transition CLK. 3. The switches state retaining their present condition at the rising edge of LE. When LE is low the shift The switches state retaining their present condition at the rising edge of LE ...

Page 9

... Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Washing Clare does not recommend ultrasonic cleaning or the use of chlorinated solvents. Specification: DS-CPC7220/CPC7221-R00B ©Copyright 2005, Clare, Inc. All rights reserved. Printed in USA. 5/10/05 ...

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