HV2621/HV2721/HV2722
300V, Low-Charge Injection, 16-Channel,
High-Voltage Analog Switch
Features
•
•
•
•
•
•
•
•
•
•
•
300V,16-Channel High-Voltage Analog Switch
3.3V or 5.0V CMOS Input Logic Level
33 MHz Data Shift Clock Frequency
Very Low Quiescent Current (10 µA)
Low Parasitic Capacitance
DC to 50 MHz Analog Small-Signal Frequency
-60 dB Typical Off Isolation at 5.0 MHz
Excellent Noise Immunity
Cascadable Serial Data Register with Latches
Flexible Operating Supply Voltage
Integrated Bleed Resistors on the Outputs (both
sides for HV2721, one side only for HV2722)
General Description
The HV2621/HV2721/HV2722 devices are 300V,
low-charge injection, 16-channel, high-voltage analog
switches. These devices are designed for use in
applications
requiring
high-voltage
switching
controlled by low-voltage control signals, such as
medical ultrasound imaging, piezoelectric transducer
drivers. HV2621/HV2721 are almost identical to
HV2601/2701 but have larger signal range. If the
V
PP
/V
NN
= ±150V, HV2621/HV2721/HV2722 can pass
the analog signal up to ±135V.
The HV2721 has integrated bleed resistors on both
sides of the switches. HV2722 has integrated bleed
resistors on one side, SWxA only. HV2621 has no
bleed resistors. The bleed resistor eliminates voltage
build-up on capacitive loads such as piezoelectric
transducers.
Input data are shifted into a 16-bit shift register that
can then be retained in a 16-bit latch. To change all the
switch state at the same time, the latch enable bar
should be left high until all bits are clocked in. The
input data are clocked in at the rising edge of the
clock. After all bits are clocked in to the shift register, a
negative pulse of the latch enable bar changes all the
switch ON/OFF states defined by input data at the
same time. Using the HVCMOS technology, these
devices combine 300V high-voltage bilateral DMOS
switches and low-power CMOS logic to provide
efficient control of high-voltage analog signals.
These devices are suitable for various combinations of
high-voltage supplies, e.g., V
PP
/V
NN
: +60V/-240V,
+150V/-150V, and +260V/-40V.
Applications
• Medical Ultrasound Imaging
• Nondestructive Testing (NDT) Metal Flaw
Detection
• Multi-Layer Printed Circuit Board (PCB) Tester
• Piezoelectric Transducer Drivers
• Inkjet Printer Head
• Optical MEMS Module
Package Types
HV2621/HV2721/HV2722
9x9x1.0mm QFN
(TOP VIEW)
64
1
2019 Microchip Technology Inc.
DS20006082A-page 1
HV2621/HV2721/HV2722
Block Diagram
Latches
D
LE
CLR
Level
Shifter
Output
Switches
Bleed
Resistors
SW0A
SW0B
D
LE
CLR
SW1A
SW1B
CLK
D
LE
CLR
16-Bit
Shift
Register
SW2A
SW2B
D
IN
D
OUT
D
LE
CLR
SW14A
SW14B
D
LE
CLR
SW15A
SW15B
V
DD
GND
LE CLR
V
NN
V
PP
R
GND
HV2721 has bleed resistors at SWxA and SWxB
HV2722 has bleed resistors at SWxA only
DS20006082A-page 2
2019 Microchip Technology Inc.
HV2621/HV2721/HV2722
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Logic Supply Voltage (V
DD
).......................................................................................................................... -0.5V to 6.5V
Differential Supply Voltage (V
PP
-V
NN
).......................................................................................................................330V
Positive Supply Voltage (V
PP
) .............................................................................................................-0.5V to V
NN
+300V
Negative Supply Voltage (V
NN
) ................................................................................................................. -300V to +0.5V
Logic Input Voltage (V
IN
).....................................................................................................................-0.5V to V
DD
+0.3V
Analog Signal Range (V
SIG
)............................................................................................................................ V
NN
to V
PP
Peak Analog Signal Current/Channel (I
PK
) ...................................................................................................................3A
† Notice:
Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at those or any other conditions above those indicated in the
operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods
may affect device reliability.
RECOMMENDED OPERATING CONDITIONS (NOTES
1, 2, 3)
Parameter
Logic Supply Voltage
Differential Supply Voltage
Positive Supply Voltage
Negative Supply Voltage
High-Level Input Voltage
Low-Level Input Voltage
Analog Signal Voltage Peak-to-Peak
Note 1:
2:
3:
Sym.
V
DD
V
PP
-V
NN
V
PP
V
NN
V
IH
V
IL
V
SIG
Min.
3
60
60
-240
0.9V
DD
0
V
NN
+15
Typ.
—
—
—
—
—
—
—
Max.
5.5
300
260
0
V
DD
0.1V
DD
V
PP
-15
Units
V
V
V
V
V
V
V
Conditions
Recommended power up sequence is V
DD
, V
PP
and V
NN
. Power down is in reverse order.
V
SIG
must be V
NN
≤
V
SIG
≤
V
PP
or floating during power up/down transition.
Rise and fall times of power supplies, V
DD
, V
PP
and V
NN
should be greater than 1.0 ms.
DC ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
PP
= +150V, V
NN
= -150V, V
DD
= 5.0V, T
A
= 25
°C
.
Boldface
specifications apply over
the full operating temperature range.
Parameter
Sym.
Min.
—
—
Small Signal Switch On-Resistance
R
ONS
—
—
—
—
Small Signal Switch On-Resistance
Matching
Large Signal Switch On-Resistance
Value of Output Bleed Resistor
(HV2721/HV2722 Only)
Switch Off Leakage per Switch
DC Offset Switch Off
DC Offset Switch On
V
OS
∆R
ONS
R
ONL
R
INT
I
SOL
—
—
30
—
—
—
Typ.
26
22
22
18
20
16
5
17
50
1
1
1
Max.
48
32
30
27
30
27
20
—
70
15
10
10
mV
Units
Ω
Ω
Ω
Ω
Ω
Ω
%
Ω
kΩ
μA
Conditions/Comments
I
SIG
= 5 mA
I
SIG
= 150 mA
I
SIG
= 5 mA
I
SIG
= 150 mA
I
SIG
= 5 mA
I
SIG
= 150 mA
V
PP
= +60V,
V
NN
= -240V
V
PP
= +150V,
V
NN
= -150V
V
PP
= +260V,
V
NN
= -40V
I
SIG
= 5 mA, V
PP
= +150V,
V
NN
= -150V
V
SIG
= V
PP
-15V, I
SIG
=1A
Output switch to RGND,
I
RINT
= 0.5 mA
V
SIG
= V
PP
-15V, V
NN
+15V.
See
Figure 3-1
R
LOAD
= 35 kΩ (HV2621), 70 kΩ
(HV2722), No load (HV2721), see
Figure 3-2
2019 Microchip Technology Inc.
DS20006082A-page 3
HV2621/HV2721/HV2722
DC ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, V
PP
= +150V, V
NN
= -150V, V
DD
= 5.0V, T
A
= 25
°C
.
Boldface
specifications apply over
the full operating temperature range.
Parameter
Quiescent V
PP
Supply Current
Quiescent V
NN
Supply Current
Quiescent V
PP
Supply Current
Quiescent V
NN
Supply Current
Switch Output Peak Current
Output Switching Frequency
Sym.
I
PPQ
I
NNQ
I
PPQ
I
NNQ
I
SW
f
SW
Min.
—
—
—
—
2.0
—
—
Average V
PP
Supply Current
I
PP
—
—
—
—
Average V
NN
Supply Current
I
NN
—
—
—
Average V
DD
Supply Current
Quiescent V
DD
Supply Current
Data Out Source Current
Data Out Sink Current
Logic Input Capacitance
I
DD
I
DDQ
I
SOR
I
SINK
C
IN
—
—
8
12
—
Typ.
10
10
10
10
3.0
—
—
—
—
—
—
—
—
—
—
—
—
Max.
50
50
50
50
—
50
3
4
6
3
4
6
4
10
—
—
10
Units
μA
μA
μA
μA
A
kHz
mA
mA
mA
mA
mA
mA
mA
μA
mA
mA
pF
Conditions/Comments
All switches off
All switches on, I
SW
= 5.0 mA
V
SIG
duty cycle <0.1% (Note
1)
Duty cycle = 50% (Note
1)
V
PP
= +60V,
V
NN
= -240V
V
PP
= +150V,
V
NN
= -150V
V
PP
= +260V,
V
NN
= -40V
V
PP
= +60V,
V
NN
= -240V
V
PP
= +150V,
V
NN
= -150V
V
PP
= +260V,
V
NN
= -40V
All output
switches are
turning on and off
at 10 kHz with no
load
All output
switches are
turning on and off
at 10 kHz with no
load
f
CLK
= 5 MHz, f
DIN
= 2.5 MHz
All logic inputs are static
V
OUT
= V
DD
-0.7V
V
OUT
= 0.7V
Note 2
Note 1:
Specification is obtained by characterization and is not 100% tested.
2:
Design guidance only.
AC ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
PP
= +150V, V
NN
= -150V, V
DD
= 5.0V, t
R
= t
F
≤
5.0 ns, 50% duty cycle, C
LOAD
= 20 pF,
T
A
= 25
°C
,
Boldface
specifications apply over the full operating temperature range.
Sym.
Setup Time before LE rises
Time Width of LE
Sym.
t
SD
t
WLE
Min.
25
56
12
-
-
55
7
7
4
3.5
Typ.
—
—
—
—
—
—
—
—
—
Max.
—
—
—
45
25
—
—
—
—
Units
ns
ns
ns
Note 1
V
DD
= 3.3V (Note
1)
V
DD
= 5.0V (Note
1)
V
DD
= 3.3V
V
DD
= 5.0V
Note 1
V
DD
= 3.3V (Note
1)
V
DD
= 5.0V (Note
1)
V
DD
= 3.3V (Note
1)
V
DD
= 5.0V (Note
1)
Conditions/Comments
Clock Delay Time to Data Out
Time Width of CLR
Setup Time Data to Clock
t
DO
t
WCLR
t
SU
ns
ns
ns
ns
ns
ns
ns
Hold Time Data from Clock
t
H
DS20006082A-page 4
2019 Microchip Technology Inc.
HV2621/HV2721/HV2722
AC ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, V
PP
= +150V, V
NN
= -150V, V
DD
= 5.0V, t
R
= t
F
≤
5.0 ns, 50% duty cycle, C
LOAD
= 20 pF,
T
A
= 25
°C
,
Boldface
specifications apply over the full operating temperature range.
Sym.
Clock Frequency
Clock Rise and Fall Time
Turn-On Time
Turn-Off Time
Maximum V
SIG
Slew Rate
Sym.
f
CLK
t
R
, t
F
t
ON
t
OFF
dV/dt
Min.
—
—
—
—
—
—
—
—
—
Off Isolation
K
O
—
Switch Crosstalk
Output Switch Isolation Diode
Current
Off Capacitance SW to GND
On Capacitance SW to GND
K
CR
I
ID
C
SG(OFF)
C
SG(ON)
+V
SPK
-V
SPK
Output Voltage Spike at SWA,
SWB
+V
SPK
-V
SPK
+V
SPK
-V
SPK
—
—
—
—
—
-250
—
-250
—
-250
—
Charge Injection
QC
—
—
Note 1:
Typ.
—
—
—
—
—
—
—
—
-55
-60
-70
—
10
18
—
—
—
—
—
—
1000
770
360
Max.
16
33
50
6
6
20
20
20
-50
Units
MHz
MHz
Conditions/Comments
V
DD
= 3.3V (Note
1)
V
DD
= 5.0V (Note
1)
Note 1
V
SIG
= V
PP
-15V, R
LOAD
= 20 kΩ
See
Figure 3-3
V
PP
= +60V, V
NN
= -240V (Note
1)
ns
μs
V/ns
V
PP
= +150V, V
NN
= -150V (Note
1)
V
PP
= +260V, V
NN
= -40V (Note
1)
f = 5.0 MHz,1.0 kΩ//15 pF load
See
Figure 3-4
(Note
1)
f = 5.0 MHz, 50Ω load
See
Figure 3-4
(Note
1)
f = 5.0 MHz, 50Ω load
See
Figure 3-5
(Note
1)
300 ns pulse width, 2.0% duty cycle,
See
Figure 3-6
(Note
1)
V
SIG
= 50 mV@1MHz, no load
(Note
1)
V
PP
= +60V, V
NN
= -240V,
R
LOAD
= 50Ω, see
Figure 3-7
(Note
1)
dB
-58
-60
200
—
—
250
—
250
—
250
—
—
—
—
pC
mV
dB
mA
pF
V
PP
= +150V, V
NN
= -150V,
R
LOAD
= 50Ω, see
Figure 3-7
(Note
1)
V
PP
= +260V, V
NN
= -40V,
R
LOAD
= 50Ω, see
Figure 3-7
(Note
1)
V
PP
= +60V, V
NN
= -240V,
V
SIG
= 0V, see
Figure 3-8
(Note
1)
V
PP
= +150V, V
NN
= -150V,
V
SIG
= 0V, see
Figure 3-8
(Note
1)
V
PP
= +260V, V
NN
= -40V,
V
SIG
=0V, see
Figure 3-8
(Note
1)
Specification is obtained by characterization and is not 100% tested.
TEMPERATURE SPECIFICATION
Parameters
Temperature Range
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Package Thermal Resistance
Thermal Resistance, 64L QFN
Θ
JA
—
21
—
°C/W
Sym
T
A
T
S
T
J
Min
0
-65
—
Typ
—
—
—
Max
+70
+150
+125
Units
°C
°C
°C
Conditions
2019 Microchip Technology Inc.
DS20006082A-page 5
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