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MD0201
General Description
4 X 4 Cross-Point Analog Switch with ±130V T/R Switches
16 cross-point analog echo signal matrix switches
±130V 20ns T/R switch built-in for each channel
50Ω total ON resistance for low insertion loss
0.8nV/rt.Hz low RF input noise at 5MHz
DC to 100MHz small signal bandwidth
-55dB off-Isolation and -65dB crosstalk
Shunt switch for LNA fast recovery
Programmable auto trig levels and time
±5V power supply, 2.5V to 3.3V Logic
5mA low power supply consumptions
20MHz serial interface
-55dB HD2 very low echo signal distortion
Medical imaging ultrasound beamforming receiver
Software programmable echo multiplex switching
High resolution phase array ultrasound NDT
Ultrasonic phase array receiver focusing
Array PZT transducer echo phase processing
High speed T/R switch and wave-front summing
The MD0201 is a low voltage analog 4x4 cross-point
switch with four high voltage T/R switches, voltage limit
diode and output shunt switch circuit. It is designed for
medical ultrasound image system receiver beamforming
applications. It also can be used in NDT and other ultrasound
applications.
The MD0201 circuit consists of a low voltage CMOS analog
switch and digital logic control serial interface circuits.
These analog switches not only have low insertion loss,
low noise, and wide frequency response, they also have
high off isolation and low channel-to-channel crosstalk. The
inputs of the analog switches are connected to the output of
the two terminal type of ultrasound T/R switches, and two
back-to-back diode voltage limiter circuits.
The buffered serial interface data registers have allowed the
IC maximum flexibility to connect large number of channels
to form the echo multiplexing, dynamic-focusing circuit for
ultrasound image receive beamforming.
Applications
Block Diagram
+2.5 to 3.3V
-5V
+5V
XNN
Z2
V1T"UY2
C2
EVTN
Z3
V1T"UY3
C3
EVTN
Z4
V1T"UY4
C4
EVTN
Z5
V1T"UY5
C5
EVTN
TIPF
XFF
S
2
"""///"""S
37
42/Dkv
Ujkhv"Tgikuvgt
XNN
D5
D4
D3
D2
XUU
XFF
E2
F2
E3
F3
E4
F4
E5
F5
ENT
FKP
ENM
FIPF
2"vq"XNN
Nqike"K1Q
FQWV
NG
QC
QD
QE
QF
NPC2
NPC3
NPC4
NPC5
Doc.# DSFP-MD0201
NR011314
Supertex inc.
www.supertex.com
MD0201
Ordering Information
Part Number
MD0201K6-G
MD0201K6-G M933
Package Options
48-Lead (7x7) QFN
48-Lead (7x7) QFN
Packing
260/Tray
2000/Reel
ESD Sensitive Device
-G denotes a lead (Pb)-free / RoHS compliant package
Absolute Maximum Ratings
Parameter
GND reference voltage
X0~X3 input pins to GND voltage
V
DD
positive supply
V
SS
negative supply
V
LL
logic supply
All logic input pins
Maximum junction temperature
Storage temperature range
Value
0V
0 to ±140V
-0.5V to +6.0V
+0.5V to -6.0V
-0.5V to +4.2V
-0.5V to +6.0V
+125°C
-65°C to 150°C
Pin Configuration
48
1
48-Lead QFN
(top view)
Absolute Maximum Ratings are those values beyond which damage to the device
may occur. Functional operation under these conditions is not implied. Continuous
operation of the device at the absolute rating level may affect device reliability. All
voltages are referenced to device ground.
Product Marking
OF2423M8
NNNNNNNNN
[[YY
CCC""EEE
L = Lot Number
YY = Year Sealed
WW = Week Sealed
A = Assembler ID
C = Country of Origin
= “Green” Packaging
Typical Thermal Resistance
Package
48-Lead QFN
θ
ja
18
O
C/W
48-Lead QFN
Package may or may not include the following marks: Si or
Operating Supply Voltages
(
Over operating conditions unless otherwise specified, V
Sym
V
DD
V
SS
V
LL
V
SIG
R
ON
∆R
ON
V
F
C
T
I
FM
I
DDQ
I
DD30
HD2
Parameter
Voltage power supply
Voltage power supply
Voltage power supply
Signal input range (p-p)
Cross-point switch ON resistance
Ch to Ch R
ON
difference
Diode forward voltage
Diode total capacitance
Diode forward continuous current
V
DD
supply current 0MHz
V
DD
supply current 30MHz
Second harmonic distortion
Min
4.75
-5.25
2.3
-
-
-
-
-
-
-
-
-
Typ
5.0
-5.0
3.3
±500
50
±5
0.8
-
100
2.2
7.0
-55
Max
5.25
-4.75
3.6
-
60
-
1.0
15
-
3.0
30
-50
LL
= 3.3V, V
DD
= +5V, T
j
= 25°C)
Unit
V
mV
Ω
%
V
pF
mA
mA
mA
dB
Conditions
T
A
= 0 to 70°C
5MHz sine wave, no clipping
I
X
= ±5.0mA, V
X0~3
= ±300mV
Switches ON resistance match
within IC.
1mA
V
R
= 0V, f = 1MHz
on 4x4inch PCB, V
F
=1.2V
SDI = SCK = 0, CS = 0
f
SCK
= 30MHz, SDI = CS = 0
5MHz ±300mVp-p sine wave
Doc.# DSFP-MD0201
NR011314
2
Supertex inc.
www.supertex.com
MD0201
T/R Switch Characteristics
(Over operating conditions unless otherwise specified, V
Sym
V
X
R
TRSW
V
TRIP
V
OFF
I
OFF
I
PEAK
T
OFF
T
ON
C
SW(ON)
C
SW(OFF)
Parameter
Max X
0~3
to GND input voltage
T/R switch ON resistance
VX
0~3
trip point to turn off
Switch turn off voltage
Switch off current
Peak T/R switch current
Turn off time
Turn on time
Switch on capacitance
Switch off capacitance
Min
±130
-
-
-
-
-
-
-
-
-
Typ
-
15
±1.0
±2.0
±200
±60
-
-
21
15
Max
-
-
±2.0
-
±300
-
20
20
-
-
LL
= 3.3V, V
DD
= +5V, T
j
= 25°C)
Unit
V
Ω
V
V
µA
mA
ns
ns
pF
pF
Conditions
I
X
= ±500μA
I
X
= ±5.0mA
---
I
A-B
= ±1.0mA
X
n
= ±100V
---
---
---
T/R SW = ON
X
n
= ±25V
LL
Clock and Logic I/O Characteristics
(Over operating conditions unless otherwise specified, V
V
IH
V
IL
I
IH
I
IL
C
IN
I
OH
I
OL
V
OH
V
OL
Input logic high voltage
Input logic low voltage
Input logic high current
Input logic low current
Input capacitance
V
DOUT
sourcing current
V
DOUT
sinking current
Output logic high voltage
Output logic low voltage
2.5
0
-
-1.0
-
4.0
4.0
-
-
3.3
-
0.4
-
2.0
-
-
1.59
0.67
5.0
0.6
1.0
-
5.0
-
-
-
-
V
V
µA
µA
pF
mA
mA
V
V
LL
= 3.3V, V
DD
= +5V, T
j
= 25°C)
---
---
---
---
---
V
LL
= 2.3V, V
DOUT
= 0
V
LL
= V
DOUT
= 2.3V
I
OH
=-2.0mA
I
OL
=-2.0mA
AC Electrical Characteristics
(Over operating conditions unless otherwise specified, V
t
d(on)
t
d(off)
t
co(on)
t
co(off)
V
STG
BW
Q
C
K
O
K
CR
C
(ON)
C
(OFF)
f
CLK
LV SW turn on time
LV SW turn off time
Output shunt switch on time
Output shunt switch off-delay
Shunt on-short trig voltage level
Small signal bandwidth with T/R SW
LV SW charge injection
OFF isolation
On channel crosstalk
On capacitance output to RGND
Off capacitance output to RGND
Serial clock frequency
-
-
-
1.0
-
-
-
-
-
-
-
-
20
20
40
2.0
±0.8
85
2.6
-65
-55
37
23
25
30
30
50
3.0
-
-
3.5
-
-
-
-
-
= 3.3V, V
DD
= +5V, T
j
= 25°C)
ns
ns
ns
µs
V
MHz
pC
dB
pF
MHz
---
---
V
X
= 5.0V
---
R
LOAD
= 50Ω
V
S
=1.0V, R
S
= 0Ω, C
LOAD
= 100pF
at 10MHz, R
LOAD
= 50Ω
from OA~OD to RGND
---
Doc.# DSFP-MD0201
NR011314
3
Supertex inc.
www.supertex.com
MD0201
AC Electrical Characteristics
(cont.)
(Over operating conditions unless otherwise specified, V
Sym
t
SD
t
WLE
t
DO
t
WCLR
t
SU
t
h
t
rf
V
SPK
Parameter
Setup time before LE rises
Time width of LE
CLK delay time to data out
Time width of CLR
Set up time data to clock
Hold time data from clock
CLK rise and fall time
Spike of shunt switching on
Spike of shunt switching off
Min
-
-
-
55
-
-
1.5
-
-
Typ
10
20
13
15
5.0
5.0
-
60
10
Max
-
-
-
-
-
-
-
100
-
mV
All cross-point switches off,
50Ω on O0~3 to GND
1k on X0~3 to GND
ns
At 25MHz
V
DD
= 4.75V
V
LL
= 2.5V
Unit
LL
= 3.3V, V
DD
= +5V, T
j
= 25°C)
Conditions
20-bit Control Shift Registers
MSB
D19
Unused
D19
TMR
SW[D3:A0]
D17
SSTE
D16
FASN
0
1
0
1
0
1
0
1
Data Bits in the Register
D15
SWA0
D14
SWB0
D13
SWC0
D12
SWD0
D11
SWA1
...
...
D1
SWC3
LSB
D0
SWD3
LV switches off*
LV switches on
Set on-time to 1.0us*
Set on-time to 2.0us
Shunt switch trig Disabled*
Shunt switch trig Enabled
Normal trig *
Force all shunt switch on
Low voltage analog cross-point switch on/off
control data. Each data bit controls each channel
LV switch independently.
The shunt switches controlled by a re-trigable
one-short timer. TMR sets the one short on-time
for all channels.
SSTE = 0 trig disabled
TMR
SSTE
FASN
FASN = 0 trig causing shunt switch on for a
period of TMR defined time.
Notes:
1. D[15:0] are the cross-point switch SW[D3:A0] control data bits.
2. Shift in MSB first.
3. D19 is reserved.
4. The * denotes power-on defaults status.
Doc.# DSFP-MD0201
NR011314
4
Supertex inc.
www.supertex.com
MD0201
Logic Timing Waveforms
D
N+1
D
N
50%
50%
D
N-1
FCVC"KP
FKP
NG
50%
t
WLE
50%
50%
t
SD
ENQEM
ENM
t
SU
50%
t
H
50%
t
DO
DO
50%
FCVC"QWV
FQWV
t
OFF
t
ON
90%
10%
X
QWV
*v{r+
QHH
QP
ENT
50%
t
WCL
50%
T/R Switch Typical I-V Curve
+I
PEAK
I
A-B
I
A-B
= +200µA
-100V
-V
OFF
+1.0mA
-V
TRIP
+V
TRIP
+1.0mA
I
A-B
= -200µA
R
SW
= 15Ω
+V
OFF
V
A-B
+100V
-I
PEAK
Doc.# DSFP-MD0201
NR011314
5
Supertex inc.
www.supertex.com
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