MD1711
High Speed, Integrated Ultrasound Driver IC
Features
Drives two ultrasound transducer channels
Generates 5-level waveform
Drives 12 high voltage MOSFETs
±2.0A source and sink peak current
Up to 20MHz output frequency
12V/ns slew rate
±3ns matched delay times
Second harmonic is less than -40dB
Two separate gate drive voltages
1.8V to 3.3V CMOS logic interface
General Description
The Supertex MD1711 is an IC for a two-channel, 5-
level, high voltage and high-speed transmitter driver. It
is designed for medical ultrasound imaging
applications but can also be used for metal flaw
detection, nondestructive evaluation, and driving
piezoelectric transducers.
The MD1711 is a two-channel logic controller circuit
with low impedance MOSFET gate drivers. There are
two sets of control logic inputs, one for channel A and
one for Channel B. Each channel consists of three
pairs of MOSFET gate drivers. These drivers are
designed to match the drive requirements of the
Supertex TC6320. The MD1711 drives six TC6320s.
Each pair an N-channel and a P-channel MOSFET.
They are designed to have the same impedance and
can provide peak currents of over 2.0 amps
.
Applications
Medical ultrasound imaging
Piezoelectric transducer drivers
Metal flaw detection
Nondestructive evaluation
Sonar Transmitter
Typical Application Circuit (1 of 2 Channels)
+5 V
0.22
µF
+1 0 V
-1 0 V
0.22
µF
+1 0 V
0.22
µF
0.22µF
0.22
µF
+10V
FB
6
0.1µF
TC6320
+100V
V
PP
1
1µF
40 36 35
DV
DD
2
AV
DD
1
33 45
43
DGND
42
31
DGND
DV
SS
DV
DD
1
DV
DD
1
30
DGND
DV DD 2
OUTPA1
EN
SEL
POSA / POS1A
NEGA / NEG1A
HVEN1A / POS2A
HVEN2A / NEG2A
ClampA
+3 . 3 V
0.1
µF
47
13
1
2
39
Control Logic
& Level
Translator
10nF
DV DD 2
OUTNA1
37
10nF
V
NN
1
-100V
1µF
3
4
DV DD1
+50V
V
PP
2
1µF
5
46
OUTPA2
MD1711
VL L
41
DV DD1
10nF
(1/2 of I/O)
OUTNA2
34
48
0.1
µF
10nF
V
NN
2
-50V
0V
1µF
AV S S
Transducer
0.1
µF
14
15
AV S S
SU B
OUTPA3
AV
SS
SS
DV DD 1
V
44
OU
TNA3
32
-10V
AGND
DGND
DV
DD
1
D
VSS
DV
DD
2
DV
DD
1
DGND
DV
DD
2
0V
7
0
18
19
16
21
28
26 25
0.22µF
+10V
-10V
+10V
+5V
0
1
Rev.12
011005
SUPERTEX [ Supertex, Inc ]
