MD1711

Rev.12

011005

1

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

Applications

Medical ultrasound imaging

Piezoelectric transducer drivers

Metal flaw detection

Nondestructive evaluation

Sonar Transmitter

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

Typical Application Circuit (1 of 2 Channels)

V

TC6320

+100V

-100V

+50V

-50V

0V

0V

30

32

34

44

39

41

37

DV DD2

DV DD2

DV DD1

DV DD1

V

SS

DV DD1

-10V

DV

DV

16

19

21

+10V

VL L

+3 . 3 V

AV S S

48

14

15

AV

SS

SEL

POSA / POS1A

EN

DGND

AGND

0

MD1711

(1/2 of I/O)

SU B

7

18

AV S S

33

36

28

25

31

DGND

35

40

42

43

DV

SS

45

FB

AV

6

0

46

47

13

1

2

3

4

5

OUTPA1

OUTNA1

OUTPA2

OUTNA2

OUTPA3

DGND

DGND

+5V

DV

+1 0 V

DV

+5 V

+10V

+1 0 V

26

DGND

+10V

-10V

-1 0 V

DV

Transducer

0.22

µF

Control Logic

& Level

Translator

NEGA / NEG1A

HVEN1A / POS2A

HVEN2A / NEG2A

ClampA

0.1

µF

0.1

µF

0.1

µF

0.22

µF

0.22

µF

0.22

µF

0.22

µF

0.22

µF

0.1

µF

10nF

10nF

10nF

10nF

1

µF

1

µF

1

µF

1

µF

V

V

V