MD1712 Datasheet PDF - Supertex

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MD1712
Supertex

Part Number MD1712
Description Integrated Ultrasound Driver IC
Page 12 Pages


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Supertex inc.
MD1712
High Speed, Integrated Ultrasound Driver IC
Features
►Drives two ultrasound transducer channels
Generates five-level waveform
►Drives 12 high voltage MOSFETs
►±2.0A source and sink peak current
Up to 20MHz output frequency
►12V/ns slew rate
±3.0ns matched delay times
Second harmonic is less than -40dB
►Two separate gate drive voltages
1.8 to 3.3V CMOS logic interface
Applications
►Medical ultrasound imaging
►Piezoelectric transducer drivers
Non-Destructive Testing (NDT)
Metal flaw detection
Sonar transmitter
General Description
The Supertex MD1712 is a two-channel, five-level, high
voltage and high speed transmitter driver IC. It is designed
for medical ultrasound imaging applications, but can also be
used for metal flaw detection, Non-Destructive Testing (NDT),
and for driving piezoelectric transducers.
The MD1712 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 MD1712 drives six TC6320s. Each
pair consists of 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.
Typical Application Circuit
0.22µF
+10V
40 36
FB DVDD2
AVDD1 6
0.1µF
EN
SEL
POSA / POS1A
NEGA / NEG1A
HVEN1A / POS2A
HVEN2A / NEG2A
CLAMPA
+3.3V
0.1µF
47
13
1
2
3
4
5
46
VLL
+5.0V
35
+10V
-10V
0.22µF
0.22µF
0.22µF
+10V
33 45
43 42 31
0.22µF
DGND DVDD1 DVSS
DGND DVDD1 DGND
DVDD2 30
39
OUTPA1
TC6320
+100V
Control Logic
& Level
Translator
DVDD2
37
10nF
OUTNA1
10nF
MD1712
(1/2 of I/O)
DVDD1
41 OUTPA2
10nF
DVDD1
34 OUTNA2
-100V
+50V
10nF
0.1µF
48 AVSS
-50V
0V
0.1µF
14 AVSS
15
AVSS
SUB
44 OUTPA3
VSS
DVDD2
32
OUTNA3
VPP1
1µF
VNN1
1µF
VPP2
1µF
VNN2
1µF
TRANSDUCER
-10V
DGND
DVSS
DVDD1
DVDD2
AGND
DVDD1
DVDD2
DGND
7 18 19 16 21 28
26 25
0
0.22µF
+10V
-10V
+10V
+5.0V
0V
0
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com



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MD1712
Ordering Information
Package Options
Device
48-Lead LQFP
7.00x7.00mm body
1.60mm height (max)
0.50mm pitch
48-Lead QFN
7.00x7.00mm body
1.00mm height (max)
0.50mm pitch
MD1712
MD1712FG-G
-G indicates package is RoHS compliant (‘Green’)
MD1712K6-G
Pin Configurations
48
1
48-Le(taodpLvQieFwP) (FG)
48
1
48-L(etoapd vQiFewN)(K6)
Package Marking
Top Marking
Absolute Maximum Ratings
Parameter
VLL logic supply voltage
AVDD1, DVDD1, positive gate drive supply
DVDD2, positive gate drive supply
Value
-0.5V to +5.5V
-0.5V to +15V
-0.5V to +15V
YYWW
MD1712FG
LLLLLLLLL
YY = Year Sealed
WW = Week Sealed
L = Lot Number
Bottom Marking C = Country of Origin*
A = Assembler ID*
CCCCCCCC
AAA
= “Green” Packaging
*May be part of top marking
AVSS, DVSS, negative gate drive supply
Thermal resistance (θJA):
48-Lead LQFP*
-15V to +0.5V
50°C/W
Package may or may not include the following marks: Si or
48-Lead LQFP (FG)
48-Lead QFN*
Maximum junction temperature
29°C/W
+125C
MD1712K6
LLLLLLLLL
L = Lot Number
YY = Year Sealed
WW = Week Sealed
Storage temperature
-65°C to 150°C
Power dissipation
1.2W
Absolute Maximum Ratings are those values beyond which damage to the
device may occur. Functional operation under these conditions is not implied.
YYWW
AAA CCC
A = Assembler ID
C = Country of Origin
= “Green” Packaging
Package may or may not include the following marks: Si or
48-Lead QFN (K6)
Continuous operation of the device at the absolute rating level may affect
device reliability. All voltages are referenced to device ground.
* 1.0oz 4-layer 3x4” PCB
Operating Supply Voltages and Currents
(Over operating conditions unless otherwise specified, AVDD1 = DVDD1 = DVDD2 = 10V, AVSS = DVSS = -10V, VLL = 3.3V, TA = 25°C)
Sym Parameter
Min Typ Max Units Conditions
VLL Logic supply
+1.8 +3.3 +5.0 V ---
AVDD1 Positive drive bias supply
+8.0 +10 +12.6 V ---
DVDD1 Positive gate drive supply
+4.75 - +12.6 V ---
DVDD2 Positive gate drive supply
+4.75 - +12.6 V ---
AVSS, DVSS Negative gate drive and bias supply
-12.0 -10 -8.0 V ---
IVLL Logic supply current
- 2.0 -
IAVDD1 Positive bias current
I IAVSS & DVSS Negative drive and bias supply current
-
-
5.0
20
-
-
mA
All channels on at 5.0Mhz,
no load
IDVDD1 Positive drive current 1
- 55 -
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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MD1712
Operating Supply Voltages and Currents (cont.)
(Over operating conditions unless otherwise specified, AVDD1 = DVDD1 = DVDD2 = 10V, AVSS = DVSS = -10V, VLL = 3.3V, TA = 25°C)
IDVDD2
IAVDD1Q
IAVSSQ
IDVDD1Q
IDVDD2Q
IVLLQ
Positive drive current 2
VAVDD1 quiescent current
VAVSS quiescent current
VDVDD1 quiescent current
VDVDD2 quiescent current
Logic supply current
-
13
-
mA
All channels on at 5.0Mhz,
DVDD2 = 5.0, no load
- 2.0 - mA
- 0.75 -
mA
- - 10 µA EN = low, All inputs low or high.
- - 10 µA
- 1.0 - mA
DC Electrical Characteristics
(Over operating conditions unless otherwise specified, AVDD1 = DVDD1 = DVDD2 = 10V, AVSS = DVSS = -10V, VLL = 3.3V, TA = 0 to 70°C)
P-Channel Gate Driver Outputs
Sym Parameter
Min Typ Max Units Conditions
RSINK
RSOURCE
ISINK
ISOURCE
Output sink resistance
Output source resistance
Peak output sink current
Peak output source current
- - 6.0 Ω ISINK = 100mA
- - 6.0 Ω ISOURCE = 100mA
- 2.0 - A ---
- 2.0 - A ---
N-Channel Gate Driver Outputs
Sym Parameter
Min Typ Max Units Conditions
RSINK
RSOURCE
ISINK
ISOURCE
Output sink resistance
Output source resistance
Peak output sink current
Peak output source current
- - 10 Ω ISINK = 100mA
- - 10 Ω ISOURCE = 100mA
- 1.5 - A ---
- 1.5 - A ---
Logic Inputs
Sym Parameter
Min Typ Max Units Conditions
VIH Input logic high voltage
VIL Input logic low voltage
IIH Input logic high current
IIL Input logic low current
0.8VLL
-
VLL V ---
0
-
0.2VLL
V ---
- - 1.0 µA ---
-1.0 -
- µA ---
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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MD1712
AC Electrical Characteristics
(Over operating conditions unless otherwise specified, AVDD1 = DVDD1 = DVDD2 = 10V, AVSS = DVSS = -10V, VLL = 3.3V, TA = 0 to 70°C)
Sym Parameter
Min Typ Max Units Conditions
fOUT Output frequency range
- - 20 MHz ---
tPH
Propagation delay when
output is from low to high
- 19 - ns No load, see timing diagram
tPL
Propagation delay when
output is from high to low
- 19 - ns No load, see timing diagram
tr
tf
ΔtDM
ΔtDLAY
SR
HD2
Output rise time
Output fall time
Delay time matching
Output jitter
Output slew rate
2nd harmonic distortion
- 8.0 - ns 1000pF load, see timing diagram
- 8.0 - ns 1000pF load, see timing diagram
- - ±3.0 ns No load, from device to device
- 30 - ps Standard deviation of tD samples (1k)
- 12 - V/ns Measured at TC6320 output
- -40 - dB with 100Ω load
Power-Up Sequence
Step Connection
1 AVSS , DVSS
2 VLL, AVDD1, DVDD1 & DVDD2
Description
Negative gate drive supply and substrate bias
Logic supply, positive gate drive supply and bias
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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