Supertex inc. MD1712 High Speed, Integrated Ultrasound Driver IC Features General Description Drives two ultrasound transducer channels The Supertex MD1712 is a two-channel, five-level, high Generates five-level waveform voltage and high speed transmitter driver IC. It is designed for medical ultrasound imaging applications, but can also be Drives 12 high voltage MOSFETs used for metal flaw detection, Non-Destructive Testing (NDT), 2.0A source and sink peak current and for driving piezoelectric transducers. Up to 20MHz output frequency 12V/ns slew rate The MD1712 is a two-channel logic controller circuit with 3.0ns matched delay times low impedance MOSFET gate drivers. There are two sets of Second harmonic is less than -40dB control logic inputs, one for channel A and one for channel B. Two separate gate drive voltages Each channel consists of three pairs of MOSFET gate drivers. 1.8 to 3.3V CMOS logic interface 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 Applications are designed to have the same impedance and can provide Medical ultrasound imaging peak currents of over 2.0 amps. Piezoelectric transducer drivers Non-Destructive Testing (NDT) Metal flaw detection Sonar transmitter Typical Application Circuit +5.0V +10V -10V +10V 0.22F 0.22F0.22F 0.22F TC6320 +10V 0.22F 40 36 35 33 45 43 42 31 V 1 +100V PP FB DVDD2 DGND DVDD1 DVSS DGND DVDD1DGND 30 AVDD1 DV 2 1F 6 DD 39 OUTPA1 0.1F 47 10nF EN Control Logic DV 2 DD 13 37 OUTNA1 SEL & Level 10nF 1 V 1 Translator NN POSA / POS1A 2 1F NEGA / NEG1A -100V 3 +50V V 2 HVEN1A / POS2A PP 4 HVEN2A / NEG2A 1F DV 1 DD 5 41 OUTPA2 CLAMPA 10nF +3.3V MD1712 46 DV 1 DD (1/2 of I/O) 34 OUTNA2 0.1F VLL TRANSDUCER 10nF V 2 NN 48 AVSS 1F -50V 0.1F 0V AVSS 14 SUB 15 0.1F 44 OUTPA3 AVSS V SS DV 2 DD 32 OUTNA3 DGND DVSS DVDD1 DVDD2 AGND DVDD1 DVDD2 DGND -10V 0V 718 19 16 21 28 26 25 0 0.22F 0 +10V -10V +10V +5.0V Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com MD1712 Pin Configurations Ordering Information 48 Package Options 1 48-Lead LQFP 48-Lead QFN Device 7.00x7.00mm body 7.00x7.00mm body 1.60mm height (max) 1.00mm height (max) 0.50mm pitch 0.50mm pitch 48 MD1712 MD1712FG-G MD1712K6-G 1 -G indicates package is RoHS compliant (Green) 48-Lead LQFP (FG) 48-Lead QFN (K6) (top view) (top view) Package Marking Top Marking YYWW YY = Year Sealed Absolute Maximum Ratings MD1712FG WW = Week Sealed LLLLLLLLL Parameter Value L = Lot Number C = Country of Origin* V logic supply voltage -0.5V to +5.5V Bottom Marking LL A = Assembler ID* AV 1, DV 1, positive gate drive supply -0.5V to +15V DD DD = Green Packaging CCCCCCCC AAA *May be part of top marking DV 2, positive gate drive supply -0.5V to +15V DD AV , DV , negative gate drive supply -15V to +0.5V SS SS Package may or may not include the following marks: Si or Thermal resistance ( ): JA 48-Lead LQFP (FG) 50C/W 48-Lead LQFP* 29C/W 48-Lead QFN* L = Lot Number MD1712K6 YY = Year Sealed Maximum junction temperature +125C LLLLLLLLL WW = Week Sealed A = Assembler ID YYWW Storage temperature -65C to 150C C = Country of Origin AAA CCC = Green Packaging Power dissipation 1.2W Package may or may not include the following marks: Si or Absolute Maximum Ratings are those values beyond which damage to the 48-Lead QFN (K6) 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. * 1.0oz 4-layer 3x4 PCB Operating Supply Voltages and Currents (Over operating conditions unless otherwise specified, AV 1 = DV 1 = DV 2 = 10V, AV = DV = -10V, V = 3.3V, T = 25C) DD DD DD SS SS LL A Sym Parameter Min Typ Max Units Conditions V Logic supply +1.8 +3.3 +5.0 V --- LL AV Positive drive bias supply +8.0 +10 +12.6 V --- DD1 DV Positive gate drive supply +4.75 - +12.6 V --- DD1 DV Positive gate drive supply +4.75 - +12.6 V --- DD2 AV DV Negative gate drive and bias supply -12.0 -10 -8.0 V --- SS, SS I Logic supply current - 2.0 - VLL I Positive bias current - 5.0 - All channels on at 5.0Mhz, AVDD1 mA no load I I Negative drive and bias supply current - 20 - AVSS & DVSS I Positive drive current 1 - 55 - DVDD1 Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com 2