MD1715DB2 Microchip

MD1715DB2 Supertex inc. MD1715+TC8020 Demoboard High Speed 100V 3.2A Pulser Features General Description Demo dual-transducer ultrasound transmitter The MD1715DB2 demoboard can drive two transducers as MD1715 driving TC8020 with 12 MOSFETs a five-level, two channel transmitter for ultrasound and other applications. 5-level voltage pulse waveforms outputs 3.2 A source and sink current capability The demoboard consists of one MD1715 in a 6x6mm 40-lead 100MHz frequency clock on board QFN package driving 12 high voltage FETs in six TC8020s in Programmable logic waveform generation one 8x8mm 56-lead QFN package. The CPLD programmable JTAG connection for CPLD programming logic circuit 40MHz crystal oscillator generates accurate SMA connectors for external clock and signals timing high-speed waveforms on a separate CPL board. There 1.8 to 3.3V CMOS logic interface are multiple frequencie and waveform combinations that can be selected as bipolar pulse waveforms. External clock Applications input can be used if the on board oscillator is disabled. The Medical ultrasound imaging external trigger input can be used to synchronize the output Ultrasonic NDT detection waveforms. There are five push buttons for selecting the Piezoelectric transducer drivers demo waveform, frequency, phase, mode selection functions. Capacitive and MEMS sensor driver Color LEDs indicate the demo selection states. Jumpers on Material flaw detection board for select the SMA connector to the external loads or ATE and waveform generator the 220pF//1k on board dummy load. Block Diagram TC8020 +12V +12V +12V V 1 6 of 12 FETs AV V 1 V 2 PP DD DD DD SP1 MD1715 V 2 DD 1 of 2 channels OP1 GP1 DP1 V 2 DD DN1 ON1 GN1 V 1 NN SN1 High Speed V 2 PP Gate Buffers SP2 VLL/EN V 1 DD OP2 GP2 Control DP2 SEL Logic and POS V 1 Level DD 100 NEG DN2 Translation ON2 GN2 V 2 NN SN2 High Speed GND Gate Buffers SP3 OP3 GP3 DP3 V SS V 1 DD DN3 ON3 GN3 SN3 GND PAD AVSS VSS PAD VSUB -12V -12V -100V Doc. DSDB-MD1715DB2 Supertex inc. A032713 www.supertex.comMD1715DB2 MD1715/+TC8020DB2 Schematic Block Diagram +12V +5.0V +12V AVDD VDD2 VDD1 +3.3V JTAG 6 VLL/EN EXTRG SELA POSA Waveform NEGA EXCLK Logic Generator Control and SELB CPLD 100MHz Level POSB Translation OSC CLK NEGB IN EN J17/18 EXT 5 LED1 WAVE LED2 FREQ -12V PWR SEL ENA AVSS (SUB) CLMP VSS MOD ENAB AGND DGND MD1715 (1 of 2 I/O channels shown) MD1715+TC8020DB2 Demo Board PCB Layout Actual size: 100mm x 60mm Doc. DSDB-MD1715DB2 Supertex inc. A032713 2 www.supertex.com