MICROCHIP MD1811K6-G

A high-speed quad-MOSFET driver designed to drive high-voltage P-channel and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high-output current for a capacitive load. The high-speed input stage can operate from a 1.8V to 5V logic interface with an optimum operating input signal range of 1.8V to 3.3V. An adaptive threshold circuit sets the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, providing DC coupling together with high-speed operation. The output stage has separate power connections, enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. The output stage is capable of peak currents of up to ±2A, depending on the supply voltages used and load capacitance present. The OE pin serves a dual purpose: computing the threshold voltage level for the channel input level translators and disabling the outputs when low.

• 6 ns Rise and Fall Time
• 2A Peak Output Source and Sink Currents
• 1.8V to 5V Input CMOS Compatible
• 5V to 12V Total Supply Voltage
• Smart Logic Threshold
• Low-Jitter Design
• Four Matched Channels
• Drives Two P-Channel and Two N-Channel MOSFETs
• Outputs can Swing Below Ground
• Low-Inductance Package
• High-Performance, Thermally Enhanced Package

• Medical Ultrasound Imaging
• Piezoelectric Transducer Drivers
• Non-Destructive Testing
• PIN Diode Driver
• CCD Clock Driver/Buffer
• High-Speed Level Translator