General Description
The Supertex MD1820 is a high speed, four channel MOSFET driver designed to drive high voltage P- 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 of the MD1820 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set 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, which provides DC coupling together with high-speed operation.

FEATUREs
► Non-inverting, four channel MOSFET driver
► 6.0ns rise and fall time
► 2.0A peak output source/sink current
► 1.8 to 5.0V input CMOS compatible
► 5.0 to 10V total supply voltage
► Smart logic threshold
► Low jitter design
► Four matched channels
► Drives two P- and two N-channel MOSFETs
► Outputs can swing below ground
► Low inductance quad flat no-lead package
► High performance, thermally-enhanced package

APPLICATIONs
► Medical ultrasound imaging
► Piezoelectric transducer drivers
► Non-Destructive Testing (NDT)
► PIN diode driver
► CCD Clock driver/buffer
► High speed level translator