MD1822 Datasheet | Supertex

Features - - Mixed inversion MOSFET driver - - 6.0ns rise and fall time - - 2.0A peak output source/sink current - - 1.8 to 5.0V input CMOS patible - - 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 packaging Applications - - Medical ultrasound imaging - - Piezoelectric transducer drivers - - Non-Destructive Testing (NDT) - - PIN diode driver - - CCD Clock driver/buffer - - High speed level translator General Description The Supertex MD1822 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 MD1822 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. The output stage of the MD1822 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. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to pute the threshold voltage level for the...