MD1210
High Speed Dual MOSFET Driver
Features
General Description
► 6ns rise and fall time with 1000pF load
► 2.0A peak output source/sink current
► 1.2V to 5V input CMOS compatible
► 4.5V to 13V total supply voltage
► Smart Logic threshold
► Low jitter design
► Two matched channels
► Outputs can swing below ground
► Low inductance package
► Thermally-enhanced package
The Supertex MD1210 is a high speed, dual MOSFET driver.
It is designed to drive high voltage P and N-channel MOSFET
transistors for medical ultrasound and other applications requiring
a high output current for a capacitive load. The high-speed input
stage of the MD1210 can operate from 1.2V to 5.0V logic interface
with an optimum operating input signal range of 1.8V 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.
VDD1, VDD2, and V should be connected to the positive supply
voltage, and VSS1,HVSS2, and VL should be connected to 0V or to
Ground.The GND pin is the logic control input signal digital ground.
The output stage is capable of peak currents of up to 2.0A,
depending on the supply voltages used and load capacitance
present.
Applications
► Medical ultrasound imaging
► Piezoelectric transducer drivers
► Nondestructive evaluation
► PIN diode driver
► CCD Clock driver/buffer
► High speed level translator
The OE pin serves a dual purpose. First, its logic H level is used
to compute the threshold voltage level for the channel input level
translators. Secondly, when OE is low, the outputs are disabled,
with theAoutput high and the B output low. This assists in properly
pre-charging the AC coupling capacitors that may be used in
series in the gate drive circuit of an external PMOS and NMOS
transistor pair.
Typical Application Circuit
+12V
V
DD1
VDD2
VH
0.47µF
OE
INA
Level
Shifter
+100V
1µF
OUTA
Level
Shifter
10nF
10nF
V
SS2
VL
VH
To Piezoelectric
Transducer
3.3V CMOS
Logic Inputs
V
DD2
-100V
INB
Level
Shifter
1µF
OUTB
Supertex
TC6320TG
MD1210
Gnd
VSS1
VSS2
VL