MD1210
High Speed Dual MOSFET Driver
Features
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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
General Description
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.
V
DD1
, V
DD2
, and V
H
should be connected to the positive supply
voltage, and V
SS1
, V
SS2
, and V
L
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.
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 the A output 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.
Applications
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Medical ultrasound imaging
Piezoelectric transducer drivers
Nondestructive evaluation
PIN diode driver
CCD Clock driver/buffer
High speed level translator
Typical Application Circuit
+12V
V
DD
1
OE
Level
Shifter
Level
Shifter
OUT
A
+100V
1µF
V
DD
2
V
H
0.47µF
IN
A
10nF
3.3V CMOS
Logic Inputs
V
SS
2
V
L
V
H
V
DD
2
10nF
IN
B
Level
Shifter
-100V
To Piezoelectric
Transducer
OUT
B
Supertex
TC6320TG
1µF
MD1210
Gnd
V
SS
1
V
SS
2
V
L
SUPERTEX [ Supertex, Inc ]
