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PDF MD1820K6-G Data sheet ( Hoja de datos )
| Número de pieza | MD1820K6-G | |
| Descripción | Four Channel MOSFET Driver | |
| Fabricantes | Supertex | |
| Logotipo |  |
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Supertex inc.
MD1820
High Speed, Four Channel MOSFET Driver
with Non-Inverting Outputs
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
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.
The output stage of the MD1820 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 compute the threshold
voltage level for the channel input level translators. Second, when PE
is low, the outputs are HiZ. This assists in properly precharging 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
+10V
0.47µF
VDD
PE
+10V
0.47µF
VH
10nF
+100V
1.0µF
3.3V CMOS
Logic Inputs
INA
INB
INC
IND
OUTA
OUTB
OUTC
OUTD
10nF
Supertex
TC6320
-100V
1.0µF
+10V
1.0µF
HVOUT
GND VSS VL
10nF
Supertex
MD1820
10nF
Supertex
TC6320
-10V
1.0µF
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
1 page  
Typical Applications
2-Channel +100V to -100V Pulser
+10V
+10V
0.47μF
PE
INA
VDD VH
OUTA
0.47μF
10nF
10nF
3.3V CMOS
Logic Inputs
INB
INC
OUTB
OUTC
Supertex
TC6320
+100V
0.1µF
To Piezoelectric
Transducer
-100V
0.1µF
+100V
0.1µF
OUTD
IND
GND VSS VL
Supertex
MD1820
10nF
To Piezoelectric
Transducer
10nF
Supertex
TC6320
-100V
0.1µF
MD1820
Single Channel ±100V to 0V Pulser
+5.0V
+5.0V
0.47μF
0.47μF
VDD VH
10nF
PE
OUTA
INA
10nF
3.3V CMOS
Logic Inputs
INB
INC
OUTB
OUTC
+100V
0.1µF
To Piezoelectric
Transducer
Supertex
TC6320
-100V
0.1µF
OUTD
IND
GND
-5.0V
VSS VL
-5.0V
0.47μF
Supertex
MD1820
0.47μF
Supertex
TC2320
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MD1820K6-G.PDF ] | |
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