MD1813 Supertex, Inc., MD1813 Datasheet

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MD1813

Manufacturer Part Number
MD1813
Description
High Speed Quad Mosfet Driver
Manufacturer
Supertex, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MD1813K6-G
Manufacturer:
Supertex
Quantity:
1 837
Features
Applications
Typical Application Circuit
6ns rise and fall time
2.0A peak output source/sink current
1.2V to 5.0V input CMOS compatible
±5.0V to ±9.0V supply voltage operation
Smart Logic threshold
Low jitter design
Quad matched channels
Drives two N and two P-channel MOSFETs
Outputs can swing below ground
Built-in level translator for negative gate bias
Non-inverting gate driver OUTD for easy logic
Low inductance quad flat no-lead package
Thermally-enhanced package
Ultrasound PN code transmitter
Medical ultrasound imaging
Piezoelectric transducer drivers
Nondestructive evaluation
High speed level translator
High voltage bipolar pulser
3.3V CMOS
Logic Inputs
PULSE
DAMP
ENAB
High Speed Quad MOSFET Driver
16
15
0.22 F
1
6
5
OE
IN
IN
IN
IN
+10V
A
B
C
D
GND
3
V
DD
14
7
V
Supertex
MD1813
SS
2
V
L
LT
11
V
4
0.47 F
V
NEG
H
General Description
The Supertex MD1813 is a high-speed quad MOSFET driver. It is
designed to drive two N- and two P-channel, high voltage, DMOS
FETs for medical ultrasound applications, but may be used in any
application that needs a high output current for a capacitive load.
The input stage of the MD1813 is a high-speed level translator that
is able to operate from logic input signals of 1.2 to 5.0V amplitude.
An adaptive threshold circuit is used to set the level translator
threshold to the average of the input logic 0 and logic 1 levels.
The level translator uses a proprietary circuit, which provides DC
coupling together with high-speed operation.
The output stage of the MD1813 has separate power connections,
enabling the output signal L and H levels to be chosen independently
from the driver supply voltages. 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 ±2.0 amps, depending on the supply voltages
used and load capacitance. 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 coupling
capacitors that may be used in series in the gate drive circuit of an
external PMOS and NMOS. A built-in level shifter is for PMOS gate
negative bias driving. It enables the user-defined damping control
to generate return-to-zero bipolar output pulses. The MD1813 has
a non-inverting driver OUTD for easy logic.
OUT
OUT
OUT
OUT
OUT
+10V
-10V
G
C
D
A
B
0.47 F
13
12
10
9
8
2K
10nF
10nF
10nF
Supertex
Supertex
TC6320
TC2320
+100V
-100V
1 F
1 F
To Piezoelectric
Transducer
MD1813

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MD1813 Summary of contents

Page 1

... FETs for medical ultrasound applications, but may be used in any application that needs a high output current for a capacitive load. The input stage of the MD1813 is a high-speed level translator that is able to operate from logic input signals of 1.2 to 5.0V amplitude. An adaptive threshold circuit is used to set the level translator threshold to the average of the input logic 0 and logic 1 levels ...

Page 2

... Y = Last Digit of Year Sealed 1813 W = Code for Week Sealed Lot Number = “Green” Packaging 16-Lead QFN (K6) Units Conditions V --- V --- V --- V --- V May connect to VSS if OUTG not used mA --- µ 9.0V GND = 0V -9.0V, One channel on at 5.0Mhz, NEG No load MD1813 12 9 ...

Page 3

... For logic inputs INA, INB, INC, and IND µA V For logic input OE KΩ pF --- Units Conditions ns Logic input edge speed requirement C = 1000pF, see timing diagram ns LOAD Input signal rise/fall time 2ns ns for each channel ns Device to device delay match Units Conditions Ω 50mA SINK Ω 50mA SOURCE A --- A --- MD1813 ...

Page 4

... GND to VCC, where VCC is 1.2 to 5.0 volts. Good trace practices should be followed corresponding to the desired operating speed. The internal circuitry of the MD1813 is capable of operating up to 100MHz, with the primary speed limitation being the loading effects of the load capacitance. Because of this speed and ...

Page 5

... Thermal pad and pin #4, VNEG must be connected externally. INB OUTA IND OUTC MD1813 Output OUTB OUTG OUTD NEG NEG H ...

Page 6

... Dimensions marked with (*) are non-JEDEC dimensions. The value listed is for reference only. Drawings not to scale. (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) Doc.# DSFP-MD1813 NR051408 θ ...

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