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MD1810
Initial Release
High Speed Quad MOSFET Driver
Features
6ns rise and fall time with 1000pF load 2A peak output source/sink current 1.2V to 5V input CMOS compatible 5V to 12V total supply voltage Smart Logic threshold Low jitter design Four matched channels Outputs can swing below ground Output is high impedence when disabled Low inductance package High-performance thermally-enhanced
General Description
The Supertex MD1810 is a high-speed quad MOSFET driver. It is designed to drive high voltage P-and N-channel MOSFETs for medical ultrasound imaging applications. The MD1810 can also be used for ultrasound metal flaw detection, nondestructive evaluation test, piezoelectric transducer drive, clock drive, and PIN diode drive. The MD1810 has four inputs which individually control four outputs. It also has an output enable (OE) pin. When OE is low, all of the outputs will be in a high impedance state regardless of their logic input control. When OE is high, the MD1810 sets the threshold logic transition to (VOE+VGND)/2. This ensures the transition to always be at half the amplitude of the logic input signal. This allows the device to have inherent propagation delay matching regardless of the logic input amplitude. The output stage of the MD1810 has separate power connections enabling the output signal L and H levels to be chosen independently from the VDD and VSS supply voltages. As an example, the input logic levels may be 0 and 1.8 volts, the control logic may be powered by +5 and –5 volts, and the output L and H levels may be varied anywhere over the range of –5 to +5 volts. The output stage is capable of peak currents of up to ±2 amps, 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
Typical Application Circuit
+100V +12V +12V 1.0μF 0.47μF 0.47μF VDD OE INA OUTA VH 10nF
10nF
-100V 1.0μF +10V
3.3V CMOS Logic Inputs
INB
OUTB
Supertex TC6320TG
INC
OUTC
1.0μF
IND
OUTD
10nF
GND VSS VL 10nF Supertex MD1810 Supertex TC6320TG 1.0μF -10V
NR090105
1
Ordering Information
DEVICE MD1810 θJA Package Option 16-Lead 4x4x0.9 QFN MD1810K6-G 45°C/W (1oz. 4-layer 3x4inch PCB) Product Marking Information 1
ST
MD1810
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings*
VDD-VSS, Logic Supply Voltage VH, Output High Supply Voltage VL, Output Low Supply Voltage Vss, Low Side Supply Voltage Logic Input Levels Maximum Junction Temperature Storage Temperature Soldering Temperature Package Power Dissipation -0.5V to +13.5V VL-0.5V to VDD+0.5V VSS-0.5V to VH+0.5V -7V to +0.5V VSS-0.5V to VSS+7V +125°C -65°C to 150°C 235°C 2.2W
Line
Device Number Year, Week Code, Lot Number
1810 YWLL
2ND Line
Example: 5A88 means Lot #88 of first or second week in 2005
Pin 1
1810 YWLL
Top View
*Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground.
DC Electrical Characteristics (V
Sym.
VDD-VSS VSS VH VL IDDQ IHQ IDD IH VIH VIL IIH IIL VIH VIL RIN CIN
H
= VDD = 12V, VL = VSS = GND = 0V, VOE = 3.3V, TJ = 25°C)
Parameter
Logic supply voltage Low side supply voltage Output high supply voltage Output low supply voltage VDD quiescent current VH quiescent current VDD average current VH average current Input logic voltage high Input logic voltage low Input logic current high Input logic current low OE Input logic voltage high OE Input logic voltage low Input logic impedance to GND Logic input capacitance
H
Min.
4.5 -5.5 VSS+2 VSS
Typ.
Max.
13 0 VDD VDD-2
Units
V V V V mA µA mA mA
Conditions
0.8 10 7.0 18 VOE-0.3 0 5 0.3 1.0 1.0 1.2 0 12 20 5 5 0.3 30 10
No input transitions, OE = 1 One channel on at 5.0Mhz, No load
V V µA µA V V KΩ pF For logic input OE For logic inputs INA, INB, INC, and IND
Outputs (V
Sym.
RSINK RSOURCE ISINK ISOURCE
= VDD = 12V, VL = VSS = GND = 0V, VOE = 3.3V, TJ = 25°C)
Parameter
Output sink resistance Output source resistance Peak output sink current Peak output source current
Min.
Typ.
Max.
12.5 12.5
Units
Ω Ω A A
Conditions
ISINK = 50mA ISOURCE = 50mA
2.0 2.0
NR090105
2
AC Electrical Characteristics (V
Sym.
tirf tPLH tPHL tPOE tr tf l tr - tf l l tPLH-tPHL l ∆tdm
MD1810
H
= VDD = 12V, VL = VSS = GND = 0V, VOE = 3.3V, TJ = 25°C)
Parameter
Input or OE rise & fall time Propagation delay when output is from low to high Propagation delay when output is from high to low Propagation delay OE to output Output rise time Output fall time Rise and fall time matching Propagation low to high and high to low matching Propagation delay matching
Min.
Typ.
Max.
10
Units
ns ns ns ns ns ns ns
Conditions
Logic input edge speed requirement
7.