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ALD4303 Datasheet(PDF) 6 Page - Advanced Linear Devices

Part No. ALD4303
Description  QUAD PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
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Maker  ALD [Advanced Linear Devices]
Homepage  http://www.aldinc.com
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ALD4303 Datasheet(HTML) 6 Page - Advanced Linear Devices

   
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ALD4303A/ALD4303
Advanced Linear Devices
RM
TYPICAL APPLICATIONS
Design & Operating Notes:
1. In order to minimize stray oscillation, all unused inputs must be tied to ground.
2. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room
temperature. These currents are a function of ambient temperature, and would have to be considered in applications where very high source
impedance or high accuracy are involved.
3. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be
necessary to drive the intended load. However, as the circuit normally operates close to ambient temperature due to its very low power
consumption, thermal effects caused by large output current transients must be considered in certain applications.
PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER
This circuit eliminates crossover current in the
complementary power transistors. The outputs can
be used to source and sink different loads or tied
together to provide push-pull drive of the same load.
R
≥ 50 KΩ
TIME DELAY GENERATOR
+
+
+12V
+12V
+12V
P- Channel VP 02
Power MOSFET
2A Source
2A Sink
N - Channel VN 01
Power MOSFET
+12V
10K
40K
10K
V1
V2
VIN
1/2 ALD4303
R
R
+
RF4
1/4 ALD4303
1/4 ALD4303
RF3
RF2
V+
RF1
+
1/4 ALD4303
+
1/4 ALD4303
RT
CT
+
VIN
V+
VREF
RELAY 1
RELAY 3
RELAY 2
RELAY 1 turns off followed by
RELAY 2 and then RELAY 3 with
fixed sequence and time delays
selectrd by ratios RF1, RF2 , RF3
and RF4.


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