ALD4302A datasheet(6/6 Pages) ALD | QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER

6 page

ALD4302/ALD4302

Advanced Linear Devices

TIME DELAY GENERATOR

Design & Operating Notes:

1. As each output sources up to 10mA in the output high state, the output stage of a wired-OR low output circuit must be able to sink this current and still provide

desired output voltage levels. For TTL output levels, this consideration limits the number to a maximum of three ALD4302 outputs wired-OR together.

2. In order to minimize stray oscillation, all unused inputs must be tied to ground.

3. 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.

4. 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.

TYPICAL APPLICATIONS

PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER

RF4

1/4 ALD4302

RF3

RF2

V+

RF1

1/4 ALD4302

VIN

V+

VREF

+12V

P- Channel VP 02

Power MOSFET

2A Source

2A Sink

N - Channel VN 01

Power MOSFET

+12V

10K

40K

10K

VIN

1/4 ALD4302

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.

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