IL1815

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Functional Description

Designed IC is an integrated circuit (IC) of the

amplifier for sensors with different conductance.

IL1815 – is an IC of adaptive amplifier

increasing analog signal from the sensor and

transmitting a strobe of pulses from IC output

into electrical circuit of motor engine control

device. The amplifier ensures one short output

pulse leading edge of which coincides with

negative half-wave, crossing zero of input

analog signal produced by alternating magnetic

field of inductive sensor coil.

Functions

IC is purposed for application in automotive electronics in injection controller block as

well as in engine control system for:

• crankshaft position (condition) control;

• Switching when crossing zero;

• engine rotation speed control;

• tachometer (rotation speed measurement);

IC IL1815 is analog to microcircuit of the third integration scale and comprises 131 elements.

The circuit is implemented in 14-pin DIP-package of MS-001AA (IL1815N) type and in 14-pin SO-

package of MS-012AB (IL1815D) type.

Connection of loading of 1 kOhm to IC output (to pin 10) is tolerable.

Features

• Adaptive hysteresis

• One-polar power supply mode

• Influence of «ground» on input

• Precise choice of the initial ignition moment

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• Operation in the supply voltage range of 2,5 V up to 12 V

• control of input (pin 3) by signal coming into external resistor with amplitude from 75 mV up to

120V.

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Compatibility with CMOS - logic