HIP9011 - Engine Knock Signal Processor
PIN NUMBER DESIGNATION DESCRIPTION 1 VDD Five volt power input.
2 GND This pin is tied to ground.
3 VMID This pin is connected to the internal mid-supply generator and is brought out for bypassing by a 0.022F capacitor.
4 INTOUT Buffered output of the integrator.
Output signal is hel
DATASHEET HIP9011 Engine Knock Signal Processor FN4367 Rev 2.00 January 6, 2006 The HIP9011 is used to provide a method of detecting premature detonation often referred to as “Knock or Ping” in internal combustion engines.
The IC is shown in the Simplified Block Diagram.
The chip can select between one of two sensors, if needed for accurate monitoring or for “V” type engines.
Internal control via the SPI bus is fast enough to switch sensors between each firing cycle.
A programmable bandpass f
HIP9011 Features
* Two Sensor Inputs
* Microprocessor Programmable
* Accurate and Stable Filter Elements
* Digitally Programmable Gain
* Digitally Programmable Time Constants
* Digitally Programmable Filter Characteristics
* On-Chip Crystal Oscillator
