HIP9010 Datasheet, PDF (1/12 Pages) Intersil Corporation – Engine Knock Signal Processor

Data Sheet
HIP9010
November 1998 File Number 3601.4
Engine Knock Signal Processor
The HIP9010 is used to provide a method of detecting
premature detonation or “Knock” in automotive engines.
A block diagram of this IC is shown in Figure 1. The chip
alternately selects one of the two sensors mounted on the
engine block. Two programmable bandpass filters process
the signal from both sensors, and divides the signal into two
channels. When the engine is not knocking, programmable
gain adjust stages are set to ensure that both the reference
channel and the knock channel contain similar energies.
This technique ensures that the detection system is
comparatively immune to changes in the engine background
noise level. When the engine is knocking, the energy in the
knock channel increases.
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
HIP9010AB
-40 to 125 20 Ld SOIC (W)
PKG.
NO.
M20.3
Features
• Two Sensor Inputs
• Microprocessor Programmable
• Accurate and Stable Filter Elements
• Digitally Programmable Gain
• Digitally Programmable Time Constants
• Digitally Programmable Filter Characteristics
• On-Chip Clock
• Operating Temperature Range -40^oC to 125^oC
Applications
• Engine Knock Detector Processor
• Analog Signal Processing where Controllable Filter
Characteristics are Required
Pinout
HIP9010
(SOIC)
TOP VIEW
V_{DD 1}
GND ₂
V_{MID 3}
INOUT ₄
NC ₅
NC 6
INT/HOLD 7
CS 8
OSCIN 9
OSCOUT 10
20 S0IN
19 S0FB
18 S1FB
17 S1IN
16 NC
15 NC
14 TEST
13 SCK
12 MOSI
11 MISO
4-1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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