HIP9011_06 Datasheet, PDF (1/11 Pages) Intersil Corporation – Engine Knock Signal Processor

®
Data Sheet
January 6, 2006
HIP9011
FN4367.2
Engine Knock Signal Processor
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 filter
processes the signal from either of the sensor inputs. The
bandpass filter can be selected to optimize the extraction
the engine knock or ping signals from the engine
background noise. Further single processing is obtained by
full wave rectification of the filtered signal and applying it to
an integrator whose output voltage level is proportional to
the knock signal amplitude. The chip is under
microprocessor control via a SPI interface bus.
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE
(^oC)
PKG.
PACKAGE DWG. #
HIP9011AB HIP9011AB -40 to 125 20 Ld SOIC M20.3
HIP9011ABZ HIP9011ABZ -40 to 125 20 Ld SOIC M20.3
(See Note)
(Pb-free)
Add “T” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Simplified Block Diagram
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
• Programmable Frequency Divider
• External Clock Frequencies up to 24MHz
- 4, 5, 6, 8, 10, 12, 16, 20, and 24MHz
• Operating Temperature Range -40^oC to 125^oC
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Engine Knock Detector Processor
• Analog Signal Processing Where Controllable Filter
Characteristics are Required
CH0FB
CH0IN
-
CH0NI +
CH1FB
CH1IN
-
CH1NI +
PROGRAMMABLE
GAIN
STAGE
2- 0.111
64 STEPS
POWER SUPPLY
AND
BIAS CIRCUITS
VMID V_DD GND
PROGRAMMABLE
BANDPASS
FILTER
1-20kHz
64 STEPS
ACTIVE
FULL WAVE
RECTIFIER
PROGRAMMABLE
INTEGRATOR
40 - 600µs
32 STEPS
OUTPUT
DRIVER INTOUT
AND
SAMPLE
AND HOLD
TO SWITCHED
CAPACITOR
NETWORKS
REGISTERS
AND
STATE MACHINE
TEST
PROGRAMMABLE
DIVIDER
OSCIN
CLOCK OSCOUT
SPI
INTERFACE
SCK
CS
SI
SO
INT/HOLD
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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