FN4367 Rev 2.00

Page 1 of 11

January 6, 2006

FN4367

Rev 2.00

January 6, 2006

HIP9011

Engine Knock Signal Processor

DATASHEET

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.

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

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Engine Knock Detector Processor

• Analog Signal Processing Where Controllable Filter

Characteristics are Required

Simplified Block Diagram

Ordering Information

PART

NUMBER

PART

MARKING

TEMP.

RANGE

PACKAGE

PKG.

DWG. #

HIP9011AB

HIP9011AB

-40 to 125 20 Ld SOIC

M20.3

HIP9011ABZ

(See Note)

HIP9011ABZ

-40 to 125 20 Ld SOIC

(Pb-free)

M20.3

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.

INTOUT

PROGRAMMABLE

2

RECTIFIER

PROGRAMMABLE

INTEGRATOR

40

32 STEPS

OUTPUT

DRIVER

PROGRAMMABLE

BANDPASS

FILTER

1

64 STEPS

REGISTERS

AND

STATE MACHINE

STAGE

TO SWITCHED

CAPACITOR

NETWORKS

SCK

CS

SI

SO

INT/HOLD

TEST

OSCIN

OSCOUT

VMID

CH0FB

CH0IN

CH1FB

CH1IN

POWER SUPPLY

AND

BIAS CIRCUITS

DIVIDER

PROGRAMMABLE

CH0NI

CH1NI

SAMPLE

AND HOLD

AND

ACTIVE

FULL WAVE

64 STEPS

GAIN

-

+

-

+

CLOCK

SPI

INTERFACE