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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The TPIC8101DW is a Knock Sensor Interface for detection of premature detonation in combustion engine. The two sensor channels are selectable through the SPI bus. The knock sensor typically provides an electrical signal to the amplifier inputs. The sensed signal is processed through a programmable band-pass filter to extract the frequency of interest (engine knock or ping signals). The band-pass filter eliminates any engine background noise associated with combustion. The engine background noise is typically low in amplitude compared to the predetonation noise. The detected signal is full-wave rectified and integrated by use of the INT/HOLD signal. The digital output from the integration stage is either converted to an analogue signal, passed through an output buffer or be read directly by the SPI. This analogue buffered output may be interfaced to an A/D converter and read by the microprocessor.
Dual-channel knock sensor interface
Programmable input frequency prescaler (OSCIN)
Serial interface with microprocessor (SPI)
Programmable gain
Programmable band-pass filter centre frequency
External clock frequencies up to 24MHz (4, 5, 6, 8, 10, 12, 16, 20 and 24MHz)
Programmable integrator time constants
Green product and no Sb/Br
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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TPIC8101DW Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	20 Pin
Case/Package	SOIC-20
Supply Voltage (DC)	-300 mV (min)
Supply Current	20 mA
Number of Positions	20 Position
Input Current	2 mA
Power Dissipation	100 mW
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	5.25 V
Input Voltage	0.05V ~ 5.2V
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Weight	0.0082113832172 kg
Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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