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See Technical Specifications

TPIC8101DWR

Vibration and Engine Knock Sensor Interface

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TPIC8101DWR
Datasheet:

TPIC8101DWR Datasheet (PDF)
Series:

Automotive, AEC-Q100
Programmable:

Not Verified
Type:

Sensor Interface
Input Type:

Serial
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TPIC8101DWR General Description

The TPIC8101 is a dual-channel signal processing IC 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 analog signal, passed through an output buffer, or be read directly by the SPI.

This analog buffered output may be interfaced to an A/D converter and read by the microprocessor. The digital output may be directly interfaced to the microprocessor.

The data from the A/D enables the system to analyze the amount of retard timing for the next spark ignition timing cycle. With the microprocessor closed-loop system, advancing and retarding the spark timing optimizes the load/RPM conditions for a particular engine (data stored in RAM).

Key Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C
  Ambient Operating Temperature Range
- Device HBM Classification Level 3A
- Device CDM Classification Level C6
Dual-Channel Knock Sensor Interface
Programmable Input Frequency Prescaler
(OSCIN)
Serial Interface With Microprocessor (SPI)
Programmable Gain
Programmable Band-Pass Filter Center Frequency
External Clock Frequencies up to 24 MHz
- 4, 5, 6, 8, 10, 12, 16, 20, and 24 MHz
Programmable Integrator Time Constants
Operating Temperature Range –40°C to 125°C

Specifications

Category	Integrated Circuits (ICs)InterfaceSensor and Detector Interfaces	Series	Automotive, AEC-Q100
Programmable	Not Verified	Type	Sensor Interface
Input Type	Serial	Output Type	Serial
Current - Supply	20 mA	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount	Base Product Number	TPIC8101

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Ratings and Reviews

L**e 07/11/2023

Item purchased 23/01/2020 and received 27/04/2020 (delay due to Chinese new year and Covid19, but it was shipped right after the new year holiday).Seller was quick to reply when I asked for more 30 days of buyer protection.Items packaged in bubble wrap envelope. No damage. As described. I don't know if they are original, but I measured around 680 uF (tipically, slightly higher) for all capacitors using a UT139C multimeter. ESR was not measured. Still haven't used them.

L**n 10/26/2021

Received despite nothing

N**o 09/28/2021

I received the parcel. Packed in a normal package-puffy. Delivery was paid, but sent quickly, 16 days to perm (for me a record time). In the work i will check, i will add a review.

J**n 06/21/2020

Delivery speed and quality is excellent.