TPIC8101
- 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
- Device Temperature Grade 1: –40°C to 125°C
- 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
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).
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | TPIC8101 Knock Sensor Interface 数据表 (Rev. C) | PDF | HTML | 2015年 3月 23日 | ||
EVM 用户指南 | TPIC8101 EVM User's Guide | 2015年 12月 18日 | ||||
技术文章 | Performance comparison between two automotive knock sensors | PDF | HTML | 2015年 6月 23日 | |||
应用手册 | TPIC8101 Knock Sensor Interface Technical Brief | 2009年 1月 9日 |
设计和开发
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TPIC8101EVM — TPIC8101 汽车类声震传感器评估模块
TPIC8101EVM 可轻松评估 TPIC8101 汽车爆震传感器接口 IC。 包含可快速对 TPIC8101 进行编程的软件,且所包含的 USB 接口板可提供将 TPIC8101 EVM 连接至爆震传感器或爆震传感仿真器的所有必要信号。
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TIDA-00152 — 汽车类声震传感器接口
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