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ZMDIZSSC3170汽车传感器信号调理方案

发布时间:2020-07-21 18:17:08 阅读: 来源:栗子厂家

ZMDI公司的ZSSC3170是集成了LIN和PWM接口的汽车传感器信号调理器,最大模拟增益420,并具有扩展的失调补偿.器件和LIN指标1.3 / 2.0 / 2.1兼容,数据转换速率高达430Hz,电源电压7-18V,ADC分辨率13-14位,输出分辨率达12位,睡眠模式的电流消耗小于100uA.本文介绍了ZSSC3170主要特性, 方框图和多种应用电路.ZSSC3170: Automotive Sensor Signal Conditioner with LIN and PWM InterfaceThe ZSSC3170 is a CMOS integrated circuit for highly accurate amplification and sensor specific correction of bridge sensor signals. Featuring a maximum analog gain of 420, as well as extended offset compensation capabilities, the ZSSC3170 is adjustable to nearly all resistive bridge sensor gital compensation of offset, sensitivity, temperature drift, and nonlinearity is accomplished via a 16-bit RISC microcontroller. Conditioning coefficients are stored in an EEPROM certified for automotive asured values are provided by one of the digital LIN or PWM interfaces. Each interface can support end-of-line calibration using the sensor output. Noise sensitivity is greatly reduced because the calibration equipment and the ZSSC3170 are mated r quick and easy evaluation and support for calibrating prototypes, ZMDI offers the ZSSC3170 SSC Evaluation Kit, which includes evaluation hard-ware, SSOP20 samples, and SC3170主要特性:Complies with LIN specifications 1.3/2.0/2.1Configurable LIN publisher frame contentData conversion rate of up to 430Hz fully utilizes the maximum LIN channel capacity of 20kbit/sPWM high-side and low-side switches, support for LIN communication for end-of-line calibrationDigital compensation of offset, gain, temperature effects up to 2nd order, and nonlinearity up to 3rd order. Compensation of temperature sensor offset, gain, and nonlinearity up to 2nd ernal or external temperature referenceMedia temperature sensing by diode or RTDLoad dump protection of the LIN pin up to ±40VOperating temperature range: -40 to 125Â℃Extended operating temperature range: ≤150Â℃Accuracy±0.25% FSO @ -20 to 85Â℃±0.50% FSO @ -40 to 125Â℃±1.00% FSO @ -40 to 150Â℃3 EEPROM words available for optional use dataZSSC3170优势:Measurand and temperature signal available via one output pinCompatible with nearly all resistive bridge inputsNo external trimming components requiredSingle-pass calibration minimizes calibration costsEnd-of-line calibration using sensor outputOptimized for automotive environments with special protection circuitry, excellent electro-magnetic compatibility, and numerous diagnostic featuresZSSC3170物理特性:Supply voltage: 7 to 18VCurrent consumption in Sleep Mode: ≤ 100μA Input span: 1.8 to 267 mV/VADC resolution: 13 to 14 bitOutput resolution: up to 12-bPackage: SSOP20 or die

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