上海中霍电子电器有限公司特约经销:allegro,honeywell,ake,infineon,melexis,sanken,jrc,
fairchild,st,sanyo,toshiba各名厂霍尔元件.
霍尔齿轮传感器,霍尔电流传感器,节气门位置传感器,变速箱速度和方向检测,abs速度检测,
凸轮轴和曲轴位置检测等汽车专用传感器及电机驱动IC专卖,是一家汽车电子元件商.
本公司经营范围广，配套供货能力强 , 货源十分充足，各种电子元器件应有尽有，
具有相对优势，可降低客户的采购成本。
上海中霍电子竭诚为各界精英服务,欢迎来电垂询.
主营产品或服务： 霍尔元件;霍尔电流传感器;霍尔齿轮传感器;abs速度检测;
变速箱速度和方向检测;节气门位置传感器;凸轮轴和曲轴位置传感器;等汽车专用传感器;电机驱动ic;
主营行业： 电脑IC 驱动ic 温度传感器 闪灯IC
企业类型： 有限责任公司 经营模式： 经销
注册资本： 人民币 100 万 公司注册地： cn 上海 上海
公司成立时间： 2005 年 法定代表人/负责人： 吴权
主要客户： 及经销商 主要经营地点： 上海市黄浦区北京东路668号2d33室
主要市场： 大陆 港澳台地区 东南亚 经营品牌： allegro,infineon,melexis,ake
质量控制： 第三方
1product description
the kp216k1409 is a miniaturized analog manifold air pressure sensor
ic based on a capacitive principle. it is surface micromachined with a
monolithic integrated signal conditioning circuit implemented in bicmos
technology.
the sensor converts a pressure into an analog output signal. the
calibrated transfer function converts a pressure of 15 kpa to 115 kpa into
a voltage range of 0.5 v to 4.5 v.
the chip is packaged in a “green” smd housing. the sensor has been
primarily developed for measuring manifold air pressure, but can also be
used in other application fields. the high accuracy and the high sensitivity
of the device makes it a perfect fit for advanced automotive applications
as well as in industrial and consumer applications.
1.1features
following features are supported by the kp216k1409:
• high precision pressure sensing (± 1.0 kpa)
• ratiometric analog output
• large temperature range (-40 °c to 140 °c)
• broken wire detection
• clamping
• “green” 8 pin smd housing
• automotive qualified
1.2target applications
the kp216k1409 is defined for use in following target applications:
• automotive applications (manifold air pressure measurement)
• industrial control
• consumer applications
• medical applications
• weather stations
• altimeters
2functional description
the pressure is detected by an array of capacitive surface micromachined sensor cells. the sensor cell output is
amplified, temperature compensated and linearized to obtain an output voltage that is proportional to the applied
pressure.
the transfer function for linearization is computed in the digital part of the sensor using a third order polynomial
calculation. the transfer function is created from the following parameters:
• minimum and maximum rated pressure
• voltage level at minimum and maximum rated pressure
• clamping levels
the output is analog and ratiometric with respect to the supply voltage.
all parameters needed for the complete calibration algorithm — such as offset, gain, temperature coefficients of
offset and gain, and linearization parameters — are determined after assembly. the parameters are stored in an
integrated e²prom. the e²prom content is protected with forward error correction (a one bit error is detected
and corrected, errors of more than one bit are detected and the output signal is switched to ground potential).
clamping
the output voltage is limited internally to two clamping threshold levels. based on this feature, the open bond
detection (obd) is simplified and improved.
open bond detection
the open bond detection, in conjunction with the clamping levels, eases the implementation of error and
malfunction detection strategies (e.g. for on-board diagnosis requirements). the microcontroller can sample the
output of the sensor and compare it with programmed overvoltage and undervoltage limits. when the sensor’s
output voltage exceeds those limits, a broken wire condition is identified.
when the chip is not powered properly, the jfet transistors of the broken wire detection stage are selfconducting.
for example, if the gnd connection is interrupted, the output is drawn strongly to vdd. similarly, if
the vdd connection is broken, the output is drawn to gnd.