音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

MPXY8020A_03 Datasheet

  • MPXY8020A_03

  • Freescale Semiconductor, Inc [Tire Pressure Monitoring Sens...

  • FREESCALE

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

MOTOROLA
Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MPXY8020A/D
Tire Pressure Monitoring Sensor
Temperature Compensated and
Calibrated, Fully Integrated,
Digital Output
GENERAL DESCRIPTION
The Motorola MPXY8020A is an 8鈥損in tire monitoring sensor which is
comprised of a variable capacitance pressure sensing element, a temperature
sensing element, and an interface circuit (with a wake鈥搖p feature) all on a
single chip. It is housed in a Super鈥揝mall Outline Package (SSOP), which
includes a media protection filter. Specifically designed for the low power
consumption requirements of tire pressure monitoring systems, it can combine
with a Motorola remote keyless entry (RKE) system to facilitate a low鈥揷ost
highly integrated system.
Detailed Description
The block diagram of the MPXY8020A is shown in Figure 1. The pressure
sensor is a capacitive transducer constructed using surface micromachining,
the temperature sensor is constructed using a diffused resistor, and the
interface circuit is integrated onto the same die as the sensors using a standard
silicon CMOS process.
The conditioning of the pressure signal begins with a capacitance to voltage
conversion (C to V) followed by a switched capacitor amplifier. This amplifier
has adjustable offset and gain trimming. The offset and gain are factory
calibrated, with calibration values stored in the EEPROM trim register. This
amplifier also has temperature compensation circuits for both sensitivity and
offset, which also are factory鈥揳djusted using the EEPROM trim register.
The pressure is monitored by a voltage comparator, which compares the
measured value against an 8鈥揵it threshold adjusted by a serial input. By
adjusting the threshold and monitoring the state of the OUT pin the external
device can check whether a low鈥損ressure threshold has been crossed, or
perform up to 8鈥揵it A/D conversions.
The temperature is measured by a diffused resistor with a positive
temperature coefficient driven by a current source, thereby creating a voltage.
The room temperature value of this voltage is factory鈥揷alibrated using the
EEPROM trim register. A two鈥揷hannel multiplexer can route either the
pressure or temperature signal to a sampling capacitor that is monitored by a
voltage comparator with variable threshold adjust, providing a digital output for
temperature.
An internal low frequency, low power 5.4 kHz oscillator with a 14鈥搒tage
divider provides a periodic pulse to the OUT pin (divide by 16384 for 3
seconds). This pulse can be used to wake up an external MCU to begin an
interface with the device. An additional 10鈥搒tage divider will provide a pulse
every 52 minutes which can be used to reset an external MCU.
The power consumption can be controlled by several operational modes
selected by external pins.
MPXY8020A
TIRE PRESSURE MONITORING
SENSOR
OPTIMIZED FOR 250 kPa 鈥?450 kPa
Freescale Semiconductor, Inc...
SUPER SMALL OUTLINE PACKAGE
CASE 1352
ORDERING INFORMATION
Shipped in Rails Shipped in Tape & Reel
MPXY8020A6U
MPXY8020A6T1
REV 1.0
Motorola Sensor Device Data
漏
Motorola, Inc. 2003
For More Information On This Product,
Go to: www.freescale.com
1

MPXY8020A_03相關(guān)型號(hào)PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號(hào)推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！