Os motores de busca de Datasheet de Componentes eletrônicos |
|
MLX90809LXGEAD-000RE Folha de dados(PDF) 5 Page - Melexis Microelectronic Systems |
|
MLX90809LXGEAD-000RE Folha de dados(HTML) 5 Page - Melexis Microelectronic Systems |
5 / 11 page MLX90809 Relative Pressure Sensor Rev 002 Page 5 of 11 Data Sheet 390109080901 Oct/14 7 Detailed General Description The pressure sensing element consists of a square diaphragm realized in the silicon chip by backside etching. The diaphragm reacts to a pressure difference between the top and bottom side of the diaphragm. The internal strain increases, in particular at the border of the diaphragm. Here, the piezo-resistive elements have been implanted into the silicon diaphragm, which act as a transducer. The electronics front end amplifies the signal from the bridge, performs a coarse offset compensation and an ADC conversion. The DSP performs the compensations over temperature. Furthermore, the digital circuit provides some filtering, the possibility to linearize the pressure signal and also implements the clamping function. The analog back end consists of a 12 bit DAC and an output driver. This chip delivers an analog output proportional to the pressure or a SENT output compliant with SAE J2716 spec dated January 2010. A broken wire detection block allows actively driving the output to one of the rails in case of a broken supply or ground connection. Extensive protection of the supply lines allows the MLX90809 to handle extreme overvoltage conditions and is immune to severe external disturbances. Several diagnostic functions (over- voltage, under-voltage, overpressure, under pressure detections) have been implemented on the 90809 and can be enabled by programming EEPROM settings. Figure 2 describes MLX90809 block diagram. OPA ADC Temperature sensor Gain & Offset compensation 16 bits DSP Rom FW Ram EE PROM Pressure Linearization Gain & Offset temperature compensation Programmable filter Micro controller DAC Gain Analog Output 12 bits Slew rate control SENT Output Piezoresistive sensing element Overvoltage & reverse voltage protection Analog & Digital Regulator and POR Broken wire detection SENT driver Analog driver Ground Vext Diagnostic signals Diagnostics Logic Test M U X Figure 2: MLX90809 block diagram |
Nº de peça semelhante - MLX90809LXGEAD-000RE |
|
Descrição semelhante - MLX90809LXGEAD-000RE |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |