LPS27HHW pressure sensor Datasheet

LPS27HHW Datasheet, PDF, Equivalent


Part Number

LPS27HHW

Description

MEMS pressure sensor

Manufacture

STMicroelectronics

Total Page 30 Pages
Datasheet
Download LPS27HHW Datasheet


LPS27HHW
LPS27HHW
MEMS pressure sensor: 260-1260 hPa absolute digital output
barometer with water-resistant package
Datasheet - production data
Features
Pressure sensor with water-resistant package
Potting gel & grounded metal cap
260 to 1260 hPa absolute pressure range
Current consumption down to 4 μA
Absolute pressure accuracy: 0.5 hPa
Low pressure sensor noise: 0.7 Pa
Embedded temperature compensation
24-bit pressure data output
ODR from 1 Hz to 200 Hz
SPI, I²C or MIPI I3CSM interfaces
Embedded FIFO
Interrupt functions: Data-Ready, FIFO flags,
pressure thresholds
Supply voltage: 1.7 to 3.6 V
ECOPACK lead-free compliant
Description
The LPS27HHW is an ultra-compact
piezoresistive absolute pressure sensor which
functions as a digital output barometer. The
device comprises a sensing element and an IC
interface which communicates through I²C, MIPI
I3CSM or SPI from the sensing element to the
application.
The sensing element, which detects absolute
pressure, consists of a suspended membrane
manufactured using a dedicated process
developed by ST.
The LPS27HHW is available in a ceramic LGA
package with metal lid. It is guaranteed to operate
over a temperature range extending from -40 °C
to +85 °C. The package is holed to allow external
pressure to reach the sensing element. Gel inside
the IC protects the electrical components from
water and the metal cap is grounded electrically
for better ESD robustness.
Table 1. Device summary
Order code
Temp. range
[°C]
Package
Packing
LPS27HHWTR
-40 to +85°C
CCLGA-10L
Tape
and reel
LPS27HHW
Tray
Applications
Altimeters and barometers for portable devices
GPS applications
Weather station equipment
Sport watches
e-cigarettes
Water depth monitoring
Gas metering
Product label
July 2019
This is information on a product in full production.
DocID032730 Rev 1
1/60
www.st.com

LPS27HHW
Contents
Contents
LPS27HHW
1 Block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Communication interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3.1 SPI - serial peripheral interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3.2 I²C - inter-IC control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Device structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Interpreting pressure readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6 Interpreting temperature readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1 Bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 Continuous (Dynamic-Stream) mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.4 Bypass-to-FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5 Bypass-to-Continuous (Dynamic-Stream) mode . . . . . . . . . . . . . . . . . . . 23
5.6 Continuous (Dynamic-Stream)-to-FIFO mode . . . . . . . . . . . . . . . . . . . . . 24
5.7 Retrieving data from FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7 Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2/60 DocID032730 Rev 1


Features LPS27HHW MEMS pressure sensor: 260-1260 hPa absolute digital output barometer with water-resistant package Datasheet - production data Features  Pressur e sensor with water-resistant package Potting gel & grounded metal cap  260 to 1260 hPa absolute pressure rang e  Current consumption down to 4 μA  Absolute pressure accuracy: 0.5 hP a  Low pressure sensor noise: 0.7 Pa  Embedded temperature compensation  24-bit pressure data output  ODR from 1 Hz to 200 Hz  SPI, I²C or M IPI I3CSM interfaces  Embedded FIFO  Interrupt functions: Data-Ready, FI FO flags, pressure thresholds  Suppl y voltage: 1.7 to 3.6 V  ECOPACK lea d-free compliant Description The LPS27 HHW is an ultra-compact piezoresistive absolute pressure sensor which function s as a digital output barometer. The de vice comprises a sensing element and an IC interface which communicates throug h I²C, MIPI I3CSM or SPI from the sens ing element to the application. The sensing element, which detects absolute pressure, consists.
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