Datasheet > MS5540B

MS5540B

更新时间： 2024-11-11 03:48:23

品牌	Logo	应用领域
INTERSEMA		/
页数	文件大小	规格书
18页	370K
描述
MINIATURE BAROMETER MODULE

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数据手册

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MS5540B 数据手册

MS5540B (RoHS^*) MINIATURE BAROMETER MODULE

• 10 - 1100 mbar absolute pressure range

• 6 coefficients for software compensation stored

on-chip

• Piezoresistive silicon micromachined sensor

• Integrated miniature pressure sensor 6.2 x 6.4 mm

• 15 Bit ADC

• 3-wire serial interface

• 1 system clock line (32.768 kHz)

• Low voltage and low power consumption

• RoHS-compatible & Pb-free*

DESCRIPTION

The MS5540B is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADC-

Interface IC. It is a miniature version of the MS5534B barometer/altimeter module and provides a 16 Bit data

word from a pressure and temperature dependent voltage. MS5540B is a low power, low voltage device with

automatic power down (ON/OFF) switching. A 3-wire interface is used for all communications with a micro-

controller.

Compared to MS5534A the pressure range (measurement down to 10 mbar) has been improved. Other

improvements concern the ESD sensitivity, current consumption and converter accuracy. The MS5540B is fully

software compatible to the MS5534A and MS5534B. In addition, the MS5540B is from its outer dimensions

compatible to the MS54XX series of pressure sensors. The gel protection of the sensor provides a water

protection sufficient for 100 m waterproof watches without any additional protection.

FEATURES

APPLICATIONS

•

Resolution 0.1 mbar

Supply voltage 2.2 V to 3.6 V

Low supply current < 5 uA

Standby current < 0.1 uA

-40°C to +85°C operation temperature

No external components required

•

Mobile altimeter/barometer systems

Weather control systems

Adventure or multi-mode watches

GPS receivers

BLOCK DIAGRAM

VDD

MCLK

Input MUX

+IN

-IN

Digital

Interface

SENSOR

DIN

DOUT

SCLK

dig.

Filter

ADC

Memory

(PROM)

64 bits

Sensor

Interface IC

SGND

GND

Fig. 1: Block diagram 5540B.

^*The European RoHS directive 2002/95/EC (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment)

bans the use of lead, mercury, cadmium, hexavalent chromium and polybrominated biphenyls (PBB) or polybrominated diphenyl ethers

(PBDE).

DA5540B_007

September 25th, 2006

00005540767 ECN 865

12 3 4 5 6 7...18

中文翻译

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