MAS6502 datasheet(1/20 Pages) MAS

部件名	MAS6502

功能描述	Piezoresistive Sensor

PDF	20 Pages

Scroll/Zoom	100%

制造商	MAS [Micro Analog systems]

网页	http://www.mas-oy.com

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1 / 20 page

DA6502.008

29 November 2012

1 (20)

MAS6502

Piezoresistive Sensor

Signal Interface IC

• Optimized for Piezoresistive

Pressure Sensors

• Very Low Power Consumption

• Ratiometric 16 Bit ∆

∆

∆Σ

Σ

Σ ADC

• Linearity 14 Bits

• Internal Clock Oscillator

• Serial Data Interface (I

2C

®

® Bus)

• 256 Bit EEPROM Memory

DESCRIPTION

MAS6502 is a 16 bit Analog-to-Digital Converter

(ADC),

which

employs

a

delta-sigma

( Σ)

conversion technique. With the linear input signal

range of 260 mVPP the linearity is 14 bits.

MAS6502 is designed especially to meet

the requirement for low power consumption, thus

making it an ideal choice for battery powered

systems. The MAS6502 is equipped with a standby

function, i.e. the ADC is in power down between

each conversion. By utilizing this and overall low

power consumption, current consumption values of

2.5 µA (one pressure conversion in a second with

full 14-bit accuracy) or less can be achieved.

MAS6502 has an on-chip second order

decimator filter to process the output of the second

order

Σ -modulator. The ADC also has four

selectable input signal ranges with one optional

offset level. An internal trimmed clock oscillator

provides a system clock signal (DCLK) eliminating

the need for an external clock signal.

A bi-directional I

2C

® bus compatible 2-wire

serial bus is used for configuring conversion

parameters, starting conversion and reading out the

A/D conversion result.

MAS6502 has one input channel suitable

for a piezoresistive pressure sensor. In addition to

pressure

measurement

the

device

can

be

configured also for temperature measurement.

The 256-bit EEPROM memory is available

for storing trimming and calibration data on chip.

FEATURES

APPLICATIONS

•

Low Standby Current Consumption 0.05 µA Typ

•

Very Low Supply Current: 0.4 µA…2.5 µA Typ

•

Supply Voltage: 2.0 V…3.6 V

•

Ratiometric Σ Conversion

•

Selectable Input Signal Ranges (VDD=2.35V):

325 mVPP, 220 mVPP, 150 mVPP, 100 mVPP

•

Selectable Optional Offset (VDD=2.35V):

33 mV

Selectable Sensor Resistance Values

5 kΩ, 4.5 kΩ, 4 kΩ, 3.4 kΩ

•

Over Sampling Ratio: 512, 256, 128, 64

•

Internal System Clock Signal 100 kHz

•

Conversion Times 0.8 ms…10.6 ms Typ

•

2-Wire Serial Data Interface (I

2C

® Bus)

•

256 Bit EEPROM Memory

•

Good Noise Performance due to Σ

Architecture

•

Calibrated Piezoresistive Pressure Modules

•

Temperature measurement

•

Battery Powered Systems

•

Low Frequency Measurement Applications

•

Current/Power Consumption Critical Systems

•

Industrial and Process Control Applications in

Noisy Environments

I

2C is a registered trademark of NXP.

类似零件编号 - MAS6502

制造商	部件名	数据表	功能描述
Micro Analog systems	MAS6502	39Kb / 3P	Writing data to the EEPROM
Micro Analog systems	MAS6502	39Kb / 3P	Writing data to the EEPROM

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