DA6501.001

27 October 2008

1 (16)

MAS6501

16-Bit Analog-to-Digital Converter

•

Standby Current Consumption

0.1 µA

•

Low Supply Current

•

Low Power Consumption

•

Resolution 16 Bits

•

Ratiometric ∆

∆

∆

∆Σ

Σ

Σ

Σ

ADC

•

ENOB 14 Bits

•

Serial Data Output (I

DESCRIPTION

The

MAS6501

is

a

16

bit

Analog-to-Digital

Converter (ADC), which employs a delta-sigma (∆Σ)

conversion technique. With the linear input signal

The MAS6501 is designed especially to

meet the requirement for low power consumption,

thus making it an ideal choice for battery powered

systems. The MAS6501 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

1.6 µA (one pressure conversion in a second with

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

The MAS6501 has an on-chip second order

decimator filter to process the output of the second

order ∆Σ -modulator. The ADC also has two

selectable conversion ranges with two optional

offset levels.

A bi-directional 2-wire I

configuring

conversion

parameters,

starting

conversion and reading out the A/D conversion

result.

MAS6501 has one input channel suitable for

piezo resistive pressure sensor. In addition to

pressure measurement configuration the device can

be configured to temperature measurement.

FEATURES

APPLICATIONS

•

Low Standby Current Consumption 0.1 µA Typ

•

Low Supply Current: 0.2 µA..1.6 µA

•

Supply Voltage: 2.0 V…3.6 V

•

Ratiometric ∆Σ Conversion

•

Two Input Signal Ranges (VDD=2.35V):

•

Two Optional Offsets (VDD=2.35V):

123 mV, 33 mV

•

Over Sampling Ratio: 512, 256, 128, 64

•

Conversion Times 32.2 ms…2.5 ms

•

In Fast Mode: Over Sampling Ratio 64,

Conversion Time 2.5 ms, Resolution 10 Bits

•

Good Noise Performance due to ∆Σ

Architecture

•

2-Wire I

•

Battery Powered Systems

•

Low Frequency Measurement Applications

•

Pressure and Temperature Measurement

•

Current/Power Consumption Critical Systems

•

Industrial and Process Control Applications in

Noisy Environments

I

This is preliminary information on a new

product under development. Micro Analog

Systems Oy reserves the right to make any

changes without notice.