MAS6501 Datasheet, PDF (1/16 Pages) Micro Analog systems – 16-Bit Analog-to-Digital Converter

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product under development. Micro Analog
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changes without notice.
DA6501.001
27 October 2008
MAS6501
16-Bit Analog-to-Digital Converter
• Standby Current Consumption
0.1 µA
• Low Supply Current
• Low Power Consumption
• Resolution 16 Bits
• Ratiometric ∆Σ ADC
• ENOB 14 Bits
• Serial Data Output (I²C bus)
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
range of 282 mV_PP its resolution is 14 bits.
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 I²C bus is used for
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
• 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):
325 mV_PP , 98 mV_PP
• 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 I²C Interface
APPLICATIONS
• Battery Powered Systems
• Low Frequency Measurement Applications
• Pressure and Temperature Measurement
• Current/Power Consumption Critical Systems
• Industrial and Process Control Applications in
Noisy Environments
I²C is a registered trademark of Philips Inc.
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