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MCP3550T-60 Datasheet(PDF) 1 Page - Microchip Technology

Part # MCP3550T-60
Description  Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3550T-60 Datasheet(HTML) 1 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS21950E-page 1
MCP3550/1/3
Features
• 22-bit ADC in Small 8-pin MSOP Package with
Automatic Internal Offset and Gain Calibration
• Low-Output Noise of 2.5 µVRMS with Effective
Resolution of 21.9 bits (MCP3550/1)
• 3 µV Typical Offset Error
• 2 ppm Typical Full Scale Error
• 6 ppm Maximum INL Error
• Total Unadjusted Error Less Than 10 ppm
• No Digital Filter Settling Time, Single-Command
Conversions through 3-wire SPI Interface
• Ultra-Low Conversion Current (MCP3550/1):
- 100 µA typical (VDD = 2.7V)
- 120 µA typical (VDD = 5.0V)
• Differential Input with VSS to VDD Common Mode
Range
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range:
- -40°C to +125°C
Applications
• Weigh Scales
• Direct Temperature Measurement
• 6-digit DVMs
• Instrumentation
• Data Acquisition
• Strain Gauge Measurement
Block Diagram
Description
The Microchip Technology Inc. MCP3550/1/3 devices
are 2.7V to 5.5V low-power, 22-bit Delta-Sigma
Analog-to-Digital Converters
(ADCs). The devices offer
output noise as low as 2.5 µVRMS, with a total
unadjusted error of 10 ppm. The family exhibits 6 ppm
Integral Non-Linearity (INL) error, 3 µV offset error and
less than 2 ppm full scale error. The MCP3550/1/3
devices provide high accuracy and low noise
performance
for
applications
where
sensor
measurements (such as pressure, temperature and
humidity) are performed. With the internal oscillator
and high oversampling rate, minimal external
components
are
required
for
high-accuracy
applications.
This product line has fully differential analog inputs,
making it compatible with a wide variety of sensor,
industrial control or process control applications.
The MCP3550/1/3 devices operate from -40°C to
+125°C and are available in the space-saving 8-pin
MSOP and SOIC packages.
Package Types:
VSS
VIN+
VIN-
SCK
VDD
SDO
CS
Internal
VREF
POR
Oscillator
3rd-Order
DS ADC
Modulator
w/ Internal
Calibration
VDD
RDY
VIN
VIN+
MCP3550/1/3
VSS
CS
SDO/RDY
1
2
3
4
8
7
6
5 SCK
VDD
VREF
MSOP, SOIC
Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs


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