MCP3424 Microchip Technology, MCP3424 Datasheet
MCP3424
Manufacturer Part Number
MCP3424
Description
Multi-Channel Analog-to-Digital Converter
Manufacturer
Microchip Technology
Datasheet
1.MCP3424.pdf
(58 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP3424-E/ST
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MCP3424E
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
MCP3424EV
Manufacturer:
Microchip Technology
Quantity:
135
Features
• 18-bit ΔΣ ADC with Differential Inputs:
• Differential Input Full Scale Range: -V
• Self Calibration of Internal Offset and Gain per
• On-Board Voltage Reference (V
• On-Board Programmable Gain Amplifier (PGA):
• INL: 10 ppm of Full Scale Range
• Programmable Data Rate Options:
• One-Shot or Continuous Conversion Options
• Low Current Consumption:
• On-Board Oscillator
• I
• Single Supply Operation: 2.7V to 5.5V
• Extended Temperature Range: -40°C to +125°C
Typical Applications
• Portable Instrumentation and Consumer Goods
• Temperature Sensing with RTD, Thermistor, and
• Bridge Sensing for Pressure, Strain, and Force
• Weigh Scales
• Battery Fuel Gauges
• Factory Automation Equipment
© 2009 Microchip Technology Inc.
- 2 channels: MCP3422 and MCP3423
- 4 channels: MCP3424
+V
Each Conversion
- Accuracy: 2.048V ± 0.05%
- Drift: 15 ppm/°C
- Gains of 1, 2, 4 or 8
- 3.75 SPS (18 bits)
- 15 SPS (16 bits)
- 60 SPS (14 bits)
- 240 SPS (12 bits)
- 135 µA typical
- 36 µA typical
- Standard, Fast and High Speed Modes
- User configurable two external address pins
Thermocouple
2
C
18-Bit, Multi-Channel ΔΣ Analog-to-Digital Converter with
(V
(V
for MCP3423 and MCP3424
REF
™
DD
DD
Interface:
= 3V, Continuous Conversion)
= 3V, One-Shot Conversion with 1 SPS)
I
2
C™ Interface and On-Board Reference
REF
):
REF
to
MCP3422/3/4
Description
The MCP3422, MCP3423 and MCP3424 devices
(MCP3422/3/4) are the low noise and high accuracy
18-Bit delta-sigma analog-to-digital (ΔΣ A/D) converter
family members of the MCP342X series from Microchip
Technology Inc. These devices can convert analog
inputs to digital codes with up to 18 bits of resolution.
The on-board 2.048V reference voltage enables an
input range of
range = 4.096V/PGA).
These devices can output analog-to-digital conversion
results at rates of 3.75, 15, 60, or 240 samples per
second
configuration bit settings using the two-wire I
interface.
calibrates offset and gain errors automatically. This
provides accurate conversion results from conversion
to conversion over variations in temperature and power
supply fluctuation.
The user can select the PGA gain of x1, x2, x4, or x8
before the analog-to-digital conversion takes place.
This allows the MCP3422/3/4 devices to convert a very
weak input signal with high resolution.
The MCP3422/3/4 devices have two conversion
modes: (a) One-Shot Conversion mode and (b)
Continuous Conversion mode. In One-Shot conversion
mode, the device performs a single conversion and
enters a low current standby mode automatically until it
receives another conversion command. This reduces
current consumption greatly during idle periods. In
Continuous conversion mode, the conversion takes
place continuously at the set conversion speed. The
device updates its output buffer with the most recent
conversion data.
The devices operate from a single 2.7V to 5.5V power
supply and have a two-wire I
interface for a standard (100 kHz), fast (400 kHz), or
high-speed (3.4 MHz) mode.
The I
are selected by using two external I
selection pins (Adr0 and Adr1). The user can configure
the device to one of eight available addresses by
connecting these two address selection pins to V
V
programmed at the factory during production.
SS
or float. The I
2
C address bits for the MCP3423 and MCP3424
depending
During
2
±
C address bits of the MCP3422 are
2.048V differentially (full scale
each
on
conversion,
the
2
C compatible serial
user
www.DataSheet4U.com
DS22088C-page 1
2
the
controllable
C address
2
C serial
device
DD
,
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