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MCP3421A0T-E/OT

Description
1-Channel Single ADC Delta-Sigma 3.75sps 18-bit Serial Automotive 6-Pin SOT-23 T/R
File Size905KB,30 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MCP3421A0T-E/OT Overview

1-Channel Single ADC Delta-Sigma 3.75sps 18-bit Serial Automotive 6-Pin SOT-23 T/R

MCP3421A0T-E/OT Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.33.00.01
Converter TypeGeneral Purpose
ArchitectureDelta-Sigma
Resolution18bit
Number of ADCs1
Number of Input Channels1
Sampling Rate3.75sps
Digital Interface TypeSerial (2-Wire, I2C)
Input TypeVoltage
Input Signal TypeDifferential|Single-Ended
Voltage ReferenceInternal
Polarity of Input VoltageBipolar
Voltage Supply SourceSingle
Input Voltage±2.048V
Minimum Single Supply Voltage (V)2.7
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)5.5
Integral Nonlinearity Error35ppm of FSR
Full Scale Error0.35%FSR
No Missing Codes (bit)18
Sample and HoldNo
Single-Ended InputYes
Digital Supply SupportNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTape and Reel
Supplier PackageSOT-23
Pin Count6
Standard Package NameSOT-23
MountingSurface Mount
Package Height1.15
Package Length2.9
Package Width1.6
PCB changed6
Lead ShapeGull-wing
MCP3421
18-Bit Analog-to-Digital Converter
with I
2
C Interface and On-Board Reference
Features
• 18-bit
ΔΣ
ADC in a SOT-23-6 package
• Differential input operation
• Self calibration of Internal Offset and Gain per
each conversion
• On-board Voltage Reference:
- Accuracy: 2.048V ± 0.05%
- Drift: 5 ppm/°C
• On-board Programmable Gain Amplifier (PGA):
- Gains of 1,2,4 or 8
• On-board Oscillator
• INL: 10 ppm of FSR (FSR = 4.096V/PGA)
• Programmable Data Rate Options:
- 3.75 SPS (18 bits)
- 15 SPS (16 bits)
- 60 SPS (14 bits)
- 240 SPS (12 bits)
• One-Shot or Continuous Conversion Options
• Low current consumption:
- 145 µA typical
(V
DD
= 3V, Continuous Conversion)
- 39 µA typical
(V
DD
= 3V, One-Shot Conversion with 1 SPS)
• Supports I
2
C Serial Interface:
- Standard, Fast and High Speed Modes
• Single Supply Operation: 2.7V to 5.5V
• Extended Temperature Range: -40°C to 125°C
Description
The MCP3421 is a single channel low-noise, high
accuracy
ΔΣ
A/D converter with differential inputs and
up to 18 bits of resolution in a small SOT-23-6 package.
The on-board precision 2.048V reference voltage
enables an input range of ±2.048V differentially
(Δ voltage = 4.096V). The device uses a two-wire I
2
C
compatible serial interface and operates from a single
2.7V to 5.5V power supply.
The MCP3421 device performs conversion at rates of
3.75, 15, 60, or 240 samples per second (SPS)
depending on the user controllable configuration bit
settings using the two-wire I
2
C serial interface. This
device has an on-board programmable gain amplifier
(PGA). The user can select the PGA gain of x1, x2, x4,
or x8 before the analog-to-digital conversion takes
place. This allows the MCP3421 device to convert a
smaller input signal with high resolution. The device
has two conversion modes: (a) Continuous mode and
(b) One-Shot mode. In One-Shot mode, the device
enters a low current standby mode automatically after
one conversion. This reduces current consumption
greatly during idle periods.
The MCP3421 device can be used for various high
accuracy analog-to-digital data conversion applications
where design simplicity, low power, and small footprint
are major considerations.
Block Diagram
V
SS
V
DD
Typical Applications
• Portable Instrumentation
• Weigh Scales and Fuel Gauges
• Temperature Sensing with RTD, Thermistor, and
Thermocouple
• Bridge Sensing for Pressure, Strain, and Force.
Voltage Reference
(2.048V)
Gain = 1, 2, 4, or 8
V
IN
+
PGA
ΔΣ
ADC
Converter
Clock
Oscillator
V
REF
Package Types
SOT-23-6
Top View
V
IN
-
1
2
3
6
5
4
V
IN
+
V
SS
SCL
V
IN
-
V
DD
SDA
I
2
C Interface
SCL
SDA
©
2006 Microchip Technology Inc.
DS22003B-page 1

MCP3421A0T-E/OT Related Products

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Description 1-Channel Single ADC Delta-Sigma 3.75sps 18-bit Serial Automotive 6-Pin SOT-23 T/R 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6 1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6
Is it lead-free? - Lead free Lead free Lead free Lead free Lead free Lead free Lead free
Is it Rohs certified? - conform to conform to conform to conform to conform to conform to conform to
Maker - Microchip Microchip Microchip Microchip Microchip Microchip Microchip
Parts packaging code - SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23
package instruction - LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37 LSSOP, TSOP5/6,.11,37
Contacts - 6 6 6 6 6 6 6
Reach Compliance Code - compli compli compli compli compli compli compli
ECCN code - 3A001.A.5.A.5 3A001.A.5.A.5 3A001.A.5.A.5 3A001.A.5.A.5 3A001.A.5.A.5 3A001.A.5.A.5 3A001.A.5.A.5
Maximum analog input voltage - 2.048 V 2.048 V 2.048 V 2.048 V 2.048 V 2.048 V 2.048 V
Minimum analog input voltage - -2.048 V -2.048 V -2.048 V -2.048 V -2.048 V -2.048 V -2.048 V
Converter type - ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code - R-PDSO-G6 R-PDSO-G6 R-PDSO-G6 R-PDSO-G6 R-PDSO-G6 R-PDSO-G6 R-PDSO-G6
JESD-609 code - e3 e3 e3 e3 e3 e3 e3
length - 2.95 mm 2.95 mm 2.95 mm 2.95 mm 2.95 mm 2.95 mm 2.95 mm
Maximum linear error (EL) - 0.0035% 0.0035% 0.0035% 0.0035% 0.0035% 0.0035% 0.0035%
Humidity sensitivity level - 1 1 1 1 1 1 1
Number of analog input channels - 1 1 1 1 1 1 1
Number of digits - 18 18 18 18 18 18 18
Number of functions - 1 1 1 1 1 1 1
Number of terminals - 6 6 6 6 6 6 6
Maximum operating temperature - 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C
Minimum operating temperature - -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
Output bit code - 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY 2\'S COMPLEMENT BINARY
Output format - SERIAL SERIAL SERIAL SERIAL SERIAL SERIAL SERIAL
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - LSSOP LSSOP LSSOP LSSOP LSSOP LSSOP LSSOP
Encapsulate equivalent code - TSOP5/6,.11,37 TSOP5/6,.11,37 TSOP5/6,.11,37 TSOP5/6,.11,37 TSOP5/6,.11,37 TSOP5/6,.11,37 TSOP5/6,.11,37
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) - 260 260 260 260 260 260 260
power supply - 5 V 5 V 5 V 5 V 5 V 5 V 5 V
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Sampling rate - 0.00024 MHz 0.00024 MHz 0.00024 MHz 0.00024 MHz 0.00024 MHz 0.00024 MHz 0.00024 MHz
Maximum seat height - 1.45 mm 1.45 mm 1.45 mm 1.45 mm 1.45 mm 1.45 mm 1.45 mm
Nominal supply voltage - 5 V 5 V 5 V 5 V 5 V 5 V 5 V
surface mount - YES YES YES YES YES YES YES
Temperature level - AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE AUTOMOTIVE
Terminal surface - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch - 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm
Terminal location - DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - 40 40 40 40 40 40 40
width - 1.63 mm 1.63 mm 1.63 mm 1.63 mm 1.63 mm 1.63 mm 1.63 mm
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