MCP3421A7T-E/OT datasheet, PDF

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MCP3421A7T-E/OT: Description1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6; CategoryAnalog mixed-signal IC converter; File Size905KB，30 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MCP3421A7T-E/OT Overview

1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6

MCP3421A7T-E/OT Parametric

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

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MCP3421

18-Bit Analog-to-Digital Converter

with I

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

= 3V, Continuous Conversion)

- 39 µA typical

= 3V, One-Shot Conversion with 1 SPS)

• Supports I

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

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

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

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

PGA

ΔΣ

ADC

Converter

Clock

Oscillator

REF

Package Types

SOT-23-6

Top View

SCL

SDA

C Interface

SCL

SDA

2006 Microchip Technology Inc.

DS22003B-page 1

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Description	1-CH 18-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO6	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
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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