Datasheet > MCP3426A3T-E/MS

MCP3426A3T-E/MS

更新时间： 2024-12-02 09:57:11

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
56页	944K
描述
IC ADC 16BIT 2CH 15SPS 8MSOP

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数据手册

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MCP3426A3T-E/MS 数据手册

MCP3426/7/8

16-Bit, Multi-Channel ΔΣ Analog-to-Digital Converter with

I²C™ Interface and On-Board Reference

Features

Description

• 16-bit ΔΣ ADC with Differential Inputs:

- 2 channels: MCP3426 and MCP3427

- 4 channels: MCP3428

The MCP3426, MCP3427 and MCP3428 devices

(MCP3426/7/8) are the low noise and high accuracy

16 Bit Delta-Sigma Analog-to-Digital (ΔΣ A/D) Con-

verter family members of the MCP342X series from

Microchip Technology Inc. These devices can convert

analog inputs to digital codes with up to 16 bits of reso-

lution.

• Differential Input Full Scale Range: -V_REFto

+V_REF

• Self Calibration of Internal Offset and Gain per

Each Conversion

The MCP3426 and MCP3427 devices have two

differential input channels and the MCP3428 has four

differential input channels. All electrical properties of

these three devices are the same except the

differences in the number of input channels and I²C

address bit selection options.

• On-Board Voltage Reference (V_REF):

- Accuracy: 2.048V ± 0.05%

- Drift: 15 ppm/°C

• On-Board Programmable Gain Amplifier (PGA):

- Gains of 1,2, 4 or 8

These devices can output analog-to-digital conversion

results at rates of 15 (16-bit mode), 60 (14-bit mode), or

240 (12-bit mode) samples per second depending on

the user controllable configuration bit settings using the

two-wire I²C serial interface. During each conversion,

the device calibrates offset and gain errors

automatically. This provides accurate conversion

results from conversion to conversion over variations in

temperature and power supply fluctuation.

• INL: 10 ppm of Full Scale Range

• Programmable Data Rate Options:

- 15 SPS (16 bits)

- 60 SPS (14 bits)

- 240 SPS (12 bits)

• One-Shot or Continuous Conversion Options

• Low Current Consumption (V_DD= 3V):

- Continuous Conversion: 135 µA typical

The device has an on-board 2.048V reference voltage,

which enables an input range of ± 2.048V differentially

(full scale range = 4.096/PGA).

- One-Shot Conversion with 1 SPS:

- 9 µA typical for 16 bit mode

- 2.25 µA typical for 14 bit mode

- 0.56 µA typical for 12 bit mode

The user can select the gain of the on-board

programmable gain amplifier (PGA) using the

configuration register bits (gain of x1, x2, x4, or x8).

This allows the MCP3426/7/8 devices to convert a very

weak input signal with high resolution.

• On-Board Oscillator

• I²C^™Interface:

- Standard, Fast and High Speed Modes

- User configurable two external address

selection pins for MCP3427 and MCP3428

The MCP3426/7/8 devices have two conversion

modes: (a) One-Shot Conversion mode and

(b) Continuous Conversion mode. In the One-Shot

conversion mode, the device performs a single

• Single Supply Operation: 2.7V to 5.5V

• Extended Temperature Range: -40°C to +125°C

conversion and enters

low current standby

Typical Applications

(shutdown) 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 configured conversion speed. The

device updates its output buffer with the most recent

conversion data.

• Portable Instrumentation and Consumer Goods

• Temperature Sensing with RTD, Thermistor, and

Thermocouple

• Bridge Sensing for Pressure, Strain, and Force

• Weigh Scales and Battery Fuel Gauges

• Factory Automation Equipment

The devices operate from a single 2.7V to 5.5V power

supply and have a two-wire I²C compatible serial

interface for a standard (100 kHz), fast (400 kHz), or

high-speed (3.4 MHz) mode.

DS22226A-page 1

12 3 4 5 6 7...56

中文翻译

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与MCP3426A3T-E/MS相关器件

型号	品牌	获取价格	描述	数据表
MCP3426A4-E/MS	MICROCHIP	获取价格	IC ADC 16BIT 15SPS 2CH A4 8MSOP
MCP3426A4T-E/SN	MICROCHIP	获取价格	IC ADC 16BIT 2CH 15SPS 8SOIC
MCP3426A5-E/MC	MICROCHIP	获取价格	IC ADC 16BIT 15SPS 2CH A5 8DFN
MCP3426A5-E/MS	MICROCHIP	获取价格	IC ADC 16BIT 15SPS 2CH A5 8MSOP
MCP3426A6-E/MC	MICROCHIP	获取价格	IC ADC 16BIT 15SPS 2CH A6 8DFN
MCP3426A6-E/SN	MICROCHIP	获取价格	IC ADC 16BIT 15SPS 2CH A6 8SOIC
MCP3426A6T-E/MC	MICROCHIP	获取价格	IC ADC 16BIT 2CH 15SPS 8DFN
MCP3426A7T-E/MC	MICROCHIP	获取价格	IC ADC 16BIT 2CH 15SPS 8DFN
MCP3426A7T-E/MS	MICROCHIP	获取价格	IC ADC 16BIT 2CH 15SPS 8MSOP
MCP3426-E/MS	MICROCHIP	获取价格	2-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO8, PLASTIC, MSOP-8

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