MCP3221 datasheet(1/26 Pages) MICROCHIP

Nome de Peças	MCP3221

Descrição Electrónicos	Low Power 12-Bit A/D Converter With I2C Interface

PDF	26 Pages

Scroll/Zoom	100%

Fabricante Electrônico	MICROCHIP [Microchip Technology]

Página de início	http://www.microchip.com

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1 / 26 page

 2003 Microchip Technology Inc.

DS21732B-page 1

M

MCP3221

Features

• 12-bit resolution

• ±1 LSB DNL, ±2 LSB INL max.

• 250 µA max conversion current

• 5 nA typical standby current, 1 µA max.

• I2C™ compatible serial interface

- 100 kHz I2C Standard Mode

- 400 kHz I2C Fast Mode

• Up to 8 devices on a single 2-Wire bus

• 22.3 ksps in I2C Fast Mode

• Single-ended analog input channel

• On-chip sample and hold

• On-chip conversion clock

• Single-supply specified operation: 2.7V to 5.5V

• Temperature range:

- Industrial: -40°C to +85°C

- Extended: -40°C to +125°C

• Small SOT-23 package

Applications

• Data Logging

• Multi-zone Monitoring

• Hand-Held Portable Applications

• Battery-Powered Test Equipment

• Remote or Isolated Data Acquisition

Package Type

Description

The Microchip Technology Inc. MCP3221 is a succes-

sive approximation A/D converter with 12-bit resolu-

tion. Available in the SOT-23 package, this device

provides one single-ended input with very low power

consumption. Based on an advanced CMOS technol-

ogy, the MCP3221 provides a low maximum conver-

sion current and standby current of 250 µA and 1 µA,

respectively. Low current consumption, combined with

the small SOT-23 package, make this device ideal for

battery-powered

and

remote

data

acquisition

applications.

Communication to the MCP3221 is performed using a

2-wire, I2C compatible interface. Standard (100 kHz)

and Fast (400 kHz) I2C modes are available with the

device. An on-chip conversion clock enables indepen-

dent timing for the I2C and conversion clocks. The

device is also addressable, allowing up to eight devices

on a single 2-wire bus.

The MCP3221 runs on a single supply voltage that

operates over a broad range of 2.7V to 5.5V. This

device also provides excellent linearity of ±1 LSB differ-

ential non-linearity and ±2 LSB integral non-linearity,

maximum.

Functional Block Diagram

5-Pin SOT-23A

SCL

AIN

1

2

3

5

SDA

VSS

VDD

4

Comparator

Sample

and

Hold

12-bit SAR

DAC

I2C™ Interface

AIN

VSS

VDD

SCL

SDA

Clock

Control Logic

–

+

Low Power 12-Bit A/D Converter With I2C™ Interface

Nº de peça semelhante - MCP3221

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Microchip Technology	MCP3021	561Kb / 26P	Low Power 10-Bit A/D Converter With I2C??Interface 11/29/12
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