MCP3021 datasheet(1/26 Pages) MICROCHIP

Nome de Peças	MCP3021

Descrição Electrónicos	Low Power 10-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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 2003 Microchip Technology Inc.

DS21805A-page 1

M

MCP3021

Features

• 10-bit resolution

• ±1 LSB DNL, ±1 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 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:

- 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. MCP3021 is a succes-

sive approximation A/D converter (ADC) with 10-bit

resolution. Available in the SOT-23 package, this

device provides one single-ended input with very low

power consumption. Based on an advanced CMOS

technology, the MCP3021 provides a low maximum

conversion current and standby current of 250 µA and

1 µA, respectively. Low current consumption, com-

bined with the small SOT-23 package, make this

device ideal for battery-powered and remote data

acquisition applications.

Communication to the MCP3021 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 MCP3021 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 (DNL) and ±1 LSB integral non-

linearity (INL), maximum.

Functional Block Diagram

5-Pin SOT-23A

SCL

AIN

1

2

3

5

SDA

VSS

VDD

4

Comparator

10-Bit SAR

DAC

AIN

VSS

VDD

SCL

SDA

Clock

Control Logic

–

+

Sample

and

Hold

I2C™

Interface

Low Power 10-Bit A/D Converter With I2C™ Interface

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