MCP3302-I/ST Microchip Technology, MCP3302-I/ST Datasheet

MCP3302-I/ST

Manufacturer Part Number

MCP3302-I/ST

Description

13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface

Manufacturer

Microchip Technology

Datasheet

1.MCP3302-IST.pdf (36 pages)

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Features

• Full Differential Inputs

• MCP3302: 2 Differential or 4 Single ended Inputs

• MCP3304: 4 Differential or 8 Single ended Inputs

• ±1 LSB max DNL

• ±1 LSB max INL (MCP3302/04-B)

• ±2 LSB max INL (MCP3302/04-C)

• Single supply operation: 2.7V to 5.5V

• 100 ksps sampling rate with 5V supply voltage

• 50 ksps sampling rate with 2.7V supply voltage

• 50 nA typical standby current, 1 µA max

• 450 µA max active current at 5V

• Industrial temp range: -40°C to +85°C

• 14 and 16-pin PDIP, SOIC, and TSSOP packages

• MXDEV

Applications

• Remote Sensors

• Battery Operated Systems

• Transducer Interface

Description

The Microchip Technology Inc. MCP3302/04 13-bit A/D

converters feature full differential inputs and low power

consumption in a small package that is ideal for battery

powered systems and remote data acquisition applica-

tions. The MCP3302 is programmable to provide two

differential input pairs or four single ended inputs. The

MCP3304 is programmable and provides four differen-

tial input pairs or eight single ended inputs.

Incorporating a successive approximation architecture

with on-board sample and hold circuitry, these 13-bit

A/D converters are specified to have ±1 LSB Differen-

tial Nonlinearity (DNL), and ±1 LSB Integral Nonlinear-

ity (INL) for B-grade and ±2 LSB for C-grade devices.

The industry-standard SPI™ serial interface enables

13-bit A/D converter capability to be added to any PIC-

micro

The MCP3302/04 devices feature low current design

that permits operation with typical standby and active

currents of only 50 nA and 300 µA, respectively. The

devices operate over a broad voltage range of 2.7V to

5.5V and are capable of conversion rates of up to

100 ksps. The reference voltage can be varied from

400 mV to 5V, yielding input-referred resolution

between 98 µV and 1.22 mV.

2001 Microchip Technology Inc.

microcontroller.

13-Bit Differential Input, Low Power A/D Converter

Evaluation kit available

with SPI™ Serial Interface

The MCP3302 is available in 14-pin PDIP, 150 mil

SOIC, and TSSOP packages. The MCP3304 is avail-

able in 16-pin PDIP and 150 mil SOIC packages. The

full differential inputs of these devices enable a wide

variety of signals to be used in applications such as

remote data acquisition, portable instrumentation, and

battery operated applications.

Package Types

Functional Block Diagram

MCP3302/04

PDIP, SOIC, TSSOP

PDIP, SOIC

CH7*

CH0

CH1

* Channels 5-7 available on MCP3304 Only

Channel

Input

Mux

Sample

Circuits

& Hold

DGND

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

CH0

CH1

CH2

CH3

CS/SHDN

Control Logic

REF

Comparator

CDAC

CLK

AGND

CLK

CS/SHDN

DGND

AGND

CLK

CS/SHDN

REF

OUT

DS21697A-page 1

13-Bit SAR

Shift

GND

OUT

GND

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