MCP3008-I 查看數據表（PDF） - Microchip Technology

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MCP3008-I

2.7V 4-Channel/8-Channel 10-Bit A/D Converters with SPI Serial Interface

Microchip Technology 

MCP3004/3008

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VREF = 5V,

TA = -40°C to +85°C, fSAMPLE = 200 ksps and fCLK = 18*fSAMPLE. Unless otherwise noted, typical values apply for

VDD = 5V, TA = +25°C.

Parameter

Sym

Min

Typ

Max Units

Conditions

Power Requirements

Operating Voltage

VDD

2.7

—

5.5

V

Operating Current

IDD

—

425

550

µA VDD = VREF = 5V,

225

DOUT unloaded

VDD = VREF = 2.7V,

DOUT unloaded

Standby Current

IDDS

—

0.005

2

µA CS = VDD = 5.0V

Note 1: This parameter is established by characterization and not 100% tested.

2: See graphs that relate linearity performance to VREF levels.

3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity

performance, especially at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock

Speed”, “Maintaining Minimum Clock Speed”, for more information.

TEMPERATURE CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VDD = +2.7V to +5.5V, VSS = GND.

Parameters

Sym

Min

Typ Max Units

Temperature Ranges

Specified Temperature Range

Operating Temperature Range

Storage Temperature Range

Thermal Package Resistances

Thermal Resistance, 14L-PDIP

Thermal Resistance, 14L-SOIC

Thermal Resistance, 14L-TSSOP

Thermal Resistance, 16L-PDIP

Thermal Resistance, 16L-SOIC

TA

-40

—

+85 °C

TA

-40

—

+85 °C

TA

-65

— +150 °C

θJA

—

70

— °C/W

θJA

—

108

— °C/W

θJA

—

100

— °C/W

θJA

—

70

— °C/W

θJA

—

90

— °C/W

Conditions

TCSH

CS

CLK

DIN

DOUT

TSUCS

TSU THD

MSB IN

THI TLO

TEN

TDO

NULL BIT

TR

MSB OUT

TF

TDIS

LSB

FIGURE 1-1:

Serial Interface Timing.

© 2008 Microchip Technology Inc.

DS21295D-page 5

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