MCP3911 datasheet(6/72 Pages) MICROCHIP

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MCP3911

DS22286A-page 6

1.2

SERIAL INTERFACE CHARACTERISTICS

TABLE 1-2:

SERIAL DC CHARACTERISTICS TABLE

Electrical Specifications: Unless otherwise indicated, all parameters apply at DVDD = 2.7 to 3.6V, TA = -40°C to

+125°C, CLOAD = 30pF, applies to all digital I/O.

Sym

Characteristics

Min

Typ

Max

Units

Test Conditions

VIH

High-level Input voltage

0.7 DVDD

—

Schmitt Triggered

VIL

Low-level Input voltage

—

0.3 DVDD

Schmitt Triggered

ILI

Input leakage current

—

±1

µA

CS = DVDD, VIN = DGND TO

DVDD

ILO

Output leakage current

—

±1

µA

CS = DVDD, VOUT = DGND OR

DVDD

VHYS

Hysteresis of Schmitt Trig-

ger Inputs

—200

(Note 2), DVDD = 3.3V only

VOL

Low-level output

voltage

——

0.4

IOL = +2.1mA, DVDD = 3.3V

VOH

High-level output

voltage

DVDD -0.5

—

IOH = -2.1mA, DVDD = 3.3V

CINT

Internal capacitance

(all inputs and

outputs)

——

TA = 25°C, SCK = 1.0 MHz,

DVDD =3.3V (Note 1)

Note 1: This parameter is periodically sampled and not 100% tested.

2: This parameter is established by characterization and not production tested.

TABLE 1-3:

SERIAL AC CHARACTERISTICS TABLE

Electrical Specifications: Unless otherwise indicated, all parameters apply at DVDD = 2.7 to 3.6V, TA = -40°C to

+125°C, GAIN = 1, CLOAD = 30pF.

Sym

Characteristics

Min

Typ

Max

Units

Test Conditions

fSCK

Serial Clock frequency

—

MHz

CSS

CS setup time

—

CSH

CS hold time

—

CSD

CS disable time

—

tsu

Data setup time

—

Data hold time

—

Serial Clock high time

—

Serial Clock low time

—

CLD

Serial Clock delay time

—

CLE

Serial Clock enable time

—

Output valid from SCK low

—

DOMDAT

Modulator output valid from

AMCLK high

——

1/(2*AMCLK)

Output hold time

—

(Note 1)

DIS

Output disable time

—

(Note 1)

tMCLR

Reset Pulse Width (RESET)100

—

tDODR

Data Transfer Time to DR

(Data Ready)

—25

(Note 2)

Note 1: This parameter is periodically sampled and not 100% tested.

2: This parameter is established by characterization and not production tested.

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