MCP4921T-EP datasheet(6/40 Pages) MICROCHIP

部件名	MCP4921T-EP

功能描述	12-Bit DAC with SPI??Interface

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制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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6 / 40 page

MCP4921/4922

DS21897A-page 6

 2004 Microchip Technology Inc.

AC CHARACTERISTICS (SPI TIMING SPECIFICATIONS)

FIGURE 1-1:

SPI™ Input Timing.

Electrical Specifications: Unless otherwise indicated, VDD= 2.7V – 5.5V, TA= -40 to +125°C.

Typical values are at +25°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Schmitt Trigger High-Level

Input Voltage (All digital input

pins)

VIH

0.7 VDD

——

V

Schmitt Trigger Low-Level

Input Voltage

(All digital input pins)

VIL

——

0.2 VD

D

V

Hysteresis of Schmitt Trigger

Inputs

VHYS

—0.05 VDD

—

Input Leakage Current

ILEAKAGE

-1

—

1

µASHDN = LDAC = CS = SDI =

SCK + VREF = VDD or AVSS

Digital Pin Capacitance

(All inputs/outputs)

CIN,

COUT

—10

—

pF

VDD = 5.0V, TA = +25°C,

fcLK = 1 MHz (Note 1)

Clock Frequency

FCLK

——

20

MHz

TA = +25°C (Note 1)

Clock High Time

tHI

15

—

ns

Note 1

Clock Low Time

tLO

15

—

ns

Note 1

CS Fall to First Rising CLK

Edge

tCSSR

40

—

ns

Applies only when CS falls with

CLK high. (Note 1)

Data Input Setup Time

tSU

15

—

ns

Note 1

Data Input Hold Time

tHD

10

—

ns

Note 1

SCK Rise to CS Rise Hold

Time

tCHS

15

—

ns

Note 1

CS High Time

tCSH

15

—

ns

Note 1

LDAC Pulse Width

tLD

100

—

ns

Note 1

LDAC Setup Time

tLS

40

—

ns

Note 1

SCK Idle Time before CS Fall

tIDLE

40

—

ns

Note 1

Note 1:

By design and characterization, not production tested.

CS

SCK

SI

LDAC

tCSSR

tHD

tSU

tLO

tCSH

tCHS

LSB in

MSB in

tIDLE

Mode 1,1

Mode 0,0

tHI

tLD

tLS

类似零件编号 - MCP4921T-EP

制造商	部件名	数据表	功能描述
Microchip Technology	MCP4921T-E/MC	3Mb / 50P	8/10/12-Bit Voltage Output Digital-to-Analog Converter with SPI Interface 2010
	MCP4921T-E/MS	3Mb / 42P	12-Bit DAC with SPI??Interface 2007
	MCP4921T-E/MS	3Mb / 50P	8/10/12-Bit Voltage Output Digital-to-Analog Converter with SPI Interface 2010
	MCP4921T-E/P	3Mb / 42P	12-Bit DAC with SPI??Interface 2007
	MCP4921T-E/P	3Mb / 50P	8/10/12-Bit Voltage Output Digital-to-Analog Converter with SPI Interface 2010

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