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MCP3901

Two-Channel Analog Front End

Microchip Technology 

MCP3901

SERIAL INTERFACE SPECIFICATIONS

Electrical Specifications: Unless otherwise indicated, all parameters apply: AVDD = 4.5 to 5.5V, DVDD = 2.7 to 5.5V,

-40°C < TA < +85°C, CLOAD = 30 pF

Parameters

Sym

Min

Typ

Max

Units

Conditions

Serial Clock Frequency

CS Setup Time

CS Hold Time

CS Disable Time

Data Setup Time

Data Hold Time

Serial Clock High Time

Serial Clock Low Time

Serial Clock Delay Time

Serial Clock Enable Time

Output Valid from SCK Low

Modulator Output Valid from AMCLK

High

fSCK

—

—

tCSS

25

50

tCSH

50

100

tCSD

50

tSU

5

10

tHD

10

20

tHI

20

50

tLO

20

50

tCLD

50

tCLE

50

tDO

—

tDOMDAT

—

—

20

MHz 4.5 ≤ DVDD ≤ 5.5

—

10

MHz 2.7 ≤ DVDD < 5.5

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD ≤ 5.5

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD < 5.5

—

—

ns

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD < 5.5

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD < 5.5

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD < 5.5

—

—

ns 4.5 ≤ DVDD ≤ 5.5

—

—

ns 2.7 ≤ DVDD < 5.5

—

—

ns

—

—

ns

—

50

ns 2.7 ≤ DVDD < 5.5

— 1/2 * AMCLK s

Output Hold Time

Output Disable Time

Reset Pulse Width (RESET)

Data Transfer Time to DR (data ready)

Data Ready Pulse Low Time

Schmitt Trigger High-Level Input Voltage

Schmitt Trigger Low-Level Input Voltage

Hysteresis of Schmitt Trigger Inputs

(all digital inputs)

tHO

tDIS

tMCLR

tDODR

tDRP

VIH1

VIL1

VHYS

0

—

—

100

—

—

.7 DVDD

-0.3

300

—

—

—

—

—

1/DMCLK

—

—

—

—

25

50

—

50

—

DVDD + 1

0.2 DVDD

—

ns (Note 1)

ns 4.5 ≤ DVDD ≤ 5.5

ns 2.7 ≤ DVDD < 5.5 (Note 1)

ns 2.7 ≤ DVDD < 5.5

ns 2.7 ≤ DVDD < 5.5

µs 2.7 ≤ DVDD < 5.5

V

V

mV

Low-Level Output Voltage, SDO Pin

VOL

—

—

Low-level output voltage, DR and

MDAT Pins

High-level output voltage, SDO pin

VOL

—

—

VOH DVDD – 0.5

—

High-level output voltage, DR and

MDAT pins

Input leakage current

VOH DVDD – 0.5

—

ILI

—

—

Output leakage current

ILO

—

—

Internal capacitance (all inputs and

CINT

—

—

outputs)

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

0.4

V SDO pin only,

IOL = +2.0 mA, VDD = 5.0V

0.4

V DR and MDAT pins only,

IOL = +800 mA, VDD = 5.0V

—

V SDO pin only,

IOH = -2.0 mA, VDD = 5.0V

—

V DR and MDAT pins only,

IOH = -800 µA, VDD = 5.0V

±1

µA CS = DVDD,

VIN = DGND or DVDD

±1

µA CS = DVDD,

VOUT = DGND or DVDD

7

pF TA = 25°C,

SCK = 1.0 MHz,

DVDD = 5.0V (Note 1)

DS22192D-page 6

© 2011 Microchip Technology Inc.

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