MCP4021 datasheet(5/64 Pages) MICROCHIP

5 / 64 page

DS21945E-page 5

MCP4021/2/3/4

Digital Inputs/Outputs (CS, U/D)

Input High Voltage

VIH

0.7 VDD

——

Input Low Voltage

VIL

——

0.3 VDD

High-Voltage Input Entry Voltage

VIHH

8.5

—

12.5(6)

Threshold for WiperLock™

Technology

High-Voltage Input Exit Voltage

VIHH

——

VDD+0.8(6)

CS Pull-up/Pull-down Resistance

RCS

—16

—

VDD = 5.5V, VCS = 3V

CS Weak Pull-up/Pull-down Current

IPU

—

170

—

µA

VDD = 5.5V, VCS = 3V

Input Leakage Current

IIL

-1

—

µA

VIN = VDD

CS and U/D Pin Capacitance

CIN, COUT

—10

—

fC = 1 MHz

RAM (Wiper) Value

Value Range

—

3Fh

hex

EEPROM

Endurance

—

Cycles

EEPROM Range

—

3Fh

hex

Initial Factory Setting

1Fh

hex

WiperLock Technology = Off

Power Requirements

Power Supply Sensitivity

(MCP4021 and MCP4023 only)

PSS

—

0.0015

0.0035

%/%

VDD = 4.5V to 5.5V, VA = 4.5V,

Code = 1Fh

—

0.0015

0.0035

%/%

VDD = 2.7V to 4.5V, VA = 2.7V,

Code = 1Fh

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all parameters apply across the specified operating ranges.

TA = -40°C to +125°C, 2.1 kΩ, 5kΩ, 10 kΩ and 50 kΩ devices. Typical specifications represent values for VDD = 5.5V, VSS = 0V,

TA = +25°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

Resistance is defined as the resistance between terminal A to terminal B.

INL and DNL are measured at VW with VA = VDD and VB = VSS. (-202 devices VA = 4V).

MCP4021/23 only, test conditions are: IW = 1.9 mA, code = 00h.

MCP4022/24 only, test conditions are:

Resistor terminals A, W and B’s polarity with respect to each other is not restricted.

This specification by design

Non-linearity is affected by wiper resistance (RW), which changes significantly over voltage and temperature. See

Section 6.0 “Resistor” for additional information.

The MCP4021 is externally connected to match the configurations of the MCP4022 and MCP4024, and then tested.

Device

Resistance

Current at Voltage

Comments

5.5V

2.7V

2.1 k

2.25 mA

1.1 mA

MCP4022 includes VWZSE

MCP4024 includes VWFSE

1.4 mA

450 µA

10 k

450 µA

210 µA

50 k

90 µA

40 µA

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