MCP4021 datasheet(3/64 Pages) MICROCHIP

3 / 64 page

DS21945E-page 3

MCP4021/2/3/4

Wiper Resistance (Note 3, Note 4)

—

125

5.5V

—

325

2.7V

Nominal Resistance Tempco

ΔR/ΔT

—

ppm/°C

TA = -20°C to +70°C

—

100

—

ppm/°C

TA = -40°C to +85°C

—

150

—

ppm/°C

TA = -40°C to +125°C

Ratiometeric Tempco

ΔVWA/ΔT

—

ppm/°C

MCP4021 and MCP4023 only,

code = 1Fh

Full-Scale Error

VWFSE

-0.5

-0.1

+0.5

LSb

Code 3Fh (MCP4021/23 only)

Zero-Scale Error

VWZSE

-0.5

+0.1

+0.5

LSb

Code 00h (MCP4021/23 only)

Monotonicity

Yes

Bits

Potentiometer Integral Non-linearity

INL

-0.5

±0.25

+0.5

LSb

MCP4021/23 only (Note 2)

Potentiometer Differential

Non-linearity

DNL

-0.5

±0.25

+0.5

LSb

MCP4021/23 only (Note 2)

Resistor Terminal Input Voltage

Range (Terminals A, B and W)

VA,VW,VB

Vss

—

VDD

Note 5, Note 6

Maximum current through A, W or B

——

2.5

Note 6

Leakage current into A, W or B

IWL

—

100

—

MCP4021 A = W = B = VSS

—

100

—

MCP4022/23 A = W = VSS

—

100

—

MCP4024 W = VSS

Capacitance (PA)CAW

—

f =1 MHz, code = 1Fh

Capacitance (Pw)CW

—

120

—

f =1 MHz, code = 1Fh

Capacitance (PB)CBW

—

f =1 MHz, code = 1Fh

Bandwidth -3 dB

—

MHz

-202

devices

Code = 1F,

output load = 30 pF

—

MHz

-502

devices

—

MHz

-103

devices

—

200

—

kHz

-503

devices

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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