Microchip MCP4022 Bedienungsanleitung

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 2006-2017 Microchip Technology Inc.DS20001945F-page 1

MCP4021/2/3/4

Features

•Nonvolatile Digital Potentiometer in SOT-23,

SOIC, MSOP and DFN Packages

•64 Taps: 63 Resistors with Taps to Terminal A and

Terminal B

•Simple Up/Down

(U/D) Protocol

•Power-on Recall of Saved Wiper Setting

•Resistance Values: 2.1k, 5k, 10k or 50k

•Low Tempco:

-Absolute (Rheostat): 50ppm (0°C to 70°C Typ.)

-Ratiometric (Potentiometer): 10ppm (Typ.)

•Low Wiper Resistance: 75 (Typ.)

•WiperLock™ Technology to Secure the wiper

setting in nonvolatile memory (EEPROM)

•High-Voltage Tolerant Digital Inputs: up to 12.5V

•Low-Power Operation: 1µA Max Static Current

•Wide Operating Voltage: 2.7V to 5.5V

•Extended Temperature Range: –40°C to +125°C

•Wide Bandwidth (-3 dB) Operation:

-4MHz (Typ.) for 2.1k Device

Description

The MCP4021/2/3/4 devices are nonvolatile, 6-bit

digital potentiometers that can be configured as either a

potentiometer or rheostat. The wiper setting is

controlled through a simple Up/Down

(U/D) serial

interface.

These device’s implement Microchip’s WiperLock

technology, which allows application-specific

calibration settings to be secured in the EEPROM

without requiring the use of an additional write-protect

pin.

Package Types

Block Diagram

Device Features

.

A

W

B

MCP4021

SOIC, MSOP, DFN

MCP4022

SOT-23-6

MCP4023

SOT-23-6

MCP4024

SOT-23-5

RheostatPotentiometer

Potentiometer

Rheostat

A

V

SS

W

1

2

3

4

8

7

6

5

V

DD

U/D

NC

B

CS

4

1

2

3

5

W

CS

V

DD

V

SS

U/D

4

1

2

3

6

A

CS

V

DD

V

SS

U/D

5

W

A

W

B

4

1

2

3

6

A

CS

V

DD

V

SS

U/D

5

W

A

W

W

A

B

B

V

DD

V

SS

U/D

W

B

(Resistor Array)

Wiper Register

CS

WiperLock

EEPROM and

A

2-Wire

Interface

and

Control

Logic

Power-Up

and

Brown-Out

Control

Technology

Device

Wiper

Configuration

Memory

Type

Resistance (typical)

# of

Steps

V

DD

Operating

Range

Control

Interface

WiperLock

Technology

Options (k)Wiper ()

MCP4021Potentiometer

(1)

EE2.1, 5.0, 10.0, 50.075642.7V - 5.5VU/DYes

MCP4022RheostatEE2.1, 5.0, 10.0, 50.075642.7V- 5.5VU/DYes

MCP4023PotentiometerEE2.1, 5.0, 10.0, 50.075642.7V - 5.5VU/D

Yes

MCP4024RheostatEE2.1, 5.0, 10.0, 50.075642.7V - 5.5VU/DYes

Note1:Floating either terminal (A or B) allows the device to be used in Rheostat mode.

Low-Cost NV Digital POT with WiperLock™ Technology

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