
	Microchip Technology Semiconductor Electronic Components Datasheet

MCP4442 Datasheet

7/8-Bit Quad I2C Digital POT

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MCP444X/446X

7/8-Bit Quad I2C Digital POT with

Nonvolatile Memory

Features

• Quad Resistor Network

• Potentiometer or Rheostat configuration options

• Resistor Network Resolution

- 7-bit: 128 Resistors (129 Taps)

- 8-bit: 256 Resistors (257 Taps)

• RAB Resistances options of:

- 5 kΩ

- 10 kΩ

- 50 kΩ

- 100 kΩ

• Zero Scale to Full Scale Wiper operation

• Low Wiper Resistance: 75 Ω (typical)

• Low Tempco:

- Absolute (Rheostat): 50 ppm typical

(0°C to 70°C)

- Ratiometric (Potentiometer): 15 ppm typical

• Nonvolatile Memory

- Automatic Recall of Saved Wiper Setting

- WiperLock™ Technology

- 5 General Purpose Memory Locations

• I2C Serial Interface

- 100 kHz, 400 kHz, and 3.4 MHz support

• Serial protocol allows:

- High-Speed Read/Write to wiper

- Read/Write to EEPROM

- Write Protect to be enabled/disable

- WiperLock to be enabled/disabled

• Resistor Network Terminal Disconnect Feature

via Terminal Control (TCON) Register

• Reset input pin

• Write Protect Feature:

- Hardware Write Protect (WP) Control pin

- Software Write Protect (WP) Configuration bit

• Brown-out reset protection (1.5V typical)

• Serial Interface Inactive current (2.5 uA typical)

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

• Supports Split Rail Applications

• Internal weak pull-up on all digital inputs

(except SCL and SDA)

• Wide Operating Voltage:

- 2.7V to 5.5V - Device Characteristics

Specified

- 1.8V to 5.5V - Device Operation

• Wide Bandwidth (-3 dB) Operation:

- 2 MHz (typical) for 5.0 kΩ device

• Extended temperature range (-40°C to +125°C)

• Package Types: 4x4 QFN-20, TSSOP-20 and

TSSOP-14

Package Types (Top View)

MCP44X1 Quad Potentiometers

P3A

P3W

P3B

HVC/A0

SCL

SDA

VSS

P1B

P1W

P1A

20 P2A

19 P2W

18 P2B

17 VDD

16 A1

15 RESET

14 WP

12 P0B

12 P0W

11 P0A

TSSOP

P3B 1 20 19 18 17 16 15 VDD

HVC/A0 2

14 A1

SCL 3

SDA 4

13 RESET

12 WP

VSS 5

11 P0B

6 7 8 9 10

4x4 QFN

MCP44X2 Quad Rheostat

P3W

P3B

HVC/A0

SCL

SDA

VSS

P1B

1 14

2 13

3 12

4 11

5 10

TSSOP

P2W

P2B

VDD

P0B

P0W

P1W

DS22265A-page 1


	Microchip Technology Semiconductor Electronic Components Datasheet

MCP4442 Datasheet

7/8-Bit Quad I2C Digital POT

No Preview Available !

MCP444X/446X

Device Block Diagram

VDD

VSS

HVC/A0

SCL

SDA

RESET

Power-up/

Brown-out

Control

I2C Serial

Interface

Module &

Control

Logic

(WiperLock™

Technology)

Memory (16x9)

Wiper0 (V & NV)

Wiper1 (V & NV)

Wiper2 (V & NV)

Wiper3 (V & NV)

TCON0

TCON1

STATUS

Data EEPROM

(5 x 9-bits)

Resistor

Network 0

(Pot 0)

Wiper 0

& TCON0

Resistor

Network 1

(Pot 1)

Wiper 1

& TCON0

Resistor

Network 2

(Pot 2)

Wiper 2

& TCON1

Resistor

Network 3

(Pot 3)

Wiper 3

& TCON1

P0A

P0W

P0B

P1A

P1W

P1B

P2A

P2W

P2B

P3A

P3W

P3B

Device Features

Device

Wiper

Configuration

Resistance (typical)

RAB Options (kΩ)

Wiper

- RW

(Ω)

VDD

Operating

Range(2)

MCP4431(3) 4 Potentiometer (1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V

MCP4432 (3) 4

Rheostat

I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V

MCP4441 4 Potentiometer (1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V

MCP4442 4

Rheostat

I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V

MCP4451(3) 4 Potentiometer(1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V

MCP4452(3) 4

Rheostat

I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V

MCP4461 4 Potentiometer(1) I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V

MCP4462 4

Rheostat

I2C EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V

Note 1:

Floating either terminal (A or B) allows the device to be used as a Rheostat (variable resistor).

Analog characteristics only tested from 2.7V to 5.5V unless otherwise noted.

Please check Microchip web site for device release and availability.

DS22265A-page 2

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MCP4442 Datasheet

7/8-Bit Quad I2C Digital POT

MCP4442 Datasheet

7/8-Bit Quad I2C Digital POT

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