
	Microchip Technology Semiconductor Electronic Components Datasheet

MCP4451 Datasheet

7/8-Bit Volatile Quad Digital POT

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MCP443X/5X

7/8-Bit Volatile Quad Digital POT

with I2C Interface

Features

• Quad Resistor Network

• Potentiometer or Rheostat Configuration Options

• Resistor Network Resolution:

7-bit – 128 Resistors (129 Taps)

8-bit – 256 Resistors (257 Taps)

• Four RAB Resistances options:

5 k

10 k

50 k

100 k

• Zero-scale to Full-scale Wiper Operation

• Low Wiper Resistance – 75  typical

• Low Tempco:

Absolute (Rheostat) – 50 ppm typical (0°-70°C)

Ratiometric (Potentiometer) – 15 ppm typical

• I2C Serial Interface Support:

100 kHz

400 kHz

3.4 MHz

• Serial Protocol Allows High-Speed Read/Write to

Wiper

• Resistor Network Terminal Disconnect Feature

via Terminal Control (TCON) Register

• Reset Input Pin

• 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 k Device

• Extended Temperature Range (-40°C to +125°C)

• Three Package Types:

4x4 QFN-20

TSSOP-20

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 NC

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 NC

VSS 5

11 P0B

6 7 8 9 10

4x4 QFN

MCP44X2 Quad Rheostat

P3W

P3B

HVC/A0

SCL

SDA

VSS

P1B

14 P2W

13 P2B

VDD

10 P0B

9 P0W

8 P1W

TSSOP

 2010 Microchip Technology Inc.

DS22267A-page 1


	Microchip Technology Semiconductor Electronic Components Datasheet

MCP4451 Datasheet

7/8-Bit Volatile Quad Digital POT

No Preview Available !

MCP443X/5X

Device Block Diagram

VDD

VSS

HVC/A0

SCL

SDA

Power-up/

Brown-out

Control

I2C Serial

Interface

Module &

Control

Logic

RESET

Memory (16x9)

Wiper0 (Vol)

Wiper1 (Vol)

Wiper2 (Vol)

Wiper3 (Vol)

TCON0

TCON1

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 (k)

Wiper

- RW

()

VDD

Operating

Range(2)

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

MCP4432 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 4 Potentiometer(1) I2C RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V

MCP4452 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).

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

DS22267A-page 2

 2010 Microchip Technology Inc.

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MCP4451 Datasheet

7/8-Bit Volatile Quad Digital POT

MCP4451 Datasheet

7/8-Bit Volatile Quad Digital POT

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