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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4431 Datasheet

7/8-Bit Volatile Quad Digital POT

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MCP4431 pdf
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 kDevice
• 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
1
2
3
4
5
6
7
8
9
10
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
EP
21
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
1
2
3
4
5
6
7
14 P2W
13 P2B
12
11
VDD
A1
10 P0B
9 P0W
8 P1W
TSSOP
2010 Microchip Technology Inc.
DS22267A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4431 Datasheet

7/8-Bit Volatile Quad Digital POT

No Preview Available !

MCP4431 pdf
MCP443X/5X
Device Block Diagram
VDD
VSS
A1
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
Register
Resistor
Network 1
(Pot 1)
Wiper 1
& TCON0
Register
Resistor
Network 2
(Pot 2)
Wiper 2
& TCON1
Register
Resistor
Network 3
(Pot 3)
Wiper 3
& TCON1
Register
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.


Part Number MCP4431
Description 7/8-Bit Volatile Quad Digital POT
Maker Microchip Technology
Total Page 30 Pages
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