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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4261 Datasheet

7/8-Bit Single/Dual SPI Digital POT

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MCP413X/415X/423X/425X
7/8-Bit Single/Dual SPI Digital POT with Volatile Memory
Features
• Single or Dual Resistor Network options
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
• RAB Resistances options of:
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
• Zero Scale to Full Scale Wiper operation
• Low Wiper Resistance: 75Ω (typ.)
• Low Tempco:
- Absolute (Rheostat): 50 ppm typical
(0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• SPI Serial Interface (10 MHz, modes 0,0 & 1,1)
- High-Speed Read/Writes to wiper registers
- SDI/SDO multiplexing (MCP41X1 only)
• Resistor Network Terminal Disconnect Feature
via:
- Shutdown pin (SHDN)
- Terminal Control (TCON) Register
• Brown-out reset protection (1.5V typical)
• Serial Interface Inactive current (2.5 uA typ.)
• High-Voltage Tolerant Digital Inputs: Up to 12.5V
• Supports Split Rail Applications
• Internal weak pull-up on all digital inputs
• 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 (typ.) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
Description
The MCP41XX and MCP42XX devices offer a wide
range of product offerings using an SPI interface. This
family of devices support 7-bit and 8-bit resistor
networks, and Potentiometer and Rheostat pinouts.
Package Types
MCP41X1
Single Potentiometer
MCP41X2
Single Rheostat
CS
SCK
SDI/SDO
VSS
1
2
3
4
8
7
VDD
P0B
6 P0W
5 P0A
PDIP, SOIC, MSOP,
3x3 DFN
CS
SCK
SDI
VSS
1
2
3
4
8
7
VDD
SDO
6 P0B
5 P0W
PDIP, SOIC, MSOP,
3x3 DFN
MCP42X1 Dual Potentiometers
CS
SCK
SDI
VSS
P1B
P1W
P1A
1
2
3
4
5
6
7
14 VDD
13 SDO
12 SHDN
11 NC
10 P0B
9 P0W
8 P0A
PDIP, SOIC, TSSOP
SCK
SDI
VSS
VSS
116 15 14 1312
2 11
3 10
49
5678
NC
NC
P0B
P0W
4x4 QFN
MCP42X2 Dual Rheostat
CS
SCK
SDI
VSS
P1B
1
2
3
4
5
10
9
VDD
SDO
8 P0B
7 P0W
6 P1W
MSOP, DFN
© 2007 Microchip Technology Inc.
DS22060A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4261 Datasheet

7/8-Bit Single/Dual SPI Digital POT

No Preview Available !

MCP413X/415X/423X/425X
Device Block Diagram
VDD Power-up/
VSS
Brown-out
Control
CS
SCK
SDI
SDO
NC
SHDN
For Dual Potentiometer
Devices Only
SPI Serial
Interface
Module &
Control
Logic
(WiperLock™
Technology)
Memory (4x9)
Wiper0
Wiper1
TCON
STATUS
Resistor
Network 0
(Pot 0)
Wiper 0
& TCON
Register
Resistor
Network 1
(Pot 1)
Wiper 1
& TCON
Register
For Dual Resistor Network
Devices Only
P0A
P0W
P0B
P1A
P1W
P1B
Device Features
Device
Wiper
Configuration
Resistance (typical)
RAB Options (kΩ)
Wiper
- RW
(Ω)
VDD
Operating
Range (2)
MCP4131 (3) 1 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4132 (3) 1
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4141
1 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4142 1
Rheostat
SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4151 (3) 1 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4152 (3) 1
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4161
1 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4162 1
Rheostat
SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4231 (3) 2 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4232 (3) 2
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4241
2 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4242 2
Rheostat
SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4251 (3) 2 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4252 (3) 2
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4261
2 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4262 2
Rheostat
SPI 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.
3: Please check Microchip web site for device release and availability.
DS22060A-page 2
© 2007 Microchip Technology Inc.


Part Number MCP4261
Description 7/8-Bit Single/Dual SPI Digital POT
Maker Microchip Technology
Total Page 30 Pages
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