MCP4142 Microchip Technology Inc., MCP4142 Datasheet
MCP4142
Manufacturer Part Number
MCP4142
Description
7/8-bit Single/dual Spi Digital Pot With Volatile Memory
Manufacturer
Microchip Technology Inc.
Datasheet
1.MCP4142.pdf
(84 pages)
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Features
• Single or Dual Resistor Network options
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
• R
• Zero-Scale to Full-Scale Wiper operation
• Low Wiper Resistance: 75Ω (typ.)
• Low Tempco:
• Non-volatile Memory
• SPI serial interface (10 Mhz, modes 0,0 & 1,1)
• Resistor Network Terminal Disconnect Feature
• Write Protect Feature:
• 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:
• Wide Bandwidth (-3dB) Operation:
• Extended temperature range (-40°C to +125°C)
© 2007 Microchip Technology Inc.
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
- Absolute (Rheostat): 50 ppm typical
- Ratiometric (Potentiometer): 15 ppm typical
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
- High-Speed Read/Writes to wiper registers
- Read/Write to Data EEPROM registers
- Serially enabled EEPROM write protect
- SDI/SDO multiplexing (MCP41X1 only)
via:
- Shutdown pin (SHDN)
- Terminal Control (TCON) Register
- Hardware Write Protect (WP) Control pin
- Software Write Protect (WP) Configuration bit
- 2.7V to 5.5V - Device Characteristics
- 1.8V to 5.5V - Device Operation
- 2 MHz (typ.) for 5.0 kΩ device
AB
(0°C to 70°C)
Specified
Resistances options of:
7/8-Bit Single/Dual SPI Digital POT with
MCP414X/416X/424X/426X
Non-Volatile Memory
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, Non-Volatile memory configurations, and
Potentiometer and Rheostat pinouts.
WiperLock Technology allows application-specific
calibration settings to be secured in the EEPROM.
Package Types
SDI/SDO
Single Potentiometer
PDIP, SOIC, MSOP,
SCK
V
CS
SS
MCP41X1
3x3 DFN
MCP42X1 Dual Potentiometers
1
2
3
4
SCK
SDI
V
V
MCP42X2 Dual Rheostat
SCK
P1W
SS
SS
P1B
P1A
V
SDI
CS
PDIP, SOIC, TSSOP
SCK
P1B
SS
V
SDI
CS
SS
8
7
6
5
1
3
2
4
16
5
MSOP, DFN
1
2
3
4
5
6
7
V
P0B
P0W
4x4 QFN
P0A
1
2
3
4
5
DD
15
6
14
7
14
13
12
11
10
9
8
10
13
8
9
8
7
6
PDIP, SOIC, MSOP,
SCK
12
10 P0B
11
V
SDI
V
SDO
SHDN
WP
P0B
P0W
CS
P0A
9
Single Rheostat
SS
V
SDO
P0B
P0W
P1W
DD
DD
MCP41X2
NC
WP
P0W
3x3 DFN
DS22059A-page 1
1
2
3
4
8
7
6
5
V
SDO
P0B
P0W
DD
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