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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4341 Datasheet

(MCP434x / MCP436x) 7-bit (129 Wiper Steps) Digital Potentiometers

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MCP434X/436X
7/8-Bit Quad SPI Digital POT with
Non-Volatile 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
• Non-volatile Memory
- Automatic Recall of Saved Wiper Setting
- WiperLock™ Technology
• SPI serial interface (10 MHz, modes 0,0 & 1,1)
- High-Speed Read/Writes to wiper registers
- Read/Write to Data EEPROM registers
- Serially enabled EEPROM write protect
• 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
• 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 (Top View)
MCP43X1 Quad Potentiometers
P3A
P3W
P3B
CS
SCK
SDI
VSS
P1B
P1W
P1A
1
2
3
4
5
6
7
8
9
10
20 P2A
19 P2W
18 P2B
17 VDD
16 SDO
15 RESET
14 WP
12 P0B
12 P0W
11 P0A
TSSOP
P3B 1 20 19 18 17 16 15 VDD
14 SDO
CS 2
SCK 3
SDI 4
EP
21
13 RESET
12 WP
VSS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP43X2 Quad Rheostat
P3W
P3B
CS
SCK
SDI
VSS
P1B
1 14
2 13
3 12
4 11
5 10
69
78
TSSOP
P2W
P2B
VDD
SDO
P0B
P0W
P1W
© 2009 Microchip Technology Inc.
DS22233A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP4341 Datasheet

(MCP434x / MCP436x) 7-bit (129 Wiper Steps) Digital Potentiometers

No Preview Available !

MCP434X/436X
Device Block Diagram
VDD
VSS
CS
SCK
SDI
SDO
WP
RESET
Power-up/
Brown-out
Control
SPI 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
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
www.DataSheet4U.com
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)
MCP4331 (3) 4 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4332 (3) 4
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 129 1.8V to 5.5V
MCP4341 4 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4342 4
Rheostat SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 129 2.7V to 5.5V
MCP4351 (3) 4 Potentiometer (1) SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4352 (3) 4
Rheostat
SPI RAM No Mid-Scale 5.0, 10.0, 50.0, 100.0 75 257 1.8V to 5.5V
MCP4361 4 Potentiometer (1) SPI EE Yes NV Wiper 5.0, 10.0, 50.0, 100.0 75 257 2.7V to 5.5V
MCP4362 4
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.
DS22233A-page 2
© 2009 Microchip Technology Inc.


Part Number MCP4341
Description (MCP434x / MCP436x) 7-bit (129 Wiper Steps) Digital Potentiometers
Maker Microchip Technology
Total Page 30 Pages
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