标题: MCP434X/436X Data Sheet [打印本页] 作者: admin 时间: 2010-4-17 17:55 标题: MCP434X/436X Data Sheet MCP434X/436X Quad Non-Volatile Data Sheet
The MCP436X devices are non-volatile, 6-bit (257 wiper steps) digital potentiometers that are programmed/reprogrammed through an SPI compatible interface. The MCP436X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count. These devices offer WiperLock™ Technology which allows the user unlimited reprogramming and locking of the wiper setting. This is useful for equipment that requires factory trimming or recalibration. The MCP434X family of devices are available with resistor values of 5KΩ, 10KΩ, 50k and 100KΩ.
Parameter Name Value
Temp. Range (°C) -40 to +125
Volatile / Non Volatile Nonvolatile
Number of Taps 257
Resistance (ohms) K 5, 10, 50, 100
# per Package 4
INL (Max) 1
DNL (Max) 0.5
Interface SPI
Features
Quad Resistor Network
Potentiometer or Rheostat configuration options
Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
RAB Resistances options of:
- 5k
- 10k
- 50k
- 100 k
Zero-Scale to Full-Scale Wiper operation
Low Wiper Resistance: 75 (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 k device
Extended temperature range (-40°C to +125°C)
