h1_key

说明

MCP4451设备是易失性的8位（257个擦拭步）数字电位计，通过I2C™兼容接口进行编程/重新编程。MCP4451系列器件的电阻值分别为5K、10K、50K和100K。

特性

• Quad Resistor Network
• Potentiometer or Rheostat configuration options
• 7-bit – 128 Resistors (129 Taps)
• 8-bit: 256 Resistors (257 Taps)
• 5 kohm
• 10 kohm
• 50 kohm
• 100 kohm
• Zero-scale to Full-scale Wiper Operation
• Low Wiper Resistance – 75 ohm typical
• Absolute (Rheostat) – 50 ppm typical (0°-70°C)
• Ratiometric (Potentiometer) – 15 ppm typical
• 100 kHz
• 400 kHz
• 3.4 MHz
• High-Speed Read/Write to wiper
• Read/Write to EEPROM
• Write Protect to be enabled/disable
• WiperLock to be enabled/disabled
• Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register
• Reset Input Pin
• 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, except SCL and SDA
• 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 kohm Device
• Extended Temperature Range (-40°C to +125°C)
• Package Types: 4x4 QFN-20 and TSSOP-20
• AEC-Q100 Grade 1 quarlified

参数