MCP40D17屬于集成電路（IC）的數(shù)字電位計。由微芯科技股份有限公司制造生產(chǎn)的MCP40D17數(shù)字電位計數(shù)字電位器是一系列集成電路器件，可提供類似于傳統(tǒng)機械電位器或變阻器的可調(diào)節(jié)電阻，但通過電子信號而非機械輸入來進行控制。雖然這些器件的電阻可耗散的電能相對有限，但其電子控制能力有助于小型化、自動化和遠程控制信號級模擬電路，而這些電路本來可能會使用機械電位器。

Features

? Potentiometer or Rheostat configuration options

? 7-bit: Resistor Network Resolution

- 127 Resistors (128 Steps)

? Zero Scale to Full Scale Wiper operation

? RAB Resistances: 5 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ

? Low Wiper Resistance: 100Ω (typical)

? Low Tempco:

- Absolute (Rheostat): 50 ppm typical (0°C to 70°C)

- Ratiometric (Potentiometer): 15 ppm typical

? I2C Protocol

- Supports SMBus 2.0 Write Byte/Word Protocol Formats

- Supports SMBus 2.0 Read Byte/Word Protocol Formats

? Standard I2C Device Addresses:

- All devices offered with address “0101110”

- MCP40D18 also offered with address “0111110”

? Brown-out reset protection (1.5V typical)

? Power-on Default Wiper Setting (Mid-scale)

? Low-Power Operation:

- 2.5 μA Static Current (typical)

? Wide Operating Voltage Range:

- 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)

? Very small package (SC70)

? Lead free (Pb-free) package

Applications

? PC Servers (I2C Protocol with Command Code)

? Amplifier Gain Control and Offset Adjustment

? Sensor Calibration (Pressure, Temperature, Position, Optical and Chemical)

? Set point or offset trimming

? Cost-sensitive mechanical trim pot replacement

? RF Amplifier Biasing

? LCD Brightnes and Contract Adjustment