AD5258BRMZ100

AD5258 is a non-volatile, I²C®-compatible 64-position, digital potentiometer. It perform the same electronic adjustment function as mechanical potentiometers or variable resistors, but with enhanced resolution and solid-state reliability. The wiper settings are controllable through an I²C-compatible digital interface that is also used to read back the wiper register and EEPROM content in addition, resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. There is also a software write protection function that ensures data cannot be written to the EEPROM register. It is widely used in application such as LCD panel VCOM adjustment, LCD panel brightness and contrast control, mechanical potentiometer replacement in new designs, programmable power supplies, RF amplifier biasing, automotive electronics adjustment, gain control and offset adjustment, fibre to the home systems, electronics level settings etc.

• VLOGIC pin provides increased interface flexibility
• Power-on EEPROM refresh time <lt/>1ms
• Software write protect command
• Address decode pin AD0 and address encode pin AD1 allow four packages per bus
• 100-year typical data retention at 55°C
• Single supply operating range is 3V to 5V
• Total harmonic distortion is 0.1% at (RAB = 10Kohm, VA = 1V rms, VB = 0, f = 1KHz)
• Resistor noise voltage density is 9nV/√Hz at (RWB = 5Kohm, f = 1KHz)
• End-to-end resistance is 100Kohm
• Temperature range is -40°C to +85°C, package style is 10-lead MSOP

บันทึก

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