AD5227BUJZ50-RL7

AD5227 is a 64-position up/down control digital potentiometer. This device performs the same electronic adjustment function as a 5V potentiometer or variable resistor. Its simple 3-wire up/down interface allows manual switching or high speed digital control. This device presents to midscale at power-up. When CS (active high) is enabled, the devices changes step at every clock pulse. The direction is determined by the state of the U/D (active high) pin. The interface is simple to activate by any host controller, discrete logic, or manually with a rotary encoder or pushbuttons. Application includes mechanical potentiometer and trimmer replacements, LCD backlight, contrast, and brightness controls, portable electronics level adjustment, programmable power supply, digital trimmer replacements, automatic closed-loop control.

• Simple up/down digital or manual configurable control
• Midscale preset, RAB is 50Kohm
• 10ppm/°C low potentiometer mode tempco
• 35ppm/°C typical resistance temperature coefficient (VDD = 3V ± 10% or 5 V ± 10%, -40 <lt/> TA <lt/> +105°C)
• 3μA maximum supply current (VIH = 5V or VIL = 0V, VDD = 5V)
• 1μs typical adjustment settling time (VA = 5V, ±1LSB error band, VB = 0, measured at VW)
• Chip select enable multiple device operation
• 6bits maximum resolution (VDD = 3V ± 10% or 5V ± 10%, -40°C <lt/> TA <lt/> +105°C)
• 2.7 to 5.5V power supply range (VDD = 3V ± 10% or 5V ± 10%, -40°C <lt/> TA <lt/> +105°C)
• 8 lead TSOT package, temperature range from -40°C to +105°C

บันทึก

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party