AD5274BCPZ-20-RL7

AD5274 is a single-channel, 1024-/256-position digital rheostat. It combines industry leading variable resistor performance with non-volatile memory (NVM) in a compact package. It ensures less than 1% end-to-end resistor tolerance error and offer 50-times programmable (50-TP) memory. Rheostat wiper settings are controllable through the I²C-compatible digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. They do not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the wiper position. It is widely used in application such as mechanical rheostat replacements, Op-amp: variable gain control, instrumentation: gain, offset adjustment, programmable voltage to current conversions, programmable filters, delays, time constants, programmable power supply, sensor calibration etc.

• Rheostat mode temperature coefficient is 5ppm/°C
• Nominal resistance is 20Kohm
• Dual-supply voltage for ac or bipolar operation ±2.5V to ±2.75V
• Wiper setting readback, total harmonic distortion is −90dB at (RAW = 20Kohm)
• Resolution is 10bits at (VDD = 2.7V to 5.5V), single-supply operation is 2.7V to 5.5V
• Operating temperature range is -40°C to +125°C
• Power dissipation is 5.5µW at (VIH = VDD or VIL = GND)
• Bandwidth is 300kHz typ at (RAW = 20Kohm)
• Resistor noise density is 13nV/√Hz at (RAW = 20Kohm)
• Packaging style is 10-lead LFCSP (3mm x 3mm)

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