AD5174BRMZ-10

AD5174 is a single-channel, 1024-position digital rheostat that combines industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. The AD5174 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5174 does 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 resistance position (analogous to placing epoxy on a mechanical rheostat). Application includes 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.

• 10kohm nominal resistance, rheostat mode temperature coefficient is 35ppm/°C
• Single-supply power range from 2.7 to 5.5V (VSS = 0V, -40°C <lt/> TA <lt/> 125°C)
• SPI-compatible interface, wiper setting and memory readback
• Power on refreshed from memory, resistor tolerance stored in memory
• Resolution is 10bits (min, VDD = 2.7V to 5.5V, -40°C <lt/> TA <lt/> 125°C)
• Nominal resistor tolerance is ±15% (typ, VDD = 2.7 to 5.5V, -40 <lt/> TA <lt/> 125°C)
• Tristate leakage current range from -1 to +1μA (VDD = 2.7 to 5.5V, -40 <lt/> TA <lt/> 125°C)
• Bandwidth is 700KHz (typ, -3dB, RAW = 5kohm, terminal W, -40 <lt/> TA <lt/> 125°C)
• Total harmonic distortion is -90dB (typ, VA = 1Vrms, f = 1KHz, RAW = 5kohm)
• 10 lead MSOP package, operating temperature range from -40°C to +125°C

Notes

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