256-Position, Ultralow Power 1.8 V Logic-Level Digital Potentiometer Features: Ultralow standby power IDD= 50 nA typical 256-position End-to-end resistance 100 Ω Logic high voltage 1.8 V Power supply 2.7 V to 5.5 V Low temperature coefficient 35 ppm/°C Compact thin 8-lead TSOT-8 (2.9 mm × 2.8 mm) package Simple 3-wire digital interface Wide operating temperature -40°C to +125°C Pin-to-pin compatible to AD5160 with CS inverted