* 256Positions * 10kΩ, 100kΩ, 1MΩ * Low temperature coefficient: 30ppm/℃ * Internal power on midscale preset * Single-supply 2.7V to 5.5V or dual-supply ±2.7V for ac or bipolar operation * I2C-compatible interface with readback capability * Extra programmable logic outputs * Self-contained shutdown feature * Extended temperature range:-40℃ to +105℃