A reference circuit (200, 300) comprises a first current generator comprising a first transistor (Q1, 220) operably coupled to a second transistor (Q2, 222) and having respective base current (IbQ1, IbQ2) corresponding to a positive temperature dependence of the reference circuit. A resistance (r3 228) is operably coupled to the first current generator and arranged to provide a second current (Ir3) corresponding to a negative temperature dependence of the reference circuit. A second current generator (m4 224) is operably coupled to the resistance and the first current generator that generatesa combined current (I2) as a sum of the second current (Ir3) and base current (IbQ1, IbQ2). In this manner, the output voltage of the curvature compensated voltage and/or current reference circuit issubstantially linear and substantially independent of the operating temperature of the circuit.