Some of Widlar's designs like the LM12 power amplifier and the LM10 ultra-low-voltage amplifier introduced in 1978, remain in production in the 21st century.Harrison, p. 405. The LM10 is capable of operating with a 1.1V power supply, thus instead of a conventional bandgap reference it employs Widlar's sub-bandgap circuit locked at 200 mVHarrison, pp. 282, 405, 430. and the low-voltage Widlar output stage.Fonderie, Huijsing pp. 50-51. For 10 years, no one else in the industry was able to produce a circuit that matched the LM10.Harrison, p. 283.
