A monolithic 14-bit D/A converter

A monolithic 14-bit D/A converter using `dynamic element matching' to obtain a high accuracy and good long-term stability is described. Over a temperature range from -50/spl deg/ to 70/spl deg/C the nonlinearity is less than one-half least significant bit (/SUP 1///SUB 2/LSB). Dynamic tests show a distortion at a level of about -90 dB with respect to the maximum sinewave output. Nearly no glitches are found, so the converter can be operated without a deglitcher circuit. The chip, with a size of 3.1/spl times/3.2 mm, contains all elements needed, except the output amplifier and digital input latches.