Patent ID: 8416112

Claim:
An apparatus including a current steering digital-to-analog converter (DAC), comprising: current steering circuitry responsive to a plurality of currents by providing one or more analog voltages related to said plurality of currents; and current source circuitry including 2 n current source circuits, where n is an integer three or greater, coupled to said current steering circuitry and responsive to 2 n current control bits k by providing said plurality of currents, wherein each current control bit k of said plurality of 2 (n-1) current control bits, where 0≦k≦2 (n-1) −1, corresponds to one of a sequence 0, 1, 2, . . . , 2 (n-1) −1, said plurality of currents includes a m currents provided by m of said 2 n current source circuits, where m is an even integer 2 n −2, said 2 n current source circuits includes 2 (n-1) pairs of current source circuits, each of which corresponds to one of said sequence 0, 1, 2, . . . , 2 (n-1) −1, and each one of said 2 (n-1) successive pairs of current source circuits is jointly enabled and disabled by a respective one of said 2 (n-1) current control bits k and inverses of first and second other ones of said 2 (n-1) current control bits k.