Patent ID: 8670737

Claim:
A digital delta sigma modulator comprising: an input integration stage comprising a digital integrator operably coupled to integrate a digital input signal to produce an integration output and a first gain module (g1) operably coupled to adjust magnitude of the integration output to produce an integrated digital signal; a resonating stage operably coupled to resonate the integrated digital signal to produce a resonating digital signal comprising: a first integration stage operably coupled to integrate a first resonating digital signal to produce a first integrated resonating digital signal; a second gain stage (g 2 ) operably coupled to adjust magnitude of the first resonating integrated digital signal to produce a second resonating digital signal; a second integration stage operably coupled to integrate the second resonating digital signal to produce the resonating digital signal; and a resonating feedback third gain module (g 3 ) operably coupled to adjust magnitude of the resonating digital signal to produce a resonating feedback signal, and wherein a noise transfer function (NTF) of the resonating stage satisfies: NTF( z )∝(1 −z −1 )((1 −z −1 ) 2 +g 2 g 3 z −2 ); and a quantizer stage operably coupled to produce a quantized signal from the resonating digital signal.