We　present　the　integration　and　accuracy　and　power　improved　hearing　aid　system　that　proposes　the　triple　oscillation-based　loops　(TOL)　technique.　Compared　with　the　conventional　techniques,　the　technique　replaces　the　interface　capacitors,　A/D　and　D/A　convertors　with　the　oscillation-based　closed　loop　and　the　calibration/operation　feedback　paths,　which　are　able　to　enhance　the　integration　of　the　system　and　improve　the　system＇s　accuracy　and　power　performance.　Specifically,　the　technique　achieves　the　only　once　of　the　second-order　delta-sigma　modulation　with　an　integrator　and　an　oscillator.　To　realize　the　architecture,　the　current　mode　blocks　with　calibration　and　successive　subtraction　are　presented　on　the　circuit　design.　Simulated　with　a　0.13　μm　standard　CMOS　process　in　Cadence,　with　the　16　ohm　loudspeaker　impedance　under　the　1　V　supply　voltage,　the　input　referred　DC　offset　voltage　with　interface　capacitor　free　is　achieved　below　2.5　mV;　and　the　signal-to-noise　and　distortion　rate　(SNDR)　achieves　50　dB@400　mVp-p　output　voltage.　Moreover,　the　power　consumption　with　no　load　is　maintained　within　350　μW.　©　2014　World　Scientific　Publishing　Company.