CM1219hl – Low-Power Bandgap Reference Low Integrated Noise (62.5μVrms)

Power Management

This macro-cell is a low power voltage reference generator core designed for TSMC 40nm CRN40LP CMOS technology. The core is ideal as a general purpose reference voltage in applications where low output noise and wide PSRR band are critical.

The circuit generates an unbuffered 547mV, temperature compensated bandgap voltage reference (62.5ppm$/°C). Internal start-up circuit allows the reference is available as soon as the power supply ramps up, so none enable/disable function is necessary to start it up. It has three trimming bits for the coefficient temperature. It has a general purpose 800nA PTAT output current.

The core is easily re-targeted to any other CMOS technology.