CM1217hf – Low-Noise Bandgap Reference Low noise: 63nV/ √ Hz, PSRR: -80dB

Power Management

This macro-cell is a low noise, high PSRR voltage reference core designed for TSMC 0.18μm (CLM18) CMOS technology. The core is ideal for applications where noise performance is critical.

The circuit generates a buffered 1.185V, temperature-compensated bandgap voltage reference (40ppm/°C). A 5-bit trimming is available and guarantees +/- 1.5% output voltage accuracy. A 25μA reference current source (PTAT) for external use is also included.

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