HCLTech offers IP RC Oscillator core consists of digital to analog current converter [IDAC], Ring Oscillator and Level shifter. The IDAC provides the required amount of bias current to the oscillator block for achieving the required frequency for ring oscillator. The ring oscillator contains three inverting stages, and the output of the ring oscillator is connected to input and forming a loop and used to generate the required frequency. The ring oscillator bias circuit is required to generate the output frequency of 256MHz at normal mode and 128MHz at low power mode on receiving the required amount of current from the IDAC block in typical condition. Over the PVT [Process, Voltage and Temperature] from -400C to
RC Oscillator - 256 MHz
Overview
Key Features
- Analog Supply Voltage ranges from 1.62V to 1.98V, typical voltage is 1.8V.
- Digital Supply Voltage ranges from 0.95V to 1.05V, typical voltage is 1V.
- Operating Temperature ranges from -400C to 1250C, typical temperature is 270C.
- Output frequency of Oscillator at normal mode varies from 246.8 MHz to 264 MHz, typical frequency is 256 MHz.
- Output frequency of Oscillator at low power mode varies from 106 MHz to 152 MHz, typical frequency is 128 MHz.
- Maximum frequency variation with trim is 29500 ppm without temperature calibration and with temperature calibration frequency in normal mode varies from -3.71% to +3.16% and in low power mode frequency varies from -17.8% to +22%.
- Typical current supplied to oscillator at normal mode is 591 µA and at low power mode is 269 µA.
- The Layout area is calculated as 0.03 mm2 by using Technology: 1P7M TSMC 40nm.
Block Diagram
Applications
- Provides required frequency to Process Monitor block for its proper working.
- Provides required frequency to Analog to Digital Converter for its efficient performance.
Technical Specifications
Foundry, Node
40 nm TSMC
Availability
Immediate