On-chip temperature sensor and oscillator for reduced self-refresh current for dynamic random access memory
US6281760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/011
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A temperature dependent clock circuit (100) is disclosed. The clock circuit (100) includes a reference circuit (102) that provides a first group of reference signals (108) with positive temperature coefficients and a second group of reference signals (110) with negative temperature coefficients. A sample circuit (104) compares the first group of signals (108) with a second group of signals (110) and provides a group of bias signals (112) representative of the operating temperature of the clock circuit (100). A frequency controllable oscillator circuit (106) provides an output clock signal (CLK) having a frequency that is dependent upon the values of the bias signals (112).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.