公开(公告)号：US20140002198A1

公开(公告)日：2014-01-02

申请号：US13651340

申请日：2012-10-12

Applicant: QUALCOMM INCORPORATED

Inventor： Emmanouil TERROVITIS ,  Abbas Komijani

IPC: H03K3/03

CPC classification number: H03K3/03 ,  H03K2005/00071

Abstract: An oscillator is disclosed that can generate an oscillation signal using a latch and two delay elements. For some embodiments, the oscillator includes an SR latch, a first delay element, and a second delay element. The SR latch has a first input, a second input, a first output, and a second output. The first delay element is coupled between the first output and the first input of the SR latch. The second delay element is coupled between the second output and the second input of the SR latch. For some embodiments, the first and second delay elements include a programmable pull-up circuit that allows the charging current to be adjusted in discrete amounts, and include a programmable capacitor circuit that allows the capacitance value to be adjusted in discrete amounts.

Abstract translation: 公开了一种使用锁存器和两个延迟元件产生振荡信号的振荡器。 对于一些实施例，振荡器包括SR锁存器，第一延迟元件和第二延迟元件。 SR锁存器具有第一输入，第二输入，第一输出和第二输出。 第一延迟元件耦合在第一输出和SR锁存器的第一输入端之间。 第二延迟元件耦合在SR锁存器的第二输出端和第二输入端之间。 对于一些实施例，第一和第二延迟元件包括允许以离散量调节充电电流的可编程上拉电路，并且包括允许以离散量调整电容值的可编程电容器电路。