公开(公告)号：US10032106B2

公开(公告)日：2018-07-24

申请号：US15418719

申请日：2017-01-28

Applicant: NXP B.V.

Inventor： Robert Entner

IPC: G06K19/06 ,  G06K19/077 ,  H03L1/04

Abstract: The disclosure relates to a temperature-controlled oscillator. Embodiments disclosed include a temperature-compensated oscillator (100) comprising: a first capacitive charging circuit (101) connected between a supply voltage connection (104) and a common connection (105), comprising a first transistor (106) and a first capacitor (107), the first transistor (106) arranged to switch states when the first capacitor (107) is charged above a threshold voltage of the first transistor (106); a second capacitive charging circuit (102) connected between the supply voltage connection (104) and the common connection (105), comprising a second transistor (109) and a second capacitor (110) arranged to begin discharging when the first transistor (106) switches states, the second transistor (109) arranged to switch states when the second capacitor (110) is discharged below a voltage equal to a supply voltage (VDD) at the supply voltage connection (104) minus a threshold voltage of the second transistor (109); and a third capacitive charging circuit (103) connected between the supply voltage connection (104) and the common connection (105), comprising a third transistor (111) and a third capacitor (112) arranged to begin discharging when the second transistor (109) switches states, the third transistor (111) arranged to switch states when the third capacitor (112) discharges below a threshold voltage of the third transistor (111).

公开(公告)号：US20170220918A1

公开(公告)日：2017-08-03

申请号：US15418719

申请日：2017-01-28

Applicant: NXP B.V.

Inventor： Robert Entner

IPC: G06K19/077 ,  H03L1/04

CPC classification number: G06K19/0772 ,  H03K3/011 ,  H03K3/0315 ,  H03L1/04

Abstract: The disclosure relates to a temperature-controlled oscillator. Embodiments disclosed include a temperature-compensated oscillator (100) comprising: a first capacitive charging circuit (101) connected between a supply voltage connection (104) and a common connection (105), comprising a first transistor (106) and a first capacitor (107), the first transistor (106) arranged to switch states when the first capacitor (107) is charged above a threshold voltage of the first transistor (106); a second capacitive charging circuit (102) connected between the supply voltage connection (104) and the common connection (105), comprising a second transistor (109) and a second capacitor (110) arranged to begin discharging when the first transistor (106) switches states, the second transistor (109) arranged to switch states when the second capacitor (110) is discharged below a voltage equal to a supply voltage (VDD) at the supply voltage connection (104) minus a threshold voltage of the second transistor (109); and a third capacitive charging circuit (103) connected between the supply voltage connection (104) and the common connection (105), comprising a third transistor (111) and a third capacitor (112) arranged to begin discharging when the second transistor (109) switches states, the third transistor (111) arranged to switch states when the third capacitor (112) discharges below a threshold voltage of the third transistor (111).