- Patent Title: Constant current digital to analog converter systems and methods
-
Application No.: US16740184Application Date: 2020-01-10
-
Publication No.: US11671109B2Publication Date: 2023-06-06
- Inventor: Toshitsugu Kawashima , Jose Antonio Gómez Urdampilleta , Masahiro Takeuchi , Yohei Ishizone , Ryo Endo
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder P.C.
- Main IPC: H03M1/78
- IPC: H03M1/78 ; H03M1/80 ; H03M1/08 ; H03M1/68

Abstract:
An electronic device may include a digital to analog converter receiving digital signals and outputting analog signals based on the received digital signals. The electronic device may also include a power source to supply current to the digital to analog converter. The digital to analog converter may include a first resistor ladder section to electrically couple an output node of the digital to analog converter to the power source via a first number of resistors in series. The digital to analog converter may also include a second resistor ladder section to electrically couple the output node to a reference voltage via a second number of resistors in series. The sum of the first number of resistors in series and the second number of resistors in series may be the same for each of the different analog signals.
Public/Granted literature
- US20210099185A1 CONSTANT CURRENT DIGITAL TO ANALOG CONVERTER SYSTEMS AND METHODS Public/Granted day:2021-04-01
Information query
IPC分类: