发明名称 |
Capacitive digital to analog converter which can be trimmed up and down |
摘要 |
A capacitive digital to analog converter which can be trimmed to obtain precise capacitor matching is provided. The trimming method may be utilized with a weighted capacitive D/A converter having a scaling capacitor and an ordered plurality of capacitors for developing an analog output signal as a function of a digital input code. A compensation portion is coupled to at least a predetermined one of the capacitors for selectively changing the effective capacitive value of the predetermined capacitor.
|
申请公布号 |
US4568917(A) |
申请公布日期 |
1986.02.04 |
申请号 |
US19830507890 |
申请日期 |
1983.06.27 |
申请人 |
MOTOROLA, INC. |
发明人 |
MCKENZIE, JAMES A.;PETERSON, JOE W. |
分类号 |
H03M1/10;H03M1/00;H03M1/74;(IPC1-7):H03M1/00 |
主分类号 |
H03M1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|