发明名称 |
MOS CASCADE TYPE BIPOLAR CURRENT SOURCE IN NONEPITAXIAL STRUCTURE |
摘要 |
A 16-bit D/A converter formed on a single monolithic chip and having two cascaded stages each including a 256-R resistor string DAC. The analog output voltage of the first stage is coupled to the second stage by two buffer amplifiers each formed by a non-epitaxial process using a P-type substrate. The amplifiers include NMOS and PMOS-cascoded bipolar current sources arranged to avoid the use of metallization to provide for electrical interconnections within the source. |
申请公布号 |
JPS60193370(A) |
申请公布日期 |
1985.10.01 |
申请号 |
JP19850028482 |
申请日期 |
1985.02.18 |
申请人 |
ANALOG DEVICES INC |
发明人 |
PIITAA AARU HOROUEI |
分类号 |
H01L21/8234;H01L21/8249;H01L27/06;H01L27/07;H01L27/088;H03M1/00 |
主分类号 |
H01L21/8234 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|