Abstract
We present the first measurement results for silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs) and SiGe BiCMOS circuits operating in the sub-1-K regime. Robust transistor operation of a first-generation 0.5 × 2.5 × 4 μm2 SiGe transistor is demonstrated at package temperatures as low as 300 mK. In addition, a SiGe BiCMOS bandgap voltage reference is verified to be fully functional at operating temperatures below 700 mK. The SiGe voltage reference exhibits a temperature coefficient of 160 ppm/°C over the temperature range of 700 mK-300 K.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 508-510 |
| Number of pages | 3 |
| Journal | IEEE Electron Device Letters |
| Volume | 30 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2009 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Keywords
- Analog integrated circuits
- BiCMOS
- Cryogenic temperatures
- Heterojunction bipolar transistor (HBT)
- SiGe HBTs
- Silicon germanium (SiGe)
- Voltage reference