Ken Yang, application engineer, received an MSEE from the University of California-San Diego, La Jolla, Calif. Email address: ken_yang@maximhq.com Web site: http://www.maxim-ic.com
7 results found for Ken Yang, displaying items 1 - 7
November 6, 2006[Ideas For Design] Ensure A Fixed Bias Current For Gain Blocks
RF gain blocks (amplifiers) are popular because they offer wide bandwidth, low noise, and ease of use. They're designed to operate with a fixed value of supply current because variations in supply current cause variations in the gain, compression point, and other crucial specifications. Typically, a series resistor sets the supply current to a value based on the known value of dc voltage at the RF choke. That voltage, however, can vary from part to part. For instance, the GALI-21...
April 14, 2005[Ideas For Design] Single Transistor Cuts LDO Noise By 46 dB
Some of the many low-dropout (LDO) regulators supplying voltage regulation for electronic systems are designed for low noise. For example, the IC in Figure 1 achieves an RMS noise voltage of about 115 µV by itself. However, some ultra-low-noise applications such as instrumentation and high-quality audio require even lower noise. For that purpose, the Figure 1 circuit includes an external transistor and simple low-pass RC filter. Together, they reduce the supply noise by more...
