1
Magnus Karl Olof Karlsson: PLL phase/frequency detector with fully differential output charge pump. Zarlink Semiconductor, Lawrence E Laubscher Jr, March 6, 2007: US07187242 (4 worldwide citation)

Charge current in a charge pump of a phase locked loop is equalized by controlling one of the direct current sources with a feedback signal derived from the common mode voltage of a fully differential phase locked loop filter.


2
Magnus Karl Olof Karlsson, Koen J Weijand, Tony Hans Ohlsson: Low power SRAM. Zarlink Semiconductor, Lawrence E Laubscher Jr, February 22, 2005: US06859385 (3 worldwide citation)

An SRAM has a bit cell for storing a data bit in voltage mode at a data node, and a single bit line for respectively writing to and reading from said data node a data bit in reference current controlled mode. The SRAM has ultra low power consumption and can be used in word based SRAMs.


3
Magnus Karl Olof Karlsson, Koen J Weijand, Tony Hans Ohlsson: Low power SRAM. Zarlink Semiconductor, Law Office Of Lawrence E Laubscher Jr, September 11, 2003: US20030169619-A1

An SRAM has a bit cell for storing a data bit in voltage mode at a data node, and a single bit line for respectively writing to and reading from said data node a data bit in reference current controlled mode. The SRAM has ultra low power consumption and can be used in word based SRAMs.


4
Magnus Karl Olof Karlsson: PLL phase/frequency detector with fully differential output charge pump. Zarlink Semiconductor, Laubscher Severson, August 4, 2005: US20050168291-A1

Charge current in a charge pump of a phase locked loop is equalized by controlling one of the direct current sources with a feedback signal derived from the common mode voltage of a fully differential phase locked loop filter.