Author :
Singh, Hausila P. ; Sadler, Robert A. ; Tanis, William J. ; Schenberg, Alan N.
Abstract :
A number of low-power GaAs direct-coupled FET logic (DCFL) components developed for use in compact, fast-settling phase-locked-loop-type frequency synthesizer applications are discussed. These components include a divide-by-two circuit (2.7 GHz, 1.3 mW), a dual-modulus (÷10/11) prescaler (2.4 GHz, 15 mW), a 4-b ripple counter (2.4 GHz, 4.6 mW), a 4-b programmable prescaler (1.7 GHz, 36 mW), a 3-b programmable counter (1.9 GHz, 57 mW), a 4-b programmable counter (1.8 GHz, 70 mW), and a 6-b programmable counter (1.4 GHz, 90 mW). The circuits are fabricated with a high-yield refractory self-aligned gate process and operate over a wide variation in power supply voltage and temperature. When operated over a -55 to 125°C temperature range, the circuits show less than 20% degradation in their maximum clock frequency. The results demonstrate state-of-the-art high-frequency performance at extremely low power dissipation
Keywords :
III-V semiconductors; counting circuits; field effect integrated circuits; frequency synthesizers; gallium arsenide; integrated logic circuits; scaling circuits; -55 to 125 degC; 1.3 to 90 mW; 1.4 to 2.7 GHz; DCFL; GaAs; PLL type synthesizer; direct-coupled FET logic; divide-by-two circuit; dual modulus prescalar; fast-settling frequency synthesizers; high-frequency performance; low power dissipation; phase-locked-loop-type; programmable counter; programmable prescaler; refractory self-aligned gate process; ripple counter; Clocks; Counting circuits; Degradation; FETs; Frequency synthesizers; Gallium arsenide; Logic; Power supplies; Temperature distribution; Voltage;
