DESCRIPTION

The SA621 is a combined low-noise amplifier, mixer and VCO designed for high-performance low-power communication systems from 800-1000MHz. The low-noise preamplifier has a 1.7dB noise figure at 881MHz with 15dB gain and an IP3 intercept of -7dBm at the input. The gain is stabilized by on-chip compensation to vary less than ±0.2dB over -40 to +85°C temperature range.

FEATURES

• Low current consumption

• Outstanding gain and noise figure

• Excellent gain stability versus temperature and supply voltage

• LNA, mixer and VCO power down capability

• Monotonic VCO frequency vs control voltage

APPLICATIONS

• 900MHz cellular and cordless front-end

• Spread spectrum receivers

• RF data links

• UHF frequency conversion

• Portable radio