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General description

The SA602A is a low-power VHF monolithic double-balanced mixer with input amplifier, on-board oscillator, and voltage regulator. It is intended for high-performance, low-power communication systems. The guaranteed parameters of the SA602A make this device well-suited for cellular radio applications. The mixer is a ‘Gilbert cell’ multiplier configuration which typically provides 18 dB of gain at 45 MHz. The oscillator operates to 200 MHz. It can be configured as a crystal oscillator, a tuned tank oscillator, or a buffer for an external LO. For higher frequencies, the LO input may be externally driven. The noise figure at 45 MHz is typically less than 5 dB. The gain, intercept performance, low-power and noise characteristics make the SA602A a superior choice for high-performance battery operated equipment. It is available in an 8-lead SO (surface-mount miniature package).

Features and benefits

■ Low current consumption: 2.4 mA typical

■ Excellent noise figure: <4.7 dB typical at 45 MHz

■ High operating frequency

■ Excellent gain, intercept and sensitivity

■ Low external parts count; suitable for crystal/ceramic filters

■ SA602A meets cellular radio specifications

Applications

■ Cellular radio mixer/oscillator

■ Portable radio

■ VHF transceivers

■ RF data links

■ HF/VHF frequency conversion

■ Instrumentation frequency conversion

■ Broadband LANs