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SA639 - Low voltage mixer FM IF system

Description

The SA639 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector, logarithmic Received Signal Strength Indicator (RSSI), fast RSSI op amps, voltage regulator, wideba

Features

  • VCC = 2.7 V to 5.5 V.
  • Low power consumption: 8.6 mA (typical) at 3 V.
  • Wideband data output (1 MHz minimum).
  • Fast RSSI rise and fall times.
  • Mixer input to >500 MHz.
  • Mixer conversion power gain of 9.2 dB and noise figure of 11 dB at 110 MHz.
  • XTAL oscillator effective to 150 MHz (L. C. oscillator to 1 GHz local oscillator can be injected).
  • 92 dB of IF amplifier/limiter power gain.
  • 25 MHz limiter small signal bandwidth.
  • Temperature compensated logari.

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Datasheet preview – SA639

Datasheet Details

Part number SA639
Manufacturer NXP
File Size 728.97 KB
Description Low voltage mixer FM IF system
Datasheet download datasheet SA639 Datasheet
Additional preview pages of the SA639 datasheet.

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Full PDF Text Transcription

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SA639 Low voltage mixer FM IF system with filter amplifier and data switch Rev. 4 — 10 July 2014 Product data sheet 1. General description The SA639 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector, logarithmic Received Signal Strength Indicator (RSSI), fast RSSI op amps, voltage regulator, wideband data output, post detection filter amplifier and data switch. The SA639 is available in 24-lead TSSOP (Thin Shrink Small Outline Package). The SA639 was designed for high-bandwidth portable communication applications and functions down to 2.7 V. The RF section is similar to the famous NE605.
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