SA58646 Datasheet PDF

Part Number : SA58646

Function : UHF 900 MHz transceiver IC

Manufacturers : NXP Semiconductors.

Pinouts :

SA58646 datasheet

Description :

The SA58646 is a BiCMOS integrated circuit that performs all functions from the antenna
to the microcontroller for reception and transmission for both the base station and the
handset in a 902 MHz to 928 MHz full-duplex radio. The SA58646 may be used in a UHF
push-to-talk walkie-talkie or in a UHF to 900 MHz data transceiver. The SA58646 is a
pin-compatible derivative of the UAA3515 with advanced features.
This IC integrates most of the functions required for a half-duplex or full-duplex radio in a
single integrated circuit. Additionally, the programmability implemented reduces
significantly external components count, board space requirements and external

 RF RX (single frequency conversion FM receiver):
♦ Integrated LNA
♦ Image reject mixer
♦ FM detector at 10.7 MHz including an IF limiter, a wide band PLL demodulator, an
 output amplifier and a RSSI output
♦ Carrier detection with programmable threshold
♦ Programmable data amplifier (slicer) phase
♦ Crystal reference oscillator with integrated tuning capacitor
♦ Reference frequency divider
♦ Narrow band RX PLL including RX VCO with integrated varicaps
♦ Narrow band TX PLL including TX VCO with integrated varicaps
♦ VCO external inductors can be done with printed transmission lines on the PCB
which offers substantial savings
♦ Programmable clock divider with output buffer to drive a microcontroller
Baseband RX section:
♦ Programmable RX gain (enable phone volume control)
♦ Expander with output noise level control
♦ Earpiece amplifier with volume control feature
♦ Data amplifier
 Baseband TX section:
♦ Microphone amplifier
♦ Compressor with automatic level control and hard limiter
♦ Programmable TX gain


SA58646 Datasheet PDF Download

SA58646 pdf

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