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SA58646BD

Part Number	SA58646BD
Manufacturer	NXP
Description	UHF 900MHz transceiver IC
Published	Jul 10, 2014
Detailed Description	SA58646 UHF 900 MHz transceiver IC Rev. 01 — 8 February 2007 Product data sheet 1. General description The SA58646 is a...
Datasheet	SA58646BD PDF File

Overview

SA58646 UHF 900 MHz transceiver IC Rev.
01 — 8 February 2007 Product data sheet 1.
General 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 adjustments.
2.
Features I RF RX (single frequency conversion FM receiver): N Integrated LNA N Image reject mixer N FM detector at 10.
7 MHz including an IF limiter, a wide band PLL demodulator, an output ampliﬁer and a RSSI output N Carrier detection with programmable threshold N Programmable data ampliﬁer (slicer) phase I Synthesizer: N Crystal reference oscillator with integrated tuning capacitor N Reference frequency divider N Narrow band RX PLL including RX VCO with integrated varicaps N Narrow band TX PLL including TX VCO with integrated varicaps N VCO external inductors can be done with printed transmission lines on the PCB which offers substantial savings N Programmable clock divider with output buffer to drive a microcontroller I Baseband RX section: N Programmable RX gain (enable phone volume control) N Expander with output noise level control N Earpiece ampliﬁer with volume control feature N Data ampliﬁer I Baseband TX section: N Microphone ampliﬁer N Compressor with automatic level control and hard limiter N Programmable TX gain NXP Semiconductors SA58646 UHF 900 MHz transceiver IC I Microcontroller interface: N 3-wire serial interface I Other features: N Voltage regulator to supply internal PLLs N ...

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