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AS3977 Datasheet(PDF) 5 Page - ams AG |
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AS3977 Datasheet(HTML) 5 Page - ams AG |
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5 / 47 page  www.austriamicrosystems.com/AS3977 Revision 3.6 5 - 47 AS3977 Data Sheet - P i n A s s i g n m e n t s 4 Pin Assignments Figure 2. Pin Assignments (Top View) 4.1 Pin Descriptions Table 1. Pin Descriptions Pin Name Pin Number Type Description PREOUT 1 Open Collector preamplifier output, need a feeding coil connected to VREGRF or VDD and is the input for the Power amplifier PAOUT 2 Open Collector power amplifier output, need a feeding coil connected to VREGRF or VDD RESERVED 3 Must be connected to GND VCCPLL 4 Positive Power Pin Positive supplies of VCO, for optimum performance, add decoupling capacitors on this Pin. ENABLE 5 Digital CMOS level input, internal Pull down resistor > 60k 2 1 3 4 11 12 10 9 6 5 7 8 15 16 14 13 AS3977 PREOUT PAOUT GND VCCPLL MCCLK DATAIO VDD VREGDIG PREOUT PAOUT PREOUT EN ABLE |
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