AS3977_V01 datasheet(5/47 Pages) AMSCO

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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

Open Collector preamplifier output, need a feeding coil

connected to VREGRF or VDD and is the input for the Power

amplifier

PAOUT

Open Collector power amplifier output, need a feeding coil

connected to VREGRF or VDD

RESERVED

Must be connected to GND

VCCPLL

Positive Power Pin

Positive supplies of VCO, for optimum performance, add

decoupling capacitors on this Pin.

ENABLE

Digital CMOS level input, internal Pull down resistor > 60k

AS3977

PREOUT

PAOUT

GND

VCCPLL

MCCLK

DATAIO

VDD

VREGDIG

PREOUT

PAOUT

PREOUT

EN ABLE

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