HFA3860B データシートの表示（PDF） - Intersil
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HFA3860B Datasheet PDF : 40 Pages
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HFA3860B
Typical Application Diagram
HFA3724/6
(FILE# 4067)
HFA3860B
(FILE# 4594)
HFA3424 (NOTE)
(FILE# 4131)
HFA3624
UP/DOWN
CONVERTER
(FILE# 4066)
RXI
A/D
DEMOD
DE-
SPREAD
I
RXQ
A/D
÷2
0o/90o M
U
M RSSI
U
802.11
A/D
CCA
MAC-PHY
INTERFACE
X
X
TXI
RFPA
HFA3925
(FILE# 4132)
VCO VCO
Q
DUAL SYNTHESIZER
HFA3524 (FILE# 4062)
QUAD IF MODULATOR
SPREAD
TXQ
MOD.
DSSS BASEBAND PROCESSOR
TYPICAL TRANSCEIVER APPLICATION CIRCUIT USING THE HFA3860B
NOTE: Required for systems targeting 802.11 specifications.
For additional information on the PRISM™ chip set, call
(407) 724-7800 to access Harris’ AnswerFAX system. When
prompted, key in the four-digit document number (File #) of
the data sheets you wish to receive.
The four-digit file numbers are shown in the Typical
Application Diagram, and correspond to the appropriate
circuit.
Pin Descriptions
NAME
VDDA
(Analog)
VDD
(Digital)
GND
(Analog)
GND
(Digital)
VREFN
VREFP
IIN
QIN
ANTSEL
ANTSEL
RSSI
PIN
10, 18, 20
TYPE I/O
DESCRIPTION
Power DC power supply 2.7V - 3.6V (Not Hardwired Together On Chip).
7, 21, 29, 42 Power DC power supply 2.7 - 3.6V
11, 15, 19 Ground DC power supply 2.7 - 3.6V, ground (Not Hardwired Together On Chip).
6, 22, 31, 41 Ground DC power supply 2.7 - 3.6V, ground.
17
I
“Negative” voltage reference for A/D’s (I and Q) [Relative to VREFP]
16
I
“Positive” voltage reference for A/D’s (I, Q and RSSI)
12
I
Analog input to the internal 3-bit A/D of the In-phase received data.
13
I
Analog input to the internal 3-bit A/D of the Quadrature received data.
26
O
The antenna select signal changes state as the receiver switches from antenna to antenna during the
acquisition process in the antenna diversity mode. This is a complement for ANTSEL (pin 27) for
differential drive of antenna switches.
27
O
The antenna select signal changes state as the receiver switches from antenna to antenna during the
acquisition process in the antenna diversity mode. This is a complement for ANTSEL (pin 26) for
differential drive of antenna switches.
14
I
Receive Signal Strength Indicator Analog input.
4-3
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