MAX1471 Maxim Integrated Products, MAX1471 Datasheet - Page 9

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MAX1471

Manufacturer Part Number
MAX1471
Description
3V/5V ASK/FSK Superheterodyne Receiver
Manufacturer
Maxim Integrated Products
Datasheet

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LNASRC
LNAIN
XTAL1
XTAL2
AGND
DGND
SCLK
DV
AV
HV
DIO
CS
DD
DD
IN
14
24
23
29
26
27
28
8
9
6
5
7
3.0V
REG
3.0V
_______________________________________________________________________________________
OSCILLATOR
CRYSTAL
CONTROL REGISTERS,
AND POLLING TIMER
SERIAL INTERFACE,
FDATA
LNA
25
ASK/FSK Superheterodyne Receiver
DETECTOR
DIVIDE
PHASE
LNAOUT
BY 32
315MHz/434MHz Low-Power, 3V/5V
FSK DATA
10
FILTER
DSF-
19
MIXIN+
11
PDMAXF
FILTER
LOOP
18
VCO
MIXIN-
12
REJECTION
PDMINF
IMAGE
17
90 °
R
100kΩ
R
100kΩ
0 °
DF1
DF2
FSK
Σ
MIXOUT
DEMODULATOR
13
FSK
DSF+
IFIN-
20
15
OPF+
21
IFIN+
16
RSSI
DFF
22
ASK
IF LIMITING
AMPS
Functional Diagram
MAX1471
100kΩ
R
DF1
ASK DATA FILTER
R
100kΩ
DF2
31 PDMINA
32 PDMAXA
30 ADATA
1
4
3
2
DFA
OPA+
DSA+
DSA-
9

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