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ADF7021 датащи(PDF) 44 Page - Analog Devices

номер детали ADF7021
подробное описание детали  High Performance Narrow-Band Transceiver IC
PDF  64 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADF7021 датащи(HTML) 44 Page - Analog Devices

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ADF7021
Data Sheet
Rev. B | Page 44 of 64
APPLICATIONS CIRCUIT
The ADF7021 requires very few external components for
operation. Figure 56 shows the recommended application
circuit. Note that the power supply decoupling and regulator
capacitors are omitted for clarity.
For recommended component values, refer to the ADF7021
evaluation board data sheet and AN-915 application note
accessible from the ADF7021 product page. Follow the
reference design schematic closely to ensure optimum
performance in narrow-band applications.
ADF7021
VCOIN
CREG1
VDD1
RFOUT
RFGND
RFIN
RFINB
RLNA
VDD4
RSET
CREG4
GND4
1
2
3
4
5
6
7
8
9
10
11
12
CLKOUT
TxRxDATA
TxRxCLK
SWD
VDD2
CREG2
ADCIN
GND2
SCLK
SREAD
SDATA
SLE
36
35
34
33
32
31
30
29
28
27
26
25
VDD
VDD
VDD
TCXO
VDD
VDD
VDD
ANTENNA
CONNECTION
TO
MICROCONTROLLER
Tx/Rx SIGNAL
INTERFACE
TO
MICROCONTROLLER
CONFIGURATION
INTERFACE
T-STAGE LC
FILTER
MATCHING
LOOP FILTER
CVCO
CAP
EXT VCO L*
REFERENCE
RSET
RESISTOR
RLNA
RESISTOR
CHIP ENABLE
TO MICROCONTROLLER
*PIN 44 AND PIN 46 CAN BE LEFT FLOATING IF EXTERNAL INDUCTOR VCO IS NOT USED.
NOTES
1. PINS [13:18], PINS [20:21], AND PIN 23 ARE TEST PINS AND ARE NOT USED IN NORMAL OPERATION.
Figure 56. Typical Application Circuit (Regulator Capacitors and Power Supply Decoupling Not Shown)



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