ADF7020-1BCPZ Analog Devices Inc, ADF7020-1BCPZ Datasheet - Page 26

• Manufacturer Part Number: ADF7020-1BCPZ
• Description: IC TX FSK/ASK ISM BAND 48LFCSP
• Manufacturer: Analog Devices Inc

Specifications of ADF7020-1BCPZ

• Design Resources: Low power, Long Range, ISM Wireless Measuring Node (CN0164)
• Frequency: 431MHz ~ 478MHz and 862MHz ~ 956MHz
• Data Rate - Maximum: 200kbps
• Modulation Or Protocol: ASK, FSK
• Applications: Data Transfer, RKE, Remote Control/Security Systems
• Power - Output: -16dBm ~ 13dBm
• Sensitivity: -119dBm
• Voltage - Supply: 2.3 V ~ 3.6 V
• Current - Receiving: 17.6mA
• Current - Transmitting: 21mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LFCSP
• Receiving Current: 20.1mA
• Transmitting Current: 13mA
• Data Rate: 200Kbps
• Frequency Range: 135MHz To 650MHz
• Modulation Type: ASK, FSK, GFSK, GOOK, OOK
• Rf Ic Case Style: LFCSP
• No. Of Pins: 48
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Operating Supply Voltage (min): 2.3V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADF7020-1DBZ8 - BOARD EVAL ADF7020-1 128-142MHZEVAL-ADF7020-1DBZ7 - BOARD EVAL ADF7020-1 310-340MHZEVAL-ADF7020-1DBZ6 - BOARD EVAL ADF7020-1 470-510MHZEVAL-ADF7020-1DBZ4 - BOARD EVAL ADF7020-1 405-435MHZEVAL-ADF7020-1DBZ5 - BOARD EVAL ADF7020-2 ADJ FREQ
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

ADF7020-1
TRANSMIT PROTOCOL AND CODING
CONSIDERATIONS
A dc-free preamble pattern is recommended for FSK/ASK/
OOK demodulation. The recommended preamble pattern is a
dc-free pattern such as a 10101010 … pattern. Preamble
patterns with longer run-length constraints, such as
11001100…, can also be used. However, this results in a longer
synchronization time of the received bit stream in the receiver.
Manchester coding can be used for the entire transmit protocol.
However, the remaining fields that follow the preamble header
do not have to use dc-free coding. For these fields, the
ADF7020-1 can accommodate coding schemes with a run-
length of up to 6 bits without any performance degradation.
If longer run-length coding must be supported, the ADF7020-1
has several other features that can be activated. These involve a
range of programmable options that allow the envelope detector
output to be frozen after preamble acquisition.
DEVICE PROGRAMMING AFTER INITIAL
POWER-UP
Table 12 lists the minimum number of writes needed to set up
the ADF7020-1 in either Tx or Rx mode after CE is brought
high. Additional registers can also be written to tailor the part
to a particular application, such as setting up sync byte
detection or enabling AFC. When going from Tx to Rx or vice
versa, the user needs to write only to the N register to alter the
LO by 200 kHz and to toggle the Tx/Rx bit.
Table 12. Minimum Register Writes Required for Tx/Rx Setup
Mode
Tx
Rx
(OOK)
Rx
(G/FSK)
Tx <->
Rx
Figure 38 and Figure 39 show the recommended programming
sequence and associated timing for power-up from
standby mode.
PREAMBLE
Reg 0
Reg 0
Reg 0
Reg 0
Figure 35. Typical Format of a Transmit Protocol
WORD
SYNC
Reg 1
Reg 1
Reg 1
FIELD
ID
Registers
Reg 2
Reg 2
Reg 2
DATA FIELD
Reg 4
Reg 4
CRC
Reg 6
Reg 6
Rev. 0 | Page 26 of 48
INTERFACING TO MICROCONTROLLER/DSP
Low level device drivers are available for interfacing to the
ADF7020-1, the ADI ADuC84x microcontroller parts, or the
Blackfin ADSP-BF53x DSPs using the hardware connections
shown in Figure 36 and Figure 37.
ADSP-BF533
ADuC84x
GPIO
Figure 37.ADSP-BF533 to ADF7020-1 Connection Diagram
Figure 36.ADuC84x to ADF7020-1 Connection Diagram
P3.2/INT0
SCLOCK
RSCLK1
DR1PRI
DT1PRI
MISO
MOSI
MOSI
MISO
RFS1
GND
SCK
VCC
P3.7
P2.4
P2.5
P2.6
P2.7
PF5
PF6
SS
TxRxDATA
RxCLK
CE
INT/LOCK
SREAD
SLE
SDATA
SCLK
SCLK
SDATA
SREAD
SLE
TxRxCLK
TxRxDATA
INT/LOCK
CE
VCC
GND
ADF7020-1
ADF7020-1