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RF Receiver Module RFM65W 868MHZ
The RFM65W is a highly integrated RF receiver module capable of operation over a wide frequency range, including the 868 MHz license-free ISM (Industry Scientific and Medical) frequency bands. Its highly integrated architecture allows for a minimum of external components whilst maintaining maximum design flexibility. All major RF communication parameters are programmable and most of them can be dynamically set. The RFM65W offers the unique advantage of programmable narrow-band and wide-band communication modes without the need to modify external components. The RFM65W is optimized for low power consumption while offering high sensitivity and channelized operation. TrueRF™ technology enables a low-cost external component count (elimination of the SAW filter) whilst still satisfying ETSI and FCC regulations.
Feature and application:
Features:
-
High Sensitivity: down to -120 dBm at 1.2 kbps
-
High Selectivity: 16-tap FIR Channel Filter
-
Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,80 dB Blocking Immunity, no Image Frequency response
-
Low current: Rx = 16 mA, 100nA register retention
-
Constant RF performance over a voltage range of chip
-
FSK Bit rates up to 300 kb/s
-
Fully integrated synthesizer with a resolution of 61 Hz
-
FSK, GFSK, MSK, GMSK and OOK demodulation
-
Built-in Bit Synchronizer performing Clock Recovery
-
Incoming Sync Word Recognition
-
115 dB+ Dynamic Range RSSI
-
Automatic RF Sense with ultra-fast AFC
-
Packet engine with CRC, AES-128 encryption and 66-byte FIFO
-
Built-in temperature sensor and Low Battery indicator
Applications:
-
Automated Meter reading
-
Wireless Sensor Networks
-
Home and Building Automation
-
Wireless Alarm and Security Systems
-
Industrial Monitoring and Control
-
Wireless M-BUS
Block Diagram:
Pin diagram:
Pin Description:
-
Number
Name
Type
Description
1
RESET
I/O
Reset trigger input
2
DIO0
I/O
Digital I/O, software configured
3
DIO1
I/O
Digital I/O, software configured
4
DIO2
I/O
Digital I/O, software configured
5
DIO3
I/O
Digital I/O, software configured
6
DIO4
I/O
Digital I/O, software configured
7
DIO5
I/O
Digital I/O, software configured
8
3.3V
-
Supply voltage
9
GND
-
Ground
10
ANA
RF signal output/input.
11
GND
-
Ground
12
SCK
I
SPI Clock input
13
MISO
O
SPI Data output
14
MOSI
I
SPI Data input
15
NSS
I
SPI Chip select input
16
NC
‐
Connect to GND
Electrical characteristics:
Absolute Maximum Ratings:
Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for extended periods may affect device reliability.
-
Symbol
Description
Min
Max
Unit
VDDmr
Supply Voltage
-0.5
3.9
V
Tmr
Temperature
-55
+115
° C
Tj
Junction temperature
-
+125
° C
Pmr
RF Input Level
-
+6
dBm
Operating range:
-
Symbol
Description
Min
Max
Unit
VDDop
Supply voltage(1.8V-2.4V 17dBm, 2.4V- 3.6V 20dBm)
1.8
3.6
V
Top
Operational temperature range
-40
+85
°C
Clop
Load capacitance on digital ports
-
25
pF
ML
RF Input Level
-
0
dBm
Module consumption:
The tables below give the electrical specifications of the transceiver under the following conditions: Supply voltage VBAT1=VBAT2=VDD=3.3 V, temperature = 25 °C, Pout = +13dBm, 2-level FSK modulation without pre-filtering, FDA = 5 kHz, Bit Rate = 4.8 kb/s and terminated in a matched 50 Ohm impedance, unless otherwise specified.
Note: Unless otherwise specified, the performances in the other frequency bands are similar or better.
Power consumption:
-
Symbol
Description
Conditions
Min
Typ
Max
Unit
IDDSL
Supply current in sleep mode
-
0.1
1
uA
IDDIDLE
Supply current in Idle mode
RC oscillator enabled
-
1.2
-
uA
IDDST
Supply current in standby mode
Crystal oscillator enabled
-
1.25
1.5
mA
IDDFS
Supply current in synthesizer mode
-
9
-
mA
IDDR
Supply current in receive mode
-
16
-
mA
Frequency synthesis:
-
Symbol
Description
Conditions
Min
Typ
Max
Unit
FR
Synthesizer Frequency Range
315MHz
433MHz
868MHz
915MHz
290
424
862
890
340
510
890
1020
MHz
MHz
MHz
MHz
FXOSC
Crystal oscillator frequency
For All Module
-
32
-
MHz
TS_OSC
Crystal oscillator wake-up time
-
250
500
us
TS_FS
Frequency synthesizer wake-up time to PllLock signal
From Standby mode
-
80
150
us
TS_HOP
Frequency synthesizer hop time at most 10 kHz away from the target
200 kHzstep
1 MHzstep
5 MHzstep
7 MHzstep
12 MHzstep
20 MHzstep
25 MHzstep
-
-
-
-
-
-
-
20
20
50
50
80
80
80
-
-
-
-
-
-
-
us
us
us
us
us
us
us
FSTEP
Frequency synthesizer step
FSTEP = FXOSC/219
-
61.0
-
Hz
FRC
RC Oscillator frequency
After calibration
-
62.5
-
kHz
BRF
Bit rate, FSK
Programmable
1.2
-
300
kbps
BRO
Bit rate, OOK
Programmable
1.2
-
32.768
kbps
Receiver:
All receiver tests are performed withRxBw= 10 kHz (Single Side Bandwidth) as programmed inRegRxBw, receiving a PN15 sequence with a BER of 0.1% (Bit Synchronizer is enabled), unless otherwise specified. The LNA impedance is set to 200 Ohms, by setting bitLnaZininRegLnato 1. Blocking tests are performed with an unmodulated interferer. The wanted signal power for the Blocking Immunity, ACR, IIP2, IIP3 and AMR tests is set 3 dB above the nominal sensitivity level.
-
Symbol
Description
Conditions
Min
Typ
Max
Unit
RFS_F
FSK sensitivity, highest LNA gain
FDA = 5 kHz, BR = 1.2 kb/s FDA = 5 kHz, BR = 4.8 kb/s FDA = 40 kHz, BR = 38.4 kb/s
-
-
-
-118
-114
-105
-
-
-
dBm
dBm
dBm
FDA = 5 kHz, BR = 1.2 kb/s*
-
-120
-
dBm
RFS_O
OOK sensitivity, highest LNA gain
BR = 4.8 kb/s
-
-112
-109
dBm
CCR
Co-Channel Rejection
-13
-10
-
dB
ACR
Adjacent Channel Rejection
Offset = +/- 25 kHz
Offset = +/- 50 kHz
-37
42
42
-
-
dB dB
BI
Blocking Immunity
Offset = +/- 1MHz
Offset = +/- 2 MHz
Offset = +/- 10MHz
-
-
-
-45
-40
-32
-
-
-
dBm
dBm
dBm
Blocking Immunity
The wanted signal at sensitivity
+16dB
Offset = +/- 1MHzOffset = +/- 2 MHz Offset = +/- 10MHz
-
-
-
-36
-33
-25
-
-
-
dBm
dBm
dBm
AMR
AM Rejection, AM modulated interferer with 100% modulation depth, fm = 1 kHz, square
Offset = +/- 1MHz
Offset = +/- 2 MHz
Offset = +/- 10MHz
-
-
-
-45
-40
-32
-
-
-
dBm
dBm
dBm
IIP2
2nd order Input Intercept Point Unwanted tones are 20 MHz above the LO
Lowest LNA gain Highest LNA gain
-
-
+75
+35
-
-
dBm
dBm
IIP3
3rd order Input Intercept point Unwanted tones are 1MHz and 1.995 MHz above the LO
Lowest LNA gain Highest LNA gain
-
-23
+20
-18
-
-
dBm
dBm
BW_SSB
Single Side-channel filter BW
Programmable
2.6
-
500
kHz
IMR_OOK
Image rejection in OOK mode
Wanted signal level = -106 dBm
27
30
-
dB
TS_RE
Receiver wake-up time, from PLL locked state toRxReady
RxBw= 10 kHz, BR = 4.8 kb/s
RxBw= 200 kHz, BR = 100 kb/s
-
-
1.7
96
-
-
ms
us
TS_RE_AGC
Receiver wake-up time, from PLL locked state, AGC enabled
RxBw= 10 kHz, BR = 4.8 kb/s
RxBw= 200 kHz, BR = 100 kb/s
-
3.0
163
ms
us
TS_RE_AGC &AFC
Receiver wake-up time, from PLL lock state, AGC and AFC enabled
RxBw= 10 kHz, BR = 4.8 kb/s
RxBw= 200 kHz, BR = 100 kb/s
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More Information Subtitle N/A UPC/EAN 4604046160283 Count N/A M.R.P ₹464.00 Brand Name HopeRF Model RFM65W-868 Whoesale Available Frequency 868MHZ Color Green Modulations N/A FSK Bit rates up to 300 kb/s Demodulations FSK, GFSK, MSK, GMSK and OOK Dimension 19.7X16mm Write Your Own Review