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Teilenummer | RFM117W |
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Beschreibung | single-chip OOK transmitters | |
Hersteller | HOPERF | |
Logo | ||
Gesamt 22 Seiten Features
Embedded EEPROM
y Very Easy Development with RFPDK
y All Features Programmable
Frequency Range:
y 240 to 480 MHz (RFM110W)
y 240 to 960 MHz (RFM117W)
OOK Modulation
Symbol Rate: 0.5 to 30 ksps
Output Power: -10 to +13 dBm
Supply Voltage: 1.8 to 3.6 V
Current Consumption: 12.4 mA @ +10 dBm
Sleep Current: < 20 nA
FCC / ETSI Compliant
RoHS Compliant
Module Size:17.8*12.8*5.0mm
Descriptions
The RFM110W/RFM117W devices are ultra low-cost,
highly flexible, high performance, single-chip OOK
transmitters for various 240 to 960 MHz wireless
applications. The RFM110WA covers the frequency range
from 240 to 480
MHz while the RFM117W covers the 240 to 960 MHz
frequency range. They are part of the CMOSTEK
NextGenRFTM family, which includes a complete line of
transmitters, receivers and transceivers. With very low
current consumption, the device modulates and transmits
the data which is sent from the host MCU. An embedded
EEPROM allows the frequency, output power and other
features to be programmed into the chip using the
stock products of 433.92/868.35 MHz are available for
immediate demands without the need of EEPROM
programming.The RFM110W/RFM117W transmitter
together with the RFM21x receiver enables an ultra low
cost RF link.
RFM110W/RFM117W
RFM110W/RFM117W
Applications
Low-Cost Consumer Electronics Applications
Home and Building Automation
Remote Fan Controllers
Infrared Transmitter Replacements
Industrial Monitoring and Controls
Remote Lighting Control
Wireless Alarm and Security Systems
Remote Keyless Entry (RKE)
RFM110W/RFM117W
1.4 Crystal Oscillator
Table 6. Crystal Oscillator Specifications
Parameter
Symbol
conditions
min typ max
unit
Crystal Frequency[1]
Crystal Tolerance[2]
Load Capacitance
Crystal ESR
XTAL Startup Time[3]
Drive Level
Aging Per Year
FXTAL
CLOAD
Rm
tXTAL
26 26 26
±20
10 15 20
60
400
100
±2
MHz
ppm
pF
Ω
us
uw
ppm
Notes:
[1]. The RFM110W can directly work with external 26 MHz reference clock input to XIN pin (a coupling capacitor is
required)with peak-to-peak amplitude of 0.3 to 0.7 V.
[2]. This is the total tolerance including (1) initial tolerance, (2) crystal loading, (3) aging, and (4) temperature
dependence.The acceptable crystal tolerance depends on RF frequency and channel spacing/bandwidth.
[3]. This parameter is to a large degree crystal dependent.
6 Page RFM110W/RFM117W
Table 10. Modulation, Frequency and Symbol Rate
Parameter
Modulation
Frequency (RFM110W)
Frequency (RFM117W)
Frequency Resolution (FRF ≤ 480 MHz)
Frequency Resolution (FRF > 480 MHz)
Symbol Rate
Value
OOK
240 to 480
240 to 960
198
397
0.5 to 30
Unit
-
MHz
MHz
Hz
Hz
ksps
5.3 Embedded EEPROM and RFPDK
The RFPDK (RF Products Development Kit) is a very user-friendly software tool delivered for the user configuring the
RFM110W/RFM117W in the most intuitional way. The user only needs to fill in/select the proper value of each parameter and
click the “Burn” button to complete the chip configuration. No register access and control is required in the application program.
See the figure below for the accessing of the EEPROM and Table 11 for the summary of all the configurable parameters of the
RFM110W/RFM117W in the RFPDK.
RFM110W/RFM117W
RFPDK
EEPROM
Interface
CLK
DATA
CMOSTEK USB
Programmer
Figure 12. Accessing Embedded EEPROM
For more details of the CMOSTEK USB Programmer and the RFPDK, please refer to “AN103 CMT211xA-221xA One-Way RF
Link Development Kits Users Guide”. For the detail of RFM110W/RFM117W configurations with the RFPDK, please refer to
“AN102
RFM110W/RFM117W Configuration Guideline”.
Table 11. Configurable Parameters in RFPDK
Category
Parameters
Descriptions
Default
Mode
RF Settings
Transmitting
Settings
Frequency
(RFM110W)
Frequency
(RFM117W)
Tx Power
Xtal Cload
PA Ramping
Start by
Stop by
To input a desired transmitting radio frequency in the
range from 240 to 480 MHz. The step size is 0.001 MHz.
To input a desired transmitting radio frequency in the
range from 240 to 960 MHz. The step size is 0.001 MHz.
To select a proper transmitting output power from -10
dBm to +14 dBm, 1 dBm margin is given above +13 dBm.
On-chip XOSC load capacitance options: from 10 to 22
pF.
To control PA output power ramp up/down time, options
are 0 and 2n us (n from 0 to 10).
Start condition of a transmitting cycle, by Data Pin
Rising/Falling Edge.
Stop condition of a transmitting cycle, by Data Pin Holding
Low for 20 to 90 ms.
433.92 MHz
868.35 MHz
+13 dBm
15 pF
0 us
Data Pin
Rising Edge
Data Pin
Holding Low
for 20 ms
Basic
Advanced
Basic
Advanced
Basic
Advanced
Basic
Advanced
Advanced
Advanced
Advanced
12 Page | ||
Seiten | Gesamt 22 Seiten | |
PDF Download | [ RFM117W Schematic.PDF ] |
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