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RFM117W Schematic ( PDF Datasheet ) - HOPERF

Teilenummer RFM117W
Beschreibung single-chip OOK transmitters
Hersteller HOPERF
Logo HOPERF Logo 




Gesamt 22 Seiten
RFM117W Datasheet, Funktion
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) 
 
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RFM117W Datasheet, Funktion
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 
 
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. 
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RFM117W pdf, datenblatt
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
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