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Revision 1.10 Page of 6 Sep. 2011 DRF4431F13 13dBm ISM RF Transceiver Module V 1 . 1 0 Features:
Applications
Frequency Range: 433/868MHz Modulation: FSK/GFSK/OOK SPI Data Interface Sensitivity: -121dBm Output Power: +13dBm Data Rate: -0.123~256 kbps Digital RSSI Wake-up Timer 64 bytes TX/RX FIFOs Integrated V oltage Regulator Frequency Hopping Capability Temperature sensor and 8-bit ADC Working Temperature: -20°C ~+60°C Standby current: ≤ 1uA Supply voltage: 1.8~3.6V Remote Control Remote AMR Home Automation Personal data logger Wireless sensor network Remote Keyless entry Wireless PC peripherals
DESCRIPTION
DRF4431F13 is a type of low cost RF front-end transceiver module based on SI4431 from Silicon labs. It keeps all the advantages of RFIC SI4431 but simplifies the circuit design. The high sensitivity (-121dBm) and 13dBm output power make the module suitable for most short range applications. DRF4431F13 module consists of RFIC Si4431, thin SMD crystal and antenna matching circuit. The antenna port is well matched to standard 50 Ohm impedance. Users don’t need to spend time in RF circuit design and choose suitable antennas for different applications. DORJI also provides SMA connector and high gain antenna for longer communication distance. DRF4431D13 operates at 1.8~3.6V with extra low standby current which makes it suitable for battery powered-up applications. DORJI also provides high power module DRF4431F13 with 500mW output power, which provides users high flexible in designing products for different distances.
Revision 1.10 Page of 6 Sep. 2011 PIN FUNCTIONS Figure 1: DRF4431F13 Pin Layout PIN Name Function Description
1 GND Ground Ground (0V)
2 GPIO0 Input/Output
3 GPIO1 Input/Output
4 GPIO2 Input/Output
General Purpose Digital I/O which can be functioned as: Microcontroller Clock Output, FIFO status, POR, Wake-Up timer, Low Battery Detect, TRSW, Ant Diversity control 5 VCC Power +3.3V
6 SDO Output SPI data output pin
7 SDI Input SPI data input pin
8 SCLK Input SPI data clock pin
9 nSEL Input SPI select pin 10 nIRQ Onput Interrupt status output pin
11 SDN Input Shutdown Input pin
12 GND Ground Ground (0V)
13 Ant Output 50 Ohm Impedance
14 GND Ground Ground (0V)
Table 1: DRF4431F13 Pin Functions
Revision 1.10 Page of 6 Sep. 2011 ELECTRICAL SPECIFICATIONS Symbol Parameter (condition) Min. Typ. Max. Units VCC Supply V oltage 1.8 3.3 3.6 V Temp Operating temperature range -20 25 60 °C Freq Frequency range 428 863 433 868 438 873 MHz FDEV Modulation deviation @433MHz @868MHz ±0.625 ±0.625 --- --- ±160 ±320 KHz RESRSSI RSSI resolution ±0.5 dB IDD_R Current in receive mode @ 433Mhz @868Mhz 18.5 18.5 mA IDD_T ⑴ Current in transmit mode @ 433Mhz @ 868Mhz mA IDD_S Current in sleep mode. 1 uA Pout Max. output power @ 433Mhz @ 868Mhz dBm Sen. (2) Receiver sensitivity @ 433Mhz @ 868Mhz -121 -121 -117 -117 dBm DRFSK FSK data rate 0.123 256 Kbps CHBW Receiver channel spacing 2.6 --- 620 kHz ZANT Antenna Impedance 50 Ohm Table 2: DRF4431F13 Electrical Specifications Notes: (1) Transmit current is tested at the Max. output power. (2) Sensitivity is measured at DRFSK =1.2k bps and FDEV =30 kHz ABSOLUTE MAXIMUM RATINGS Symbol Parameter Min. Max. Units VCC Supply V oltage -0.3 3.6 V VI Input voltage -0.3 VCC+0.3 V VO Output voltage -0.3 VCC+0.3 V TST Storage temperature -55 125 °C Table 3: DRF4431F13 Maximum Ratings
Revision 1.10 Page of 6 Sep. 2011 TYPICAL APPLICATION CIRCUIT Figure 2: Application Circuit
Revision 1.10 Page of 6 Sep. 2011 MECHANICAL DATA Figure 3: Mechanical Dimension
ORDERING INFORMATION
DRF 4431 F 13 — 043 S ①② ③ ④ ⑤ ⑥ Num Symbol Meaning ① RF module RF FSK/GFSK module ② IC Type SI4431 ③ Module Function RF front-end module ④ Power 13dBm output power ⑤ Freq. Band 043: 433MHz 086:868MHz ⑥ Package S: SMD package; D: DIP package Table 4: Ordering Information
Revision 1.10 Page of 6 Sep. 2011 Dorji Applied Technologies A division of Dorji Industrial Group Co., Ltd Add.: Xinchenhuayuan 2, Dalangnanlu, Longhua, Baoan district, Shenzhen, China 518109 Tel: 0086-755-28156122 Fax.: 0086-755-28156133 Email: sales@dorji.com Web: http://www.dorji.com Dorji Industrial Group Co., Ltd reserves the right to make corrections, modifi cations, improvements and other changes to its products and services at any time and to discontinue any pr oduct or service without notice. Customers are expected to visit websites for getting newest product information before placing orders. These products are not designed for use in life support appliances, devices or other products where malfunction of these products might result in personal injury. Customers using these products in such applications do so at their own risk and agree to fully indemnify Dorji Industrial Group for any damages resulting from improper use.