DRF2008A011 - Dorji

DRF2008A011
DRF2008A011
High Sensitivity Audio FM Receiver Module V1.00
Features
• Audio PLL receiver module
• 433/868/915Mhz ISM band
• -112dBm sensitivity @ 12dB SINAD
• Low distortion: 0.66%
• Multiple channels
• Audio response:30~30kHz
• Supply voltage: 10~16V
Application
• Car Audio /Car Speaker
• Wireless Microphone
• Ordinary sound box
DESCRIPTION
DRF2008A011 is a low-cost sub-1 GHz FM receiver module designed for operations in the
unlicensed ISM (Industrial Scientific Medical) and it aims at UHF wireless microphone
applications. The receiver module consists of BPF, LNA, 1 st Mixer1, IF filter, 2 nd MIX and IF
AMP and Demodulator circuit. Users only need to design audio signal process circuit to build a
full audio transmission system and easily apply them in mining industry and electronic consumer
system equipments.
DRF2008A011
Signal expanding
and decompressing
Figure 1: DRF2008A011 Receiver System
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DRF2008A011
PIN FUNCTIONS
Figure 2: DRF2008A011 Pin Layout
PIN Name Function Description
1 VCC Power Power supply
2 GND Ground Ground (0V)
3 RSSI Output Received signal strength indication
4 AF Output Audio demodulation output: 200±30 mV
5-9 D7-D3 Input ROM control bit (8 th ~4 th ). Logic low: suspended
Logic high: connecting to VDD
10 D2/CLK Input ROM control bit (3 rd ) / Clock input port of MCU. On the rising edge of
clock, data is input to 18-bit shift register of serial interface
11 D1/DATA Input ROM control bit (2 nd ) / Data input port of MCU. The LSB is input first and
the last two bits is group identification code.
12 D0/EN Input ROM control bit (1 st ) / Enable pin. At high level data in shift register will
be loaded in latch distinguished b group identification code.
13 ANT Output Antenna input impedance: 50Ω
14 GND Ground Ground (0V)
Table 1 DRF2008A011 Pin functions
ELECTRICAL SPECIFICATIONS
Symbol Parameter (condition) Min. Typ. Max. Units
VDD Supply Voltage 10 12 16 V
Temp Operating temperature range -10 25 65 °C
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DRF2008A011
RH Operating relative humidity 10 90 %
F RX
F OSC
Receive frequency range
433
863
914.2
437.5
864.8
915.7
MHz
MHz
MHz
322.4
326.9 MHz
Oscillator frequency range
752.4
754.2 MHz
903.5
905.0 MHz
C FREQ Crystal Frequency 20 MHz
IDD Transmitting mode @ VCC=10.0V 53 55 60 mA
Sen. Sensitivity @ 12dB SINAD -108 -112 -118 dBm
Dem Demodulation @ 1KHz audio & 20KHz Dev. 170 183 195 mV
RSSI Received signal strength indication @30dB SINAD 1.1 1.41 1.62 V
F RES Frequency response 30 30K Hz
SINAD Signal to noise and distortion ratio@ 20KHz Dev. 40 43 45 dB
SNR Signal to noise ratio@100KHz Dev. 60 dB
D MOD Distortion@ -47dBm signal strength 0.5 0.66 0.9 %
ZANT Antenna Impedance 50 Ohm
Table 2 DRF2008A011 Electrical Specifications
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Min. Max. Units
VCC Supply Voltage -0.3 16 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 DRF2008A011 Maximum Ratings
APPLICATION INFORMATION
In order to reduce the complexity of circuit, DORJI provides two types of receiver modules for
selection.
DRF2008A011R only works in ROM mode. The channel number and frequency points have been
stored in receiver module. Users can check the ROM Control Logic Table in transmitter module
(DRF2008A131) for details.
DRF2008A011M only works together with external MCU for more flexible control on channel
number and frequency points. Users can control the DRF2008A011M through 3-wire serial
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DRF2008A011
interface. As to timing sequence and command word format, please check the datasheet of
transmitter DRF2008A131.
Mechanical Data
Unit: mm
Figure 3: Mechanical Data
Ordering Information
DRF 2008 A 0 11 — 043 D
1 2 3 4 5 6 7
Num Symbol Meaning
1 Module category RF module
2 Module type 2008
3 Module Function Audio FM module
4 Communication way 0: Receiver, 1: Transmitter, 2: Transceiver
5 Sensitivity -112dBm sensitivity @ 12dB SINAD
6 Freq. Band 043: 433MHz
7 Package DIP package
Table 7 Ordering information
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DRF2008A011
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@rfmodule.me
Web: http://www.rfmodule.me
Dorji Industrial Group Co., Ltd reserves the right to
make corrections, modifications, improvements and
other changes to its products and services at any time
and to discontinue any product 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.
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