AM SUPERHETERODYNE RECEIVER AM-RRQ3-XXXCTC AM-RRQ8-433CTC • • • • • • • • • Compact Hybrid Module. Ceramic Substrate Very High Frequency Stability Receiving Range Up To 100 Metres. CMOS/TTL Compatible Output. Single Supply Voltage 5V. Compatible with R.F. Solutions AM Transmitters. Compliant to ETS300-220 RRQ3 Version • • • • • Sleep Mode Sensitivity Typically –107 dBm 315 / 433 / 868MHz Available Protective Conformal Coating RRQ8 Version • • • Front End SAW Filter Option Sensitivity Typically –113 dBm Improved Image Rejection Description The RF Solutions AM Superheterodyne Receivers are compact modules, which can be used to capture undecoded data from any equivalent AM Transmitter, such as R.F. Solutions AM-RT40 range of transmitters. (See AM Transmitter datasheet). Receivers are manufactured on a ceramic substrate, the RRQ3 incorporates an LC Filter, pre amplifier front end and PLL Synthesizer for high sensitivity and reduced EMC emissions. The RRQ8 incorporates an optional SAW Filter to provide a further increase in the module sensitivity. The modules show a very high frequency stability over a wide operating temperature even when subjected to mechanical vibrations or manual handling offering a very cost effective solution. Block diagram Vcc Input FILTER MIXER Vcc IF FILTER AM DEMODULATOR COMPARATOR O/P GND DS015-5 Jan 12 PLL Synthesizer 2012 REG No 277 4001, England. GND GND Page 1 AM SUPERHETERODYNE RECEIVER AM-RRQ3-XXXCTC AM-RRQ8-433CTC AM-RRQ3 Mechanical Dimensions 38.1mm 4mm Component Side 1 3 7 Notes Pins on 0.1" pitch Pin Dims :0.25 x 0.50mm 14.5mm 11 15 1mm 2.54mm Pin Descriptions RSSI Output RRQ3 Pin No 1 2 3 7 11 12 13 14 RF In (dBm) -120 -110 -100 -90 -80 -70 -60 -50 -40 Pin Name +Vcc GND DATA IN (Antenna) GND GND +Vcc RSSI (output) DATA OUT PD (Power Down input) 0 = Standby Mode (Istandby100nA max) 5V = Normal Operation 15 RSSI (V) 1.20 1.32 1.50 1.78 2.06 2.35 2.62 2.72 2.75 Electrical Characteristics Ambient temperature = 25oC. Electrical Characteristics Min Typical Max Dimension Supply Voltage (Vcc) Supply Current Receiver Frequency 315MHz variants Receiver Frequency 433MHz variants Receiver Frequency 868MHz variants Low Level Output Voltage (I=10uA) High Level Output Voltage (I=200uA) Operating Temperature Range R.F Sensitivity (100% AM) at 315 / 433MHz R.F Sensitivity (100% AM) at 868MHz 3dB Bandwidth Max Data Rate Level of Emitted Spectrum 4.5 5 5 315 433.92 868.35 5.5 6 V mA MHz MHz MHz V V o C dBm dBm KHz KHz dBm DS015-5 Jan 12 0.8 Vcc-1 -25 2012 REG No 277 4001, England. +80 -106 -101 +/-150 4.8 -70 Page 2 AM SUPERHETERODYNE RECEIVER AM-RRQ3-XXXCTC AM-RRQ8-433CTC AM-RRQ8 Mechanical Dimensions 14.5 36.5 Notes All dims in mm Pins on 2.54 pitch Pin Dia 0.5mm All Dims +/-0.5mm AM-RRQ8-433CTC 1 2 4 5 6 7 1 3 3 CL Pin Descriptions RRQ8 Pin No 1 2 3 4 5 6 7 Pin Name GND DATA IN (Antenna) GND AGC Control(0=ON, 1=OFF) RSSI (output) DATA OUT +Vcc Electrical Characteristics Ambient temperature = 25oC. Electrical Characteristics Min Typical Max Dimension Supply Voltage (Vcc) Supply Current Receiver Frequency 433MHz variants Low Level Output Voltage (I=10uA) High Level Output Voltage (I=200uA) Operating Temperature Range R.F Sensitivity (100% AM) 3dB Bandwidth Max Data Rate Level of Emitted Spectrum 4.5 5 7.5 433.92 5.5 9 V mA MHz V V o C dBm KHz KHz dBm 0.8 Vcc-1 -25 -110 +80 -113 +/-150 4.8 -60 Automatic Gain control (AGC) Applying a Logic Low into this pin activates the internal AGC circuit. Using AGC enables the receiver module to operate with maximum efficiency when receiving an RF data input within the -114 to 0dBm range. Applying a logic high into this pin disables the internal AGC circuit and the receiver module is forced to maximum sensitivity regardless of the input signal level. If the RF data input signal is below the threshold for valid data, then the module will operate within its linear region. If the RF data input is a higher level then the receiver will operate in a saturated mode. This can be useful to determine if the transmitter is within close proximity to the receiver module. DS015-5 Jan 12 2012 REG No 277 4001, England. Page 3 AM SUPERHETERODYNE RECEIVER AM-RRQ3-XXXCTC AM-RRQ8-433CTC Received Signal Strength Indication (RSSI) Fig 1 shows the RSSI output voltage relative to the received RF data input level. This characteristic was generated with a modulated AM signal with 99% modulation of a 1KHz square wave. The RSSI pin also had a 10uF capacitor to GND. The RSSI output is linear where the RF Data input is upto -40dBm after which it flattens off at approx 2.2V (saturation level). In the linear region the RSSI output is proportional to RF Data input power and may be used as a measure of received signal strength. When the RSSI output flattens it no longer represents a output proportional to the RF Data input. This region of the curve can be used to confirm the close proximity of the transmitter DS015-5 Jan 12 2012 REG No 277 4001, England. Page 4 AM SUPERHETERODYNE RECEIVER AM-RRQ3-XXXCTC AM-RRQ8-433CTC Application Circuit Vcc 15KΩ Ω 1KΩ Ω 13 RRQ5 RF Rece ive r 12 3 7 11 L 15 Status LED Option Link 14 4 17 Sleep Vcc Vcc OP1 12 LKIN OP2 M O/P 1 18 O/P 2 1 O/P 3 OP3 OP4 10 LRN RF600D 1KΩ Ω LB SD1 Learn Switch 9 ECLK IN 2 O/P 4 3 Transmitter Low Battery Serial Data Output 11 7 GND 5 22KΩ Ω Notes Do not use Veroboad or Stripboard to mount the module! Ensure the supply is stable (ideally <10mVpk ripple). Keep the module away from other EMF generating components. Mount the antenna as close to the module as possible. Part numbering AM-RRQ3-315 AM-RRQ3-433CTC AM-RRQ3-868 AM-RRQ8-433 Receiver Module 315MHz Receiver Module 433MHz (conformally Coated) Receiver Module 868MHz Receiver Module, SAW Filter, 433MHz Should you require further assistance, please call: R. F. Solutions Ltd., Unit 21, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England. Tel +44 (0)1273 898 000. Fax +44 (0)1273 480 661. Email [email protected] http://www.rfsolutions.co.uk RF Solutions is a member of the Low Power Radio Association. Information contained in this document is believed to be accurate , however no representation or warranty is given and no liability is assumed by R.F. Solutions Ltd. with respect to the accuracy of such information. Use of R.F.Solutions as critical components in life support systems is not authorised except with express written approval from R.F.Solutions Ltd. DS015-5 Jan 12 2012 REG No 277 4001, England. Page 5