DK1000R 16 315MHZ REMOTE KEYLESS ENTRY RECEIVER Typical Applications • Remote Keyless Entry • Remote Monitoring • Wireless Security Systems • Remote Controls Product Description The DK1000R is the receiver half of our remote keyless entry system evaluation kit. It is designed to allow the user to easily and quickly demonstrate the operation of the RF2919 in a typical application. Everything needed to demonstrate a one way receiver is included. The RF2919 is setup to demonstrate a typical keyless entry system using a rolling code decoder while operating as an FCC15.231 type device at 315MHz. A battery is included and the antenna is printed on the circuit board. This unit is designed to work with the mating transmitter, DK1000T. Optimum Technology Matching® Applied ü Si BJT GaAs HBT GaAs MESFET Si Bi-CMOS SiGe HBT Si CMOS Features • Complete Receiver Antenna • Programmable Rolling Code Decoder IF Filter • LED and Buzzer Indicators Rolling Code Decoder RSSI T1 S1 S2 S3 • Mates with DK1000T Transmitter • Battery and Antenna ÷64/65 or ÷128/129 RF2919 DK1000R DK1000R Functional Block Diagram Rev A2 020109 16 Ordering Information 315MHz Remote Keyless Entry Receiver Available only as part of the DK1000 Reference Design Kit RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 16-11 REF. DESIGNS & DESIGN KITS FRX /n DK1000R Absolute Maximum Ratings Parameter Ratings Unit Supply Voltage Input RF Level Output Load VSWR Operating Ambient Temperature Storage Temperature 3.3 to 9.0 +10 50:1 -40 to +85 -40 to +150 VDC dBm Parameter °C °C Specification Min. Typ. Max. Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). Unit T=25 °C, VCC =3.3V (regulated), Freq=315MHz Overall RF Frequency Range Reference Frequency RX Sensitivity LO Leakage Condition -100 315 4.748 -104 -70 MHz MHz dBm dBm 9.0 20.0 V mA IF BW =150kHz, Freq=915MHz, S/N=8dB Power Supply Voltage Current Consumption 3.3 9.0 13.0 9V to 3.3V regulated supply REF. DESIGNS & DESIGN KITS 16 16-12 Rev A2 020109 DK1000R DK1000R Theory of Operation and Application Information The 9V battery is installed in the back of the receiver by sliding open the battery door located below the moveable stand. The battery is clipped into the connector provided, placed in the compartment, and the battery door replaced. The receiver is activated by moving the small lever switch to the "ON" position. The power switch may be accessed through an opening in the clear cover on the front of the receiver with a small tool. When the receiver is turned on the LED marked "POWER" will be illuminated. Turning the receiver off when not in use will extend battery life. OPERATION The receiver is operated by first turning on the power as described previously. The LEDs may be observed to be illuminated corresponding to the button that is being depressed on the transmitter. The LED on the receiver will be illuminated indicating that the power is on. The "LEARN" LED will flash while the receiver is decoding a transmitted signal. The buzzer will be activated indicating that the corresponding button is being depressed on the transmitter. The stand on the back of the receiver may be extended by lifting up on the upper portion of the stand (marked "1" on the case) and pulling out the bottom portion of the stand. The receiver may then be placed for easy viewing while operating the transmitter. The receiver uses the HCS512 decoder from Microchip. Four pads are included for programming this device. It is preprogrammed to operate in the desired manner for this application. Additional information about this device may be obtained from the manufacturer. The 315 MHz receiver uses a 4.748 MHz crystal which may be identified by the label on the top of the crystal can. The following pages show the schematic for the 315 MHz receiver, the bill of material for the 315 MHz receiver, the printed circuit board layout for the 315 MHz receiver. These materials, along with the Gerber files for the PCBs may be found on the Internet at www.rfmd.com. The receiver has one lever switch for turning the power on and off and one pushbutton used in learning the transmitter. There are five LEDs on the receiver PCB. One of the LEDs indicates that the receiver is activated (power on). Another LED is used during the process of learning the transmitter and flashes during normal operation while receiving a signal. The three LEDs marked "S1", "S2", and "S3" are illuminated as corresponding buttons are depressed on the transmitter. The buzzer is activated by pressing the fourth button on the transmitter. The remaining LED, marked "VLOW" is illuminated to indicate a low battery condition. This indicates the need to replace the battery. An antenna is printed onto the PCB for convenience. REF. DESIGNS & DESIGN KITS 16 Rev A2 020109 16-13 DK1000R Evaluation Board Schematic 315MHz (Download Bill of Materials from www.rfmd.com.) VCC C20 10 nF L6 1 uH C21 220 pF C22 220 pF Y1 4.748 MHz R2 3.9 kΩ C9 2.2 nF L1 39 nH R1 5.6 kΩ C12 100 pF C11 100 pF VCC VCC R4 10 kΩ L2 39 nH C10 9.0 pF DATA P1* 1 CLK 2 3 MCLR D1 SMV1233-011 4 CON4 VCC S5 LEARN BUTTON VCC E1 Antenna 32 C13 100 pF 31 30 29 28 27 26 25 U1 24 2 23 VCC L4 39 nH R10 1 kΩ LED R14 51 kΩ 21 L3 6.8 uH C18 15 pF VCC 5 20 6 19 7 18 8 17 9 10 11 12 13 14 15 C2 10 nF R8 1 kΩ 16 R12 1 kΩ 2919403 Rev. B F2 C5 10 nF C6 10 nF C7 10 nF C1 10 nF R7 1 kΩ 30 V DC MAX 3 NC 4 MCLR 5 GND 6 S0 7 8 9 RF IN 18 NC 17 OSCIN 16 OSCOUT 15 R5 10 kΩ VCC C19 10 pF VDD 14 VCC DATA 13 DATA S1 CLK 12 CLK S2 SLEEP 11 S3 VLOW 10 R11 1 kΩ T1 POS 1 U3 LM3480 3 SFECA10.7MS3-A-TC LRN OUT S4 Switch C24 1 uF SFECA10.7MS3-A-TC f0 = 10.7 MHz BW = 180 kHz F1 LRN IN 2 2 GND 1 P2 CON2 1 VCC C3 10 nF C17 22 pF U2 LEARN C25 1 nF MCLR C15 9.0 pF R3 510 Ω R13 100 kΩ C4 1 uF 22 4 C14 220 pF CLK R6 10 kΩ 50 Ω µstrip 3 C8 10 nF VCC 1 IN OUT 2 2 1 NEG S1 LED S2 LED S3 LED VLOW LED BUZZER VCC C23 1 uF POWER LED R15 1 kΩ REF. DESIGNS & DESIGN KITS 16 16-14 Rev A2 020109 DK1000R Evaluation Board Layout Board Size 2.287" x 2.361" Board Thickness 0.062”, Board Material FR-4 REF. DESIGNS & DESIGN KITS 16 Rev A2 020109 16-15 DK1000R REF. DESIGNS & DESIGN KITS 16 16-16 Rev A2 020109