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Details, datasheet, quote on part number:DK1002T
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Datasheet text preview:
DK1002T
· Remote Keyless Entry · Wireless Security Systems · Remote Controls · Remote Monitoring
The DK1002T is the transmitter half of our remote keyless entr y system evaluation kit. It is designed to allow the user to easily and quickly demonstrate the operation of the RF2514 in a typical application. Everything needed to demonstrate a one way transmitter is included. The RF2514 is setup to demonstrate a typical keyless entry system using a rolling code encoder while operating at 868 MHz. A battery is included and the antenna is printed on the circuit board. This unit is designed to work with the mating receiver, DK1002R.
Si BJT Si Bi-CMOS
GaAs HBT SiGe HBT
GaAs MESFET Si CMOS
· Complete Transmitter · Programmable Rolling Code Encoder · Four Pushbutton Functionality · LED Indicator · Mates With DK1002R Receiver · Batter y and Antenna
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TRANSCEIVERS
Antenna RF2514 Ref VCO
PD
FTX /n
÷32 or ÷64
S1 S2 S3 S4 Rolling Code Encoder
DK1002T Available only as part of the DK1002 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
Rev A0 000606
11-43
DK1002T
Absolute Maximum Ratings Parameter
Supply Voltage Operating Ambient Temperature Storage Temperature Caution! ESD sensitive device.
Rating
-0.5 to +3.6 -40 to +85 -40 to +150
Unit
V DC °C °C
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).
Parameter
Overall
Frequency Range M odula tion Modulation Frequency Output Power ON/OFF Ratio
Specification Min. Typ. Max.
86 8 O OK 1 70 75 32 - 97 -102 35 1 3.577 25 3 .0 2.0 4 7 3. 0 9
Unit
MH z kH z dBµV/m dB
Condition
T = 25 °C, VCC =3.0 V, Freq=868MHz
Set by mode of encoder. Measured in GTEM test cell
PLL and Prescaler
Prescaler Divide Ratio PLL Phase Noise Har monics (average) Reference Frequency Cr ystal Frequency Spurs dB c/H z dB c/H z dBµV/m MH z dBµV/m V V mA 10 kHz Offset, 50kHz loop bandwidth 100 kHz Offset, 50kHz loop bandwidth Measured in GTEM test cell. Measured in GTEM test cell. S pec ific ation s Operating limits
Power Supply
Voltage Current Consumption (Avg.)
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TRANSCEIVERS
11-44
Rev A0 000606
DK1002T
Introduction The small 3V lithium button cell is installed in the back of the transmitter board by sliding the battery completely into the clip provided. The larger flat surface of the battery, marked with a "+" should be in contact with the clip, also marked with a "+" and should be facing away from the printed circuit board. It will normally require some force to insert the battery completely. When the batteries are first installed and the devices are activated, the receiver may not recognize the transmitter. This is normal and only indicates that the receiver must learn the transmitter. This is accomplished with the following procedure: 1. Install the batteries, if not already installed 2. Tur n on the receiver using the power switch as described above 3. Momentarily depress the button marked "LEARN" on the receiver. This may be accessed through an opening in the clear cover on the front of the receiver with a small tool. This will cause the LED located next to the button to be illuminated. 4. While the LED is illuminated, depress any button on the transmitter. When a button on the transmitter is depressed, the LED on the transmitter will be illuminated. Continue depressing the button on the transmitter until the LED on the receiver is no longer illuminated. Release the button on the transmitter. 5. Depress a button on the transmitter once again. Continue depressing the button until the LED on the receiver begins to flash. Release the button on the transmitter. 6. The LED on the receiver will stop flashing. The process is complete. 7. To verify proper operation, depress any button on the transmitter. An LED on the receiver should be illuminated and the LED located next to the "LEARN" button should flash. When one of the buttons on the transmitter is depressed, the buzzer will sound. The transmitter has four pushbuttons that activate the transmitter. The four buttons represent four separate functions that could be activated using the system. This evaluation board uses the Microchip encoder chip for secure transmissions. Further information about this device may be obtained from Microchip Technology Inc., Chandler, Arizona, USA. An LED is included to indicate that the device is activated and four pads are included for programming the HCS300 device. The device is preprogrammed with a dummy serial number. An antenna is printed onto the circuit board for convenience. The transmitter is simply operated by pressing any of the buttons. While the button is depressed, the LED on the transmitter is illuminated. The 868MHz transmitter uses a 13.577MHz crystal which may be identified by the label on the top of the cr ystal can. The following pages show the schematic for the 868MHz transmitter, the bill of material for the 868 MHz transmitter, the printed circuit board layout for the 868MHz transmitter. These materials, along with the Gerber files for the PCBs may be found on the Inter net at www.rfmd.com.
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TRANSCEIVERS
Rev A0 000606
11-45
DK1002T
!
(Download Bill of Materials from www.rfmd.com.)
VCC X1 13.577 MHz C2 33 pF C3 68 pF C4 1 nF D1 HLMP-Q106 R1 1 k PWR DN Printed Antenna 1 2 3 C14 2 pF L2 22 nH C12 0.1 uF R7 3.9 k R8 6.2 k C11 10 nF R6 10 VCC C10 10 nF 4 5 6 7 8 16 15 14 13 12 11 10 FLAG 9 C9 10 nF
2514403-
VCC
L1 is placed 130 mils from the edge of U1 so an 18 nH standard inductor may be used.
VCC
C5 7 pF
R3 22 k
C6 100 pF
+ B1 LITH BATT DGND VCC U2 S1 S2 S3 S4 1 S0 2 S1 3 S2 4 S3
VDD LED PWM VSS
HCS300
Components for 300 kHz loop BW (C5, C6, R3)
R4 3.0 k L1 18 nH VCC C7 0.1 uF
GND
VCC 8 7 6 5 VCC PD
VCC 4 3 2 1 P1 CON4
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TRANSCEIVERS
11-46
Rev A0 000606
DK1002T
"
!#$%&'#((&
Board Thickness 0.062", Board Material FR-4
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TRANSCEIVERS
Rev A0 000606
11-47
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