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Preliminary
RF2510
VHF/UHF TRANSMITTER
11
Typical Applications
* Local Oscillator Source * FM/FSK Transmitter * Wireless Data Transmitters
* 433/868/915MHz ISM Band Systems * Low-Cost Single Frequency LO Source * Wireless Security Systems
Product Description
The RF2510 is a monolithic integrated circuit intended for use as a low-cost Frequency Synthesizer. The device is provided in a 16 pin SSOP package and is designed to provide a phased locked frequency source for use in local oscillator or transmitter applications. The chip can be used in FM or FSK applications in the U.S. 915MHz ISM band and European 433MHz and 868MHz ISM band. The integrated VCO, dual modulus/dual divide (128/129 or 64/65) pre-scaler, and reference oscillator require only the addition of an external crystal to provide a complete phase-locked oscillator.
0.157 0.150 0.012 0.008 0.196 0.189 0.025
-A0.0098 0.0040
0.2440 0.2284
0.0688 0.0532
8 MAX 0MIN
0.050 0.016
0.0098 0.0075
NOTES: 1. Shaded lead is Pin 1. 2. All dimensions are excluding mold flash. 3. Lead coplanarity - 0.005 with respect to datum "A".
Optimum Technology Matching(R) Applied
u
Package Style: SSOP-16
Si BJT Si Bi-CMOS
GaAs HBT SiGe HBT
GaAs MESFET Si CMOS
Features
* Fully Integrated PLL Circuit * Integrated VCO and Reference Oscillator
11
TRANSCEIVERS
RESNTR+
RESNTR-
MOD IN
PD
* 2.4V to 5.0V Supply Voltage * Low Current and Power Down Capability * 300MHz to 1000MHz Frequency Range * Narrowband and Wideband FM
1 2 OSC E OSC B
13
11
12
7 DC Bias
VCO OUT
4 Prescaler 128/129 or 64/65 9 MOD CTRL 10 DIV CTRL Phase Detector & Charge Pump 14 LOOP FLT
Ordering Information
RF2510 RF2510 PCBA-L RF2510 PCBA-M RF2510 PCBA-H VHF/UHF Transmitter Fully Assembled Evaluation Board 433MHz Fully Assembled Evaluation Board 868MHz Fully Assembled Evaluation Board 915MHz Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com
Functional Block Diagram
RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA
Rev A6 010207
11-1
RF2510
Absolute Maximum Ratings Parameter
Supply Voltage Power Down Voltage (VPD) Operating Ambient Temperature Storage Temperature
Preliminary
Rating
-0.5 to +5.5 -0.5 to VCC -40 to +85 -40 to +150
Unit
VDC V C C 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).
Parameter
Overall
Frequency Range Modulation Modulation Frequency
Specification Min. Typ. Max.
300 to 1000 FM/FSK 2
Unit
MHz MHz
Condition
T=25 C, VCC =3.6V, Freq=915MHz
Modulation frequency and deviation dependent on VCO components L2, L3, C11, and D1. 50 load, no output attenuator To maintain PLL lock
Maximum FM Deviation Output Power Output Load VSWR Add 1 dB pad Add 2 dB pad Add 3 dB pad
200 -2.5 2:1 3:1 6:1 20:1 64/65 or 128/129 70 25 -72 -98 -15 17 -62 50 -40 2.0 1.0 25k 2 4 100 +40
kHz dBm
PLL and Prescaler
Prescaler Divide Ratio VCO Gain, KVCO MHz/V MHz/V dBc/Hz dBc/Hz dBc MHz dBc A V V ms Dependent upon external components, Freq=915MHz, 868Mhz Freq=433MHz 10kHz Offset, 5kHz loop bandwidth 100kHz Offset, 5kHz loop bandwidth Without filtering. 5kHz PLL loop bandwidth
PLL Phase Noise Harmonics Reference Frequency Crystal Frequency Spurs Max Crystal RS Charge Pump Current
11
TRANSCEIVERS
Power Down Control
Power Down "ON" Power Down "OFF" Control Input Impedance Turn On Time Voltage supplied to the input; device is "ON" Voltage supplied to the input; device is "OFF" Crystal start-up, 7.15MHz crystal. PLL lock time additional 4/(loop bandwidth) sec. Specifications Operating limits over temp T<+40C Sleep mode
Power Supply
Voltage 2.4 2.2 7 3.6 5 10.5 13.5 1 V V V mA A
Current Consumption
11-2
Rev A6 010207
Preliminary
Pin 1 Function OSC B Description
This pin is connected directly to the reference oscillator transistor base. The intended reference oscillator configuration is a modified Colpitts. An appropriate capacitor as chosen by the customer should be connected between pin 1 and pin 2.
RF2510
Interface Schematic
VCC2 OSC B OSC E
2 3 4
OSC E GND1 VCO OUT
This pin is connected directly to the emitter of the reference oscillator transistor. An appropriate capacitor as chosen by the customer should be connected from this pin to ground. Ground connection for the VCO OUT buffer amp. Buffered output of the VCO
See pin 1.
VCC
20 VCO OUT
5 6 7
VCC GND PD
This pin is used to supply DC bias to the entire IC. ARF Bypass capacitor should be connected directly to ground. Ground connection. Power Down control for all circuitry. When this pin is a logic "low" all circuits are turned off.
50 k PLL ENABL
8 9
NC MOD CTRL
Not internally connected. This pin is used to select the prescaler modulus. A logic "high" selects 64 or 128 for the prescaler divisor. A logic "low" selects 65 or 129 for the prescaler divisor.
MOD CTL
10
DIV CTRL
This pin is used to select the desired prescaler divisor. A logic "high" selects the 64/65 divisor. A logic low selects the 128/129 divisor.
11
DIV CTL
11
RESNTR-
The RESNTR pins are used to supply DC voltage to the VCO, as well as to tune the center frequency of the VCO. Equal value inductors should be connected to this pin and pin 13.
RESNTR+
RESNTR-
4 k MOD IN
12
MOD IN
13 14
RESNTR+ LOOP FLT
FM analog or digital modulation can be imparted to the VCO through See pin 11. this pin. The VCO varies in accordance to the voltage level presented to this pin. To set the deviation to a desired level, a voltage divider referenced to Vcc is recommended. Because the modulation varactors are part of the resonator tank, the deviation is slightly dependent upon the components used in the external tank. See pin 11. See pin 11. Output of the charge pump. An RC network from this pin to ground is used to establish the PLL bandwidth.
VCC
LOOP FLT
Rev A6 010207
11-3
TRANSCEIVERS
RF2510
Pin 15 Function VREF P Description
Bias voltage reference pin for bypassing the prescaler and phase detector. The bypass capacitor should be of appropriate size to provide filtering of the reference crystal frequency and be connected directly to this pin. Not internally connected. This diode structure is used to provide electrostatic discharge protection to 3kV using the human body model. the following pins are protected: 1, 2, 3, 5, 6, 7, 9, 10, 14, and 15.
Preliminary
Interface Schematic
16
NC ESD
VCC
PIN
11
TRANSCEIVERS
11-4
Rev A6 010207
Preliminary
Pin Out
OSC B OSC E GND1 VCO OUT VCC GND PD NC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 NC VREF P LOOP FLT RESNTR+ MOD IN RESNTRDIV CTRL MOD CTRL
RF2510
11
TRANSCEIVERS
Rev A6 010207
11-5
RF2510
Application Schematic (915MHz)
Preliminary
1 X1 7.15909 MHz 100 pF 2 100 pF 3 18 VCO OUT 270 270 VCC 22 pF 4 5 .01 uF 6 PD 7 8
OSC B OSC E GND1 VCO OUT VCC GND PD NC
NC VREF P LOOP FLT RESNTR+ MOD IN RESNTRDIV CTRL MOD CTRL
16 33 nF 15
Loop BW = 5 kHz 1.2k 100 nF 10 nF
14 4.7 nH 13 5 pF 12 D1 11 4.7 nH 10 9 DIV CTRL MOD CTRL MOD IN 22 pF .01 uF 10 k 10 VCC
D1 : SMV1233-011
Application Schematic (915MHz)
RF2510 Audio Transmitter
11
TRANSCEIVERS
47 k AUDIO 22 pF D2 100 pF 3 18 VCO OUT 270 270 VCC 22 pF .1 uF 6 PD 7 8 GND PD NC RESNTR- 11 4.7 nH DIV CTRL 10 MOD CTRL 9 DIV CTRL MOD CTRL 4 5 VCO OUT VCC RESNTR+ 13 5 pF MOD IN 12 D1 22 pF .1 uF 10 k 10 GND1 LOOP FLT 14 4.7 nH VCC 100 pF 2 OSC E VREF P 15 10 nF X1 7.15909 MHz 1 OSC B NC 16 33 nF 1.2 k 100 nF Loop BW = 5 kHz
D1, D2 : SMV1233-011
11-6
Rev A6 010207
Preliminary
Evaluation Board Schematic 433 MHz
(Download Bill of Materials from www.rfmd.com.)
P1 P1-1 1 2 P1-3
2510400, Rev B
RF2510
P2 PD GND VCC P2-3 P2-1 1 2 3 CON3 C8 33 nF DIV CTRL GND MOD CTRL
3 CON3
R8* C17* C16* 8 pF C18 3-10 pF
X1 6.78 MHz C1 100 pF C2 100 pF 1 2 16 15 Phase Detector & Charge Pump 14 13 12 11 DC Bias Prescaler 128/129 or 64/65 10 9
C9 4.7 nF R2 3.9 k
R3 2 k
C10 47 nF
J1 VCO OUT
50 strip C19 8 pF
L4 22 nH C5 15 pF
L1 22 nH C4 8 pF R6 270 R1 10
C3 100 pF R7 270
3 4
L2 27 nH VCC C11 3 pF D1 SMV1233 -011 L3 27 nH 50 strip C13 22 pF C12 .01 uF R4 10 C15 4.7 F J2 MOD IN DIV CTRL MOD CTRL
R5 18
5 6
VCC C14 + 4.7 F PD C7 .01 uF C6 22 pF
7 8
11
TRANSCEIVERS
Rev A6 010207
11-7
RF2510
Evaluation Board Schematic 868 MHz
P1 P1-1 1 2 P1-3
2510401, Rev B
Preliminary
P2 PD GND VCC P2-3 P2-1 1 2 3 CON3 C8 33 nF DIV CTRL GND MOD CTRL
3 CON3
R8* C17* C16* 8 pF
X1 13.577344 MHz C18 3-10 pF C2 100 pF C1 100 pF 1 2 16 15 Phase Detector & Charge Pump 14 13 12 11 DC Bias Prescaler 128/129 or 64/65 10 9
C9 10 nF R2 3.9 k
R3 0.750 k
C10 100 nF
J1 VCO OUT
50 strip C5 6 pF
L1 6.8 nH C4 6 pF R6 270 R1 10
C3 100 pF R7 270
3 4
L2 4.7 nH VCC C11 5 pF D1 SMV1233 -011 L3 4.7 nH 50 strip C13 22 pF C12 .01 uF R4 10 C15 4.7 F J2 MOD IN DIV CTRL MOD CTRL
R5 18
5 6
VCC C14 + 4.7 F PD C7 .01 uF C6 22 pF
7 8
Evaluation Board Schematic 915 MHz
P1 P1-1 1 2 PD GND VCC P2-3 P2-1 P2 1 2 3 CON3 C8 33 nF C1 100 pF C2 100 pF 1 2 C3 100 pF R7 270 3 4 C5 6 pF C4 6 pF R6 270 R1 10 VCC C14 + 4.7 F PD C7 0.1 uF C6 22 pF R5 18 5 6 7 8 DC Bias Prescaler 128/129 or 64/65 Phase Detector & Charge Pump 16 15 14 13 12 11 10 9 D1 SMV1233 -011 L3 4.7 nH 50 strip C13 22 pF C12 0.1 uF C15 4.7 F J2 MOD IN DIV CTRL MOD CTRL R2 3.9 k L2 4.7 nH VCC C11 5 pF R4 10 C9 10 nF C10 100 nF DIV CTRL GND MOD CTRL
11
2510402, Rev B
P1-3
3 CON3
TRANSCEIVERS
R8* C17* C16* 8 pF C18 3-10 pF
X1 7.15909 MHz
R3 1.2 k
J1 VCO OUT
50 strip
L1 6.8 nH
11-8
Rev A6 010207
Preliminary
Evaluation Board Layout 433MHz Board Size 1.500" x 1.000"
Board Thickness 0.031", Board Material FR4
RF2510
Evaluation Board Layout 868MHz Board Size 1.500" x 1.000"
Rev A6 010207
11-9
TRANSCEIVERS
Evaluation Board Layout 915MHz Board Size 1.500" x 1.000"
11
RF2510
Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 3.0 V
500.0 Freq. Dev. (KHzp-p) 450.0 500.0 400.0 600.0 Freq. Dev. (KHzp-p)
Preliminary
Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 4.0 V
Freq. Deviation (kHz p-p)
350.0 300.0 250.0 200.0 150.0 100.0
Freq. Deviation (kHz p-p)
400.0
300.0
200.0
100.0 50.0 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.0 1.0 2.0 3.0 4.0 5.0
Signal Level (V)
Signal Level (V)
Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 5.0 V
700.0 Freq. Dev. (KHzp-p) 600.0 -10.0 0.0
Output Power and ICC versus Voltage, Freq = 915 MHz, with 3dB Attenuator
16.0
14.0
Freq. Deviation (kHz p-p)
500.0
-20.0
12.0
-30.0 400.0
10.0
POUT (dBm)
-40.0
8.0
300.0
-50.0 200.0 -60.0
6.0
4.0 -40C Pout +25C Pout +85C Pout -40C Icc +25C Icc
11
TRANSCEIVERS
100.0
-70.0
2.0
0.0 0.0 1.0 2.0 3.0 4.0 5.0
-80.0 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
0.0
Signal Level (V)
Supply Voltage (Volts)
11-10
Rev A6 010207
ICC (mA)

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