RF2510 Preliminary 11 VHF/UHF TRANSMITTER Typical Applications • Local Oscillator Source • 433/868/915MHz ISM Band Systems • FM/FSK Transmitter • Low-Cost Single Frequency LO Source • Wireless Data Transmitters • 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. 0.0098 0.0040 0.012 0.008 0.196 0.189 0.025 0.0688 0.0532 0.2440 0.2284 8° MAX 0°MIN 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". Package Style: SSOP-16 Si BJT GaAs HBT GaAs MESFET Si Bi-CMOS SiGe HBT Si CMOS 11 Features MOD IN 11 12 • 2.4V to 5.0V Supply Voltage PD RESNTR+ 13 • Integrated VCO and Reference Oscillator 7 • Low Current and Power Down Capability DC Bias • 300MHz to 1000MHz Frequency Range 4 10 DIV CTRL MOD CTRL 9 • Narrowband and Wideband FM Phase Detector & Charge Pump 14 1 Functional Block Diagram Rev A6 010207 OSC B 2 OSC E Prescaler 128/129 or 64/65 LOOP FLT VCO OUT RESNTR- • Fully Integrated PLL Circuit 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 RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 11-1 TRANSCEIVERS Optimum Technology Matching® Applied ü -A- 0.157 0.150 RF2510 Preliminary Absolute Maximum Ratings Parameter Supply Voltage Power Down Voltage (VPD) Operating Ambient Temperature Storage Temperature Parameter Rating Unit -0.5 to +5.5 -0.5 to VCC -40 to +85 -40 to +150 VDC V °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 =3.6V, Freq=915MHz Overall Frequency Range Modulation Modulation Frequency Maximum FM Deviation Output Power Output Load VSWR Add 1 dB pad Add 2 dB pad Add 3 dB pad Condition 300 to 1000 FM/FSK MHz 2 200 MHz kHz dBm -2.5 2:1 3:1 6:1 20:1 Modulation frequency and deviation dependent on VCO components L2, L3, C11, and D1. 50Ω load, no output attenuator To maintain PLL lock PLL and Prescaler Prescaler Divide Ratio VCO Gain, KVCO 64/65 or 128/129 70 25 -72 -98 -15 PLL Phase Noise TRANSCEIVERS 11 Harmonics Reference Frequency Crystal Frequency Spurs Max Crystal RS Charge Pump Current 17 -62 50 -40 100 +40 MHz/V MHz/V dBc/Hz dBc/Hz dBc MHz dBc Ω µA 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 Power Down Control Power Down “ON” Power Down “OFF” Control Input Impedance Turn On Time 2.0 1.0 25k 2 4 V V Ω ms Voltage supplied to the input; device is “ON” Voltage supplied to the input; device is “OFF” V V V mA µA Specifications Operating limits over temp T<+40°C Crystal start-up, 7.15MHz crystal. PLL lock time additional 4/(loop bandwidth) sec. Power Supply Voltage Current Consumption 11-2 3.6 2.4 2.2 7 5 10.5 13.5 1 Sleep mode Rev A6 010207 RF2510 Preliminary Pin 1 Function OSC B 2 OSC E 3 4 GND1 VCO OUT 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. 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. Interface Schematic VCC2 OSC B OSC E See pin 1. Buffered output of the VCO VCC 20 VCO OUT VCC 6 7 GND PD 8 9 NC MOD CTRL 10 DIV CTRL 11 RESNTR- 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 kΩ PLL ENABL 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. 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. 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. MOD CTL 11 DIV CTL RESNTR+ TRANSCEIVERS 5 RESNTR- 4 kΩ 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 RF2510 Pin 15 Function VREF P 16 NC ESD Preliminary Description Interface Schematic 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. VCC PIN TRANSCEIVERS 11 11-4 Rev A6 010207 RF2510 Preliminary Pin Out OSC B 1 16 NC OSC E 2 15 VREF P GND1 3 14 LOOP FLT VCO OUT 4 13 RESNTR+ VCC 5 12 MOD IN GND 6 11 RESNTR- PD 7 10 DIV CTRL NC 8 9 MOD CTRL TRANSCEIVERS 11 Rev A6 010207 11-5 RF2510 Preliminary Application Schematic (915MHz) 1 X1 7.15909 MHz NC OSC B Loop BW = 5 kHz 16 100 pF 33 nF 2 OSC E 3 4 VREF P 15 GND1 LOOP FLT 14 VCO OUT RESNTR+ 13 1.2kΩ 100 nF 100 pF 10 nF 18 Ω 4.7 nH VCO OUT 270 Ω VCC 270 Ω 5 pF 22 pF 5 .01 uF VCC MOD IN 12 6 GND RESNTR- 11 VCC 10 kΩ 10 Ω D1 22 pF .01 uF 4.7 nH PD 7 PD DIV CTRL 10 DIV CTRL 8 NC MOD CTRL 9 MOD CTRL MOD IN D1 : SMV1233-011 Application Schematic (915MHz) RF2510 Audio Transmitter TRANSCEIVERS 11 47 kΩ X1 7.15909 MHz Loop BW = 5 kHz AUDIO 22 pF 1 OSC B NC 16 2 OSC E VREF P 15 3 GND1 LOOP FLT 14 4 VCO OUT RESNTR+ 13 100 pF D2 33 nF 1.2 kΩ 100 nF 100 pF 10 nF 18 Ω 4.7 nH VCO OUT 270 Ω VCC 270 Ω VCC 5 pF 22 pF 5 VCC MOD IN 12 6 GND RESNTR- 11 .1 uF 10 kΩ 10 Ω D1 22 pF .1 uF 4.7 nH PD 7 PD 8 NC DIV CTRL 10 MOD CTRL 9 DIV CTRL MOD CTRL D1, D2 : SMV1233-011 11-6 Rev A6 010207 RF2510 Preliminary Evaluation Board Schematic 433 MHz (Download Bill of Materials from www.rfmd.com.) P2 P1 P1-1 P1-3 2510400, Rev B J1 VCO OUT 50 Ω µstrip C19 8 pF L4 22 nH C5 15 pF C16* 8 pF C18 3-10 pF C2 100 pF R6 270 Ω R5 18 Ω VCC PD GND 3 VCC P2-3 1 DIV CTRL 2 GND 3 MOD CTRL CON3 C8 33 nF C1 100 pF R1 10 Ω C14 + 4.7 µF 2 P2-1 CON3 L1 22 nH C4 8 pF PD X1 6.78 MHz R8* C17* 1 C7 .01 uF C6 22 pF C3 100 pF R7 270 Ω 1 16 2 15 3 Phase Detector & Charge Pump 14 C9 4.7 nF R2 3.9 kΩ R3 2 kΩ C10 47 nF L2 27 nH VCC 4 13 5 12 6 11 D1 SMV1233 -011 10 L3 27 nH 7 8 DC Bias Prescaler 128/129 or 64/65 C11 3 pF R4 10 Ω C13 22 pF C12 .01 uF C15 4.7 µF 50 Ω µstrip 9 J2 MOD IN DIV CTRL MOD CTRL TRANSCEIVERS 11 Rev A6 010207 11-7 RF2510 Preliminary Evaluation Board Schematic 868 MHz P2 P1 P1-1 P1-3 2 GND 3 VCC P2-1 P2-3 1 GND 3 MOD CTRL CON3 C8 33 nF C18 3-10 pF C1 100 pF 16 1 50 Ω µstrip C5 6 pF C2 100 pF L1 6.8 nH C4 6 pF R6 270 Ω R5 18 Ω C3 100 pF R7 270 Ω R1 10 Ω VCC C14 + 4.7 µF C7 .01 uF C6 22 pF Phase Detector & Charge Pump 3 R2 3.9 kΩ 14 R3 0.750 kΩ C10 100 nF L2 4.7 nH VCC 4 13 5 12 6 11 D1 SMV1233 -011 10 L3 4.7 nH DC Bias 7 8 PD C9 10 nF 15 2 J1 VCO OUT DIV CTRL 2 X1 13.577344 MHz R8* C16* 8 pF PD CON3 2510401, Rev B C17* 1 Prescaler 128/129 or 64/65 C11 5 pF R4 10 Ω C13 22 pF C12 .01 uF C15 4.7 µF 50 Ω µstrip 9 J2 MOD IN DIV CTRL MOD CTRL Evaluation Board Schematic 915 MHz P1 P1-1 11 P1-3 P2 1 PD 2 GND 3 VCC P2-1 P2-3 CON3 1 DIV CTRL 2 GND 3 MOD CTRL CON3 TRANSCEIVERS 2510402, Rev B C17* C16* 8 pF C8 33 nF X1 7.15909 MHz R8* C18 3-10 pF C1 100 pF 1 16 2 J1 VCO OUT 50 Ω µstrip C5 6 pF C2 100 pF L1 6.8 nH C4 6 pF R6 270 Ω R5 18 Ω R1 10 Ω VCC C14 + 4.7 µF PD C7 0.1 uF C6 22 pF C3 100 pF R7 270 Ω 3 C9 10 nF R3 1.2 kΩ C10 100 nF 15 Phase Detector & Charge Pump 14 R2 3.9 kΩ L2 4.7 nH VCC 4 13 5 12 6 11 D1 SMV1233 -011 10 L3 4.7 nH 7 8 DC Bias Prescaler 128/129 or 64/65 C11 5 pF R4 10 Ω C13 22 pF C12 0.1 uF C15 4.7 µF 50 Ω µstrip 9 J2 MOD IN DIV CTRL MOD CTRL 11-8 Rev A6 010207 RF2510 Preliminary Evaluation Board Layout 433MHz Board Size 1.500” x 1.000” Board Thickness 0.031”, Board Material FR4 Evaluation Board Layout 868MHz Board Size 1.500” x 1.000” 11 Rev A6 010207 TRANSCEIVERS Evaluation Board Layout 915MHz Board Size 1.500” x 1.000” 11-9 RF2510 Preliminary Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 3.0 V Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 4.0 V 600.0 500.0 Freq. Dev. (KHzp-p) Freq. Dev. (KHzp-p) 450.0 500.0 Freq. Deviation (kHz p-p) Freq. Deviation (kHz p-p) 400.0 350.0 300.0 250.0 200.0 150.0 400.0 300.0 200.0 100.0 100.0 50.0 0.0 0.0 0.0 0.5 1.0 1.5 2.0 2.5 0.0 3.0 1.0 2.0 Signal Level (V) 3.0 4.0 5.0 Signal Level (V) Peak-to-Peak Deviation for MOD IN = 0 V to Signal Level, VCC = 5.0 V 700.0 Output Power and ICC versus Voltage, Freq = 915 MHz, with 3dB Attenuator 0.0 16.0 500.0 POUT (dBm) Freq. Deviation (kHz p-p) 600.0 400.0 300.0 -10.0 14.0 -20.0 12.0 -30.0 10.0 -40.0 8.0 -50.0 6.0 200.0 -60.0 100.0 TRANSCEIVERS 11 ICC (mA) Freq. Dev. (KHzp-p) -70.0 2.0 -80.0 0.0 0.0 1.0 2.0 3.0 Signal Level (V) 11-10 4.0 -40C Pout +25C Pout +85C Pout -40C Icc +25C Icc 4.0 5.0 0.0 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 Supply Voltage (Volts) Rev A6 010207