RF2411

RF2411 0 RoHS Compliant & Pb-Free Product Typical Applications • UHF Digital and Analog Receivers • Digital Communication Systems • Commercial and Consumer Systems • Portable Battery-Powered Equipment LOW NOISE AMPLIFIER/MIXER • Spread-Spectrum Communication Systems • General Purpose Frequency Conversion Product Description The RF2411 is a monolithic integrated UHF receiver front-end. The IC contains all of the required components to implement the RF functions of the receiver except for the passive filtering and LO generation. It contains an LNA (low-noise amplifier), a second RF amplifier, and a balanced mixer which can drive a single-ended or balanced load. The output of the LNA is made available as a pin to permit the insertion of a bandpass filter between the LNA and the RF/Mixer section. The LNA output is buffered to permit a wide range of choices for the interstage filter without altering the VSWR or noise figure at the LNA input and to provide high isolation from the LO to the input port. The LNA section may be disabled to conserve power. 0.157 0.150 0.018 0.014 0.008 0.004 0.337 0.334 0.050 0.244 0.229 0.068 0.053 8° MAX 0° MIN 0.034 0.016 0.009 0.007 Optimum Technology Matching® Applied Si BJT Si Bi-CMOS InGaP/HBT GaAs HBT SiGe HBT GaN HEMT GaAs MESFET Si CMOS SiGe Bi-CMOS Package Style: SOIC-14 Features • Single 3V to 6.5V Power Supply • 500MHz to 1900MHz Operation • 25dB Small Signal Gain LNA LNA IN 1 GND 2 GND 3 GND 4 GND 5 IF OUT+ 6 IF OUT- 7 RF AMP 14 LNA OUT 13 NC 12 VCC1 11 VCC2 10 RF IN9 RF IN+ 8 LO IN • 2.5dB Cascaded Noise Figure • 8.5mA DC Current Consumption • -8dBm Input IP3 MIXER Ordering Information RF2411 Low Noise Amplifier/Mixer RF2411 PCBA-L Fully Assembled Evaluation Board (850MHz) RF2411 PCBA-H Fully Assembled Evaluation Board (1800MHz) RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Functional Block Diagram Rev A6 060907 8-7 RF2411 Absolute Maximum Ratings Parameter Supply Voltage Input LO and RF Levels Ambient Operating Temperature Storage Temperature Rating -0.5 to 7.0 +6 -40 to +85 -40 to +150 Unit VDC dBm °C °C Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. RoHS marking based on EUDirective2002/95/EC (at 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 (850MHz) Overall RF Frequency Range IF Frequency Range Cascade Gain Specification Min. Typ. Max. Unit Condition T = 25°C, VCC =5V, RF=850MHz, LO=0dBm, IF=50MHz, Application Schematic 2 configuration 21 Cascade IP3 Cascade Noise Figure 500 to 1900 DC to 150 27 25 20 -8 2.4 2.4 3.4 1.6 1.5:1 -3.5 14 30 2.0:1 MHz MHz dB 29 dBm dB IF=10MHz IF=50MHz IF=150MHz Referenced to the input Single sideband, IF=10MHz Single sideband, IF=50MHz Single sideband, IF=150MHz First Section (LNA) Noise Figure Input VSWR Input IP3 Gain Reverse Isolation Output VSWR dB dBm dB dB Second Section (RF Amp, Mixer, IF1) Noise Figure Input VSWR Input IP3 Conversion Gain Output Impedance 11.0 2.0:1 +6 11 4 -6 to +6 30 30 1.5:1 3 to 6.5 8 20 dB dBm dB kΩ dBm dB dB Single Sideband Open Collector LO Input LO Level LO to RF Rejection LO to IF Rejection LO Input VSWR Power Supply Voltage Current Consumption V mA mA VCC =3.0V VCC =5.0V 8-8 Rev A6 060907 RF2411 Parameter (1800MHz) Overall RF Frequency Range IF Frequency Range Cascade Gain 500 to 1900 DC to 100 22 21 17 -7 4.0 4.0 4.8 2.6 1.2:1 -3.5 10 25 1.5:1 MHz MHz dB Specification Min. Typ. Max. Unit Condition T = 25°C, VCC =5V, RF=1800MHz, LO=0dBm, IF=50MHz, Application Schematic 2 configuration Cascade IP3 Cascade Noise Figure dBm dB IF=10MHz IF=50MHz IF=150MHz Referenced to the input Single sideband, IF=10MHz Single sideband, IF=50MHz Single sideband, IF=150MHz First Section (LNA) Noise Figure Input VSWR Input IP3 Gain Reverse Isolation Output VSWR dB dBm dB dB Second Section (RF Amp, Mixer, IF1) Noise Figure Input VSWR Input IP3 Conversion Gain Output Impedance 10.0 2.0:1 +3 11 4 -6 to +6 30 30 1.2:1 dB dBm dB kΩ dBm dB dB Single Sideband Open Collector LO Input LO Level LO to RF Rejection LO to IF Rejection LO Input VSWR Rev A6 060907 8-9 RF2411 Pin 1 Function LNA IN Description This pin is NOT internally DC-blocked. An external blocking capacitor must be provided if the pin is connected to a device with a DC path. A value of 100pF is recommended for 900MHz and 22pF for 1800MHz. LNA IN Interface Schematic 2 3 4 5 6 GND GND GND GND IF OUT+ Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Same as pin 2. Same as pin 2. Same as pin 2. Balanced open collector output of the mixer. External bias needs to be supplied to this pin. This can be done with a resistor to VCC (see application schematic, “1800MHz, Balanced Resistor Output Matching”), with a balun (see application schematic, “1800MHz, Output Matching with Balun”) or when used in a single-ended configuration (see application schematic, “1800MHz, Single-Ended Resistive Output Matching”). When using a resistor to VCC the resistor value will set the output impedance. Typical values for this resistor are 200 Ω to 1kΩ. A shunt inductor/capacitor resonator to VCC is needed to maintain proper DC voltage at the mixer. At low resistor values the resonator may be omitted at the expense of gain, output power and IP3. To obtain maximum gain and output power a balun as shown in application schematics “1800MHz, Output Matching with Balun” and “850MHz, Output Matching with Balun” is recommended. Using both outputs and matching them correctly to a single ended load will result in a 6dB gain improvement over the plain single ended configuration. Same as pin 6 except complementary output. See pin 6. 50 Ω mixer LO input. This pin has an internal pull-up resistor to VCC and is not DC-blocked. An external blocking capacitor must be provided if the pin is connected to a device with a DC path. A value of 100pF is recommended for 900MHz and 22pF for 1800MHz. IF OUT+ IF OUT- 7 8 IF OUTLO IN LO IN 9 RF IN+ Balanced mixer RF Input port. This pin is NOT internally DC-blocked. An external blocking capacitor must be provided if the pin is connected to a device with a DC path. A value of 100pF is recommended for 900MHz and 22pF for 1800MHz. Matching is required; see the applications schematics. To minimize the noise figure it is recommended to have a bandpass filter before this input. This will prevent noise at the image frequency from being converted to the IF. RF IN+ RF IN- BIAS 10 11 12 RF INVCC2 VCC1 Same as pin 9 except complementary input. Supply voltage for the mixer bias circuits. Supply Voltage for the LNA only. A 47pF external bypass capacitor is required and an optional 0.01 μF will be required if no other low frequency bypass capacitors are nearby. The trace length between the pin and the bypass capacitors should be minimized. The ground side of the bypass capacitors should connect immediately to ground plane. See pin 9. 8-10 Rev A6 060907 RF2411 Pin 13 14 Function NC LNA OUT Description No connection. 50 Ω output. An external DC blocking capacitor is required when this pin is connected to a DC path. LNA OUT Interface Schematic Rev A6 060907 8-11 RF2411 Application Schematic 850MHz, Output Matching with Balun 100 pF RF IN 1 2 3 4 5 6 7 LNA 14 13 12 11 10 9 100 pF RF AMP 100 nF 8 100 pF LO IN 100 pF 2 pF 50 Ω Image Filter Vcc 300 pF 100 nF IF OUT T1 8:1 VCC MIXER 8.2 nH Application Schematic 1800MHz, Output Matching with Balun 22 pF RF IN 1 2 3 4 5 6 7 LNA 14 13 12 11 10 22 pF 9 RF AMP 8 22 pF LO IN 22 pF 2.7 nH 50 Ω Image Filter Vcc 300 pF 100 nF IF OUT T1 8:1 VCC MIXER 100 nF 8-12 Rev A6 060907 RF2411 Application Schematic 1800MHz, Balanced Resistive Output Matching 22 pF RF IN 1 2 3 VDD 4 470 Ω 5 6 7 RF AMP LNA 14 13 12 11 10 22 pF 9 8 22 pF LO IN 22 pF 2.7 nH 0.1 μF 50 Ω Image Filter 300 pF L2 IF OUT1 IF OUT2 470 Ω L1 MIXER Application Schematic 1800MHz, Single-Ended Resistive Output Matching 22 pF RF IN 1 2 3 4 VDD 5 6 7 LNA 14 13 12 11 10 22 pF 9 RF AMP 8 22 pF LO IN 22 pF 2.7 nH 50 Ω Image Filter 300 pF 100 nF MIXER L1 IF OUT 470 Ω Rev A6 060907 8-13 RF2411 Evaluation Board Schematic Mixer Tuned for 850MHz (Download Bill of Materials from www.rfmd.com.) J1 LNA IN LNA 1 C1 1 nF 2 3 4 5 14 13 12 11 10 MIXER 6 7 RF AMP 9 8 C5 1 nF C6 100 pF C8 100 nF 2411400 Rev B C2 1 nF J5 LNA OUT VCC C3 300 pF C4 100 nF J2 IF OUT T1 8:1 C9 2 pF J4 MIXER IN L1 8.2 nH J3 LO IN P1 1 2 P1-3 3 NC GND VCC C7 1 nF 8-14 Rev A6 060907 RF2411 Evaluation Board Schematic Mixer Tuned for 1800MHz J1 LNA IN C1 1 nF 1 2 3 4 5 J2 IF OUT T1 8:1 6 7 RF AMP LNA 14 13 12 11 10 9 8 C6 100 pF C8 100 nF 2411401 Rev B C2 1 nF J5 LNA OUT VCC C3 300 pF C4 100 nF J4 MIXER IN L1 2.7 nH MIXER C5 1 nF P1 1 2 P1-3 3 NC GND VCC C7 1 nF J3 LO IN Rev A6 060907 8-15 RF2411 Evaluation Board Layout 850MHz Board Size 2.0” x 2.0” 8-16 Rev A6 060907 RF2411 Evaluation Board Layout 1800MHz Board Size 2.0” x 2.0” Rev A6 060907 8-17 RF2411 LNA S21 22 20 18 16 14 Vcc=2.7V Vcc=3.0V Vcc=3.3V Vcc=3.6V LNA S12 -8 Vcc=2.7V -12 Vcc=3.6V Vcc=5.0V Vcc=6.0V S21 (dB) 12 10 8 6 4 2 0 0 1 2 Vcc=5.0V Vcc=6.0V S12 (dB) 3 Vcc=4.5V -16 -20 -24 -28 0 1 2 3 Frequency (GHz) Frequency (GHz) LNA VSWR 5 Input VSWR Vcc=2.7V Output VSWR Vcc=2.7V Output VSWR Vcc=3.6V Output VSWR Vcc=5.0V Output VSWR Vcc=6.0V 4 Input VSWR Vcc=3.6V Input VSWR Vcc=5.0V VSWR 3 Input VSWR Vcc=6.0V 2 1 0 1 2 3 Frequency (GHz) LNA S11 Swp Max 3.01GHz 2 .0 Vcc=2.7V LNA S22 1.0 0.6 Vcc=2.7V Vcc=3.6V 0.6 Swp Max 3.01GHz 2. 0 1.0 0.8 3GHz Vcc=3.6V Vcc=5.0V Vcc=6.0V 3 .0 Vcc=5.0V Vcc=6.0V 0.8 10MHz 10.0 0.2 0.4 0.6 0.8 1.0 2.0 3.0 4.0 5.0 0 10.0 0.2 0.4 0.6 0.8 1.0 0 2.0 3.0 10MHz 4.0 5.0 10MHz 10.0 Swp Min 0.01GHz -10.0 .0 -2 6 -0. -0. -0.8 -0.8 -1.0 Swp Min 0.01GHz 8-18 -1.0 . -2 6 0 -3 .4 -0 -0 .4 Rev A6 060907 -4. 0 -5.0 -3 .0 -4. 0 -5.0 -0.2 0.2 4.0 5 .0 -0.2 0. 4 -10.0 .0 0. 4 3 .0 4.0 5.0 3GHz 0 .2 10.0 RF2411 LO Input 0.8 Swp Max 3.01GHz RF Input (single ended) 2. 0 0.6 0.6 Swp Max 3.01GHz 2. 0 1.0 Vcc=2.7V Vcc=3.6V Vcc=5.0V Vcc=6.0V 0 3. 0.8 Vcc=2.7V 1.0 10MHZ 10.0 10.0 10MHZ 3GHZ 3GHZ .4 -0 .4 -0 3GHZ -0. 6 -0. 6 .0 -2 .0 -2 Swp Min 0.01GHz Swp Min 0.01GHz -0.8 -1.0 -0.8 IF Output 0.6 Swp Max 3.01GHz 2. 0 0.8 Vcc=2.7V 1.0 Vcc=3.6V Vcc=5.0V 0 3. Vcc=6.0V 4.0 5.0 10.0 3GHZ 10MHZ .4 -0 -0. 6 .0 -2 Swp Min 0.01GHz -0.8 Rev A6 060907 -1.0 -4. 0 -5.0 -0.2 -10.0 10.0 0.2 0.4 0.6 0.8 1.0 2.0 3.0 4.0 5.0 0 -1.0 -4. 0 -5.0 -3 .0 -4. 0 -5.0 -0.2 3GHZ -0.2 -10.0 10.0 0.2 0.4 0.6 0.8 1.0 2.0 3.0 4.0 5.0 0.2 0.4 0.6 0.8 1.0 2.0 3.0 4.0 5.0 0 0 0.2 4.0 5.0 0. 4 -10.0 -3 .0 -3 .0 0. 4 0. 4 Vcc=3.6V Vcc=5.0V Vcc=6.0V 0 3. 4.0 5.0 10.0 0.2 0.2 8-19 RF2411 8-20 Rev A6 060907