CV221-2A The Communications Edge TM 1.9 – 2.4 GHz Dual-Branch Downconverter IF1 OUTPUT GND GND 26 AMP1 INPUT MIXER IF1 27 GND GND 28 25 24 23 22 IF RF 21 BIAS GND 2 20 GND IF Amp 1 BIAS 3 19 GND GND 4 18 GND GND 5 LO Driver Amp 17 LO GND 6 IF Amp 2 16 GND 15 GND 8 9 10 11 12 13 14 GND IF RF IF2 OUTPUT RF 2 7 INPUT GND It is ideally suited for high dynamic range receiver front ends using diversity receive channels. Functionality includes frequency conversion and IF amplification, while an integrated LO driver amplifier powers the passive mixer. The MCM is implemented with reliable and mature GaAs MESFET and InGaP HBT technology. RF 1 1 INPUT GND Dual channels for diversity +28 dBm Input IP3 +9 dBm Input P1dB RF: 1900 – 2400 MHz IF: 65 – 300 MHz +5V Single supply operation RoHS-compliaint / Pb-free 6x6mm 28-pin QFN package • Low-side LO configuration The CV221-2A is a dual-channel high-linearity downconverter designed to meet the demanding performance, functionality, and cost goals of current and next generation mobile infrastructure basestations and repeaters. It provides high dynamic range performance in a low profile RoHS-compliant/lead-free surface-mount leadless package that measures 6 x 6 mm square. AMP2 INPUT • • • • • • • Functional Diagram GND • High dynamic range downconverter with integrated LO and IF amplifiers Product Description MIXER IF2 Product Features Product Information Typical applications include frequency downconversion used in W-CDMA and WiBro 2.5G and 3G basestation transceiver or repeater applications. Specifications (1) Parameters Units RF Frequency Range LO Frequency Range IF Frequency Range % Bandwidth around IF center frequency IF Test Frequency SSB Conversion Gain Gain Drift over Temp (-40 to 85 °C) Input IP3 Input 1 dB Compression Point Noise Figure LO Input Drive Level LO-RF Isolation LO-IF Isolation RF-IF Isolation Branch-Branch Isolation Return Loss: RF Port Return Loss: LO Port Return Loss: IF Port Operating Supply Voltage Supply Current Thermal Resistance Junction Temperature MHz MHz MHz % MHz dB dB dBm dBm dB dBm dB dB dB dB dB dB dB V mA °C / W °C Min 6.5 +24 -2.5 Typ Max 1900 – 2400 1600 – 2335 65 – 300 ±7.5 240 9.2 ±0.6 +28 +9 11 0 12 26 25 45 14 14 13 +5 315 Comments See note 2 See note 3 10.5 Temp = 25 °C Referenced to +25 °C See note 4 See note 4 See note 5 +2.5 PLO = 0 dBm PLO = 0 dBm 330 34 160 See note 6 See note 6 1. Specifications when using the application specific circuit (shown on page 3) with a low side LO = 0 dBm and IF = 240 MHz in a downconverting application at 25 °C. 2. IF matching components affect the center IF frequency. Proper component values for other IF center frequencies than shown can be provided by emailing to [email protected]. 3. The IF bandwidth of the converter is defined as 15% around any center frequency in its operating IF frequency range. The bandwidth is determined with external components. Specifications are valid around the total ±7.5% bandwidth. ie. with a center frequency of 240 MHz, the specifications are valid from 240 ± 18 MHz. 4. Assumes the supply voltage = +5 V. IIP3 is measured with Δf = 1 MHz with RFin = -5 dBm / tone. 5. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies. 6. The R1 resistor can be modified for the CV221-2A to draw less current. Changing it from 13 to 18Ω is expected to have the converter draw 17mA less current so that the converter will draw about 300mA typically under LO drive, while degrading the IIP3 performance by 0.5 dB. Absolute Maximum Rating Parameter Operating Case Temperature Storage Temperature DC Voltage Junction Temperature Rating -40 to +85 °C -55 to +150 °C +5.5 V +220 °C Ordering Information Part No. Description UMTS-band Dual-Branch Downconverter CV221-2AF (lead-free/RoHS-compliant 6x6mm QFN package) CV221-2APCB240 Fully Assembled Eval. Board, IF = 240MHz Operation of this device above any of these parameters may cause permanent damage. Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com Page 1 of 5 May 2006 CV221-2A The Communications Edge TM 1.9 – 2.4 GHz Dual-Branch Downconverter Product Information RF 1 1 INPUT GND 26 IF1 OUTPUT GND 27 AMP1 INPUT MIXER IF1 28 GND GND Device Architecture / Application Circuit Information 25 24 23 22 IF RF GND 2 20 GND IF Amp 1 BIAS 3 Stage 19 N/C GND 4 18 GND N/C 5 GND 6 LO Driver Amp 17 LO IF Amp 2 16 GND 15 N/C IF 8 9 10 11 12 13 14 GND GND AMP2 INPUT GND IF2 OUTPUT GND RF MIXER IF2 RF 2 7 INPUT Typical Downconverter Performance Chain Analysis (Each Branch) 21 BIAS LO Amp / MMIC Mixer IF Amplifier CV221-2A Gain (dB) Input P1dB (dBm) Input IP3 (dBm) NF (dB) -8.4 20 33 9 17.6 1 21 2.2 Cumulative Performance Current (mA) 115 100 315* Cumulative Performance Input Input NF P1dB IP3 (dB) (dBm) (dBm) -8.4 20 33 9 9.2 9 27.8 11 9.2 9 27.8 11 Gain (dB) * The 2nd branch includes another mixer and IF amplifier, which increases the total current consumption of the MCM to be 315 mA. Printed Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness CV221-2A: The application circuit can be broken up into three main functions as denoted in the colored dotted areas above: RF/IF diplexing (blue), IF amplifier matching (green), and dc biasing (purple). There are various placeholders for chip components in the circuit schematic so that a common PCB can be used for all WJ dual-branch converters. of 5 to 10%, a simple two element matching network, in the form of either a high-pass or low-pass filter structure, is sufficient to match the MMIC IF amplifier over these narrow bandwidths. Proper component values for other IF center frequencies can be provided by emailing to [email protected]. External Diplexer: This is only used with the cellular-band CV products. The mixer performs the diplexing internally for the CV221-2A; therefore the components shown in the diplexer section should be not be loaded except for L3, L10, L7, and L11, which should contain a 0 Ω jumper. DC biasing: DC bias must be provided for the LO and IF amplifiers in the converter. R1 sets the operating current for the last stage of the LO amplifier and is chosen to optimize the mixer LO drive level. Proper RF chokes and bypass capacitors are chosen for proper amplifier biasing at the intended frequency of operation. The “+5 V” dc bias should be supplied directly from a voltage regulator. IF Amplifier Matching: The IF amplifier requires matching elements to optimize the performance of the amplifier to the desired IF center frequency. Since IF bandwidths are typically on the order Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com Page 2 of 5 May 2006 CV221-2A The Communications Edge TM 1.9 – 2.4 GHz Dual-Branch Downconverter Product Information Application Circuit: IF = 240 MHz (CV221-2APCB240) RF = 1900 – 2200 MHz, IF = 240 MHz PCB Layout Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness Bill of Materials Ref. Desig. R1(1) R2, R3, R4, L3, L7 L10, L11 R6, R7 C1, C5, C10, C15 C4, C11 (2) C6, C12, C14 C7, C13 L1 L4, L8 (2) L5, L9 C2, C3, C8, C9, C16 C17, C19, C20, C21 C22, L2, L6 U1 Component 13 Ω chip resistor Size 0805 0 Ω chip resistor 0603 8.2 Ω chip resistor 1000 pF chip capacitor 3 pF chip capacitor .018 μF chip capacitor 100 pF chip capacitor 120 nH chip inductor 82 nH chip inductor 220 nH chip inductor 0603 0603 0603 0603 0603 0603 0603 0805 Shown on silkscreen, but not used in actual circuit. CV221-2A WJ Converter QFN Notes: 1. The R1 resistor can be modified for the CV221-2A to draw less current. Changing it from 13 to 18Ω is expected to have the converter draw 17mA less current so that the converter will draw about 300mA typically under LO drive, while degrading the IIP3 performance by 0.5 dB. 2. The values shown above have the IF tuned at 240 MHz and will affect the optimal performance of the converter. For other frequencies, these components need to be modified as follows: Ref. Desig. C4, C11 L4, L8 IF Center Frequency (MHz) 70 75 100 120 140 240 15 pF 15 pF 8.2 pF 8.2 pF 5.6 pF 3 pF 220 nH 220 nH 180 nH 150 nH 150 nH 82 nH Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com Page 3 of 5 May 2006 CV221-2A The Communications Edge TM 1.9 – 2.4 GHz Dual-Branch Downconverter Product Information Typical Downconversion Performance Plots Performance using the circuitry on the CV221-2APCB240 Evaluation Board Conversion Loss vs RF Frequency vs Temperature Input IP3 vs RF Frequency vs Temperature LO = 0 dBm, IF = 240 MHz, low-side LO LO = 0 dBm, IF = 240 MHz, low-side LO 9 30 In p u t IP 3 (d B m ) 32 C o n v e rs io n L o s s (d B ) 10 8 7 6 -40 °C 5 1800 1900 2000 +25 °C 2100 28 26 24 +85 °C 2200 -40 °C 22 1800 2300 1900 RF Frequency (MHz) 2000 +25 °C 2100 +85 °C 2200 R-I Isolation vs RF Frequency L-R Isolation vs LO Frequency L-I Isolation vs LO Frequency Referenced with LO = 0 dBm 20 15 10 -40 °C 1950 2000 +25 °C 2050 35 L -I Is o la tio n (d B ) 25 5 1900 Referenced with LO = 0 dBm 25 L -R Is o la tio n (d B ) R -I Is o la tio n (d B ) 30 20 15 10 5 +85 °C 2100 2150 -40 °C 0 1500 2200 1600 1700 +25 °C 1800 1900 30 25 20 15 +85 °C 2000 -40 °C 10 1500 2100 1600 1800 1900 +85 °C 2000 LO Frequency (MHz) LO Frequency (MHz) RF Return Loss vs RF Frequency LO Return Loss vs Frequency IF Return Loss vs LO Frequency -5 -10 -15 -20 1900 +25 °C 2000 2100 +85 °C 2200 2300 0 -5 -10 -15 -20 -40 °C -25 1500 1600 RF Frequency (MHz) +25 °C 1700 1800 +85 °C 1900 2100 -10 -15 -20 -40 °C -25 1500 1600 +25 °C 1700 1800 +85 °C 1900 2000 2100 LO Frequency (MHz) Noise Figure vs RF Frequency IF = 240 MHz, low-side LO at 0 dBm IF = 240 MHz, low-side LO at 0 dBm 14 N o is e F ig u re (d B ) 14 In p u t P 1 d B (d B m ) 2000 -5 LO Frequency (MHz) Input P1dB vs RF Frequency 12 10 8 6 -40 °C 4 1800 IF R e tu rn L o s s (d B ) L O R e tu rn L o s s (d B ) 0 -40 °C 2100 IF = 240 MHz, LO = 0 dBm 0 R F R e tu rn L o s s (d B ) 1700 +25 °C RF Frequency (MHz) IF = 240 MHz, low-side LO at 0 dBm -25 1800 2300 RF Frequency (MHz) 1900 +25 °C 2000 2100 RF Frequency (MHz) 12 10 8 6 -40 °C +85 °C 2200 2300 4 1900 1950 +25 °C 2000 2050 +85 °C 2100 2150 2200 RF Frequency (MHz) Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com Page 4 of 5 May 2006 CV221-2A The Communications Edge TM 1.9 – 2.4 GHz Dual-Branch Downconverter Product Information CV221-2AF Mechanical Information This package is lead-free/RoHS-compliant. The plating material on the pins is annealed matte tin over copper. It is compatible with both lead-free (maximum 260 °C reflow temperature) and leaded (maximum 245 °C reflow temperature) soldering processes. Product Marking Outline Drawing The component will be lasermarked with a “CV221-2AF” product label with an alphanumeric lot code on the top surface of the package. Tape and reel specifications for this part will be located on the website in the “Application Notes” section. ESD / MSL Information ESD Rating: Value: Test: Standard: Class 1B Passes 500V to <1000V Human Body Model (HBM) JEDEC Standard JESD22-A114 ESD Rating: Value: Test: Standard: Class III Passes 500V to <1000V Charged Device Model (CDM) JEDEC Standard JESD22-C101 MSL Rating: Level 2 at +260 °C convection reflow Standard: JEDEC Standard J-STD-020 RF 1 1 INPUT IF1 OUTPUT GND 26 AMP1 INPUT 27 GND MIXER IF1 28 GND Mounting Configuration / Land Pattern GND Functional Pin Layout 25 24 23 22 IF RF 21 BIAS GND 2 20 GND IF Amp 1 BIAS 3 19 GND GND 4 LO Driver Amp 17 LO GND 6 IF Amp 2 16 GND 1 3 5 7 9 15 GND IF 8 9 10 11 12 13 14 GND GND AMP2 INPUT GND IF2 OUTPUT GND RF MIXER IF2 RF 2 7 INPUT Pin 18 GND GND 5 Function Ch. 1 Mixer RF Input LO Amp Bias N/C or GND Ch. 2 Mixer RF Input Ch. 2 Mixer IF Output Pin Function 15 N/C or GND 17 19 LO input N/C or GND 21 23 11 Ch. 2 IF Amp Input 25 13 Ch. 2 IF Amp Output / Bias 27 +5 V Ch. 1 IF Amp Output / Bias Ch. 1 IF Amp Input Ch. 1 Mixer IF Output The even numbered pins are hard grounded to the backside paddle internally. They can be grounded or not connected. The backside paddle is required to be grounded. Specifications and information are subject to change without notice WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com Page 5 of 5 May 2006