HMC473MS8E

HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz 5 ATTENUATORS - SMT Typical Applications The HMC473MS8 / HMC473MS8E is ideal for: • Cellular, UMTS/3G Infrastructure • Portable Wireless • GPS Features RoHS Compliant Product Single Positive Voltage Control: 0 to +3V High Attenuation Range: 48 dB @ 0.9 GHz High P1dB Compression Point: +15 dBm Ultra Small Package: MSOP8 Replaces HMC173MS8 Functional Diagram General Description The HMC473MS8 & HMC473MS8E are general purpose absorptive voltage variable attenuators in 8-lead MSOP packages. The devices operate with a +3.3V supply voltage and a 0 to +3V control voltage. Unique features include a high dynamic attenuation range of up to 48 dB and excellent power handling performance through all attenuation states. The HMC473MS8 & HMC473MS8E are ideal for operation in wireless applications from 0.45 to 1.6 GHz. Operation from 1.7 to 2.2 GHz is possible with a reduced maximum attenuation of 29 to 32 dB. Improved control voltage linearity vs. attenuation can be achieved with an external driver circuit. Electrical Specifi cations, TA = +25° C, Vdd = +3.3 Vdc, 50 Ohm System Parameter Insertion Loss (Min. Atten.) (Vctl = 0.0 Vdc) 0.45 - 0.8 GHz 0.8 - 1.0 GHz 1.0 - 1.6 GHz 1.6 - 2.0 GHz 2.0 - 2.2 GHz 0.45 - 0.8 GHz 0.8 - 1.0 GHz 1.0 - 1.6 GHz 1.6 - 2.0 GHz 2.0 - 2.2 GHz 0.45 - 0.8 GHz 0.8 - 1.0 GHz 1.0 - 1.6 GHz 1.6 - 2.0 GHz 2.0 - 2.2 GHz Min Atten. Atten. >2.0 Min Atten. Atten. >2.0 Min Atten. Atten. >2.0 0.45 - 2.2 GHz 24 11 34 43 32 27 24 Min. Typ. 1.8 1.9 2.4 2.8 3.0 39 48 37 32 29 15 14 11 10 9 20 5.5 28 15 47 20 1.3 1.5 Max. 2.2 2.3 2.9 3.3 3.5 Units dB dB dB dB dB dB dB dB dB dB dB dB dB dBm dBm dBm dBm dBm dBm µS µS Attenuation Range (Vctl = 0 to +3 V) Return Loss (Vctl = 0 to +3 V) Input Power for 0.1 dB Compression (0.9 GHz) Input Power for 1.0 dB Compression (0.9 GHz) Input Third Order Intercept (0.9 GHz, Two-tone Input Power = +5.0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 5 - 156 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz Insertion Loss vs. Temperature 0 Return Loss vs. Control Voltage 0 0 V (WORSE CASE) 1.0 V 1.8 V 2.0 V 3.0 V 5 ATTENUATORS - SMT 5 - 157 INSERTION LOSS (dB) -1 RETURN LOSS (dB) +25 C +85 C -40 C -5 -2 -10 -3 -15 -4 -20 -5 0.4 0.6 0.8 1 1.2 1.4 1.6 FREQUENCY (GHz) 1.8 2 2.2 -25 0.4 0.6 0.8 1 1.2 1.4 FREQUENCY (GHz) 1.6 1.8 2 Input IP3 vs. Control Voltage @ 0.45 GHz 55 50 45 INPUT IP3 (dBm) 40 35 30 25 20 15 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) +25 C +85 C -40 C Input IP3 vs. Control Voltage @ 0.9 GHz 55 50 45 INPUT IP3 (dBm) 40 35 30 25 20 15 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) +25 C +85 C -40 C Input IP3 vs. Control Voltage @ 1.9 GHz 55 50 45 INPUT IP3 (dBm) 40 35 30 25 20 15 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) +25 C +85 C -40 C Input IP3 vs. Control Voltage @ 2.1 GHz 55 50 45 INPUT IP3 (dBm) 40 35 30 25 20 15 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) +25 C +85 C -40 C For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz 5 ATTENUATORS - SMT Relative Attenuation vs. Control Voltage @ 0.45 GHz 0 Return Loss vs. Control Voltage @ 0.45 GHz 0 +25 C +85 C -40 C -9 RETURN LOSS (dB) 1.5 2 2.5 3 ATTENUATION (dB) -5 -18 +25 C +85 C -40 C -10 -27 -15 -36 -20 -45 0 0.5 1 CONTROL VOLTAGE (V) -25 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) Relative Attenuation vs. Control Voltage @ 0.9 GHz 0 -10 -20 -30 -40 -50 -60 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) +25 C +85 C -40 C Return Loss vs. Control Voltage @ 0.9 GHz 0 +25 C +85C -40 C -5 RETURN LOSS (dB) ATTENUATION (dB) -10 -15 -20 -25 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) Relative Attenuation vs. Control Voltage @ 1.9 GHz 0 -5 Return Loss vs. Control Voltage @ 1.9 GHz 0 +25 C +85 C -40 C -5 ATTENUATION (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) -25 0 0.5 1 1.5 RETURN LOSS (dB) -10 +25 C +85 C - 40 C -15 -20 2 2.5 3 CONTROL VOLTAGE (V) 5 - 158 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz Relative Attenuation vs. Control Voltage @ 2.1 GHz 0 -5 -5 ATTENUATION (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) -25 0 0.5 1 1.5 2 2.5 3 CONTROL VOLTAGE (V) RETURN LOSS (dB) Return Loss vs. Control Voltage @ 2.1 GHz 0 +25 C +85 C -40 C 5 ATTENUATORS - SMT 5 - 159 -10 +25 C +85 C -40 C -15 -20 Relative Attenuation vs. Control Voltage 0 -10 ATTENUATION (dB) -20 -30 -40 -50 -60 -70 0.4 0.7 1 1.3 1.6 FREQUENCY (GHz) 1.9 2.2 1.0 V 1.5 V 1.6V 1.7 V 1.8 V 2.0 V 3.0 V Worse Case Input P1dB vs. Temperature 25 INPUT P1dB (dBm) 20 15 10 +25 C +85 C -40 C 5 0.4 0.6 0.8 1 1.2 1.4 1.6 FREQUENCY (GHz) 1.8 2 2.2 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz 5 ATTENUATORS - SMT Absolute Maximum Ratings VCTL Vdd Maximum Input Power Vdd = +3.3 Vdc Channel Temperature (Tc) Thermal Resistance (RTH) (junction to lead) Storage Temperature Operating Temperature ESD Sensitivity (HBM) -0.2 Vdc to Vdd +8 Vdc +29 dBm +21 dBm 150 °C 92 °C/W -65 to +150 °C -40 to +85 °C Class 1A Min. Atten. Attenuation >2 dB Control and Bias Voltage VCTL Vdd 0 to +3 Vdc @ 1 μA +3.3 Vdc ± 0.1 Vdc @ 10 μA ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE. 4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE. 5. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. Package Information Part Number HMC473MS8 HMC473MS8E Package Body Material Low Stress Injection Molded Plastic RoHS-compliant Low Stress Injection Molded Plastic Lead Finish Sn/Pb Solder 100% matte Sn MSL Rating MSL1 MSL1 [1] Package Marking [3] H473 XXXX H473 XXXX [2] [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX 5 - 160 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz Pin Descriptions Pin Number Function Description These pins are DC coupled and matched to 50 Ohms. DC blocking capacitors are required. 330pF capacitors are supplied on evaluation board. Interface Schematic 5 RF1, RF2 1, 8 2, 7 GND Pins must connect to RF ground. 3 Vctl Control voltage 4, 5 N/C No Connection. These pins may be connected to RF ground. Performance will not be affected. 6 Vdd Supply Voltage. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 5 - 161 ATTENUATORS - SMT HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz 5 ATTENUATORS - SMT Attenuation Linearizing Control Circuit For The HMC473MS8 / HMC473MS8E Voltage Variable Attenuator A driver circuit to improve the attenuation linearity of the HMC473MS8 & HMC473MS8E can be implemented with a simple op-amp configuration. A breakpoint linearization circuit will scale the voltage supplied to the control line of the HMC473MS8 & HMC473MS8E, so that a more linear attenuation vs. control voltage slope can be achieved. A -3.3V and +3.3V supply is required. Diode and resistor values which define the op-amp gain, and breakpoint were selected to optimize a measured production lot of attenuators at 0.9 GHz. R7 may be varied to optimize the performance of any given attenuator. If the input voltage to the linearizing circuit will not drop below 1.0V, the R9 and D2 may be omitted, and this will greatly reduce the overall power consumption of the driver circuit. The linearizing circuit has been optimized for 0.9 GHz attenuation applications. A similar approach may be used at other frequencies by adjusting R1 - R9 resistor values. Application Circuit Required Parts List Part AD822 R1 R2 R3 R4 R5 R6 R7 R8 R9 D1, D2 Description Op-Amp 10K ohms 200K ohms 7.5K ohms 39K ohms 220K ohms 91K ohms 910 ohms 51 ohms 100 ohms LL4148 D-35 Manufacturer Analog Devices Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Digi-Key 5 - 162 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC473MS8 / 473MS8E v01.1105 GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz Evaluation PCB 5 ATTENUATORS - SMT List of Materials for Evaluation PCB 101827 [1] Item J1 - J2 J3 - J5 C1, C2 C3, C4 U1 PCB [2] Description PCB Mount SMA RF Connector DC PIN 330pF capacitor, 0402 Pkg. 10KpF capacitor, 0603 Pkg. HMC473MS8 / HMC473MS8E 101825 Eval Board [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 The circuit board used in the final application should be generated with proper RF circuit design techniques. Signal lines at the RF ports should be 50 ohm impedance and the package ground leads should be connected directly to the PCB RF ground plane, similar to that shown above. The evaluation circuit board shown above is available from Hittite Microwave Corporation upon request. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 5 - 163