HMC273MS10G v02.1100 MICROWAVE CORPORATION 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz ATTENUATORS - SMT 9 Typical Applications Features The HMC273MS10G is ideal for: 1 dB LSB Steps to 31 dB • Cellular Single Positive Control Per BIT • PCS, ISM, MMDS +/- 0.5 dB Typical Bit Error • WLL applications Miniature MSOP 10 Package: 14.8mm2 Functional Diagram General Description The HMC273MS10G is a broadband 5 - bit positive control GaAs IC digital attenuator in a 10 lead MSOP plastic package. Covering 0.7 to 3.7 GHz, the insertion loss is typically less than 2 dB. The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Accuracy is excellent at ± 0.5 dB typical with an IIP3 of up to +48 dBm. Five bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state. A single Vdd bias of +3 to +5 volts applied through an external 5K Ohm resistor is required. Electrical Specifications, TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated) Parameter Frequency Min. Typical Max. Units 2.4 2.7 3.0 3.5 dB dB dB dB Insertion Loss 0.7 - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 3.7 GHz 1.8 2.1 2.4 2.8 Attenuation Range 0.7 - 3.7 GHz 31 dB Return Loss (RF1 & RF2, All Atten. States) 0.7 - 1.4 GHz 1.4 - 2.7 GHz 2.7 - 3.7 GHz 17 20 14 dB dB dB 0.7 - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 3.7 GHz 2.7 - 3.7 GHz ± 0.35 + 3% of Atten. Setting Max ± 0.25 + 3% of Atten. Setting Max ± 0.30 + 5% of Atten. Setting Max ± 0.30 + 5% of Atten. Setting Max ± 0.50 + 8% of Atten. Setting Max dB dB dB dB dB 11 14 10 Attenuation Accuracy: (Referenced to Insertion Loss) All Attenuation States All Attenuation States All Attenuation States 1 - 15 dB States 16 - 31 dB States Input Power for 0.1 dB Compression Vdd = 5V Vdd = 3V 0.7 - 3.7 GHz 24 22 dBm dBm Input Third Order Intercept Point (Two-tone Input Power = 0 dBm Each Tone) Vdd = 5V Vdd = 3V 0.7 - 3.7 GHz 48 46 dBm dBm 560 600 ns ns Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 9 - 14 0.7 - 3.7 GHz For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com HMC273MS10G v02.1100 MICROWAVE CORPORATION 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Return Loss RF1, RF2 Insertion Loss (Only Major States are Shown) 0 0 -40 C -1.5 -2 -2.5 -10 -15 -20 -3 2 dB -25 +85 C -3.5 1 dB 1 1.5 2 2.5 3 3.5 -30 0.5 4 1 4 dB 8 dB 1.5 FREQUENCY (GHz) 2 2.5 3 3.5 Absolute Bit Error vs. Attenuation State (Only Major States are Shown) 0 2 3.5 GHz -5 1.5 BIT ERROR (dB) -10 -15 -20 -25 2.4 GHz 1.9 GHz 1 0.9 GHz 0.5 -30 -35 0.5 0 1 1.5 2 2.5 3 3.5 4 0 5 10 FREQUENCY (GHz) 15 20 25 30 ATTENUATION STATE (dB) Absolute Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 150 3 RELATIVE PHASE (deg.) 4 BIT ERROR (dB) 4 FREQUENCY (GHz) Normalized Attenuation NORMALIZED ATTENUATION (dB) 16 dB 31 dB ATTENUATORS - SMT +25 C -4 0.5 9 -5 -1 RETURN LOSS (dB) INSERTION LOSS (dB) -0.5 1, 2, 4 dB 31 dB 8 dB 2 16 dB 1 100 31 dB 16 dB 50 0 -50 1, 2, 4, 8 dB 0 0.5 -100 1 1.5 2 2.5 FREQUENCY (GHz) 3 3.5 4 0 1 2 3 4 FREQUENCY (GHz) Note: All Data Typical Over Voltage (+3V to +5V) & Temperature (-40 to +85 deg. C.). For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 9 - 15 MICROWAVE CORPORATION HMC273MS10G v02.1100 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Control Voltages Truth Table Control Voltage Input ATTENUATORS - SMT 9 V1 16 dB V2 8 dB V3 4 dB V4 2 dB V5 1 dB Attenuation Setting RF1 - RF2 High High High High High Reference I.L. High High High High Low 1 dB High High High Low High 2 dB High High Low High High 4 dB High Low High High High 8 dB Low High High High High 16 dB Low Low Low Low Low 31 dB Max. Atten. State Bias Condition Low 0 to +0.2 V @ 20 uA Max High Vdd ± 0.2V @ 100 uA Max Note: Vdd = +3V to 5V ± 0.2V Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. Application Circuit DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specific frequency to pass with minimal loss. R1 = 5K Ohm is required to supply voltage to the circuit through either PIN 6 or PIN 10. 9 - 16 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION HMC273MS10G v02.1100 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Absolute Maximum Ratings Vdd + 0.5 Vdc Bias Voltage (Vdd) +8.0 Vdc Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C RF Input Power (0.7 - 3.7 GHz) +26 dBm 9 ATTENUATORS - SMT Control Voltage (V1 - V5) Outline Drawing NOTES: 1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. 2. LEADFRAME MATERIAL: COPPER ALLOY 3. LEADFRAME PLATING: Sn/Pb SOLDER 4. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE. 6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE. 7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 9 - 17 MICROWAVE CORPORATION HMC273MS10G v02.1100 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Evaluation Circuit Board ATTENUATORS - SMT 9 * R2 - R6 = 100 Ohm. These resistors are optional and may be used to enhance decoupling of the RF path from the control inputs. The circuit board used in the final application should use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads and exposed ground paddle should be connected directly to the ground plane similar to that shown below. A sufficient number of VIA holes should be used to connect the top and bottom ground planes. The evaluation circuit board as shown is available from Hittite Microwave Corporation upon request. List of Material Item Description J1 - J2 PC Mount SMA Connector J3 - J6 DC Pin R1 5k Ohm Resistor, 0402 Chip R2, R3, R4 100 Ohm Resistor, 0402 Chip C1, C2 0402 Chip Capacitor, Select for Lowest Frequency of Operation U1 HMC273MS10G Digital Attenuator PCB* 103391 Evaluation PCB 1.5” x 1.5” *Circuit Board Material: Rogers 4350 9 - 18 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v02.1100 HMC273MS10G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Notes: ATTENUATORS - SMT 9 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 9 - 19