MICROWAVE CORPORATION v06.0503 HMC307QS16G 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz ATTENUATORS - SMT 9 Typical Applications Features The HMC307QS16G is ideal for: 1 dB LSB Steps to 31 dB • Cellular Single Control Line Per Bit • PCS, ISM, MMDS +/- 0.5 dB Typical Bit Error • Wireless Local Loop Miniature QSOP-16 Package: 29.4 mm2 Functional Diagram General Description The HMC307QS16G is a broadband 5-bit GaAs IC digital attenuator in a 16 lead QSOP grounded base surface mount plastic package. Covering DC to 4 GHz, the insertion loss is less then 2 dB typical. The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Attenuation accuracy is excellent at ± 0.5 dB typical with an IIP3 of up to +44 dBm. Five bit control voltage inputs, toggled between 0 and -5V, are used to select each attenuation state at less than 50 uA each. A single Vee bias of -5V allows operation down to DC. This product is an excellent alternative to the HMC235QS16G. Electrical Specifications, TA = +25° C, Vee = -5V & VCTL= 0/Vee Parameter Min. Typical Max. Units 2.2 2.4 2.5 2.7 dB dB dB dB Insertion Loss DC - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 4.0 GHz 1.8 1.9 2.0 2.1 Attenuation Range DC - 4.0 GHz 31 dB Return Loss (RF1 & RF2, All Atten. States) DC - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 4.0 GHz 11 11 10 8 15 17 18 15 dB dB dB dB Attenuation Accuracy: (Referenced to Insertion Loss) 1 - 20 dB States 21 - 31 dB States 1 - 15 dB States 16 - 31 dB States DC - 2.7 GHz DC - 2.7 GHz 2.7 - 4.0 GHz 2.7 - 4.0 GHz ± 0.2 + 3% of Atten. Setting Max ± 0.3 + 5% of Atten. Setting Max ± 0.3 + 5% of Atten. Setting Max ± 0.6 + 10% of Atten. Setting Max dB dB dB dB Input Power for 0.1 dB Compression 0.5 - 4.0 GHz 24 dBm Input Third Order Intercept Point (Two-tone Input Power = 0 dBm Each Tone) 0.5 - 4.0 GHz 44 dBm Switching Characteristics DC - 4.0 GHz 140 160 ns ns tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 9 - 50 Frequency 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 HMC307QS16G v06.0503 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Return Loss RF1, RF2 SUB-HARMONICALLY (Only PUMPED MIXER 17 - 25 GHz Major States are Shown) 0 0 -0.5 -5 +25 C 8 dB 31 dB -1.5 -2 -2.5 +85 C 9 16 dB -10 -15 -20 -25 -3 -30 -3.5 -35 -4 -40 1 dB 2, 4 dB 0 0.5 1 1.5 2 2.5 3 3.5 0 4 0.5 1 1.5 2.5 3 (Only Major States are Shown) 0 4 2 -5 4 dB 1 dB 2 dB 8 dB BIT ERROR (dB) 1.5 -10 -15 -20 16 dB 31 dB -25 3.5 GHz 0.1 GHz 2.4 GHz 1 1.9 GHz 0.9 GHz 0.5 -30 -35 0 0 0.5 1 1.5 2 2.5 3 3.5 4 1 4 7 10 FREQUENCY (GHz) 13 16 19 22 25 28 31 ATTENUATION STATE (dB) Absolute Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 2 100 80 RELATIVE PHASE (deg.) 31 dB 1.5 BIT ERROR (dB) 3.5 Absolute Bit Error vs. Attenuation State Normalized Attenuation NORMALIZED ATTENUATION (dB) 2 FREQUENCY (GHz) FREQUENCY (GHz) ATTENUATORS - SMT -40 C -1 RETURN LOSS (dB) INSERTION LOSS (dB) GaAs MMIC Insertion Loss 16 dB 1, 2 & 4 dB 1 8 dB 0.5 31 dB 60 8 dB 4 dB 40 16 dB 20 0 1, 2 dB 0 -20 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (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 9 - 51 MICROWAVE CORPORATION HMC307QS16G v06.0503 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Truth Table Control Voltage Control Voltage Input ATTENUATORS - SMT 9 Attenuation State RF1 - RF2 State Bias Condition Low 0 to -3V @ 70 uA Typ. High Vee + 0.8V @ 5 uA Typ. V1 16 dB V2 8 dB V3 4 dB V4 2 dB V5 1 dB Low Low Low Low Low Reference I.L. Low Low Low Low High 1 dB Low Low Low High Low 2 dB Low Low High Low Low 4 dB Low High Low Low Low 8 dB High Low Low Low Low 16 dB Vee (VDC) lee (Typ.) (mA) lee (Max.) (mA) High High High High High 31 dB Max. Atten. -5.0 3 6 Note: Vee = -5V ± 10% Bias Voltage & Current Vee Range = -5.0 Vdc ± 10% 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 pF ~ 0.1 uF 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 11 or Pin 14. Suggested Driver Circuit (One Circuit Required Per Bit Control Input) Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended value to suppress unwanted RF signals at V1 - V5 control lines. 9 - 52 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 HMC307QS16G v06.0503 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Absolute Maximum Ratings Vee - 0.5 Vdc Bias Voltage (Vee) -7.0 Vdc Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C RF Input Power (0.5 - 4 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 - 53 v06.0503 MICROWAVE CORPORATION HMC307QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 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 paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request. List of Material Item Description J1 - J2 PC Mount SMA Connector J3 - J9 DC Pin R1 5k Ohm Resistor, 0402 Pkg. R2 - R6 100 Ohm Resistor, 0402 Pkg. C1, C2 0402 Chip Capacitor, Select Value for Lowest Frequency of Operation U1 HMC307QS16G Digital Attenuator PCB* 103395 Evaluation PCB 1.5” x 1.5” *Circuit Board Material: Rogers 4350 9 - 54 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 v06.0503 MICROWAVE CORPORATION HMC307QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 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 - 55