HMC307QS16G / 307QS16GE v08.0908 ATTENUATORS - SMT 5 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Typical Applications Features The HMC307QS16G(E) 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(E) are broadband 5-bit GaAs IC digital attenuators in 16 lead QSOP grounded base surface mount plastic packages. 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 Specifi cations, TA = +25 C, Vee = -5V & VCTL= 0/Vee Parameter Frequency Min. DC - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 4.0 GHz Insertion Loss Attenuation Range DC - 4 GHz Typical Max. Units 1.8 1.9 2.0 2.1 2.2 2.4 2.5 2.7 dB dB dB dB 31 dB 15 17 18 15 dB dB dB dB 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 DC - 4 GHz 140 160 ns ns 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 Attenuation Accuracy: (Referenced to Insertion Loss) 1 - 20 dB States 21 - 31 dB States 1 - 15 dB States 16 - 31 dB States Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 5 - 66 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 HMC307QS16G / 307QS16GE v08.0908 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz 0 0 -0.5 -5 -1 -10 31 dB RETURN LOSS (dB) INSERTION LOSS (dB) (Only Major States are Shown) -1.5 -2 -2.5 +25 -40 +85 -3 8 dB 16 dB -15 -20 -25 -30 1 dB -3.5 -35 -4 -40 2, 4 dB 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 FREQUENCY (GHz) Normalized Attenuation 2.5 3 4 2 0 -5 3.5 GHz 1.5 BIT ERROR (dB) -10 -15 -20 1 dB 2 dB 4 dB -25 8 dB 16 dB 31 dB 2.4 GHz 0.1 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) 100 RELATIVE PHASE (deg.) 2 1.5 BIT ERROR (dB) 3.5 Absolute Bit Error vs. Attenuation State (Only Major States are Shown) NORMALIZED ATTENUATION (dB) 2 FREQUENCY (GHz) ATTENUATORS - SMT 5 Return Loss RF1, RF2 Insertion Loss 31 dB 1 16 dB 1, 2 & 4 dB 0.5 8 dB 80 31 dB 60 40 16 dB 8 dB 4 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: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 5 - 67 HMC307QS16G / 307QS16GE v08.0908 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz ATTENUATORS - SMT 5 Control Voltage Truth Table State Bias Condition Low 0 to -3V @ 70 uA Typ. High Vee + 0.8V @ 5 uA Typ. Control Voltage Input V1 16 dB Note: Vee = -5V 10% Bias Voltage & Current Vee Range = -5.0 Vdc 10% Vee (VDC) lee (Typ.) (mA) lee (Max.) (mA) -5.0 3 6 V2 8 dB V3 4 dB V4 2 dB V5 1 dB Attenuation State RF1 - RF2 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 High High High High High 31 dB Max. Atten. 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 specifi c 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. 5 - 68 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 HMC307QS16G / 307QS16GE v08.0908 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Control Voltage (V1 - V5) 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 ESD Sensitivity (HBM) Class 1A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing ATTENUATORS - SMT 5 Absolute Maximum Ratings 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 AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. Package Information Part Number Package Body Material Lead Finish MSL Rating HMC307QS16G Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC307QS16GE RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] HMC307 XXXX [2] HMC307 XXXX [1] Max peak reflow temperature of 235 C [2] Max peak reflow temperature of 260 C [3] 4-Digit lot number XXXX 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 - 69 HMC307QS16G / 307QS16GE v08.0908 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Evaluation Circuit Board ATTENUATORS - SMT 5 * R2 - R6 = 100 Ohm. These resistors are optional and may be used to enhance decoupling of the RF path from the control inputs. List of Materials for Evaluation PCB 103397 [1] Item Description J1 - J2 PCB 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(E ) Digital Attenuator PCB [2] 103395 Evaluation PCB 1.5" x 1.5" 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. [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 5 - 70 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 HMC307QS16G / 307QS16GE v08.0908 1dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz 5 ATTENUATORS - SMT Notes: 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 - 71