Analog Devices Welcomes Hittite Microwave Corporation NO CONTENT ON THE ATTACHED DOCUMENT HAS CHANGED www.analog.com www.hittite.com THIS PAGE INTENTIONALLY LEFT BLANK HMC424G16 v04.0709 ATTENUATORS - DIGITAL - SMT 5 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz Typical Applications Features The HMC424G16 is ideal for: 0.5 dB LSB Steps to 31.5 dB • Telecom Infrastructure Single Control Line Per Bit • Military Radios, Radar & ECM ±0.5 to ±0.8 dB Typical Bit Error • Space Applications 16 Lead Hermetic SMT Package • Test Instrumentation Functional Diagram General Description The HMC424G16 is a broadband 6-bit GaAs IC digital attenuator in a 16 lead glass/metal (hermetic) surface mount package. Covering DC to 3 GHz, the insertion loss is less than 3 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ±0.5 dB typical step error with an IIP3 of +32 dBm. Six control voltage inputs, toggled between 0 and -5V, are used to select each attenuation state at less than 70 μA each. A single Vee bias of -5V allows operation at frequencies down to DC. Electrical Specifi cations, TA = +25° C, With Vee = -5V & Vctl = 0/-5V Typ. Max. Units Insertion Loss Parameter Frequency (GHz) DC - 3 GHz Min. 3.0 3.6 dB Attenuation Range DC - 3 GHz 31.5 dB Return Loss (RF1 & RF2, All Atten. States) DC - 3 GHz 12 dB DC - 2.0 GHz 2.0 - 3.0 GHz ± 0.4 + 4% of Atten. Setting Max ± 0.5 + 5% of Atten. Setting Max dB dB 1.0 - 3.0 GHz 22 dBm 1.0 - 3.0 GHz 46 32 dBm dBm 30 50 ns ns Attenuation Accuracy: (Referenced to Insertion Loss) All States All States Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON/tOFF (50% CTL to 10/90% RF) 5 - 98 REF State All Other States DC - 3 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 HMC424G16 v04.0709 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz 5 Return Loss RF1, RF2 (Only Major States are Shown) Insertion Loss 0.5 dB 1 dB 2 dB 4 dB -5 RETURN LOSS (dB) INSERTION LOSS (dB) -1 -2 -3 -4 +25C +85C -40C -5 8 dB 16 dB 31.5 dB -10 -15 -20 -6 -25 0 0.5 1 1.5 2 2.5 3 3.5 0 4 0.5 1 FREQUENCY (GHz) 1.5 2 2.5 3 3.5 4 28 32 3.5 4 FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) Bit Error vs. Attenuation State 2 -5 0.14 GHz 1 GHz 2 GHz 3 GHz 1 -10 -15 0 -20 0.5 dB 1 dB 2 dB 4 dB -25 -1 0.14 GHz 1 GHz 2 GHz 3 GHz 1 BIT ERROR (dB) BIT ERROR (dB) NORMALIZED ATTENUATION (dB) 02 8 dB 16 dB 31.5 dB 0 -1 -30 -2 -35 -2 0 4 0.5 8 1 12 1.5 16 2 20 2.5 24 3 28 3.5 32 4 0 4 8 ATTENUATION STATE FREQUENCY (GHz)(dB) 12 16 20 24 ATTENUATION STATE (dB) Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 3 100 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB 1 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB 80 RELATVIE PHASE (deg) 2 BIT ERROR (dB) ATTENUATORS - DIGITAL - SMT 0 0 0 -1 -2 60 40 20 0 -3 -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 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 - 99 HMC424G16 v04.0709 5 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz Worst Case Step Error Between Successive Attenuation States Bias Voltage & Current Vee Range= -5 Vdc ± 10% 1 STEP ERROR (dB) ATTENUATORS - DIGITAL - SMT 2 1.5 Vee (VDC) Iee (Typ.) (mA) Iee (Max.) (mA) -5 2 5 0.5 0 Control Voltage -0.5 -1 State Bias Condition -1.5 Low 0 to -3V @ 35 μA Typ. High -5 to -4.2V @ 5 μA Typ. -2 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) Truth Table Control Voltage Input Attenuation State RF1 - RF2 V1 16 dB V2 8 dB V3 4 dB V4 2 dB V5 1 dB V6 0.5 dB Low Low Low Low Low Low Reference I.L. Low Low Low Low Low High 0.5 dB Low Low Low Low High Low 1 dB Low Low Low High Low Low 2 dB Low Low High Low Low Low 4 dB Low High Low Low Low Low 8 dB High Low Low Low Low Low 16 dB High High High High High High 31.5 dB Any Combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 5 - 100 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 HMC424G16 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz Absolute Maximum Ratings Control Voltage (V1 to V6) Vee - 0.5 Vdc Bias Voltage (Vee) -7 Vdc Channel Temperature 150 °C Thermal Resistance 330 °C/W Storage Temperature -65 to + 150 °C Operating Temperature -55 to +85 °C RF Input Power (0.5 - 13.0 GHz) +25 dBm ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing 5 ATTENUATORS - DIGITAL - SMT v04.0709 NOTES: 1. PACKAGE MATERIAL: ALUMINA LOADED BOROSILICATE GLASS. 2. LEADS, BASE, COVER MATEIRAL: KOVARTM (#7052 CORNING). 3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN., OVER ELECTROLYTIC NICKEL 75 MICROINCHES MIN. 4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. TOLERANCES: 0.005 [.013] UNLESS OTHERWISE SPECIFIED. 6. CHARACTERS TO BE HELVETICA MEDIUM .030 HIGH, BLACK INK, LOCATED APPROX. AS SHOWN. 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: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 5 - 101 HMC424G16 v04.0709 ATTENUATORS - DIGITAL - SMT 5 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz Pin Descriptions Pin Number Function Description 1, 12-16 V1 - V6 See truth table and control voltage table. 2, 4-6, 8, 9, 11 GND Package bottom must also be connected to RF/DC ground. 3, 10 RF1, RF2 These pins are DC coupled and matched to 50 Ohm. Blocking capacitors are required if RF line is not equal to 0V. 7 Vee Supply Voltage -5V ±10% Interface Schematic 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 - V6 control lines. 5 - 102 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 HMC424G16 v04.0709 0.5dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 3 GHz 5 ATTENUATORS - DIGITAL - SMT Evaluation PCB List of Materials for Evaluation PCB 106566 [1] Item Description J1 - J2 PCB Mount SMA Connector J3 8 Pin DC Connector C1 0.01 μF Capacitor, 0603 Pkg. C2, C3 100 pF Capacitor, 0402 Pkg. R1 - R6 100 Ohm Resistor, 0603 Pkg. U1 HMC424G16 Digital Attenuator PCB [2] 106461 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB 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 package bottom 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. [2] Circuit Board Material: Rogers 4350 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 - 103