HMC290 / 290E v01.0605 ATTENUATORS - SMT 6 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz Typical Applications Features The HMC290 / HMC290E is ideal for: 2 dB LSB Steps to 6 dB • Cellular Single Positive Control Per BIT • PCS, ISM, MMDS +/-0.2 dB Typical Bit Error • WLL Handset & BaseStation Miniature SOT 26 Package: 9 mm2 Functional Diagram General Description The HMC290 & HMC290E are broadband 2 - bit positive control GaAs IC digital attenuators in 6 lead SOT26 surface mount plastic packages. Covering 0.7 to 4 GHz, the insertion loss is typically less than 0.7 dB. The attenuator bit values are 2 (LSB) and 4 dB for a total attenuation of 6 dB. Accuracy is excellent at ± 0.2 dB typical with an IIP3 of up to +52 dBm. Two bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state at less than 50 uA each. A single Vdd bias of +3 to +5 volts applied through an external 5K Ohm resistor is required. Occupying less than 9 mm2, this is the smallest 2 - bit digital attenuator available. Electrical Specifications, TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated) Parameter Frequency Insertion Loss 0.7 - 1.4 GHz 1.4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 4.0 GHz Attenuation Range 0.7 - 4.0 GHz Return Loss (RF1 & RF2, All Atten. States) 0.7 - 2.7 GHz 2.7 - 4.0 GHz Min. 16 15 Typical Max. Units 0.5 0.5 0.6 0.8 0.7 0.8 0.9 1.2 dB dB dB dB 6 dB 20 18 dB dB Attenuation Accuracy: (Referenced to Insertion Loss) 2, 4 dB States 6 dB States 0.7 - 4.0 GHz 0.7 - 4.0 GHz ± 0.2 + 2% of Atten. Setting Max ± 0.3 + 2% of Atten. Setting Max dB dB Input Power for 0.1 dB Compression 5V 3V 0.7 - 4.0 GHz 27 24 dBm dBm Input Third Order Intercept Point (Two-tone Input Power = 0 dBm Each Tone) 5V 3V 0.7 - 4.0 GHz 52 50 dBm dBm 0.7 - 4.0 GHz 400 420 ns ns Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 6 - 40 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 HMC290 / 290E v01.0605 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz Return Loss RF1, RF2 0 -0.25 -5 -0.5 -0.75 -1 +25 C -40 C +85 C -1.25 -1.5 0.5 1 1.5 2 6 2 dB 4 dB 6 dB -10 -15 -20 -25 2.5 3 3.5 -30 0.5 4 1 1.5 3 3.5 4 1 0 -1 0.75 -2 BIT ERROR (dB) NORMALIZED ATTENUATION (dB) 2.5 Absolute Bit Error vs. Attenuation State Normalized Attenuation -3 -4 -5 0.9 GHz 2.4 GHz 1.9 GHz 3.5 GHz 0.5 0.25 -6 2 dB 4 dB 6 dB -7 -8 0.5 0 1 1.5 2 2.5 3 3.5 2 4 4 FREQUENCY (GHz) 6 ATTENUATION STATE (dB) Relative Phase vs. Frequency Absolute Bit Error vs. Frequency 20 RELATIVE PHASE (deg.) 1 2 dB 4 dB 6 dB 0.75 BIT ERROR (dB) 2 FREQUENCY (GHz) FREQUENCY (GHz) ATTENUATORS - SMT 0 RETURN LOSS (dB) INSERTION LOSS (dB) Insertion Loss 0.5 0.25 2 dB 4 dB 6 dB 15 10 5 0 -5 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) 3 3.5 4 -10 0.5 1 1.5 2 2.5 3 3.5 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: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com 6 - 41 HMC290 / 290E v01.0605 Truth Table ATTENUATORS - SMT 6 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz Control & Bias Voltages Control Voltage Input V2 4 dB V1 2 dB Attenuation Setting RF1 - RF2 High High Reference I.L. High Low 2 dB Low High 4 dB Low Low 6 dB Max. Atten. State Bias Condition Low 0 to + 0.2V @ 20 uA Max High Vdd ± 0.2V @ 50 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 throught either PIN 3 or PIN 1. 6 - 42 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 HMC290 / 290E v01.0605 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 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 - 4 GHz) +28 dBm 6 ATTENUATORS - SMT Control Voltage (V1, V2) 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 Package Body Material Lead Finish MSL Rating HMC290 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC290E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] H290 XXXX [2] 290E 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 6 - 43 HMC290 / 290E v01.0605 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz Evaluation Circuit Board ATTENUATORS - SMT 6 * R2 = R3 = 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 103372 Item Description J1 - J2 PCB Mount SMA Connector J3 - J6 DC Pin R1 5k Ohm Resistor, 0402 Chip R2, R3 100 Ohm Resistor, 0402 Chip C1, C2 0402 Chip Capacitor, Select for Lowest Frequency of Operation U1 HMC290 / HMC290E Digital Attenuator PCB [2] 103370 Evaluation PCB 1.5” x 1.5” [1] 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 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 as shown is available from Hittite Microwave Corporation upon request. [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 6 - 44 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 HMC290 / 290E v01.0605 2 dB LSB GaAs MMIC 2-BIT DIGITAL ATTENUATOR, 0.7 - 4.0 GHz Notes: ATTENUATORS - SMT 6 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 6 - 45