HMC230MS8 / 230MS8E v02.0505 ATTENUATORS - SMT 5 4 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 GHz Typical Applications Features The HMC230MS8 / HMC230MS8E is ideal for: 4 dB LSB Steps to 28 dB * Cellular Single Positive Control Per Bit * PCS, ISM, MMDS 0.5 dB Typical Bit Error * WLL Handset * Base Station Infrastructure Pin - For - Pin Replacement to AA100-59 Digital Attenuator Functional Diagram General Description The HMC230MS8 & HMC230MS8E are broadband 3 - bit positive control GaAs IC digital attenuators in 8 lead MSOP surface mount plastic packages. Covering 0.75 to 2 GHz, the insertion loss is typically less than 2 dB. The attenuator bit values are 4 (LSB), 8, and 16 dB for a total attenuation of 28 dB. Accuracy is excellent at 0.5 dB typical with an IIP3 of up to +48 dBm. Three 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. Electrical Specifi cations, TA = +25 C, Vdd = +3V to +5V & Vctl = 0/Vdd (Unless Otherwise Stated) Parameter Frequency Min. Insertion Loss 0.75 - 1.7 GHz 1.7 - 2.0 GHz Attenuation Range 0.75 - 2.0 GHz Return Loss (RF1 & RF2, All Atten. States) 0.75 - 1.7 GHz 1.7 - 2.0 GHz 10 13 Typical Max. Units 1.6 1.8 1.8 2.1 dB dB 28 dB 13 16 dB dB 0.75 - 1.4 GHz 0.75 - 1.4 GHz 1.40 - 2.0 GHz 0.3 + 3% of Atten. Setting Max 0.4 + 6% of Atten. Setting Max 0.3 + 3% of Atten. Setting Max dB dB dB Attenuation Accuracy: (Reference to Insertion Loss) 4, 8, 12, 16, 20 dB States 24, 28 dB States All Attenuation States Input Power for 0.1 dB Compression 5V 3V 0.75 - 2.0 GHz 20 19 dBm dBm Input Third Order Intercept (Two-Tone Input Power = 0 dBm Each) 5V 3V 0.75 - 2.0 GHz 46 45 dBm dBm 0.75 - 2.0 GHz 560 600 ns ns Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 5-8 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 HMC230MS8 / 230MS8E v02.0505 4 dB LSB GaAs IC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 GHz 5 Return Loss RF1, RF2 Insertion Loss (Only Major States are Shown) -5 +25C -40C +85C -1 RETURN LOSS (dB) INSERTION LOSS (dB) -0.5 -1.5 -2 16, 28 dB -10 4 dB -15 -20 -2.5 8 dB -3 0.75 1 1.25 1.5 1.75 -25 0.75 2 1 FREQUENCY (GHz) 1.25 1.5 1.75 2 FREQUENCY (GHz) Normalized Attenuation Bit Error vs. Attenuation State 0 3 -5 2 -10 BIT ERROR (dB) NORMALIZED INSERTION LOSS (dB) (Only Major States are Shown) -15 -20 4 dB 8 dB 16 dB 28 dB -25 1 0 0.9 GHz 1.9 GHz -1 -30 -35 0.75 -2 1 1.25 1.5 1.75 2 4 8 12 FREQUENCY (GHz) 16 20 Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 28 60 4 RELATIVE PHASE (deg.) 3 2 1 0 -1 4 dB 8 dB 16 dB 28 dB -2 40 20 0 -20 4 dB 8 dB 16 dB 28 dB -40 -3 -4 0.75 24 ATTENUATION STATE (dB) Bit Error vs. Frequency BIT ERROR (dB) ATTENUATORS - SMT 0 0 1 1.25 1.5 FREQUENCY (GHz) 1.75 2 -60 0.75 1 1.25 1.5 1.75 2 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 5-9 HMC230MS8 / 230MS8E v02.0505 4 dB LSB GaAs IC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 GHz ATTENUATORS - SMT 5 Control & Bias Voltages State Bias Condition Low 0 to +0.2Vdc @ 20 uA Max High Vdd 0.2V @ 50 uA Typ Truth Table Control Voltage Input Note: Vdd = +3V to +5V 0.2V Attenuation Setting RF1 - RF2 V1 16 dB V2 4 dB V3 8 dB High High High Reference I.L. High Low High 4 dB High High Low 8 dB Low High High 16 dB Low Low Low 28 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 ~ 300 pF 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 1 or PIN 5. 5 - 10 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 HMC230MS8 / 230MS8E 4 dB LSB GaAs IC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 GHz 5 Absolute Maximum Ratings Control Voltage (V1, V2, V3) Vdd to +0.5 Vdc Bias Voltage (Vdd) +8.0 Vdc Storage Temperature -65 to +150 C Operating Temperature -40 to +85 C RF Input Power (0.75 - 2 GHz) +26 dBm ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing ATTENUATORS - SMT v02.0505 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 HMC230MS8 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC230MS8E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] H230 XXXX [2] H230 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 - 11 HMC230MS8 / 230MS8E v02.0505 4 dB LSB GaAs IC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 GHz Evaluation Circuit Board ATTENUATORS - SMT 5 *R2 = R3 = R4 = 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 103155 [1] Item Description J1 - J2 PCB 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 HMC230MS8 / HMC230MS8E Digital Attenuator PCB [2] 103153 Evaluation PCB 1.25" 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 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 5 - 12 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 HMC230MS8 / 230MS8E v02.0505 4 dB LSB GaAs IC 3-BIT DIGITAL ATTENUATOR, 0.75 - 2.0 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 - 13