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| MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Features Wide Bandwidth: DC - 4 GHz Attenuation Bits: 1, 2, 4, 8, 16 dB Miniature QSOP - 16 Package Typical Applications The HMC235QS16G is ideal for: * Cellular 2 ATTENUATORS - SMT * PCS, WLL, LMDS * IF applications. Functional Diagram General Description The HMC235QS16G is a broadband 5-bit digital attenuator in a 16 - lead (narrow pitch) surface mount QSOP plastic package with an exposed ground slug. This package occupies the same area as an 8 lead SOIC package. The 1, 2, 4 and 8 dB bits have less than 10 degrees relative phase shift. The five primary attenuation states can be activated independently, or collectively for attenuation levels of 1 to 31 dB. Electrical Specifications, TA = +25 C, With 0/-5V Control Parameter Insertion Loss Frequency DC - 2 GHz 2 - 4 GHz DC - 4 GHz DC - 2 GHz 2 - 4 GHz DC - 2 GHz 2 - 4 GHz 1 dB Bit 2 dB Bit 4 dB Bit 8 dB Bit 16 dB Bit All Bits (31 dB) 1 dB Bit 2 dB Bit 4 dB Bit 8 dB Bit 16 dB Bit All Bits (31 dB) tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 0.1 - 2 GHz 25 7 4 10 7 0.5 1.4 3.2 7.0 14.0 26.0 0.5 1.3 3.2 7.0 14.0 25.0 Min. Typical 5.0 5.3 31 12 7 18 11 1 2 4 8 16 31 1 2 4 8 16 31 3 6 8 7 18 7 24 23 38 22 12 11 24 12 28 30 44 32 1.5 2.6 4.8 9.0 17.9 35.0 1.5 2.7 4.8 9.0 17.9 35.0 Max. 5.4 6.0 Units dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB ns ns dBm dBm dBm dBm dBm dBm dBm dBm Attenuation Range Input Return Loss (All States) Output Return Loss (All States) Attenuation Accuracy: Attenuation Accuracy: 2 - 4 GHz Switching Characteristics DC - 4 GHz 0.05 GHz Min. Atten. State 0.05 GHz All Atten. States 0.5 - 4 GHz Min. Atten. State 0.5 - 4 GHz All Atten. States 0.05 GHz Min. Atten. State 0.05 GHz All Atten. States 0.5 - 4 GHz Min. Atten. State 0.5 - 4 GHz All Atten. States Input Power for 0.2 dB Compression Input Third Order Intercept Point Two-tone Input Power = +5 dBm Each Tone 2 - 42 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 Visit us at www.hittite.com, or Email at sales@hittite.com MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Insertion Loss 0 Relative Attenuation 0 RELATIVE ATTENUATION (dB) -5 -10 4 dB -15 8 dB 16 dB -25 -30 31 dB -35 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 2 dB 1 dB -1 INSERTION LOSS (dB) -2 -3 -40 C -4 -5 -6 +85 C -7 0 0.5 1 1.5 2 FREQUENCY (GHz) +25 C 2 ATTENUATORS - SMT 2 - 43 -20 FREQUENCY (GHz) Return Loss (Reference State) 0 INPUT RETURN LOSS RETURN LOSS (dB) Relative Phase 70 60 31 dB PHASE (DEGREES) 50 40 1, 2, 4 dB 30 16 dB 20 10 8 dB -10 -20 OUTPUT RETURN LOSS -30 -40 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) 0 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) Input Return Loss 0 31 dB INPUT RETURN LOSS (dB) 4 dB -10 Output Return Loss 0 OUTPUT RETURN LOSS (dB) -10 REF. STATE -20 REF. STATE -30 16 dB -20 4 dB -30 31 dB 2 dB -40 -40 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) 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 Visit us at www.hittite.com, or Email at sales@hittite.com MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Input Power for 0.2 dB Compression (Minimum Attenuation) 30 Input Power for 0.2 dB Compression (Maximum Attenuation) 30 0.2 dB COMPRESSION (dBm) -40 C 25 20 +25 C 15 10 5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 O O 2 ATTENUATORS - SMT 0.2 dB COMPRESSION (dBm) 25 -40 C 20 15 10 +85 C 5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 +25 C O O O +85 C O FREQUENCY (GHz) FREQUENCY (GHz) IP3 (Minimum Attenuation) 60 +85 C 50 40 -40 C 30 20 10 0 0 0.5 1 1.5 2 2.5 3 3.5 4 O O IP3 (Maximum Attenuation) 60 +25 OC 50 +85 C O IP3 (dBm) IP3 (dBm) 40 30 20 -40 C 10 0 0 0.5 1 1.5 2 2.5 3 3.5 4 O +25 C O FREQUENCY (GHz) FREQUENCY (GHz) 2 - 44 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 Visit us at www.hittite.com, or Email at sales@hittite.com MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Control Voltages State Low High Bias Condition 0 to -0.2 V @ 20 uA Max -3V @ 50 uA Typ to -8V @ 500 uA Max Truth Table Control Input 4 dB Bit A! High B1 Low Low Low High Low Low 1 dB A2 High Low High High High High 2 dB A3 High High Low High High High 8 dB Bit A4 High High High High Low High B4 Low Low Low Low High Low 16 dB Bit A5 High High High High High Low B5 Low Low Low Low Low High Ref Att Set 2 ATTENUATORS - SMT 2 - 45 Absolute Maximum Ratings Control Voltage Range Storage Temperature Operating Temperature RF Input Power (0.5 - 4 GHz) Insertion Loss State Any Attenuation State +0.5 to +8.5 Vdc -65 to +150 deg C High High Low High 1dB 2dB 4dB 8dB 16dB -40 to +85 deg C High +27 dBm +13 dBm Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. Outline Drawing 0.189/0.197 (4.80/5.00) EXPOSED GROUND SLUG (CONNECT TO RF GROUND PLANE) DATE CODE YY = YEAR 0.150/0.157 (3.81/3.99) HMC235 YYWW ZZZZ WW = WEEK 0.228/0.224 (5.76/6.20) LOT NUMBER 0.037 0.015 (0.94 0.38) 0.080 (2.03) PIN 1 PIN 1 0.105 (2.67) 0.044 0.015 (1.12 0.38) 0.051/0.059 (1.30 / 1.50) 0.0256 (.65) 0.010 (0.025) 0.000/0.004 (0.00/0.10) 0.004 / 0.010 (0.1 / 0.25) TYP 0.016 (0.41) MIN TYP 1. MATERIAL: A) PACKAGE BODY - LOW STRESS INJECTION - MOLDED PLASTIC. B) LEADFRAME AND SLUG MATERIAL: COPPER ALLOY. 2. PLATING: LEAD-TIN SOLDER PLATE. 3. DIMENSIONS ARE IN INCHES (MILLIMETERS), UNLESS OTHERWISE SPECIFIED TOL. ARE 0.005 ( 0.13). 4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE. 5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE. 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 Visit us at www.hittite.com, or Email at sales@hittite.com MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Suggested Driver Circuit Vz=5.1V 100 * Izt=50uA COMPENSATED DEVICES CD4689 100pF * 2 ATTENUATORS - SMT TTL OR CMOS Ax GaAs ATTENUATOR CONTROL VCC GND VCC GND 74HCT04 (TTL) 74HC04 (CMOS) 100* 10K Bx 100pF* -5 VDC Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. *Recommended values to suppress unwanted RF signals at Ax/Bx control lines. Component values may be adjusted for switching speed considerations. 2 - 46 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 Visit us at www.hittite.com, or Email at sales@hittite.com MICROWAVE CORPORATION v01.0801 HMC235QS16G 1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz Evaluation Circuit Board 2 ATTENUATORS - SMT 2 - 47 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. Evaluation Circuit Board Layout Design Details Layout Technique Material Dielectric Thickness 50 Ohm Line Width Gap to Ground Edge Ground VIA Hole Diameter Connectors Ground Co-Planar Waveguide (GCPW) Rogers 4350 0.020" (0.51 mm) 0.034" (0.86 mm) 0.010" (0.25 mm) 0.014" (0.36 mm) SMA-F (EF - Johnson P/N 142-0701-806) 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 Visit us at www.hittite.com, or Email at sales@hittite.com |
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