HMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz 5 Typical Applications Features The HMC539LP3 / HMC539LP3E is ideal for both RF 0.25 dB LSB Steps to 7.75 dB and IF applications: 0.05 dB Typical Step Error Cellular Infrastructure Low Insertion Loss: 0.7 dB ISM, MMDS, WLAN, WiMAX, WiBro High IP3: +50 dBm Microwave Radio & VSAT Single Control Line Per Bit TTL/CMOS Compatible Control Test Equipment and Sensors Single +5V Supply Functional Diagram 3x3 mm SMT Package General Discription The HMC539LP3 & HMC539LP3E are broadband 5-bit GaAs IC digital attenuators in low cost lead- less surface mount packages. This single positive control line per bit digital attenuator utilizes an off chip AC ground capacitor for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 4 GHz, the insertion loss is less than 0.7 dB typical. The attenuator bit values are 0.25 (LSB), 0.5, 1, 2, and 4 dB for a total attenu- ation of 7.75 dB. Attenuation accuracy is excellent at 0.05 dB typical step error. The attenuator also features a high IIP3 of +50 dBm. Five TTL/CMOS control inputs are used to select each attenuation state. A single Vdd bias of +5V is required. Electrical Specifi cations, T = +25 C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) A Parameter Frequency (GHz) Min. Typ. Max. Units DC - 1.5 GHz 0.7 1.0 dB Insertion Loss 1.5 - 3.0 GHz 1.0 1.3 dB 3.0 - 4.0 GHz 1.3 1.7 dB Attenuation Range DC - 4 GHz 7.75 dB DC - 3 GHz 25 dB Return Loss (RF1 & RF2, All Atten. States) 3.0 - 4.0 GHz 20 dB Attenuation Accuracy: DC - 3 GHz (0.2 + 2% of Atten. Setting) Max. dB All States (Referenced to Insertion Loss) 3.0 - 4.0 GHz (0.2 + 4% of Atten. Setting) Max. dB Input Power for 0.1 dB Compression 0.1 - 4.0 GHz 28 dBm Input Third Order Intercept Point 0.1 - 4.0 GHz 50 dBm (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics DC - 4 GHz tRISE, tFALL (10/90% RF) 48 ns tON, tOFF (50% CTL to 10/90% RF) 52 ns 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 5 - 164 Order On-line at www.hittite.com OBSOLETE ATTENUATORS - SMTHMC539LP3 / 539LP3E v00.0605 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4 GHz Return Loss RF1, RF2 5 (Only Major States are Shown) Insertion Loss 0 0 -0.5 -9 4 dB 7.75 dB I.L.dB -1 -18 0.25 dB 0.5 dB 2 dB 1 dB -1.5 -27 +25 C -2 +85 C -40 C -36 -2.5 -3 -45 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 FREQUENCY (GHz) FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) Bit Error vs. Attenuation State 0 0.5 -2 3 GHz 4 GHz 40 MHz 0.25 -4 0 -6 100 MHz 2 GHz -0.25 -8 1 GHz 500 MHz -10 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 01234567 8 FREQUENCY (GHz) ATTENUATION STATE (dB) Bit Error vs. Frequency Relative Phase vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 0.35 20 15 0.25 7.75 dB 10 4 dB 0.15 0.5 dB 5 2 dB 0.25 dB 0.05 0 -5 -0.05 -10 0.25-1 dB -0.15 -15 2 dB 4 dB 1 dB 7.75 dB -0.25 -20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 FREQUENCY (GHz) 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 5 - 165 Order On-line at www.hittite.com OBSOLETE BIT ERROR (dB) NORMALIZED ATTENUATION (dB) INSERTION LOSS (dB) RELATIVE PHASE (deg) RETURN LOSS (dB) BIT ERROR (dB) ATTENUATORS - SMT