HMC941A v04.0818 0.5 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 30 GHz 1 Typical Applications Features 0.5 dB LSB Steps to 15.5 dB The HMC941A is ideal for: Single Positive Control Line Per Bit Fiber Optics & Broadband Telecom 0.5 dB Typical Bit Error Microwave Radio & VSAT High Input IP3: +45 dBm Military Radios, Radar & ECM Die Size: 2.29 mm x 0.96 mm x 0.1 mm Space Applications Functional Diagram General Description The HMC941A die is a broadband 5-bit GaAs IC digi- tal attenuator MMIC chip. Covering 0.1 to 30 GHz, the insertion loss is less than 4 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, for a total attenu- ation of 15.5 dB. Attenuation accuracy is excellent at less than 0.5 dB typical step error with an IIP3 of +45 dBm. Five control voltage inputs, toggled between +5V and 0V, are used to select each attenu- ation state. Electrical Specifications, T = +25 C, With Vdd = +5V, Vss = -5V & VCTL = 0/ +5V A Parameter Frequency (GHz) Min. Typ. Max. Units 0.1 - 18.0 GHz 3.1 4.3 dB Insertion Loss 18.0 - 30.0 GHz 4.2 5.1 dB Attenuation Range 0.1 - 30.0 GHz 15.5 dB Return Loss (RF1 & RF2, All Atten. States) 0.1 - 30.0 GHz 12 dB Attenuation Accuracy: (Referenced to Insertion Loss) 0.5 - 7.5 dB States 0.1 - 30.0 GHz (0.3 + 4% of Atten. Setting )Max dB 8 - 15.5 dB States 0.1 - 30.0 GHz (0.3 + 5% of Atten. Setting) Max dB 0.1 - 0.5 GHz 22 dBm Input Power for 0.1 dB Compression 0.5 - 30.0 GHz 26 dBm Input Third Order Intercept Point 0.1 - 0.5 GHz 45 dBm (Two-Tone Input Power= +8 dBm Each Tone) 0.5 - 30.0 GHz 43 dBm Switching Characteristics 0.1 - 30.0 GHz tRISE, tFALL (10/90% RF) 35 ns tON/tOFF (50% CTL to 10/90% RF) 50 ns Idd 0.1 - 30.0 GHz 3 5 7 mA Iss 0.1 - 30.0 GHz -4 -6 -8 mA Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 781-329-4700 Order online at www.analog.com 1 - 1 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D ATTENUATORS - CHIPHMC941A v04.0818 0.5 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 30 GHz Insertion Loss vs. Temperature Normalized Attenuation (Only Major States are Shown) 1 0 0 -1 -5 -2 -10 -3 -4 -15 -5 -20 -6 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 FREQUENCY (GHz) FREQUENCY (GHz) I.L 2 dB 15.5 dB 0.5 dB 4 dB +25 C +85 C -55 C 1 dB 8dB Input Return Loss Output Return Loss (Only Major States are Shown) (Only Major States are Shown) 0 0 -10 -10 -20 -20 -30 -30 -40 -40 -50 -50 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 FREQUENCY (GHz) FREQUENCY (GHz) IL 2 dB 15.5 dB 0.5 dB 4 dB IL 2 dB 15.5 dB 1 dB 8 dB 0.5 dB 4 dB 1 dB 8 dB Bit Error vs. Frequency (Only Major States are Shown) Bit Error vs. Attenuation State 1.5 1 0.8 1 0.6 0.4 0.5 0.2 0 0 -0.2 -0.5 -0.4 -0.6 -1 -0.8 -1.5 -1 0 5 10 15 20 25 30 35 40 0 4 8 12 16 FREQUENCY (GHz) ATTENUATION STATE (dB) I.L 2 dB 15.5 dB 0.5 dB 4 dB 10.0 GHz 30 GHz 1 dB 8 dB 20 GHz For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at www.analog.com 1 - 2 Application Support: Phone: 1-800-ANALOG-D BIT ERROR (dB) RETURN LOSS (dB) INSERTION LOSS (dB) BIT ERROR (dB) NORMALIZED ATTENUATION (dB) RETURN LOSS (dB) ATTENUATORS - CHIP