HMC939A v02.0119 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 40 GHz Typical Applications Features t he h MC939A is ideal for: 1.0 dB ls B s teps to 31 dB Fiber o ptics & Broadband t elecom single p ositive Control l ine per Bit Microwave r adio & Vs At 1.0 dB t ypical Bit error Military r adios, r adar & eCM h igh input ip 3: +43 dBm space Applications Die s ize: 2.34 x 1.0 x 0.1 mm Functional Diagram General Description t he hMC939A die is a broadband 5-bit gaAs iC digital attenuator MMiC chip. Covering 0.1 to 40 gh z, 2 3 4 5 6 7 8 the insertion loss is less than 5 dB typical. t he P0 P1 P2 P3 P4 VDD VSS attenuator bit values are 1.0 (ls B), 2, 4, 8, 16 for a total attenuation of 31 dB. Attenuation accuracy is 11 10 excellent at less than 1.0 dB typical step error with an iip3 of +43 dBm. Five control voltage inputs, 1 9 RF1 RF2 toggled between +5V and 0V, are used to select each attenuation state. Electrical Specifications, T = +25 C, With Vdd = +5V, Vss = -5V & VCTL = 0/ +5V A parameter Frequency (gh z) Min. typ. Max. u nits 0.1 - 18 gh z 4.3 5.0 dB insertion l oss 18 - 40 gh z 7.0 7.8 dB Attenuation r ange 0.1 - 40 gh z 31 dB r eturn l oss (r F1, All Atten. s tates) 0.1 - 40 gh z 10 dB (r F2, All Atten. s tates) 0.1 - 40 gh z 12 Attenuation Accuracy: (r eferenced to insertion l oss) All states 0.1 - 20 gh z 0.5 + 3% of Atten. s etting Max dB 0.1 - 15 dB 20 - 40 gh z 0.5 + 5% of Atten. s etting Max dB 16 - 31 dB 20 - 40gh z 0.6 + 6% of Atten. s etting Max dB 0.1 - 0.5 gh z 21 dBm input power for 0.1 dB Compression 0.5 - 40.0 gh z 24 dBm input t hird o rder intercept p oint 0.1 - 0.5 gh z 43 dBm (t wo-t one input power= 8 dBm each t one) 0.5 - 40.0 gh z 40 dBm s witching Characteristics 0.1 - 40 gh z trise , tFAll (10/90% rF) 50 ns ton /to FF (50% Ctl to 10/90% r F) 70 ns idd 0.1 - 40 gh z 3 5 7 mA iss 0.1 - 40 gh z -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 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 Attenu Ators - Digit Al - Chip 1dB 2dB 4dB 8dB 16dBHMC939A v02.0119 1.0 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, 0.1 - 40 GHz Normalized Attenuation (o nly Major states are s hown) Insertion Loss vs. Temperature 0 0 -1 -5 -2 -10 -3 -15 -4 -20 -5 -25 -6 -30 -7 -35 -8 -40 -9 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 FREQUENCY (GHz) FREQUENCY (GHz) I.L 4 dB 31 dB 1 dB 8 dB +25 C +85 C -55 C 2 dB 16 dB Input Return Loss Output Return Loss (o nly Major states are s hown) (o nly Major states are s hown) 0 0 -10 -10 -20 -20 -30 -30 -40 -40 -50 -50 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 FREQUENCY (GHz) FREQUENCY (GHz) IL 4dB 31 dB IL 4 dB 31 dB 1 dB 8 dB 1 dB 8 dB 2 dB 16 dB 2 dB 16 dB Bit Error vs. Frequency (o nly Major states are s hown) Bit Error vs. Attenuation State 2 3 1.6 2 1 1.2 0 0.8 -1 0.4 -2 0 -3 -0.4 -4 -0.8 -5 -1.2 -6 -1.6 -7 -2 -8 0 4 8 12 16 20 24 28 32 0 5 10 15 20 25 30 35 40 45 50 FREQUENCY (GHz) ATTENUATION STATE (dB) I.L 4dB 31 dB 1.0 GHz 20 GHz 40 GHz 1 dB 8 dB 10 GHz 30 GHz 2dB 16 dB 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 2 Application Support: Phone: 1-800-ANALOG-D RETURN LOSS (dB) INSERTION LOSS (dB) BIT ERROR (dB) NORMALIZED ATTENUATION (dB) BIT ERROR (dB) RETURN LOSS (dB) Attenu Ators - Digit Al - Chip