= +25 C, With Vee = -5V & Vctl = 0/-5V

Transcription

1 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Typical Applications Features The HMC44AG6 is ideal for: Telecom Infrastructure Military Radios, Radar & ECM Space Applications Test Instrumentation Functional Diagram.5 db LSB Steps to 3.5 db Single Control Line Per Bit ±.5 to ±. Typical Bit Error 6 Lead Hermetic SMT Package General Description The HMC44AG6 is a broadband 6-bit GaAs IC digital attenuator in a 6 lead glass/metal (hermetic) surface mount package. Covering DC to 3 GHz, the insertion loss is less than 3 db typical. The attenuator bit values are.5 (LSB),,, 4, 8, and for a total attenuation of 3.5 db. Attenuation accuracy is excellent at ±.5 db typical step error with an IIP3 of +3m. Six control voltage inputs, toggled between and -5V, are used to select each attenuation state at less than 7 µa each. A single Vee bias of -5V allows operation at frequencies down to DC. Electrical Specifications, T A = +5 C, With Vee = -5V & Vctl = /-5V Parameter Frequency (GHz) Min. Typ. Max. Units Insertion Loss DC - 3 GHz db Attenuation Range DC - 3 GHz 3.5 db Return Loss (RF & RF, All Atten. States) DC - 3 GHz Attenuation Accuracy: (Referenced to Insertion Loss) All States All States DC -. GHz GHz ±.4 + 4% of Atten. Setting Max ±.5 + 5% of Atten. Setting Max db db Input Power for. Compression GHz 7 dbm Input Third Order Intercept Point (Two-Tone Input Power= dbm Each Tone) Switching Characteristics REF State All Other States GHz DC - 3 GHz dbm dbm trise, tfall (/9% RF) ton/toff (5% CTL to /9% RF) 3 5 ns ns Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No 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. For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D

2 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Insertion Loss Return Loss RF, RF INSERTION LOSS (db) C +85C -4C Normalized Attenuation NORMALIZED ATTENUATION (db) RETURN LOSS (db) db Bit Error vs. Attenuation State BIT ERROR (db) db ATTENUATION STATE (db).5 db 3.5 db.4 GHz GHz GHz 3 GHz Bit Error vs. Frequency 3 Relative Phase vs. Frequency 8 BIT ERROR (db) - RELATVIE PHASE (deg) db 3.5 db.5 db 3.5 db For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D

3 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Step Error vs Frequency (Major States) STEP ERROR (db) Truth Table V V Control Voltage Input V3 V4 V5 V6.5 db Low Low Low Low Low Low Attenuation State RF - RF Reference I.L. Low Low Low Low Low High.5 db Low Low Low Low High Low Low Low Low High Low Low Bias Voltage & Current Vee Range= -5 Vdc ± % Vee (VDC) Iee (Typ.) (ma) Iee (Max.) (ma) Control Voltage State Bias Condition Low to 35 µa Typ. High -5 to -4.V < µa Typ. Low Low High Low Low Low Low High Low Low Low Low High Low Low Low Low Low High High High High High High 3.5 db Any Combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 3 For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D

4 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Absolute Maximum Ratings Max RF Power Input (.5-3 GHz) Bias Voltage (Vdd) Digital Inputs Outline Drawing dbm -7 Vdc Vee-.5V Channel Temperature 5 C Continuos Pdiss (T=85 C) Thermal Resistance(+85 base, 3dBm max atten.) Thermal Resistance (+85 atten.).8 W 7 C/W 45.3 C/W Storage Temperature -65 to 5 C Operating Temperature -4 to +85 C ESD Sensitivity (HBM) ESD Sensitivity (HBM) Class A Class A ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS. Package Information Part Number Package Body Material Package Marking HMC44AG6 ALUMINA LOADED BOROSILICATE GLASS HMC44A Max peak reflow temperature of 6 C For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D 4

5 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Pin Descriptions Pin Number Function Description Interface Schematic, -6 V - V6 See truth table and control voltage table., 4-6, 8, 9, GND 3, RF, RF Package bottom must also be connected to RF/DC ground. These pins are DC coupled and matched to 5 Ohm. Blocking capacitors are required if RF line is not equal to V. 7 Vee Supply Voltage -5V ±% Suggested Driver Circuit (One Circuit Required Per Bit Control Input) Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current. * Recommended value to suppress unwanted RF signals at V - V6 control lines. 5 For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D

6 v.46.5db LSB GaAs MMIC 6-BIT DIGITAL Evaluation PCB List of Materials for Evaluation PCB EVHMC44AG6 [] Item J - J J3 C Description PCB Mount SMA Connector 8 Pin DC Connector. µf Capacitor, 63 Pkg. C, C3 pf Capacitor, 4 Pkg. R - R6 U PCB [] Ohm Resistor, 63 Pkg. HMC44AG6 Digital Attenuator 646 Evaluation PCB [] Reference this number when ordering complete evaluation PCB [] Circuit Board Material: Rogers 435 The circuit board used in the application should use RF circuit design techniques. Signal lines should have 5 Ohm impedance while the package ground leads and package bottom 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 shown is available from Analog Devices upon request. For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 96, Norwood, MA 6-96 Phone: Order online at Application Support: Phone: -8-ANALOG-D 6