Functional Diagram General Description - Analog …

1 ATTENUATORS - DIGITAL - CHIP11 - 8 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 Order On-line at LSB GaAs MMIC 6-BIT DIGITALATTENUATOR, DC - 13 Specifi cations, TA = +25 C, With Vee = -5V & VCTL = 0/-5 VThe HMC424 is ideal for: Fiber Optics & Broadband Telecom Microwave Radio & VSAT Military Radios, Radar & ECM Space dB LSB Steps to dBSingle Control Line Per Bit dB Typical Bit ErrorDie Size: x x mmThe HMC424 die is a broadband 6-bit GaAs IC digital attenuator MMIC chip. Covering DC to 13 GHz, the insertion loss is less then 4 dB typical. The attenua-tor bit values are (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of dB.

2 Attenuation accuracy is excellent at dB typical step error with an IIP3 of +32 dBm. Six control voltage inputs, toggled bet-ween 0 and -5V, are used to select each attenuation state. A single Vee bias of -5V allows operation at fre-quencies down to (GHz) LossDC - - RangeDC - Loss (RF1 & RF2, All Atten. States)DC - - GHz8111215dBdBAttenuation Accuracy: (Referenced to Insertion Loss) - dB States8 - dB States DC - GHzDC - GHz + 4% of Atten. Setting Max + 6% of Atten. Setting MaxdBdBInput Power for dB - Ghz22dBmInput Third Order Intercept Point(Two-Tone Input Power= 0 dBm Each Tone)REF StateAll Other - Ghz4632dBmdBmSwitching CharacteristicstRISE, tFALL (10/90% RF)tON/tOFF (50% CTL to 10/90% RF)DC - GHz3050nsnsGeneral DescriptionFeaturesFunctional DiagramTypical ApplicationsInformation furnished by Analog Devices is believed to be accurate and reliable.

3 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 price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Application Support: Phone: 1-800- Analog -DOBSOLETEATTENUATORS - DIGITAL - CHIP11 - 9 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 Order On-line at Loss RF1, RF2(Only Major States are Shown)Insertion LossNormalized Attenuation(Only Major States are Shown)Bit Error vs.

4 Frequency(Only Major States are Shown)Relative Phase vs. Frequency(Only Major States are Shown)Bit Error vs. Attenuation State-10-8-6-4-2003691215+25 C+85 C -55 CINSERTION LOSS (dB)FREQUENCY (GHz)-25-20-15-10-5003691215 dB 1 dB 2 dB 4 dB 8 dB 16 dBRETURN LOSS (dB)FREQUENCY (GHz) dB 1 dB 2 dB 4 dB 8 dB 16 dBNORMALIZED ATTENUATION (dB)FREQUENCY (GHz) GHz 4 GHz 8 GHz 13 GHzBIT ERROR (dB)ATTENUATION STATE (dB) dB 1 dB 2 dB 4 dB 8 dB 16 dBBIT ERROR (dB)FREQUENCY (GHz)-2002040608010003691215 dB 1 dB 2 dB 4 dB 8 dB 16 dBRELATIVE PHASE (deg)FREQUENCY (GHz) LSB GaAs MMIC 6-BIT DIGITALATTENUATOR, DC - 13 GHzInformation furnished by Analog Devices is believed to be accurate and reliable.

5 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 price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Application Support: Phone: 1-800- Analog -DOBSOLETEATTENUATORS - DIGITAL - CHIP11 - 10 For price, delivery, and to place orders, please contact Hittite Microwave Corporation:20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax.

6 978-250-3373 Order On-line at TableControl VoltageBias Voltage & CurrentWorst Case Step ErrorBetween Successive Attenuation StatesAbsolute Maximum RatingsControl Voltage InputAttenuation StateRF1 - RF2V116 dBV28 dBV34 dBV42 dBV51 dBLowLowLowLowLowLowReference dBLowLowLowLowHighLow1 dBLowLowLowHighLowLow2 dBLowLowHighLowLowLow4 dBLowHighLowLowLowLow8 dBHighLowLowLowLowLow16 dBAny Combination of the above states will providean attenuation approximately equal to the sum ofthe bits ConditionLow0 to -3V @ 35 A to Vee + @ 5 A Range= -5 Vdc 10%Vee(Vdc)Iee (Typ.)(mA)Iee (Max.)(mA)-525 Control Voltage (V1 to V6)Vee - VdcBias Voltage (Vee)-7 VdcChannel Temperature150 CThermal Resistance330 C/WStorage Temperature-65 to + 150 COperating Temperature-55 to +85 CRF Input Power ( - 13 GHz)+25 dBmELECTROSTATIC SENSITIVE DEVICEOBSERVE HANDLING PRECAUTIONSDie Packaging Information [1]StandardAlternateWP-8 (Waffle Pack)[2][1] Refer to the Packaging Information section for die packaging dimensions.

7 [2] For alternate packaging information contact Hittite Microwave ERROR (dB)FREQUENCY (GHz) LSB GaAs MMIC 6-BIT DIGITALATTENUATOR, DC - 13 GHzInformation 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 price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Application Support: Phone: 1-800- Analog -DOBSOLETEATTENUATORS - DIGITAL - CHIP11 - 11 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 Order On-line at Drawing1.

8 ALL DIMENSIONS ARE IN INCHES (MILLIMETERS).2. TYPICAL BOND PAD IS .004 TYPICAL BOND PAD SPACING IS .006 CENTER TO CENTER EXCEPT AS BACKSIDE METALIZATION: GOLD5. BACKSIDE METAL IS GROUND6. BOND PAD METALIZATION: GOLDPad NumberFunctionDescriptionInterface SchematicGNDDie bottom must be connected to RF , 3RF1, RF2 This pad is DC coupled and matched to 50 Ohm. Blocking capacitors are required if RF line potential is not equal to Voltage -5V 10%4, 5, 6, 7, 8, 9V1 - V6 See truth table and control voltage LSB GaAs MMIC 6-BIT DIGITALATTENUATOR, DC - 13 GHzInformation 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.

9 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 price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Application Support: Phone: 1-800- Analog -DOBSOLETEATTENUATORS - DIGITAL - CHIP11 - 12 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 Order On-line at Driver Circuit (One Circuit Required Per Bit Control Input)Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current.

10 * Recommended value to suppress unwanted RF signals at V1 - V6 control LSB GaAs MMIC 6-BIT DIGITALATTENUATOR, DC - 13 GHzInformation 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 price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Application Support: Phone: 1-800- Analog -DOBSOLETEATTENUATORS - DIGITAL - CHIP11 - 13 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 Order On-line at & Bonding Techniques for Millimeterwave GaAs MMICsThe die should be attached directly to the ground plane eutectically or with conductive epoxy (see HMC General Handling, Mounting, Bonding Note).