Transcription of Typical Applications Features - Analog Devices
1 For price, delivery, and to place orders, please contact Hittite Microwave Corporation:2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at - 1 BIAS CONTROLLERS - SMT13 HMC981LP3Ev 01. 0 411 General DescriptionACTIVE BIAS CONTROLLERF unctional DiagramTypical ApplicationsHMC981LP3E is an active bias controller that automatically adjusts the gate voltage of an external amplifier to achieve constant bias current. It can be used to bias any enhancement and depletion type amplifiers operating in Class-A regime with Drain voltages from 4V to 12V and drain currents up to 200mA, offering a complete biasing achieves excellent bias stability over supply, temperature and process variations.
2 And eliminates the required calibration procedures usually employed to prevent RF performance degradation due to such HMC981LP3E is housed in an RoHS compliant 3x3 mm QFN leadless package with an exposed backside pad to improve thermal characteristics. Microwave Radio & VSAT Military & Space Test Instrumentation Fiber Optic Modulator Driver Biasing CATV Laser Driver Biasing Cellular Base Station Wireless Infrastructure EquipmentFeaturesAutomatic Gate voltage adjustment (No Calibration required)Supply Voltage: 4V to 12 VDigital Voltage.
3 To 5 VControls both Enhancement and Depletion type devicesAdjustable Drain Current up to 200mASink/Source Gate Current CapabilityOptional Internal negative voltage generation that can be disabled to use external negative railFast Enable/DisableTrigger-out Output for Daisy Chain Power-Up and Power-Down Sequencing16 Lead 3x3 mm SMT Package: 9 mm 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.
4 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 -DFor price, delivery, and to place orders, please contact Hittite Microwave Corporation:2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at - 2 BIAS CONTROLLERS - SMT13 Electrical Specifications, TA = +25 C, VDD=8V, VDIG= , Depletion MasterUnless Otherwise NotedHMC981LP3Ev 01.
5 0 411 ACTIVE BIAS p . Voltage Vdd412 VVDD Quiescent CurrentIDDVDD = 4 VEN = VDIG7mAEN = GND3mAVDD = 8 VEN = VDIG7. 5mAEN = GND4mAVDIG Quiescent CurrentIDIGVDIG= V3mAVDIG= 5 V5mANegative Voltage FrequencyFOSC300kHzVoltage Input ThresholdENTHRSV inlow1 VVinhigh1. 4 VSwitch Input ThresholdSWTHRSV inlow1 VVinhigh1. 4 VShort Circuit Disable Input ThresholdDSCTHRSV inlow1 VVinhigh1. 4 VVDRAIN CharacteristicsDRAIN Current Adjustment RangeIDRAINSW=GND2080mASW=VDIG80200mADRA IN Current Change Over Digital Voltage IDRAINVVDRAIN set to 8V, IDRAIN set to 160 mA Current Change Over RangeVDRAIN412 VVDRAIN Change Over Temperature VDRAINVDRAIN set to 8V, IDRAIN set to 160 mA CharacteristicsNegative Voltage Current SinkINEGVDD= 4V08mAVDD= 8V015mAVGATE CharacteristicsGATE Current Low LevelVG_MINVNEGVVGATE High LevelVG_MAXVNEG+ CharacteristicsVG2 Current SupplyIG2VG2< 2 >1.
6 5V-11mAVG2 Adjustment VVDIG CharacteristicsAdjustment Quiescent CurrentIDIGVDD= 8 V, VDIG=EN = V3mASW CharacteristicsInternal Switch ResistanceRDS_ONSW= GND10 OhmSW=VDIG5 OhmInformation 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 .
7 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 -DFor price, delivery, and to place orders, please contact Hittite Microwave Corporation:2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at - 3 BIAS CONTROLLERS - SMT13 Load Regulation @ VDD=8V, SW=VDIG= vs.
8 VDIG[1][2]Load Regulation @ VDD=6V, VDIG= , SW= +25C+85C -40 CIDRAIN (mA)VDRAIN (V) +25C+85C -40 CIDRAIN (mA)VDRAIN (V)HMC981LP3Ev 01. 0 411 ACTIVE BIAS CONTROLLERVNEG Load Regulation @ VDD=4 VVNEG Line Regulation vs. Supply +25C+85C -40 CSUPPLY VOLTAGE (V)VNEG (V)No load +25C+85C -40 CINEG (mA)VNEG (V)VNEG Load Regulation @ VDD= +25C+85C -40 CINEG (mA)VNEG (V) +25C+85C -40 CVDIG (V)IDRAIN (mA)[1] IDRAIN is set to 53 mA[2] HMC465LP5 is used as external amplifierInformation furnished by Analog Devices is believed to be accurate and reliable.
9 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 -DFor price, delivery, and to place orders, please contact Hittite Microwave Corporation:2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at - 4 BIAS CONTROLLERS - SMT13 Enable WaveformHMC981LP3Ev 01.
10 0 411 ACTIVE BIAS CONTROLLER-8-6-4-202468024681012EN VDRAIN VG2 VNEGVGATE VOLTAGE (V)TIME (ms)Disable Waveform-8-6-4-2024681214161820 ENVDRAIN VG2 VNEGVGATEVOLTAGE (V)TIME (ms)Power Up Waveform-4-20246801020304050 VDDVDRAINVDIGVG2 VNEGVGATEVOLTAGE (V)TIME (ms)Shutdown Waveform-4-202468020406080100 VDDVDRAIN VDIGVG2 VNEGVGATEVOLTAGE (V)TIME (ms) (V)INEG (mA)TIME (ms) (V)INEG (mA)TIME (ms)VNEG Load Transient VDD=4 VVNEG Load Transient VDD=6 VInformation furnished by Analog Devices is believed to be accurate and reliable.
