HMC920LP5E v07.1013 ACTIVE BIAS CONTROLLERGeneral Description HMC920LP5E is an active bias control er which generates a regulated Drain voltage and actively 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 (VDRAIN) from 3V to 15V and drain currents (IDRAIN) up to 500mA, offering a complete biasing solution. HMC920LP5E achieves excel ent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures used to prevent RF performance degradation due to such variations. The HMC920LP5E is housed in an RoHS compliant 5x5 mm QFN leadless package with an exposed backside pad to improve thermal characteristics. Electrical Specifications, T = +25°C, Vdd = Vdd1 = Vdd2 = 15VA Parameter Symbol Conditions Min. Typ. Max. Units Supply Voltage Vdd 5 16.5 V 13 EN = Vdig 35 mA Vdd = 5V EN = GND 20 mA Quiescent Current IDD EN = Vdig 35 mA T Vdd = 15V EN = GND 20 mA M Negative Voltage Output VNEG -2.5 V Oscillator Frequency FOSC 250 kHz Bandgap Reference VBGC 2 V T - S VDIG Feedback VDIGFB 2.5 V N LDOCC Feedback LDOFB 2 V E Vinlow 1 V M Enable Input Threshold ENTHRS Vinhigh 1.4 V E Vinlow 1 V ALMTRIG Input Threshold ALMTRIG G Vinhigh 1.4 V A Low Vdd Alarm Threshold VddCHK 3.8 V N VDRAIN Characteristics A DRAIN Current Adjustment Range IDRAIN 0 500 mA DRAIN Current Change Over Supply Voltage VDRAIN set to 6V, 0.05 %/V ΔIDRAINV IDRAIN set to 100mA, R M DRAIN Current Change Over Temperature 0.03 %/C E DRAIN Adjustment Range VDRAIN 3 15 V VDRAIN Change Over Supply Voltage 0.05 %/V W VDRAIN set to 6V, ΔVDRAIN IDRAIN set to 100mA, VDRAIN Change Over Temperature 0.008 %/C O VNEG Characteristics Negative Voltage Output VNEG -2.5 V C P VNEG Current Sink INEG 0 60 mA D VGATE Characteristics GATE Current Supply IG -4 4 mA VGATE Low Level VG_MIN VNEG V VGATE High Level VG_MAX VNEG+4.5 V VDIG Characteristics Adjustment Range VDIG 3.5 5 V VDIG Current Source IDIG 30 mA Information furnish F e o d r p by A rnic alo e g , d Devi ecleis vie s rby eli, a eve nd t d to b o p e a l cc a ur c at e o e an r d d releiars ble , p . Ho le we a ve sr, e c 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 ontact Hittite Microwave Corporation: One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 20 Alpha Road, Chelmsford, MA 01824 Phone rights of third parties that may result from its use. Specifications subject to change without notice. No : 9P7 h 8 o - n 2 e 5 : 7 0- 81- 3 3 3 2 4 9- 3 F 470 ax: 9 0 • Ord 7 e 8 r o - n 2 li 5 n 0 e a-t 337 ww 3 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. w.analog.com 13 - 2 Order On- Trademarks and registered trademarks are the property of their respective owners. line at www.hi A tptiptliec.actio o m n Support: Phone: 1-800-ANALOG-D
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