Datasheet HMC981LP3E (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | ACTIVE BIAS CONTROLLER |
| Pages / Page | 17 / 8 — HMC981LP3E. ACTIVE BIAS CONTROLLER. Pin Descriptions. 13 - 8 |
| File Format / Size | PDF / 998 Kb |
| Document Language | English |
HMC981LP3E. ACTIVE BIAS CONTROLLER. Pin Descriptions. 13 - 8
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Text Version of Document
HMC981LP3E
v01.0411
ACTIVE BIAS CONTROLLER Pin Descriptions
(Continued) Pin Number Function Description Interface Schematic Gate Control pin for external amplifier. Connect to the gate (base) of the external amplifier. In order to guarantee 11 VGATE stability,a 10μF capacitor should be connected between the gate (base) terminal of the external amplifier and GND as close to the amplifier as possible. Drain voltage. Should be connected to the supply terminal of the external amplifier. A minimum 100 nF 13 12 VDRAIN capacitor has to be placed close to the external amplifier to improve load regulation. T M Trigger out signal. Generates a HIGH (3.5V) signal when the active bias system stabilizes. This signal can be S - S 13 TRIGOUT used to trigger next device (ENABLE) if more than one R HMC981LP3E is used in a daisy chain. LLE O R T N To adjust the bias current of the external amplifier connect 15 ISENSE a resistor (Rsense) from ISENSE pin to GND. Use Eqn.2 to O determine the required Rsense value. S C IA B 1.5V reference voltage. 0.1uF or greater capacitor to GND 16 VREF is needed for noise filtering. 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 vesr, 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 2 Elizabeth Drive, Chelmsford, MA 01824 Phon rights of third parties that may result from its use. Specifications subject to change without notice. No e: 9 Ph 7 o 8 n - e 2 : 750 81- - 3 3 2 3 9- 4 4 3 F 70 ax 0 • O : 9 rde 7 r o8 nl-i2 n 50 e at -33 ww 7 w. 3 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. analog.com
13 - 8
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
v01.0411
ACTIVE BIAS CONTROLLER Pin Descriptions
(Continued) Pin Number Function Description Interface Schematic Gate Control pin for external amplifier. Connect to the gate (base) of the external amplifier. In order to guarantee 11 VGATE stability,a 10μF capacitor should be connected between the gate (base) terminal of the external amplifier and GND as close to the amplifier as possible. Drain voltage. Should be connected to the supply terminal of the external amplifier. A minimum 100 nF 13 12 VDRAIN capacitor has to be placed close to the external amplifier to improve load regulation. T M Trigger out signal. Generates a HIGH (3.5V) signal when the active bias system stabilizes. This signal can be S - S 13 TRIGOUT used to trigger next device (ENABLE) if more than one R HMC981LP3E is used in a daisy chain. LLE O R T N To adjust the bias current of the external amplifier connect 15 ISENSE a resistor (Rsense) from ISENSE pin to GND. Use Eqn.2 to O determine the required Rsense value. S C IA B 1.5V reference voltage. 0.1uF or greater capacitor to GND 16 VREF is needed for noise filtering. 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 vesr, 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 2 Elizabeth Drive, Chelmsford, MA 01824 Phon rights of third parties that may result from its use. Specifications subject to change without notice. No e: 9 Ph 7 o 8 n - e 2 : 750 81- - 3 3 2 3 9- 4 4 3 F 70 ax 0 • O : 9 rde 7 r o8 nl-i2 n 50 e at -33 ww 7 w. 3 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. analog.com
13 - 8
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
