Datasheet HMC920LP5E (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | ACTIVE BIAS CONTROLLER |
| Páginas / Página | 26 / 9 — HMC920LP5E. ACTIVE BIAS CONTROLLER. Pin Descriptions. 13 - 9 |
| Formato / tamaño de archivo | PDF / 1.6 Mb |
| Idioma del documento | Inglés |
HMC920LP5E. ACTIVE BIAS CONTROLLER. Pin Descriptions. 13 - 9
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HMC920LP5E
v07.1013
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 stabil- 21 VGATE ity, a 10µF capacitor should be connected between the gate (base) terminal of the external amplifier and GND as close to the amplifier as possible. 13 Drain voltage. Should be connected to the supply terminal of the external amplifier. A minimum 100 nF 22, 23 VDRAIN capacitor has to be placed close to the external amplifier to T improve load regulation. M T - S N To adjust the bias current of the external amplifier connect E 25 ISENSE a resistor (Rsense) from ISENSE pin to GND. Use Eqn.4 to M determine the required Rsense value. E G A N A high precision resistor (e.g. 0.5%, ±25 ppm TCR) to GND A is needed. The value of the resistor sets the threshold 26 ALML value for under current alarm. Please refer to the “Over/ Under Current Alarm” section for a detailed explanation. R M E A high precision resistor (e.g. 0.5%, ±25 ppm TCR) between ALML and ALMM is needed. The total external W 27 ALMM resistance from ALMM pin to GND should always be equal to 5 kΩ. Please refer to the “Over/Under Current Alarm” O section for a detailed explanation. C P D A high precision resistor (e.g. 0.5%, ±25 ppm TCR) to ALMM pin is needed. The value of the resistor sets the 28 ALMH threshold value for over current alarm. Please refer to the “Over/Under Current Alarm” section for a detailed explanation. 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
13 - 9
license is granted by implication or otherwise under any patent or patent rights of Analog Devices. w.analog.com 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
v07.1013
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 stabil- 21 VGATE ity, a 10µF capacitor should be connected between the gate (base) terminal of the external amplifier and GND as close to the amplifier as possible. 13 Drain voltage. Should be connected to the supply terminal of the external amplifier. A minimum 100 nF 22, 23 VDRAIN capacitor has to be placed close to the external amplifier to T improve load regulation. M T - S N To adjust the bias current of the external amplifier connect E 25 ISENSE a resistor (Rsense) from ISENSE pin to GND. Use Eqn.4 to M determine the required Rsense value. E G A N A high precision resistor (e.g. 0.5%, ±25 ppm TCR) to GND A is needed. The value of the resistor sets the threshold 26 ALML value for under current alarm. Please refer to the “Over/ Under Current Alarm” section for a detailed explanation. R M E A high precision resistor (e.g. 0.5%, ±25 ppm TCR) between ALML and ALMM is needed. The total external W 27 ALMM resistance from ALMM pin to GND should always be equal to 5 kΩ. Please refer to the “Over/Under Current Alarm” O section for a detailed explanation. C P D A high precision resistor (e.g. 0.5%, ±25 ppm TCR) to ALMM pin is needed. The value of the resistor sets the 28 ALMH threshold value for over current alarm. Please refer to the “Over/Under Current Alarm” section for a detailed explanation. 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
13 - 9
license is granted by implication or otherwise under any patent or patent rights of Analog Devices. w.analog.com 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