PDF HELA-10 Data sheet ( Hoja de datos )

Número de pieza	HELA-10
Descripción	LINEAR POWER AMPLIFIER Application Note
Fabricantes	Mini-Circuits
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No Preview Available ! AN-60-009 EA-7193 Application Note on HELA-10: HIGH IP3, WIDE BAND, LINEAR POWER AMPLIFIER Mini-Circuits Engineering Department P.O. Box 350166 Brooklyn, NY 11235 AN-60-009 Rev.: D M118643 (07/23/08) File name: AN60009.doc This document and its contents are the property of Mini-Circuits Page 1 of 48 Free Datasheet http://www.datasheet4u.net/ 1 page HELA-10 HIGH IP3, WIDE BAND, LINEAR POWER AMPLIFIER 1.0 Introduction Communication systems are becoming increasingly complex. The number of simultaneous carriers used in systems such as CATV is constantly increasing. This complexity increases the inter-modulation products. In order to keep the inter- modulation products under control, the carrier levels need to be lower or the system power output capability relative to the carrier level needs to be increased. Increased output power results in a corresponding increase in DC power consumption and cost. Feed-forward amplifiers are used extensively to increase inter-modulation intercept point and thereby decrease the inter-modulation products. Feed-forward amplifiers are generally expensive and are not readily available. This application note presents a new device, HELA-10 which incorporates a pair of amplifiers providing high intercept point comparable to a feed forward amplifier, but at a significantly lower cost. HELA-10 is very versatile, and can work in both 50- and 75-ohm systems. Four models, designated HELA-10A, HELA-10B, HELA-10C, and HELA-10D, are the same device with a choice of specifications. Each model corresponds to the device being embedded in a different set of baluns and biasing components that optimize it for 50- or 75-ohm system interfaces and different frequency ranges. This Application Note refers to the individual model numbers when distinguishing their individual performance, or simply as HELA-10 when describing their common characteristics. 2.0 HELA-10, A Balanced Power Amplifier HELA-10 is a balanced, sixteen-lead, power amplifier with a nominal gain of 11 dB. Figure 1 is a photograph of the amplifier. Figure 2 shows how the amplifier is used with external baluns and bias components. The amplifier is powered by a single +12V DC power supply. It operates in Class-A and produces a nominal output power of 1 watt. Figure 1 – HELA-10 Photograph AN-60-009 Rev.: D M118643 (07/23/08) File name: AN60009.doc This document and its contents are the property of Mini-Circuits Page 5 of 48 Free Datasheet http://www.datasheet4u.net/ 5 Page Gain vs. Frequency VSWR (Input) vs. Frequency VSWR (Output) vs. Frequency Output Power at 1-dB Compression, P1dB Third-Order Intercept Point, IP3 Second-Order Intercept, IP2 Noise Figure DC Current vs. Supply Voltage Gain vs. Supply Voltage, rel. to 12V P1dB & IP3 vs. Supply V. rel. to 12V DC Current with Resistor Pin 7 – gnd. Gain, with Resistor from Pin 7 to ground P1dB & IP3, with Resistor from Pin 7 to ground 75-Ohm System HELA-10A HELA-10C Decreases from Flat 11.5 dB at 10- 11.5 dB at 50 MHz 100 MHz; decr. to to 10.7 dB at 1000 11.1 dB at 5 MHz, MHz. 10.9 dB at 450 MHz. 1.2:1 at 50 MHz, Decreases from 1.15:1 at 100-700 2.1:1 at 5 MHz to MHz, increases to 1.4:1 at 20-450 1.5:1 at 1000 MHz. MHz. 1.2:1 at 50 MHz, 1.15:1 at 100-700 MHz, increases to 1.4:1 at 1000 MHz. 30.5 dBm 50-600 MHz, 28.7 at 1000 MHz. Decreases from 1.4:1 at 5 MHz to very low 1.15:1- 1.2:1 at 10-450 MHz. 29.9-30.8 dBm from 5 to 450 MHz. --- IP3 is 48-51 dBm. 50-Ohm System HELA-10B HELA-10D 11.0-11.3 dB at 50- Flat 11.3 dB at 10- 700 MHz, 50 MHz; decr. to decreases to 10.7 11 dB at 8 MHz, dB at 1000 MHz. 10.6 dB at 30.0 MHz. Decreases from Decreases from 2.1:1 at 50 MHz to 1.6:1 at 8 MHz to 1.3:1 at 300 MHz 1.15:1 at 30-100 and beyond. MHz, increases to 1.60:1 at 300 MHz. Decreases from Very low 1.15:1 at 2.1:1 at 50 MHz to 8-100 MHz, 1.4:1 at 300-700 increases to 1.60:1 MHz, 1.15:1 up to at 300 MHz. 1000 MHz. 31.0 dBm 300-600 29.9-30.4 dBm MHz, 29.0 at 50 from 8 to 300 MHz, 28.5 at 1000 MHz. MHz. --- --- IP2 is 88 dBm at --- 50 MHz, ~80 dBm --- --- at 500-1000 MHz. 3.5 dB at mid-freq, 3.2 dB at mid-freq, 3.0 dB at mid-freq, 3.0 dB at mid-freq, 4 dB at 50 & 4.5 at 3.5 dB at upper 4 dB at 50 & 1000 3.5 dB at upper 1000 MHz. band edge. MHz. band edge. Increases 15% when supply voltage is increased 12V to 15V, decreases 10% when supply voltage is decreased 12V to 10V, decreases 40% from 12V to 4V. Gain decreases by 0.1, 0.2, 0.3 dB at 6, 5, --- --- 4V respectively. P1dB decreases approx. .1 dB / volt. --- --- IP3 decreases more quickly. Decreases 15% with 1 k-ohms, 40% with --- --- 100 ohms, 53% with 1 – 10 ohms. Decreases 0.1 dB with 1 k-ohms, 0.3 dB with 100 ohms, 0.4 dB with 1 - 10 ohms. --- --- P1dB decreases 1 dB with 1 k-ohms, 4 dB with 100 ohms, 6 dB with 1 – 10 --- --- ohms. IP3 decreases twice as quickly. Table 2 – Performance Summary AN-60-009 Rev.: D M118643 (07/23/08) File name: AN60009.doc This document and its contents are the property of Mini-Circuits Page 11 of 48 Free Datasheet http://www.datasheet4u.net/ 11 Page

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