sa5205a, Ham- CB Radio, Karty katalogowe
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INTEGRATED CIRCUITS SA5205A Wide-band high-frequency amplifier Product specification Replaces data of February 24, 1992 1997 Nov 07 IC17 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Wide-band high-frequency amplifier SA5205A DESCRIPTION The SA5205A family of wideband amplifiers replace the SA5205 family. The ‘A’ parts are fabricated on a rugged 2 m m bipolar process featuring excellent statistical process control. Electrical performance is nominally identical to the original parts. The SA5205A is a high-frequency amplifier with a fixed insertion gain of 20dB. The SA5205A operates with a single supply of 6V, and only draws 24mA of supply current, which is much less than comparable hybrid parts. The noise figure is 4.8dB in a 75 PIN CONFIGURATIONS D Packages V CC V IN GND 1 8 V CC V OUT GND 2 20dB 7 3 6 W system GND 4 5 GND and 6dB in a 50 W system. TOP VIEW Until now, most RF or high-frequency designers had to settle for discrete or hybrid solutions to their amplification problems. Most of these solutions required trade-offs that the designer had to accept in order to use high-frequency gain stages. These include high-power consumption, large component count, transformers, large packages with heat sinks, and high part cost. The SA5205A solves these problems by incorporating a wide-band amplifier on a single monolithic chip. The part is well matched to 50 or 75 W input and output impedances. The Standing Wave Ratios in 50 and 75 SR00215 Figure 1. Pin Configuration FEATURES • 600MHz bandwidth • 20dB insertion gain • 4.8dB (6dB) noise figure ZO=75 W (ZO=50 W ) systems do not exceed 1.5 on either the input or output from DC to the -3dB bandwidth limit. Since the part is a small monolithic IC die, problems such as stray capacitance are minimized. The die size is small enough to fit into a very cost-effective 8-pin small-outline (SO) package to further reduce parasitic effects. W • No external components required • Input and output impedances matched to 50/75 W systems • 2000V ESD protection No external components are needed other than AC coupling capacitors because the SA5205A is internally compensated and matched to 50 and 75 W . The amplifier has very good distortion specifications, with second and third-order intermodulation intercepts of +24dBm and +17dBm respectively at 100MHz. The device is ideally suited for 75 W cable television applications such as decoder boxes, satellite receiver/decoders, and front-end amplifiers for TV receivers. It is also useful for amplified splitters and antenna amplifiers. The part is matched well for 50 W test equipment such as signal generators, oscilloscopes, frequency counters and all kinds of signal analyzers. Other applications at 50 APPLICATIONS • 75 W cable TV decoder boxes • Antenna amplifiers • Amplified splitters • Signal generators • Frequency counters • Oscilloscopes • Signal analyzers include mobile radio, CB radio and data/video transmission in fiber optics, as well as broad-band LANs and telecom systems. A gain greater than 20dB can be achieved by cascading additional SA5205As in series as required, without any degradation in amplifier stability. W • Broad-band LANs • Fiber-optics • Modems • Mobile radio • Security systems • Telecommunications ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 8-Pin Plastic Small Outline (SO) package -40 to +85 ° C SA5205AD SOT96-1 1997 Nov 07 2 853-1598 18662 Philips Semiconductors Product specification Wide-band high-frequency amplifier SA5205A EQUIVALENT SCHEMATIC V CC R1 R2 Q3 V OUT Q6 Q2 R3 V IN Q1 Q4 RE2 RF1 RE1 Q5 RF2 SR00216 Figure 2. Equivalent Schematic ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER RATING UNIT V CC Supply voltage 9 V V AC AC input voltage 5 V P-P T A Operating ambient temperature range SA grade -40 to +85 ° C P DMAX Maximum power dissipation, T A =25 ° C (still-air) 1, 2 D package 780 mW C, at the following rates: D package at 6.2mW/ ° C 2. See “Power Dissipation Considerations” section. ° 1997 Nov 07 3 NOTES: 1. Derate above 25 Philips Semiconductors Product specification Wide-band high-frequency amplifier SA5205A DC ELECTRICAL CHARACTERISTICS V CC =6V, Z S =Z L =Z O =50 W and T A =25 ° C in all packages, unless otherwise specified. SA5205A SYMBOL PARAMETER TEST CONDITIONS UNIT SYMBOL PARAMETER UNIT Min Typ Max V CC Operating supply voltage range Over temperature 5 5 8 8 V V I CC Supply current Over temperature 20 19 25 25 32 33 mA mA S21 Insertion gain f=100MHz Over temperature 17 16.5 19 21 21.5 dB f=100MHz 25 S11 Input return loss dB S11 dB DC - f MAX 12 Output return loss f=100MHz 27 S22 dB S22 dB DC - f MAX 12 f=100MHz -25 S12 Isolation dB S12 Isolation dB DC - f MAX -18 t R Rise time 500 ps t P Propagation delay 500 ps BW Bandwidth ± 0.5dB 450 MHz f MAX Bandwidth -3dB 550 MHz Noise figure (75 W ) f=100MHz 4.8 dB Noise figure (50 W ) f=100MHz 6.0 dB Saturated output power f=100MHz +7.0 dBm 1dB gain compression f=100MHz +4.0 dBm Third-order intermodulation intercept (output) f=100MHz +17 dBm Second-order intermodulation intercept (output) f=100MHz +24 dBm 1997 Nov 07 4 TEST CONDITIONS Input return loss Output return loss Philips Semiconductors Product specification Wide-band high-frequency amplifier SA5205A 35 34 32 30 28 26 24 22 20 18 16 11 9 8 7 6 T A = 25 o C 5 4 V CC = 7V V CC = 6V V CC = 5V 3 2 1 0 –1 –2 –3 –4 –5 –6 V CC = 8V Z O = 50 W T A = 25 o C 5 5.5 6 6.5 7 7.5 8 10 3 SR00218 Figure 7. Saturated Output Power vs Frequency 10 1 2 4 6 8 10 2 2 4 6 8 SUPPLY VOLTAGE—V SR00217 FREQUENCY—MHz Figure 3. Supply Current vs Supply Voltage 9 10 9 8 7 6 5 4 3 2 1 0 –1 –2 –3 –4 –5 –6 V CC = 8V 8 W T A = 25 o C V CC = 6V v cc = 8v v cc = 7v V CC = 5V V CC = 7V 7 v cc = 6v v cc = 5v 6 Z O = 50 W T A = 25 o C 5 10 12 468 10 2 2 468 10 3 SR00219 10 2 10 3 SR00220 Figure 8. 1dB Gain Compression vs Frequency 10 12 468 2 468 FREQUENCY—MHz FREQUENCY—MHz Figure 4. Noise Figure vs Frequency 25 40 v cc = 8v v cc = 7v 35 20 30 25 15 v cc = 6v v cc = 5v 20 W T A = 25 o C W T A = 25 o C 15 10 10 10 12 468 10 2 2 468 10 3 4 5 6 7 8 9 10 POWER SUPPLY VOLTAGE—V FREQUENCY—MHz SR00221 SR00222 Figure 9. Second-Order Output Intercept vs Supply Voltage Figure 5. Insertion Gain vs Frequency (S 21 ) 25 30 T A = 55 o C T A = 25 o C 25 20 20 15 T A = 85 o C T A = 125 o C 15 Z O = 50 W T A = 25 o C V CC = 8V Z O = 50 10 W 10 10 12 468 10 2 2 468 10 3 5 4 5 6 7 8 9 10 FREQUENCY—MHz SR00223 SR00224 Figure 10. Third-Order Intercept vs Supply Voltage POWER SUPPLY VOLTAGE—V Figure 6. Insertion Gain vs Frequency (S 21 ) 1997 Nov 07 5 10 Z O = 50 Z O = 50 Z O = 50 [ Pobierz całość w formacie PDF ] |