MAX2620EUA Maxim Integrated Products, MAX2620EUA Datasheet
MAX2620EUA
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MAX2620EUA Summary of contents
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... Operates from Single +2.7V to +5.25V Supply Low-Cost Silicon Bipolar Design Two Output Buffers Provide Load Isolation Insensitive to Supply Variations Low, 27mW Power Consumption (V Low-Current Shutdown Mode: 0.1µA (typ) = 3.0V), and CC _______________Ordering Information PART MAX2620EUA MAX2620E/D *Dice are tested at T Pin Configuration appears at end of data sheet ...
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... TANK is greater than one-tenth the magnitude of the reactive impedances at TANK. This implies proper oscillator start-up when using an external resonator tank circuit with Q > 10. C3 and C4 must be tuned for operation at the desired frequency. 2 _______________________________________________________________________________________ Operating Temperature Range + 0.3V) MAX2620EUA .................................................-40°C to +85° 0.6V 0.3V) Junction Temperature ......................................................+150° 2.0V 0.3V) Storage Temperature Range .............................-65° ...
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RF Oscillator with Buffered Outputs TYPICAL OPERATING CIRCUIT PERFORMANCE—900MHz Band Ceramic- Resonator-Based Tank (Typical Operating Circuit +3.0V resonator: Trans-Tech SR8800LPQ1357BY 1pF, T PARAMETER Tuning Range V TUNE SSB 25kHz Phase Noise ...
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Integrated RF Oscillator with Buffered Outputs __________________________________________Typical Operating Characteristics = +3.0V, SHDN = V (Test Circuit of Figure unless otherwise noted.) OUT OUTPUT POWER vs. FREQUENCY OVER V AND TEMPERATURE ...
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RF Oscillator with Buffered Outputs _____________________________Typical Operating Characteristics (continued) (Typical Operating Circuit +3.0V resonator: Trans-Tech SR8800LPQ1357BY 1pF, T REVERSE ISOLATION vs. FREQUENCY V = 2.7V TO 5.25V CC 0 C3, C4 REMOVED -10 -20 ...
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Integrated RF Oscillator with Buffered Outputs _____________________________Typical Operating Characteristics (continued) (Typical Operating Circuit +3.0V resonator: Trans-Tech SR8800LPQ1357BY 1pF, T PHASE NOISE vs. TEMPERATURE -104 SSB @ f = 25kHz -106 -108 ...
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RF Oscillator with Buffered Outputs 1000pF TEST PORT C3* C2* 2.7pF 1000pF C4* V 1pF CC ON OFF 10 Figure 1. 900MHz Test Circuit _______________Detailed Description The oscillator is a common-collector, negative- resistance type that uses the ...
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Integrated RF Oscillator with Buffered Outputs Keeping the resonant tank circuit’s real component less than one-half the magnitude of the negative real com- ponent ensures that oscillations will start. After start-up, the oscillator’s negative resistance decreases, primarily ...
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RF Oscillator with Buffered Outputs 0. OUT CC 30pF 2 TANK MAX2620 3 120pF FDBK GND 4 SHDN OUT 120pF SHDN X = STATEK AT-3004 10MHz FUNDAMENTAL MODE ...
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Integrated RF Oscillator with Buffered Outputs C17 C STRAY C D1 VARACTOR+ PC BOARD COUPLING PARASITICS RESONANT TANK MODEL Figure 5. Electrical Model of MAX2620 Circuit resonators or high-Q inductors. Also, keep C5 and C17 (see the ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2002 Maxim Integrated Products ...