lt5502 Linear Technology Corporation, lt5502 Datasheet
lt5502
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lt5502 Summary of contents
Page 1
... OUT DIFFERENTIAL + I/Q OUTPUTS Q OUT – Q OUT 0 RSSI LT5502 C4 GND 1.8pF 5502 TA01a Final Electrical Specifications LT5502 400MHz Quadrature January 2001 U source. The I/Q Output Swing, RSSI Output vs IF Input Power 1200 1000 800 600 400 200 –85 –70 –55 –40 –25 –10 ...
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... Differential Differential 10pF MAX 3dB Linearity Error Input = – 70dBm Input = 0dBm Input from –70dBm to 0dBm Input from –70dBm to 0dBm ORDER PART + NUMBER Q 24 OUT – OUT LT5502EGN GND 21 GND 2XLO – 18 2XLO RSSI ...
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... I/Q Output Swing vs Temperature 1200 f = 280MHz 1000 800 T = – 600 400 1.8 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE (V) 5502 G02 LT5502 = –10dBm 280MHz, IF MIN TYP MAX UNITS 140 to 800 MHz –20 –5 dBm 2.6 1.8 5. 100 2.6 3.5 I/Q Output Swing vs IF Input Power 1200 ...
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... LT5502 W U TYPICAL PERFOR A CE CHARACTERISTICS I/Q Output Swing vs IF Input Power 1200 1000 f = 70MHz IF 800 f = 280MHz IF 600 f = 400MHz IF 400 200 –55 –85 –70 –40 –25 –10 IF INPUT POWER (dBm) 5502 G04 RSSI Output Voltage 1 280MHz ...
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... Q-Channel. The DC bias voltage is V should not be shorted to ground. + – IFt IFt 12 13 I-MIXER LIMITER 2 LO DIVIDE 2 BUFFERS 0 /90 Q-MIXER RSSI RSSI 2XLO LT5502 – 0.25V. CC – 0.25V. CC – 1.16V. This pin CC – 1.16V. This pin CC LPF + 1 I OUT 1 – OUT LPF + 24 ...
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... LT5502 U U APPLICATIO S I FOR ATIO The LT5502 consists of the following sections: IF limiter, I/Q demodulators, quadrature LO carrier generator, inte- grated lowpass filters (LPFs), and bias circuitry signal is fed to the inputs of the IF limiter. The limited IF signal is then demodulated into I/Q baseband signals using the quadrature LO carriers that are generated from the divide-by-two circuit ...
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... Table 2 shows the logic of the EN pin and STBY pin. In both normal operating mode and standby mode, the maximum discharging current is about 200 A, and the maximum charging current is more than 10mA. Table 2. The logic of different operating modes EN Low Low High LT5502 200 A 200 A – ...
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... SW1 Figure 3. Evaluation Circuit Schematic With I/Q Output Buffers 8 + – OUT OUT CC2 C9 C24 C25 CC1 1nF C11 LT5502 OUT OUT 2 – – OUT OUT 3 GND GND GND GND ...
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... U TYPICAL APPLICATIO S Figure 4.Component Side Silkscreen of Evaluation Board Figure 5. Component Side Layout of Evaluation Board LT5502 9 ...
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... LT5502 U TYPICAL APPLICATIO S 10 Figure 6.Bottom Side Silkscreen of Evaluation Board Figure 7. Bottom Side Layout of Evaluation Board ...
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... Plastic SSOP (Narrow 0.150) (LTC DWG # 05-08-1641) 0.229 – 0.244 (5.817 – 6.198) 0.015 0.004 45 0.053 – 0.068 (0.38 0.10) (1.351 – 1.727) 0 – 8 TYP 0.008 – 0.012 (0.203 – 0.305) LT5502 0.337 – 0.344* (8.560 – 8.738) 0.033 (0.838 ...
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... Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 0.1 F 100pF MIXER LIMITER LIMITER 22nF BUFFER 90 120nH Q MIXER 3.3pF LT5502 15 18 RSSI 3,5,8,9, 14,20,21 1nF 1.8pF 30nH 2nd LO, IF 560MHz SYNTHESIZER 2.7pF 2V BASEBAND 4,16,17, PROCESSOR OUTPUTS 1 2 A/D ...