ltc5582 Linear Technology Corporation, ltc5582 Datasheet
ltc5582
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ltc5582 Summary of contents
Page 1
... The power of the AC signal in an equivalent decibel-scaled value is precisely converted into DC voltage on a linear scale, independent of the crest factor of the input signal waveforms. The LTC5582 is suitable for precision RF power measurement and level control for a wide variety of RF standards, including LTE, WiMAX, W-CDMA, CDMA2000, TD-SCDMA, and EDGE ...
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... LEAD FREE FINISH TAPE AND REEL LTC5582IDD#PBF LTC5582IDD#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: For more information on tape and reel specifications, go to: ...
Page 3
... Peak to Average Ratio (WiMAX OFDM) The denotes the specifications which apply over the full operating l = 25° 3.3V 3.3V. Test circuit is shown in Figure 1. (Notes 2 and 3 LTC5582 MIN TYP MAX UNITS – dBm 59 dB 29.3 mV/dB –86.4 dBm ±0 ...
Page 4
... Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC5582 is guaranteed functional over the temperature range –40°C to 85°C. Note 3: Logarithmic Intercept is an extrapolated input power level from the best fitted log-linear straight line, where the output voltage is 0V ...
Page 5
... T = –40°C A –1 –1 –2 –2 –3 –3 –65 –55 –45 –35 –25 –15 RF INPUT POWER (dBm) LTC5582 V = 3.3V 3.3V 25°C unless otherwise CC A Linear Error vs RF Input Power, Modulated Waveforms, 450MHz –1 –2 4-CARRIER WCDMA CW 3-CARRIER CDMA2K – ...
Page 6
... LTC5582 Typical perForMance characTerisTics noted. Test circuits shown in Figure 1. Output Voltage, Linearity Error vs RF Input Power, 2700MHz 2 1.6k t2 2.4 2.0 1.6 1.2 0 85° 25° –40°C A 0.4 –65 –55 –45 –35 –25 –15 – INPUT POWER (dBm) 5582 G12 Output Voltage, Linearity Error vs RF Input Power, 3800MHz 2 ...
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... Temperature, 2140MHz 85° 25° –40° –90 –88 –86 –84 –82 LOGRITHMIC INTERCEPT (dBm) LTC5582 V = 3.3V 3.3V 25°C unless otherwise CC A Output Voltage Linearity Error vs RF Input Power, 10GHz 2.8 2.4 2.0 1.6 1.2 0 85° 25° –40° ...
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... LTC5582 Typical perForMance characTerisTics noted. Test circuits shown in Figure 1. Output Transient Response 1µF 4 100MHz RF PULSE ON RF 4.4 4.0 RF PULSE OFF 3.6 RF PULSE OFF 3 0dBm –10dBm IN 2 –20dBm IN 2 –30dBm –40dBm IN 2 –50dBm IN 1.6 1.2 0.8 0.4 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 TIME (ms) 5582 G26 pin FuncTions V (Pin 1): Power Supply Pin. Typical current consump- CC tion is 41 ...
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... TDK CID05X7R1C104K 0402 MURATA GRM155CIH271JA01 0402 MURATA GJM1555C1HR40BB01 0402 AVX 0402YC101KAT 0603 VISHAY CRCW06031R50JNEA 0402 VISHAY CRCW0402100KFKED 0402 VISHAY CRCW040268R1FKED 0402 VISHAY CRCW04022K00FKEA 0402 VISHAY CRCW0402020000Z0ED Figure 2. Top Side of Evaluation Board LTC5582 R1 1.5 3. 100nF 1nF 1µ 100k R5 R6 OUT 2k 0 ...
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... LTC5582 applicaTions inForMaTion The LTC5582 is a true RMS RF power detector, capable of measuring an RF signal over the frequency range from 40MHz to 10GHz, independent of input waveforms with different crest factors such as CW, CDMA2K, WCDMA, LTE and WiMAX signals 60dB dynamic range is achieved with a very stable output within the full tem- perature range from – ...
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... IN 1:8 4 Figure 4. Differential Input Configuration Due to the high input impedance of the LTC5582, a narrow band L-C matching network can be also used to convert a single-ended input to differential signal as shown in Figure 5. By this means, the sensitivity and overall linear dynamic range of the detector will be very similar to the one using 1:8 RF input balun ...
Page 12
... RF input. The rise time of the LTC5582 is about 90ns and the fall time is 5µs, respectively, for full-scale pulsed RF input power when C3 = 8nF . The speed of the output transient response is dictated mainly by the filtering capacitor C3 (at least 8nF) at the FLTR Pin ...
Page 13
... LOAD In general, the rise time of the LTC5582 is much shorter than the fall time. However, when the output RC filter is used, the rise time can be dominated by the time constant of this filter. Accordingly, the rise time becomes very similar to the fall time. Although the maximum sinking capability of the LTC5582 is 5mA recommended that the output load resistance should be greater than 1 ...
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... Enable Interface 200 A simplified schematic of the EN Pin interface is shown 160 in Figure 13. The enable voltage necessary to turn on the LTC5582 is 1V. To disable or turn off the chip, this volt- 120 age should be below 0.4V important that the voltage applied to the EN pin should never exceed V 80 than 0 ...
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... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LTC5582 R = 0.125 0.40 0.10 TYP 6 10 ...
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... Quadrature Modulator Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 100nF 1µ FLTR LTC5582 3 8 DEC RT1 4 7 – IN RT2 5 6 GND OUT OUT EXPOSED PAD 1nF 11 COMMENTS 300MHz to 3GHz, Temperature Compensated, 2. Supply 100kHz to 1GHz, Temperature Compensated, 2 ...