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| Preliminary Data Sheet Product Description The Sirenza SPM-2045 is a passive mixer designed for systems that require high linearity down- or up-conversion. It employs proprietary silicon FETs with proven reliable core-and-wire baluns. It operates efficiently over a wide range of Local Oscillator powers, with input third order intercept remaining approximately 15-18 dB above LO power over this range. This product is packaged in a standard surface mount module for excellent RF performance. SPM-2045 High Linearity Passive FET Mixer Functional Block Diagram Product Features RF IF * * * Excellent linearity. Efficient operation over wide LO power range. Well behaved over variations in frequency, LO power, and port match. LO Applications * Product Specifications: Down-converter PCS, DCS, UMTS upconverters and downconverters Test Conditions: FLO = 1.8GHz FIF = 150MHz Frf = 1.95GHZ Plo = 17dBm Parameters RF Input Frequency Range LO Frequency IF Output Frequency RF Return Loss LO Return Loss IF Return Loss Conversion Loss SSB Noise Figure TOI (Input) Plo=14dBm Plo=17dBm Plo=20dBm P1dB (input) LO-RF isolation LO-IF isolation RF-IF isolation Plo=17dBm 2 GHz 2 GHz 2 GHz dBm dBm dBm dBm dB dB dB Frf = 1.9GHz Flo = 1.7GHz Fif=200MHz 2 GHz Test Conditions Unit GHz GHz MHz dB dB dB Min. 1.7 1.7 50 14 5 14 7.5 7.5 28 31 33 20 30 30 35 10 10 Typ. Max. 2.3 2.3 500 The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or ommisions. Sirenza Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2002 Sirenza Microdevices, Inc. All worldwide rights reserved. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 1 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer Product Specifications: Up-converter Test Conditions: FLO = 1.8GHz FIF = 150MHz Frf = 1.95GHZ Plo = 17dBm Parameters RF Output Frequency Range LO Frequency IF Input Frequency RF Return Loss LO Return Loss IF Return Loss Conversion Loss TOI (Input) Plo=14dBm Plo=17dBm Plo=20dBm P1dB (input) Plo=17dBm dBm dBm dBm dBm Frf = 1.9GHz Flo = 1.7GHz Fif=200 MHz Test Conditions Unit GHz GHz MHz dB dB dB Min. 1.7 1.7 40 14 5 14 8 23 27 30 20 10 Typ. Max. 2.3 2.3 300 Absolute Maximum Ratings Parameters RF Input LO Input IF Input Operating Temperature Storage Temperature Value +15 +21 +15 -40 to +85 -65 to +150 Unit dBm dBm dBm C C Caution: ESD Sensitive Appropriate precaution in handling, packaging and testing devices must be observed. Operation of this device beyond any one of these limits may cause permanent damage. For reliable continuous operation the device voltage and current must not exceed the maximum operating values specified in the table on page one. The SPM-2045 mixer is a MOSFET based high performance mixer designed for high linearity frequency conversion in the 2GHz band. This mixer features a wide latitude in LO power requirements. Conversion loss remains quite constant between 10dBm and 20dBm of LO power. Third Order Intercept is approximately proportional to the LO drive. This means that this mixer can be used to replace a wide variety of mixers requiring a variety of LO powers. The graphs on the following pages illustrate the performance of the SPM-2045 over a variety of operating conditions. In order to duplicate these performance tests, the following precautions should be observed: -The mixer should be presented with good return losses at all ports by using isolators or attenuators. This is especially true of the LO port, because of the poor return loss of this port. If ripple is seen in a frequency sweep, it is likely due to reflections caused by poor VSWR in a cable leading up to the device. -The presence of harmonics in the LO can cause changes in TOI. -Be aware that signals of many different frequencies exist at the output of the mixer, and any one can potentially cause the spectrum analyzer to generate intermod. -When measuring TOI, make sure the two generators supplying the RF signal are not interacting, causing intermod themselves. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 2 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer Conversion Loss. vs Frequency, High Side LO, Down-converter 11 Conversion Loss 10 9 8 7 1700 20dBm 17dBm 14dBm Conversion Loss 11 10 9 8 7 1700 20dBm 17dBm 14dBm Conversion Loss. vs Frequency, High Side LO Up-converter 1800 1900 2000 2100 2200 1800 1900 2000 2100 2200 RF Frequency RF Frequency Conversion Loss. Vs Frequency, Low Side LO Down-converter 11 Conversion Loss Conversion Loss 10 9 20dBm 17dBm 14dBm 8 7 1700 11 10 9 8 Conversion Loss. vs Frequency, Low Side LO Up-converter 20dBm 17dBm 14dBm 1800 1900 2000 2100 2200 7 1700 1800 1900 2000 2100 2200 RF Frequency RF Frequency Conversion Loss vs. LO Power, Down-converter RF=1900MHz, IF=150MHz 11 Conversion Loss Conversion Loss Conversion Loss vs. LO Power, Up-converter RF=1900MHz, IF=150MHz 11 10 High side lo Low side lo 8 10 9 8 7 5 10 15 20 LO Power, dBm High side lo Low side lo 9 7 5 10 15 20 LO Power, dBm These graphs show mixer conversion loss vs. frequency, with both low-side LO excitation (LO frequency below the RF frequency) and high side excitation (LO frequency above the RF frequency). Operation both as a down-converter and an upconverter is shown, with LO powers of 14, 17, and 20dBm. In all cases, the IF frequency is 150MHz. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 3 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer TOI vs. Frequency, High Side LO Down-converter 35 Input TOI, dBm 40 TOI vs. Frequency, High Side LO Up-converter Input TOI, dBm 35 20dBm 17dBm 30 14dBm 30 20dBm 17dBm 25 14dBm 25 1700 1800 1900 2000 2100 2200 20 1700 1800 1900 2000 2100 2200 RF Frequency RF Frequency TOI vs. Frequency, Low Side LO Down-converter 40 Input TOI, dBm 35 TOI vs. Frequency, Low Side LO Up-converter Input TOI, dBm 35 20dBm 17dBm 30 14dBm 30 20dBm 17dBm 25 14dBm 25 1700 1800 1900 2000 2100 2200 20 1700 1800 1900 2000 2100 2200 RF Frequency RF Freqyency TOI vs. LO Power, Down-converter RF=1900MHz, IF=150MHz 40 35 Input TOI, dBm 30 25 20 15 5 10 15 20 LO Power, dBm High side lo Low side lo TOI vs. LO Power, Up-converter RF=1900MHz, IF=150MHz 40 35 30 25 20 15 5 10 15 20 LO Power, dBm High side lo Low side lo These graphs show mixer Third Order Intercept (TOI) vs. frequency referenced to the input of the mixer (that is, referenced to the RF port in the case off a down-converter, or the IF port in the case of an up-converter), with both low-side LO excitation (LO frequency below the RF frequency) and high side excitation (LO frequency above the RF frequency). Operation both as a down-converter and an up-converter is shown, with LO powers of 14, 17, and 20dBm. In all cases, the IF frequency is 150MHz. The RF power used in measuring third order intercept is +4dBm. Note that third order products closely follow the expected 3:1 slope. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 4 Input TOI, dBm http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer 2400 Conversion Loss, dB 2300 Down-converter 2200 2100 2000 LO Freq. 1900 MHz 1800 1700 1600 1500 1650 1800 1950 2100 2250 2400 1500 2400 2300 2200 2100 2000 LO Freq. 1900 MHz 1800 1700 1600 1500 1650 1800 1950 2100 2250 24001 500 10.5-11 10-10.5 9.5-10 9-9.5 8.5-9 8-8.5 7.5-8 7-7.5 17dBm LO 10.5-11 10-10.5 9.5-10 9-9.5 8.5-9 8-8.5 7.5-8 7-7.5 Conversion Loss, dB Up-converter 17dBm LO RF Freq. MHz RF Freq. MHz 2400 Input Intercept, dBm 2300 Down-converter 2200 2100 2000 LO Freq. 1900 MHz 1800 1700 1600 1500 1650 1800 1950 2100 2250 2400 1500 34-36 32-34 30-32 28-30 26-28 2400 Input Intercept, dBm 2300 Up-converter 2200 2100 2000 LO Freq. 1900 MHz 1800 1700 1600 1500 1650 1800 1950 2100 2250 2400 1500 17dBm LO 17dBm LO 30-32 28-30 26-28 24-26 22-24 RF Freq. MHz RF Freq. MHz TOI vs. Temperature RF=1950MHz, L0=1800MHz, 17dBm 9 Insertion Loss 32 Input TOI, dBm 31.5 31 30.5 30 -50 -30 -10 10 30 50 70 90 Temperature 8.5 8 7.5 7 -50 Insertion Loss vs. Temperature RF=1950MHz, L0=1800MHz, 17dBm -30 -10 10 30 50 70 90 Temperature The contour graphs show mixer input TOI and conversion loss over a variety of RF and LO frequencies. These contour graphs can be used to assess the suitability of these mixers over a variety of frequencies of operation. Note that constant IF frequency curves can be overlaid as diagonal lines. Also shown are graphs of TOI and insertion loss vs. temperature. These curves were measured down-converter mode. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 5 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer Isolation LO Power = 17dBm 100 Isolation, dB RF-IF LO-RF 40 20 0 0 500 1000 1500 Frequency 2000 2500 3000 LO-IF Isolation, dB 100 80 60 40 20 0 1500 low side high side Half IF response IF=200MHz, PLO=20dBm, PRF=10dBm 80 60 1700 1900 2100 2300 2500 RF Frequency Harmonics of LO at IF port 20dBm LO power, 2GHz. 10 Harmonic Level, dBm 0 -10 -20 -30 -40 -50 0 1000 2000 3000 LO Frequency Fundamental, MHz 2nd Harmonic 3rd Harmonic Harmonic Level, dBm 0 -10 -20 Harmonics of LO to RF port 20dBm LO power, 2GHz 2nd Harmonic -30 -40 -50 0 1000 2000 3000 LO Frequency Fundamental, MHz 3rd Harmonic RF Port Return Loss LO=2.0GHz, 17dBm Reflection Coefficient, dB Reflection Coefficient, dB 0 -5 -10 -15 -20 0 500 1000 1500 2000 2500 3000 3500 Frequency, MHz 0 -5 -10 -15 -20 0 100 IF Port Return Loss LO=2.0GHz, 17dBm 200 300 Frequency, MHz 400 500 600 The isolation graph shows port isolation with a 2GHz LO at 17dB. Half IF response is measured by applying RF signals (10dBm amplitude) 100MHz above or below the LO, and measuring the level of the undesired IF component at 200MHz. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 6 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer C onversion Loss C ompression C urves R F=1.95GH z , LO=1.75GH z , D ow nconversion 11 11 Conversion Loss Conversion Loss 10 14dB m 9 8 7 0 5 10 15 20 25 0 5 10 15 20 25 RF P ow e r, dBm RIF P ow e r, dBm 17dB m 20dB m 10 14dB m 9 8 7 17dB m 20dB m C onversion Loss C ompression C urves R F=1.95GH z , LO=1.75GH z , U p-conversion LO Port Return Loss LO=2.0GHz, 17dBm 0 Reflection Coefficient, dB -5 -10 -15 -20 0 500 1000 1500 2000 2500 3000 Frequency, MHz Package Dimensions Part Number Ordering Information Part Number SPM-2045 Reel Size 13" Devices/Reel 1000 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 7 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer Input IP3, SPM 2045, LO Power = +17 dBm With variations in IF port match 34 33 32 31 30 29 28 27 26 25 2 cm 4 cm 6 cm 8 cm 10 cm 12 cm 14 cm 16 cm 18 cm 20 cm 22 cm 24 cm 26 cm 28 cm 30 cm 31 30 29 IIP3 (dBm) Input IP3, +17 dBm LO Power, 150 MHz IF With variation in RF port match IIP3 (dBm) 1750 MHz 1800 MHz 1850 MHz 28 27 26 25 24 0 2 4 6 8 10 12 14 16 18 20 22 Tuner Length (cm) 1750 MHz 1800 MHz 1850 MHz Trombone extension length Sensitivity to Port Match These graphs demonstrate the sensitivity of the linearity of the SPM-2045 to the impedance of the source which drives the RF port, and the load that the IF port sees. In this case, the mixer is operated as a down-converter with LO drive of 17dBm and an IF frequency of 150MHz. Three LO frequencies are shown. In the left graph, a variable-length 50 ohm transmission line ("trombone") is placed between the IF port of the mixer and a 2 dB, open-circuited attenuator to provide a 4dB return loss to the IF port. The length of the transmission line is changed to vary the phase of the reflection coefficient, thus providing a variable impedance. This graph shows how the input TOI varies with the phase of the reflection coefficient. Notice that significant degradation in TOI can occur with mismatch, depending on the phase of the mismatch. In the right graph, a double-stub tuner is placed between the RF source and the mixer in order to provide a non-50 ohm impedance to the RF port. The stub separation was adjusted to provide a reflection coefficient of approximately -4 dB. The tuner length was changed to vary the phase of the reflection coefficient, thus providing a variable impedance. This graph shows how the input TOI varies with the phase of the reflection coefficient on the RF port. Note that the TOI is very tolerant of variations in load impedance, showing a change of only 3dB. 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 8 http://www.sirenza.com EDS102972 Rev A Preliminary Data Sheet SPM-2045 High Linearity Mixer Demo Test Board Schematic SPM Evaluation Board LO RF J1 J2 Sirenza Microdevices Mixer Eval Bd. J3 IF Recommended connectors: Johnson 142-0701-851 SMA end-launch connectors (or equivalent) 522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC 9 http://www.sirenza.com EDS102972 Rev A |
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