SPM-2045 STANFORD | Alldatasheet
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Technical content
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for in accuracies 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 http://www.sirenza.com
1 EDS102972 Rev A
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 stan- dard surface mount module for excellent RF performance. Product Specifications: Down-converter Test Conditions: FLO = 1.8GHz FIF = 150MHz Frf = 1.95GHZ Plo = 17dBm Parameters Test Conditions Unit Min. Typ. Max. RF Input Frequency Range GHz 1.7 2.3 LO Frequency GHz 1.7 2.3 IF Output Frequency MHz 50 500 RF Return Loss Frf = 1.9GHz dB 14 LO Return Loss Flo = 1.7GHz dB 5 IF Return Loss Fif=200MHz dB 14 Conversion Loss 2 GHz 7.5 10 SSB Noise Figure 7.5 10 TOI (Input) Plo=14dBm dBm 28 Plo=17dBm dBm 31 Plo=20dBm dBm 33 P1dB (input) Plo=17dBm dBm 20 LO-RF isolation 2 GHz dB 30 LO-IF isolation 2 GHz dB 30 RF-IF isolation 2 GHz dB 35 Functional Block Diagram SPM-2045 High Linearity Passive FET Mixer Product Features
Applications
Excellent linearity. Efficient operation over wide LO power range. Well behaved over variations in frequency, LO power, and port match. PCS, DCS, UMTS upconverters and down- converters Product Description RF IF LO
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
2 EDS102972 Rev A
SPM-2045 High Linearity Mixer Product Specifications: Up-converter Test Conditions: FLO = 1.8GHz FIF = 150MHz Frf = 1.95GHZ Plo = 17dBm Parameters Test Conditions Unit Min. Typ. Max. RF Output Frequency Range GHz 1.7 2.3 LO Frequency GHz 1.7 2.3 IF Input Frequency MHz 40 300 RF Return Loss Frf = 1.9GHz dB 14 LO Return Loss Flo = 1.7GHz dB 5 IF Return Loss Fif=200 MHz dB 14 Conversion Loss 81 0 TOI (Input) Plo=14dBm dBm 23 Plo=17dBm dBm 27 Plo=20dBm dBm 30 P1dB (input) Plo=17dBm dBm 20 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 them- selves. Absolute Maximum Ratings Parameters Value Unit RF Input +15 dBm LO Input +21 dBm IF Input +15 dBm Operating Temperature -40 to +85 ºC Storage Temperature -65 to +150 ºC 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 oper- ating values specified in the table on page one. Caution: ESD Sensitive Appropriate precaution in handling, packaging and testing devices must be observed.
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
3 EDS102972 Rev A
SPM-2045 High Linearity Mixer Conversion Loss. vs Frequency, High Side LO, Down-converter 1700 1800 1900 2000 2100 2200 RF Frequency Conversion Loss 20dBm 17dBm 14dBm Conversion Loss. Vs Frequency, Low Side LO Down-converter 1700 1800 1900 2000 2100 2200 RF Frequency Conversion Loss 20dBm 17dBm 14dBm Conversion Loss vs. LO Power, Down-converter RF=1900MHz, IF=150MHz 5 1 01 52 0 LO Power, dBm Conversion Loss High side lo Low side lo Conversion Loss vs. LO Power, Up-converter RF=1900MHz, IF=150MHz 51 0 1 5 2 0 LO Power, dBm Conversion Loss High side lo Low side lo Conversion Loss. vs Frequency, High Side LO Up-converter 1700 1800 1900 2000 2100 2200 RF Frequency Conversion Loss 20dBm 17dBm 14dBm Conversion Loss. vs Frequency, Low Side LO Up-converter 1700 1800 1900 2000 2100 2200 RF Frequency Conversion Loss 20dBm 17dBm 14dBm These graphs show mixer conversion loss vs. frequency, with both low-side LO excitation (LO frequency below the RF fre- quency) 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.
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
4 EDS102972 Rev A
SPM-2045 High Linearity Mixer TOI vs. Frequency, High Side LO Down-converter 1700 1800 1900 2000 2100 2200 RF Frequency Input TOI, dBm 20dBm 17dBm 14dBm TOI vs. Frequency, Low Side LO Down-converter 1700 1800 1900 2000 2100 2200 RF Frequency Input TOI, dBm 20dBm 17dBm 14dBm TOI vs. Frequency, High Side LO Up-converter 1700 1800 1900 2000 2100 2200 RF Frequency Input TOI, dBm 20dBm 17dBm 14dBm TOI vs. Frequency, Low Side LO Up-converter 1700 1800 1900 2000 2100 2200 RF Freqyency Input TOI, dBm 20dBm 17dBm 14dBm TOI vs. LO Power, Down-converter RF=1900MHz, IF=150MHz 51 0 1 5 2 0 LO Power, dBm Input TOI, dBm High side lo Low side lo TOI vs. LO Power, Up-converter RF=1900MHz, IF=150MHz 51 0 1 5 2 0 LO Power, dBm Input TOI, 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 excita- tion (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 fre- quency 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 http://www.sirenza.com
5 EDS102972 Rev A
SPM-2045 High Linearity Mixer 1500 1650 1800 1950 2100 2250 2400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 RF Freq. MHz LO Freq. MHz Input Intercept, dBm Down-converter 17dBm LO 34-36 32-34 30-32 28-30 26-28 1500 1650 1800 1950 2100 2250 2400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 RF Freq. MHz LO Freq. MHz Conversion Loss, dB Down-converter 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 1500 1650 1800 1950 2100 2250 2400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 RF Freq. MHz LO Freq. MHz Input Intercept, dBm Up-converter 17dBm LO 30-32 28-30 26-28 24-26 22-24 1500 1650 1800 1950 2100 2250 2400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 RF Freq. MHz LO Freq. MHz Conversion Loss, dB Up-converter 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 TOI vs. Temperature RF=1950MHz, L0=1800MHz, 17dBm 30.5 31.5 - 5 0 - 3 0 - 1 01 03 05 07 09 0 Temperature Input TOI, dBm Insertion Loss vs. Temperature RF=1950MHz, L0=1800MHz, 17dBm 7.5 8.5 - 5 0 - 3 0 - 1 0 1 03 05 07 09 0 Temperature Insertion Loss 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 http://www.sirenza.com
6 EDS102972 Rev A
SPM-2045 High Linearity Mixer Isolation LO Power = 17dBm 100 0 500 1000 1500 2000 2500 3000 Frequency Isolation, dB RF-IF LO-RF LO-IF Half IF response IF=200MHz, PLO=20dBm, PRF=10dBm 100 1500 1700 1900 2100 2300 2500 RF Frequency Isolation, dB low side high side Harmonics of LO at IF port 20dBm LO power, 2GHz. -50 -40 -30 -20 -10 0 1000 2000 3000 LO Frequency Fundamental, MHz Harmonic Level, dBm 2nd Harmonic 3rd Harmonic Harmonics of LO to RF port 20dBm LO power, 2GHz -50 -40 -30 -20 -10 0 1000 2000 3000 LO Frequency Fundamental, MHz Harmonic Level, dBm 2nd Harmonic 3rd Harmonic IF Port Return Loss LO=2.0GHz, 17dBm -20 -15 -10 0 100 200 300 400 500 600 Frequency, MHz Reflection Coefficient, dB RF Port Return Loss LO=2.0GHz, 17dBm -20 -15 -10 0 500 1000 1500 2000 2500 3000 3500 Frequency, MHz Reflection Coefficient, dB 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 http://www.sirenza.com
7 EDS102972 Rev A
SPM-2045 High Linearity Mixer Conversion Loss Compression Curves RF=1.95GHz , LO=1.75GHz , Dow n- conversion 0 5 10 15 20 25 RF Power, dBm Conversion Loss 14dBm 17dBm 20dBm Conversion Loss Compression Curves RF=1.95GHz, LO=1.75GHz , Up-conversion 0 5 10 15 20 25 RIF Power, dBm Conversion Loss 14dBm 17dBm 20dBm LO Port Return Loss LO=2.0GHz, 17dBm -20 -15 -10 0 500 1000 1500 2000 2500 3000 Frequency, MHz Reflection Coefficient, dB Package Dimensions Part Number Ordering Information Part Number Reel Size Devices/Reel SPM-2045 13 ” 1000
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8 EDS102972 Rev A
SPM-2045 High Linearity Mixer Input IP3, SPM 2045, LO Power = +17 dBm With variations in IF port match 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 Trombone extension length IIP3 (dBm)
1750 MHz
1800 MHz
1850 MHz
Input IP3, +17 dBm LO Power, 150 MHz IF With variation in RF port match 0 2 4 6 8 1 01 21 41 61 82 02 2 Tuner Length (cm) IIP3 (dBm) 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 http://www.sirenza.com
9 EDS102972 Rev A
SPM-2045 High Linearity Mixer Sirenza Microdevices Mixer Eval Bd. IFJ3 RF J2J1 LO SPM Evaluation Board Recommended connectors: Johnson 142-0701-851 SMA end-launch connectors (or equivalent) Demo Test Board Schematic