lt5560 Linear Technology Corporation, lt5560 Datasheet
lt5560
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lt5560 Summary of contents
Page 1
... LO leakage to the output, while the integrated input amplifi er provides excellent isolation. The sig- nal ports can be impedance matched to a broad range of frequencies, which allows the LT5560 to be used as an up- or down-conversion mixer in a wide variety of applications. The LT5560 is characterized with a supply current of 10mA; ...
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... U PACKAGE/ORDER I FOR ATIO + 0.3V CC ORDER PART NUMBER LT5560EDD Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specifi ed with wider operating temperature ranges 3V 3V 25° ...
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... 450MHz 70MHz IN OUT f = 900MHz 140MHz IN OUT f = 1900MHz 140MHz IN OUT f = 450MHz 70MHz IN OUT f = 900MHz 140MHz IN OUT f = 1900MHz 140MHz IN OUT LT5560 = 25° –20dBm (–20dBm/tone for 2-tone A IN MIN TYP MAX – MIN TYP MAX 2.7 2.4 1.2 – 0.015 9.6 9.0 8 8.8 9.3 10 –63 – ...
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... LT5560 AC ELECTRICAL CHARACTERISTICS P = –20dBm (–20dBm/tone for 2-tone IIP3 tests, Δf = 1MHz low side LO for 900MHz and 1900MHz tests. Test circuits are shown in Figures 2 and 3. (Notes 2, 3 and 5) PARAMETER Isolation (with LO Applied Leakage LO to OUT Leakage 2RF – 2LO Output Spurious (Half IF) ...
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... VOLTAGE (V) IIP3 Distribution at 900MHz 45 –45°C 40 +25°C +90° 7.8 8.2 8.6 9.0 9.4 9.8 IIP3 (dBm) LT5560 900MHz Upconverting Mixer Application: LO SSB Noise Figure vs LO Input Power 17 25°C 16 85°C –40° –10 –6 –4 –2 – ...
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... LT5560 W TYPICAL AC PERFOR A CE CHARACTERISTICS 10mA 3V 25° –2dBm, output measured at 450MHz, unless otherwise noted. (Test circuit shown in Figure 3) LO Conversion Gain and IIP3 vs RF Output Frequency 11 IIP3 25°C 85°C 7 –40° GAIN ...
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... RF – 25° 760MHz LO – 140MHz IF –100 –20 –15 –10 –5 RF INPUT POWER (dBm) LT5560 1900MHz Upconverting Mixer Application: LO LO-IN and LO-OUT Leakage vs LO Frequency 0 –10 –20 LO-OUT –30 LO-IN –40 – 1660 1710 1760 LO FREQUENCY (MHz) 5560 G22 = 900MHz – ...
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... LT5560 W TYPICAL AC PERFOR A CE CHARACTERISTICS 10mA 3V 25° –2dBm, output measured at 140MHz, unless otherwise noted. (Test circuit shown in Figure 2) LO Conversion Gain and IIP3 vs Supply Voltage 25°C 7 85°C –40° ...
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... IF –60 –70 – 25°C – 1760MHz 140MHz IF –100 –10 –10 –5 0 5560 G42 LT5560 1900MHz Downconverting Mixer Application: 8 IIP3 6 25°C 4 85°C –40°C 2 GAIN 0 –2 – 4 –6 –4 – –8 LO INPUT POWER (dBm) 5560 G39 ...
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... The LO pins are internally biased to approxi- mately 1V below V ; therefore, DC blocking capacitors CC are required. The LT5560 is characterized and production tested with a single-ended LO drive, though a differential LO drive can be used. EN (Pin 2): Enable Pin. An applied voltage above 2V will activate the IC. For V below 0 ...
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... W BLOCK DIAGRA IN IN – + PGND INPUT BUFFER AMPLIFIER + 3 – 4 DOUBLE- BALANCED MIXER BIAS LT5560 + 6 OUT – 5 OUT 5560 BD 11 5560f ...
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... AVX 04025A1R0BAT Note: C4 and C5 are not used. Figure 1. Test Schematic for 900MHz and 1900MHz Upconverting – LT5560 OUT – – IN OUT PGND = 140MHz and f = 760MHz LO REF DES L1, L2 ...
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... PGND = 140MHz and f = 760MHz LO REF DES L1 140MHz and f = 1760MHz LO REF DES L1 Mixer Applications with 140MHz Input LT5560 OUT 5560 F02 VALUE SIZE PART NUMBER 0Ω 1005 0Ω Resistor ...
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... C11 5.6pF 0603 AVX 06035A5R6BAT L1, L2 0Ω 0402 0Ω Resistor Note: C1 and C10 not used – LT5560 OUT – – IN OUT PGND = 70MHz 450MHz and f = 520MHz IN OUT LO REF DES L1 ...
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... LO operation. The LT5560 is characterized and production tested using a single-ended LO drive. The quiescent DC current of the LT5560 can be adjusted from less than 4mA to approximately 13.5mA through the use of an external resistor. This functionality gives the user the ability to make application dependent trade-offs between IIP3 performance and DC current ...
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... R S 50Ω Figure 5. Small Signal Circuit for the Input Port nH ) from the total reactance INT EXT INT 28.1Ω EXT INT 4 LT5560 5560 F05 5560f ...
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... Table 3 lists actual component values used on the LT5560 evaluation boards for impedance matching at various frequencies. The measured Input Return Loss vs Fre- quency performance is plotted for several of the cases in Figure 6. Table 3. Component Values for Input Matching FREQ. C1 CASE (MHz) T1 (pF WBC1-1TL 1:1 ...
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... LT5560 U U APPLICATIO S I FOR ATIO Reactive matching from the LO source to the LO input is recommended to take advantage of the resulting voltage gain. To assist in matching, Table 4 lists the single-ended input impedances of the LO input port. Actual com- ponent values, for several LO frequencies, are listed in Table 5. Figure 8 shows the typical return loss response for each case ...
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... ω • – LT5560 + OUT 6 R INT 1.2k 5 – OUT 5560 F09 LT5560 1082 = = 200 ) − 515Ω 1.51pF INT • 420Ω 239 nH ω ...
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... C10 can be used to improve the impedance match Table 7 lists actual component values used on the LT5560 evaluation boards for impedance matching at = 50Ω) O several frequencies. The measured output return loss ANGLE (DEG.) vs frequency performance is plotted for several of the – ...
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... APPLICATIO S I FOR ATIO Enable Interface Figure 12 shows a simplifi ed schematic of the EN pin interface. The voltage necessary to turn on the LT5560 is 2V. To disable the chip, the enable voltage must be less than 0.3V. If the EN pin is allowed to fl oat, the chip will tend to remain in its last operating state, thus it is not recom- mended that the enable function be used in this manner ...
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... U U APPLICATIO S I FOR ATIO Application Examples The LT5560 may be used as an upconverting or downconverting mixer in a wide variety of applications, in addition to those identifi the datasheet. The fol- lowing examples illustrate the versatility of the LT5560. (The component values for each case can be found in Tables 3, 5 and 7) ...
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... DC path to ground depending on whether the circuit is used at the input CC or output of the LT5560. In some cases desirable to make the value large as practical to minimize DC loading on the circuit; however, the value can also be op- timized to tune the impedance match. The shunt inductor provides the DC path for the other balanced port ...
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... Measured data for the examples below are summarized in Table 8. Table 8. Low-Frequency Performance f IN (MHz) 200 90 R2 160Ω C5 10nF – 200Ω LT5560 OUT 4 5 – – IN OUT PGND IIP3 DSB NF OUT C (MHz) (dB) (dBm) (dB) 0. ...
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... 200Ω LT5560 OUT 5 4 – – IN OUT PGND 9 LT5560 R8 C6 5.1kΩ 1nF C13 200Ω 200Ω 5.1kΩ 1µF C11 1µF C14 + 1µF C12 51Ω U2 1µF LT6202 – R6 200Ω 1µF ...
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... LT5560 U TYPICAL APPLICATIO S Figure 24. Downconverting Mixer Evaluation Board (DC991A)—See Table 1 26 Figure 25. HF/VHF/UHF Upconverting or Downconverting Mixer Evaluation Board (DC1027A)—See Table 1 5560f ...
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... Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 0.675 ±0.05 PACKAGE OUTLINE 0.50 BSC 2.38 ±0.05 (2 SIDES) 3.00 ±0.10 1.65 ± 0.10 (2 SIDES) (4 SIDES) 0.75 ±0.05 0.00 – 0.05 LT5560 R = 0.115 0.38 ± 0.10 TYP 5 8 (DD8) DFN 1203 4 1 0.25 ± 0.05 0.50 BSC 2.38 ±0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD 5560f ...
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... LT5560 RELATED PARTS PART NUMBER DESCRIPTION Infrastructure LT5511 High Linearity Upconverting Mixer LT5512 1KHz to 3GHz High Signal Level Downconverting Mixer LT5514 Ultralow Distortion, IF Amplifi er/ADC Driver with Digitally Controlled Gain LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator LT5516 0.8GHz to 1.5GHz Direct Conversion Quadrature ...