MANUA ALUAT DATA SHEET FOLLO 900MHz SiGe, High IP3, Low-Noise Amp
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MANUA ALUAT DATA SHEET FOLLO
900MHz SiGe, High IP3, Low-Noise Amplifiers
Wide Frequency Range: 800MHz 1000MHz High Output Adjustable +17dBm 5.3mA +7dBm 2.8mA Noise Figure: 1.3dB 900MHz 13dB Attenuation Step (MAX2642) On-Chip Output Matching Low-Power Shutdown Mode +2.7V +5.5V Single-Supply Operation Ultra-Small SC70-6 Package
General Description
MAX2642/MAX2643 low-cost, high third-order intercept point (IP3), low-noise amplifiers (LNAs) designed applications cellular, ISM, SMR, systems. They feature programmable bias, allowing supply current optimized specific applications. These LNAs provide 0dBm input while maintaining noise figure 1.3dB. gain these devices typically 17dB. MAX2642 also features 13dB attenuation step, which extends LNA's dynamic range. Both devices feature shutdown mode that minimizes power consumption. On-chip output matching saves board space reducing number external components. MAX2642/MAX2643 designed low-noise, advanced silicon-germanium (SiGe) process technology. They operate from +2.7V +5.5V single supply available ultra-small 6-pin SC70 package.
MAX2642/MAX2643
_Applications
800MHz/900MHz Cellular Phones 900MHz Cordless Phones 868MHz/900MHz ISM-Band Wireless Data PMR/SMR/LMR
MAX2642EXT-T MAX2643EXT-T PART
Ordering Information
TEMP. RANGE -40°C +85°C -40°C +85°C PINPACKAGE SC70-6 SC70-6 MARK
Typical Operating Circuit
47pF
Configuration
GAIN (ENABLE) BIAS BIAS
MAX2642 MAX2643
VIEW
RBIAS
BIAS
HIGH GAIN (SHUTDOWN)
RFOUT
8.7nH 3.3pF (10k) RFIN RFOUT OUTPUT
MAX2642 MAX2643
INPUT
RFIN
SC70-6
MAX2643.
Maxim Integrated Products
free samples latest literature, visit www.maxim-ic.com phone 1-800-998-8800. small orders, phone 1-800-835-8769.
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
ABSOLUTE MAXIMUM RATINGS
.-0.3V RFOUT GND.-0.3V (VCC 0.3V) RFIN 0.9V RFIN Power source) .+5dBm BIAS +0.3V Operating Temperature Range .-40°C +85°C Maximum Junction Temperature .+150°C Continuous Power Dissipation +70°C) SC70-6 (derate 3.1mW/°C above +70°C) .245mW Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10s) .+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS-MAX2642
(VCC +2.7V +5.5V, -40°C +85°C, signal applied, RFIN RFOUT AC-coupled terminated highgain mode. Typical values 3.0V, +25°C, unless otherwise noted.) (Notes
PARAMETER Supply Voltage
CONDITIONS High-gain mode, BIAS 510, +25°C RBIAS 510, -40°C +85°C
UNITS
Operating Supply Current
RBIAS RBIAS 1.1k Low-gain mode, BIAS 510, 25°C
Shutdown Supply Current Gain Control Voltage Input Gain Control Input Current
BIAS unconnected (see Applications Information) High-gain mode (Note Low-gain mode (Note High-gain mode (Note Low-gain mode (Note
ELECTRICAL CHARACTERISTICS-MAX2643
(VCC +2.7V +5.5V, -40°C +85°C, signal applied, RFIN RFOUT AC-coupled terminated Typical values 3.0V, +25°C, unless otherwise noted.) (Notes
PARAMETER Supply Voltage
CONDITIONS RBIAS 510, +25°C
UNITS
Operating Supply Current
RBIAS 510, -40°C +85°C RBIAS RBIAS 1.1k Shutdown mode (see Applications Information) Normal operation (Note Shutdown mode (Note Normal operation (Note Shutdown mode (Note
Shutdown Supply Current Shutdown Control Input Voltage Shutdown Control Input Current
900MHz SiGe, High IP3, Low-Noise Amplifiers
ELECTRICAL CHARACTERISTICS
(MAX2642/MAX2643 kits, PRFIN -30dBm, fRFIN 900MHz, input output terminated +3.0V, +25°C, RBIAS 510, unless otherwise noted.) (Note
MAX2642/MAX2643
PARAMETER Operating Frequency Range Gain (Note Gain Variation Over Temperature Attenuation Step Input Third-Order Intercept Point (Note Input Compression Point Noise Figure (Note Input Return Loss Output Return Loss Reverse Isolation Gain-Step Response Time Shutdown Response Time
Note Note Note Note Note Note Note Note Note Note Note Note Note Note Note Note
CONDITIONS (Note +25°C -40°C +85°C MAX2642 only RBIAS RBIAS RBIAS 1.1k MAX2642, low-gain mode MAX2642, low-gain mode
14.5
16.7 ±0.35 1.35
1000 ±0.75
UNITS
MAX2642, low-gain mode MAX2642, low-gain mode MAX2642, low-gain mode MAX2642 MAX2643 MAX2642, through series switch BIAS
Devices production tested +25°C. Minimum maximum values guaranteed design characterization over temperature supply voltage. High-gain mode MAX2642 connecting RFOUT through resistor. Low-gain mode applicable only MAX2642 connecting RFOUT through resistor. Maximum voltage through resistor that sets MAX2642 operate high-gain mode. Minimum voltage through resistor that sets MAX2642 operate low-gain mode. current required when RFOUT connected through resistor (MAX2642) resistor (MAX2643). current required when RFOUT connected through resistor (MAX2642) resistor (MAX2643). Normal operation MAX2643 connecting RFOUT through resistor. Shutdown MAX2643 connecting RFOUT through resistor. Minimum voltage through resistor that sets MAX2643 operate normal mode. Maximum voltage through resistor that sets MAX2643 operate shutdown mode. Min/Max limits guaranteed design characterization, except gain production tested +25°C. part been characterized specified frequency range. Operation outside this range possible guaranteed. Devices production tested +25°C. Measured with input tones, 895MHz 905MHz, both -30dBm tone. Excludes board losses (0.25dB typical input MAX2642/MAX2643 kit).
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Typical Operating Characteristics
(MAX2642/MAX2643 kits, +3.0V, PRFIN -30dBm, input output terminated fRFIN 900MHz, RBIAS 510, high-gain mode (low-gain mode applicable only MAX2642), +25°C, unless otherwise noted.)
INPUT THIRD-ORDER INTERCEPT RBIAS (HIGH GAIN)
MAX2642/43-01
MAX2642/43-02
INPUT (dBm) -40°C +25°C +85°C
MATCHED 900MHz GAIN
NOISE FIGURE (dB)
INPUT (dBm)
+85°C
HIGH GAIN
-40°C +25°C
1000 1200 1400 1600 1800 RBIAS 1000 RBIAS 1500 2000
1000 FREQUENCY (MHz)
NOISE FIGURE TEMPERATURE
MAX2642/43-04
P1dB RBIAS
MAX2642/43-05
OUTPUT POWER INPUT POWER
POUT (dBm) 1.1k, GAIN 806, GAIN 510, GAIN 510, HIGH GAIN 806, HIGH GAIN 1.1k, HIGH GAIN
MAX2642/43-06 MAX2642/43-09
NOISE FIGURE (dB) GAIN HIGH GAIN
+85°C, GAIN P1dB (dBm) -40°C, HIGH GAIN +25°C, GAIN +85°C, HIGH GAIN -40°C, GAIN
+25°C, HIGH GAIN
1000 1200 1400 1600 1800 RBIAS
TEMPERATURE (°C)
(dBm)
GAIN RBIAS
+85°C, GAIN 1000 1200 1400 1600 1800 RBIAS() GAIN (dB)
MAX2642/43-07
GAIN SUPPLY VOLTAGE
MAX2642/43-08
GAIN FREQUENCY
GAIN (dB) HIGH-GAIN MODE MATCHED 900MHz
GAIN (dB) -40°C, HIGH GAIN
-40°C, HIGH GAIN +25°C, HIGH GAIN +85°C, HIGH GAIN
+25°C, HIGH GAIN +85°C, HIGH GAIN -40°C, GAIN +25°C, GAIN
+25°C, GAIN -40°C, GAIN
+85°C, GAIN
LOW-GAIN MODE
1000 FREQUENCY (MHz)
MAX2642/43-03
MAX2642 INPUT THIRD-ORDER INTERCEPT RBIAS (LOW GAIN)
NOISE FIGURE FREQUENCY
900MHz SiGe, High IP3, Low-Noise Amplifiers
Typical Operating Characteristics (continued)
(MAX2642/MAX2643 kits, +3.0V, PRFIN -30dBm, input output terminated fRFIN 900MHz, RBIAS 510, high-gain mode (low-gain mode applicable only MAX2642), +25°C, unless otherwise noted.)
MAX2642 ATTENUATION STEP FREQUENCY
MAX2642/43-10
MAX2642/MAX2643
RETURN LOSS FREQUENCY (HIGH GAIN)
MAX2642/43-11
MAX2642 RETURN LOSS FREQUENCY (LOW GAIN)
MATCHED 900MHz
MAX2642/43-12
14.0 13.8 ATTENUATION STEP (dB) 13.6 13.4 13.2 13.0 12.8 12.6
MATCHED 900MHz
ATTENUATION STEP (dB)
MATCHED 900MHz INPUT
RETURN LOSS (dB)
OUTPUT
OUTPUT
INPUT
1000 FREQUENCY (MHz)
1000 FREQUENCY (MHz)
1000 FREQUENCY (MHz)
REVERSE ISOLATION FREQUENCY
MATCHED 900MHz
MAX2642/43-13
MAX2642 HIGH/LOW-GAIN SWITCH CHARACTERISTICS
MAX2642/43-14
MAX2643 SHUTDOWN CHARACTERISTICS
OUTPUT POWER (dBm) VRFOUT
MAX2642/43-15
RETURN LOSS (dB)
OUTPUT POWER (dBm) VRFOUT
GAIN
HIGH GAIN 1000 FREQUENCY (MHz)
TIME (400ns/div) TIME (4µs/div)
SUPPLY CURRENT RBIAS
MAX2642/43-16
SHUTDOWN CURRENT TEMPERATURE
MAX2642/43-17
SUPPLY CURRENT SUPPLY VOLTAGE
SUPPLY VOLTAGE (mA) +25°C, HIGH GAIN -40°C, GAIN -40°C, HIGH GAIN +85°C, HIGH GAIN +85°C, GAIN +25°C, GAIN
MAX2642/43-18
SUPPLY CURRENT (mA) -40°C, HIGH GAIN +85°C, GAIN +85°C, HIGH GAIN +25°C, GAIN +25°C, HIGH GAIN -40°C, GAIN
5.5V
SHUTDOWN CURRENT (µA)
0.01
3.0V
0.001
0.0001 1000 1200 1400 1600 RBIAS TEMPERATURE (°C)
SUPPLY VOLTAGE
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Description
NAME BIAS RFIN RFOUT FUNCTION Resistor Bias Control. Connect resistor, RBIAS, from BIAS ground. RBIAS sets supply current (see Applications Information). current through this approximately 50mV divided RBIAS. Ground. optimum performance, provide low-inductance connection ground plane. Amplifier Input. AC-couple this with DC-blocking capacitor. External matching network required optimum performance. Supply Voltage. Bypass with 47pF capacitor directly ground supply pin. Additional bypassing necessary long lines. Amplifier Output. Internally matched bias this selects gain mode (MAX2642) shutdown mode (MAX2643) (see Applications Information).
Applications Information
Input Matching
Input matching required optimum performance. MAX2642/MAX2643 require simple matching network, shown Typical Operating Circuit. further reduce cost external component count, replace external inductor with microstrip transmission line. Typical Operating Circuit shows recommended input-matching networks MAX2642/ MAX2643 900MHz. These values optimized best simultaneous gain, noise figure, return-loss performance. design matching network other frequencies, Tables list typical device S-parameters various biases, Tables list typical device noise parameters.
Shutdown
MAX2643, recommended shutdown method voltage RFOUT manner similar MAX2642's attenuation step. That when voltage RFOUT below +0.6V, device shut down; voltage greater than +2.0V, device enabled. MAX2642, shutdown achieved leaving BIAS unconnected. Figure shows suggested shutdown methods. Avoid capacitance BIAS connecting bias resistor from BIAS switch. Table summarizes operational modes.
Layout Issues
properly designed board essential RF/microwave circuit. controlled impedance lines high-frequency inputs outputs. Bypass with decoupling capacitors located close device pin. long lines, necessary additional decoupling capacitors. These additional capacitors located farther away from device package. Proper grounding pins essential. board uses topside ground, connect directly pins. board where ground plane component layer, best technique connect pins board with plated through-hole located close package.
Attenuation Step (MAX2642)
MAX2642's bias voltage RFOUT serves attenuation step input. When voltage RFOUT through resistor less than +0.6V, device high-gain mode; voltage greater than +2.0V, device low-gain mode. standard logic output applied shown Typical Operation Circuit. bias applied, device high-gain mode.
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642/MAX2643 Typical Scattering Parameters
(RBIAS 510, high-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.832641 0.825168 0.785389 0.73798 0.728099 0.718704 0.711335 0.705742 0.699509 0.695913 0.690406 0.68522 0.681722 0.675328 0.657582 0.635999 0.616881 0.602418 0.587409
PHASE (DEGREES) -69.5831 -83.7622 -97.3356 -108.682 -110.578 -112.499 -114.276 -115.973 -117.585 -119.117 -120.995 -122.642 -124.345 -126.035 -134.195 -141.558 -147.886 -153.992 -158.21
2.390806 3.836967 4.983279 5.320575 5.286 5.241719 5.185213 5.118265 5.050356 4.973824 4.897571 4.826106 4.735407 4.650673 4.29304 3.998256 3.777511 3.547677 3.338385
PHASE (DEGREES) -119.18 -136.451 -161.126 174.5337 170.3323 166.3987 162.4763 158.9238 155.6292 152.4338 149.4286 146.6999 143.8275 141.4611 130.7613 121.5475 113.2893 105.6808 97.62961
0.010763 0.019608 0.02988 0.036197 0.037193 0.037266 0.039143 0.039563 0.042586 0.041805 0.04301 0.046528 0.04524 0.046036 0.053825 0.061434 0.066092 0.075756 0.076491
PHASE (DEGREES) 166.6047 167.8741 148.5203 134.8794 132.505 129.1671 128.0447 128.4158 128.075 126.9362 122.9564 122.0997 121.0474 120.1779 116.4169 109.6365 103.583 99.08275 92.84421
0.878515 0.731997 0.481344 0.215462 0.171633 0.135415 0.100779 0.076864 0.062918 0.06007 0.065287 0.077374 0.090494 0.103072 0.156945 0.198686 0.240437 0.283245 0.326279
PHASE (DEGREES) -74.01422 -98.95091 -125.1027 -142.0387 -141.9486 -139.9869 -133.8375 -121.3533 -102.3972 -81.32555 -62.51575 -50.8638 -44.30662 -40.69565 -34.00603 -32.62157 -33.12784 -36.62076 -40.68451
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642/MAX2643 Typical Scattering Parameters
(RBIAS 806, high-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.865705 0.853946 0.820187 0.775557 0.765138 0.759 0.7495 0.741722 0.736069 0.728957 0.724118 0.719676 0.714506 0.709103 0.691292 0.67035 0.650556 0.635363 0.616202
PHASE (DEGREES) -67.5629 -80.7084 -94.1329 -104.428 -106.343 -108.042 -109.928 -111.683 -113.369 -115.127 -116.951 -118.584 -120.313 -121.959 -129.341 -136.703 -143.014 -148.565 -153.536
1.788918 2.926709 3.884537 4.237314 4.226094 4.214913 4.182436 4.134814 4.085018 4.032105 3.965561 3.903364 3.83867 3.777 3.483283 3.27255 3.09574 2.934971 2.756155
PHASE (DEGREES) -115.899 -132.446 -157.426 177.9528 173.3886 169.298 165.3457 161.548 157.8688 154.6118 151.3371 148.3141 145.3527 142.7001 131.8578 121.9156 113.1691 105.3286 96.43876
0.009763 0.021656 0.029766 0.036728 0.038253 0.038842 0.040084 0.04118 0.04194 0.044642 0.044574 0.044792 0.045551 0.046434 0.054775 0.061407 0.064829 0.075142 0.074664
PHASE (DEGREES) 164.6001 165.374 148.5047 130.1148 129.5942 128.7876 127.3742 127.2791 125.3719 123.3553 121.8034 120.7695 118.109 119.036 114.7347 108.2008 103.5856 97.9223 92.88747
0.880237 0.739354 0.49107 0.216415 0.166772 0.121201 0.082263 0.045314 0.016624 0.021369 0.043243 0.066898 0.084163 0.102269 0.169693 0.220689 0.26965 0.315264 0.360706
PHASE (DEGREES) -73.81893 -99.52715 -128.1454 -153.3392 -157.7809 -160.7175 -160.9349 -158.0615 -133.0426 -38.41852 -17.90431 -14.20027 -12.76007 -13.88384 -18.18657 -21.72272 -24.86245 -30.21604 -35.70454
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642/MAX2643 Typical Scattering Parameters
(RBIAS 1.1k, high-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.878512 0.86813 0.834311 0.793611 0.783644 0.774329 0.767016 0.762463 0.753622 0.748921 0.743011 0.737437 0.733572 0.729122 0.710864 0.688941 0.668471 0.655478 0.638124
PHASE (DEGREES) -66.0475 -79.0081 -91.9431 -102.384 -104.098 -105.921 -107.766 -109.461 -111.254 -113.148 -114.988 -116.709 -118.379 -119.87 -127.286 -134.781 -141.275 -146.685 -152.12
1.445864 2.398259 3.218232 3.544617 3.563583 3.546937 3.529998 3.500193 3.463616 3.419726 3.36768 3.309045 3.261195 3.203007 2.970843 2.789044 2.637086 2.491515 2.352013
PHASE (DEGREES) -114.652 -131.281 -155.869 179.1002 174.4488 170.1934 165.871 161.8438 158.0655 154.6982 151.2749 148.0373 145.4087 142.5148 130.8328 120.5809 111.4044 103.3737 94.07729
0.011049 0.01977 0.033312 0.038594 0.040112 0.038383 0.04004 0.041375 0.043587 0.043975 0.045614 0.044426 0.046581 0.048343 0.055616 0.061803 0.065281 0.073887 0.077901
PHASE (DEGREES) 175.9688 166.0087 149.3926 131.9641 131.6111 128.1902 126.4807 124.4402 123.8527 123.9237 121.0385 118.9012 118.374 116.9249 115.1579 105.9973 100.6171 96.84646 90.34502
0.882121 0.745577 0.502282 0.223248 0.173175 0.126351 0.086328 0.049822 0.020398 0.024778 0.04661 0.070736 0.092621 0.110062 0.183756 0.238134 0.289607 0.335752 0.381179
PHASE (DEGREES) -73.97408 -100.0799 -129.8978 -160.5161 -166.8809 -173.2415 178.6352 167.1237 128.5957 48.71712 18.5372 10.02515 4.197083 -0.293905 -10.46082 -16.81635 -21.34393 -27.6725 -33.81158
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642 Typical Scattering Parameters
(RBIAS 510, low-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.757279 0.75734 0.696969 0.626874 0.616023 0.608751 0.600617 0.596488 0.593722 0.590101 0.588409 0.589625 0.588079 0.588646 0.597562 0.6066 0.617079 0.628195 0.640304
PHASE (DEGREES) -68.0641 -84.3042 -98.422 -107.497 -108.596 -109.794 -110.754 -111.776 -112.739 -113.712 -114.834 -115.806 -116.828 -117.975 -124.002 -129.873 -136.272 -142.195 -147.446
0.186886 0.715305 1.140352 1.272844 1.267541 1.258504 1.242296 1.22394 1.203776 1.181885 1.156787 1.129734 1.102653 1.074686 0.952505 0.852237 0.778154 0.718399 0.656535
PHASE (DEGREES) -175.019 -146.702 -174.61 157.4571 152.644 148.0772 143.7583 139.7228 135.9799 132.3471 128.909 125.6671 122.5478 119.9067 108.5103 99.7348 92.06538 85.7905 78.77735
0.032297 0.066113 0.099941 0.115242 0.116521 0.117601 0.119312 0.122318 0.124196 0.125203 0.126462 0.127369 0.127952 0.12743 0.134236 0.138354 0.142609 0.153771 0.149518
PHASE (DEGREES) 163.9787 148.5775 124.8504 103.1406 100.3007 97.74948 95.48379 93.07481 90.21815 86.9857 84.27329 82.07469 80.98836 79.48192 72.42102 65.08001 58.40858 52.64912 46.71009
0.87996 0.71413 0.449346 0.201112 0.165909 0.137812 0.118557 0.106845 0.103446 0.108109 0.116508 0.129083 0.140436 0.151608 0.206216 0.252003 0.295689 0.33692 0.374046
PHASE (DEGREES) -73.8882 -98.6736 -121.361 -127.267 -123.451 -116.955 -107.057 -93.617 -81.5882 -70.2192 -61.7886 -55.1485 -52.3827 -48.4917 -43.8143 -43.9084 -46.8967 -51.7496 -56.7658
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642 Typical Scattering Parameters
(RBIAS 806, low-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.800327 0.793203 0.736656 0.676741 0.666567 0.660377 0.651791 0.651106 0.643048 0.643064 0.641773 0.640079 0.641175 0.641025 0.647379 0.651053 0.65637 0.662035 0.665418
PHASE (DEGREES) -67.1945 -81.9096 -95.21 -103.586 -104.763 -106.009 -107.125 -108.175 -109.302 -110.728 -111.842 -113.103 -114.555 -115.739 -121.754 -128.101 -134.578 -139.905 -145.73
0.142134 0.543072 0.885917 1.005172 1.005053 0.998032 0.990225 0.978178 0.961026 0.942776 0.923851 0.90238 0.879907 0.857382 0.760331 0.685309 0.623917 0.582929 0.53929
PHASE (DEGREES) -174.341 -143.848 -171.542 159.8524 154.9507 150.1753 145.7345 141.4141 137.4554 133.7632 130.1361 126.9098 123.7699 120.9598 109.613 100.4887 93.1824 86.98415 79.50793
0.034805 0.067027 0.101665 0.114894 0.115809 0.118042 0.118937 0.121575 0.120654 0.123645 0.123333 0.12394 0.123001 0.122316 0.127968 0.131962 0.132337 0.142149 0.138295
PHASE (DEGREES) 161.583 146.5234 122.4962 101.0446 97.08399 94.72314 91.64486 89.19647 86.75212 83.74419 80.71953 78.64308 76.38534 74.64619 68.72507 62.04964 56.01043 51.5965 45.87176
0.88084 0.719105 0.449898 0.183694 0.143872 0.109486 0.085206 0.071836 0.0738 0.084769 0.098778 0.117484 0.132356 0.145883 0.209937 0.260554 0.303628 0.34549 0.382116
PHASE (DEGREES) -73.57176 -99.08562 -124.5513 -136.0146 -133.6185 -125.307 -112.6535 -92.15154 -70.16955 -54.68721 -46.62902 -40.63098 -38.28101 -35.93101 -35.70716 -37.84105 -41.83445 -46.96146 -52.44192
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642 Typical Scattering Parameters
(RBIAS 1.1, low-gain mode, +3.0V, +25°C.)
FREQ (MHz) 1000 1100 1200 1300 1400 1500
0.822139 0.808058 0.755255 0.703243 0.694461 0.687512 0.683106 0.678346 0.674815 0.672424 0.671111 0.669825 0.670457 0.669392 0.674741 0.675283 0.679379 0.682813 0.681251
PHASE (DEGREES) -66.5029 -80.314 -93.0574 -101.403 -102.693 -103.96 -105.16 -106.424 -107.654 -109.092 -110.488 -111.738 -113.266 -114.649 -120.914 -127.763 -134.523 -139.869 -145.854
0.116321 0.439837 0.72921 0.838753 0.839017 0.836295 0.82921 0.818297 0.807407 0.791395 0.775375 0.757139 0.737655 0.719178 0.638029 0.575544 0.52948 0.494615 0.462984
PHASE (DEGREES) -174.275 -143.103 -170.915 160.4014 155.3972 150.551 145.8221 141.5384 137.4799 133.7297 129.9834 126.6652 123.3462 120.6109 109.1083 100.3768 92.75184 86.94255 79.4068
0.03386 0.065964 0.0999 0.115609 0.116069 0.117021 0.116949 0.119552 0.121372 0.122328 0.120584 0.120221 0.120881 0.11967 0.123318 0.125601 0.126691 0.133067 0.128294
PHASE (DEGREES) 162.1213 146.0581 121.1126 98.56961 94.64113 92.14834 88.49732 86.39616 83.98519 80.33097 78.46327 75.62165 73.65825 71.31908 66.28802 58.42145 54.07481 49.83734 43.41453
0.879442 0.724703 0.457496 0.181063 0.138616 0.098228 0.068493 0.049577 0.052964 0.070844 0.089595 0.110248 0.125584 0.14489 0.21152 0.264377 0.308252 0.348366 0.386044
PHASE (DEGREES) -73.74798 -99.6653 -126.0206 -141.9359 -140.7761 -136.1769 -122.4536 -93.92001 -64.05054 -44.45571 -37.15094 -31.16879 -29.76813 -28.6178 -30.89364 -34.10688 -38.78385 -44.59462 -50.022
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table MAX2642/MAX2643 Typical Noise Parameters
(RBIAS 510, high-gain mode, +3.0V, +25°C.)
FREQUENCY (MHz) 1000
NFMIN (dB) 1.011 1.023 1.030 1.037 1.045 1.053 1.069
0.3074 0.3016 0.2990 0.2965 0.2942 0.2919 0.2879
PHASE (DEGREES) 55.04 58.89 60.83 62.77 64.70 66.62 70.40
13.11 13.28 13.38 13.49 13.60 13.72 13.96
Table MAX2642/MAX2643 Typical Noise Parameters
(RBIAS 806, high-gain mode, +3.0V, +25°C.)
FREQUENCY (MHz) 1000
NFMIN (dB) 1.149 1.161 1.168 1.176 1.185 1.194 1.213
0.3905 0.3832 0.3798 0.3766 0.3735 0.3705 0.3650
PHASE (DEGREES) 54.95 58.63 60.49 62.35 64.21 66.06 69.72
15.14 15.32 15.43 15.55 15.68 15.82 16.11
Table MAX2642/MAX2643 Typical Noise Parameters
(RBIAS 1.1k, high-gain mode, +3.0V, +25°C.)
FREQUENCY (MHz) 1000
NFMIN (dB) 1.312 1.325 1.333 1.342 1.352 1.363 1.385
0.4473 0.4391 0.4353 0.4317 0.4282 0.4249 0.4186
PHASE (DEGREES) 55.50 59.12 60.96 62.79 64.63 66.46 70.08
17.64 17.83 17.96 18.11 18.26 18.43 18.78
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
Table Gain Selection Shutdown Modes
BIAS BIAS
PART MAX2642 MAX2643
CONTROL VOLTAGE Gain Enabled
CONTROL VOLTAGE High Gain Shutdown
RBIAS
MAX2642
RBIAS
MAX2642
Chip Information
TRANSISTOR COUNT:
Figure MAX2642 Recommended Shutdown Configurations
900MHz SiGe, High IP3, Low-Noise Amplifiers
Package Information
SC70, 6L.EPS
MAX2642/MAX2643
900MHz SiGe, High IP3, Low-Noise Amplifiers MAX2642/MAX2643
NOTES
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