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| Preliminary GaAs PHEMT Switchable Gain LNA AL108-338 Features For 3.2-3.8 GHz Fixed Wireless Applications Adjustable Gain +7 dBm Output Power +17 dBm Output IP3 2.7 dB Noise Figure Single +5 V Supply Input and Output Matched to 50 Description The AL108-338 is an LNA designed for use in 3.2-3.8 GHz WLAN applications. The leadless surface mount package houses a GaAs PHEMT MMIC that yields low noise, good 50 match, high gain and powerful P1 dB performance. Powered by a single 5 V supply, it also offers a 10 dB gain adjustment range. Absolute Maximum Ratings Characteristic RF Input Power Bias Voltage Storage Temperature Operating Temperature Value 20 dBm 6 V Max. -40 to +85C -65 to +150C Electrical Specifications at 25C (3.2-3.8 GHz) Control Voltage = 0 V, Bias Voltage = 5 V, ID = 85 mA Parameter Gain Output P-1 dB Output IP3 Noise Figure Reverse Isolation Input VSWR Output VSWR 50 System 50 System 30 PIN = -30 dBm 18 Condition Frequency Min. 19 Typ. 21 6 19 2.5 40 1.5:1 1.5:1 2.0:1 2.0:1 2.9 Max. Unit dB dBm dBm dB dB Control Voltage = 5 V, Bias Voltage = 5 V, ID = 85 mA Parameter Gain Output P-1 dB Output IP3 Noise Figure Reverse Isolation Input VSWR Output VSWR 50 System 50 System 30 PIN = -30 dBm Condition Frequency Min. 8 20 Typ. 10 6 23 9 40 1.5:1 1.5:1 2.0:1 2.0:1 10 Max. Unit dB dBm dBm dB dB Alpha Industries, Inc. [978] 241-7000 * Fax [978] 241-7906 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/02A 1 GaAs PHEMT Switchable Gain LNA AL108-338 Typical Performance Data at 25C 15 Gain (Low) 25 Gain (dB),POUT (dBm) 10 5 0 POUT (dBm) -5 -10 -15 -25 -20 -15 -10 -5 0 5 10 Gain (dB),POUT (dBm) 20 15 10 Gain (High) POUT (dBm) 5 0 -25 -20 -15 -10 -5 0 5 10 PIN (dBm) PIN (dBm) Gain and Output Power (Low Gain mode) 25 High Gain State 20 2.0 1.9 1.8 1.7 Gain and Output Power (High Gain mode) Gain (dB) VSWR 15 Low Gain State 10 5 0 3.0 3.2 3.4 3.6 3.8 4.0 1.6 1.5 1.4 1.3 1.2 1.1 1.0 3.0 Output (Low Gain) Input (Low Gain) Output (High Gain) Input (High Gain) 3.2 3.4 3.6 3.8 4.0 Frequency (GHz) Frequency (GHz) Gain vs. Frequency 12 Low Gain 10 8 6 4 2 0 3.1 VSWR vs. Frequency Evaluation Board 0.850 Voltage Control Bias Voltage NF (dB) High Gain RF Input 0.018 RF 0.850 Output 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Frequency (GHz) Noise Figure vs. Frequency Dimensions in inches. 2 Alpha Industries, Inc. [978] 241-7000 * Fax [978] 241-7906 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/02A GaAs PHEMT Switchable Gain LNA AL108-338 Pin Out (Top View) Gain Control Bias Voltage 1000 pF 16 N/C 14 N/C Package Outline (Bottom View) 0.040 TYP. 13 12 16 1 0.026 TYP. 1000 pF 15 N/C 1 RF Input 2 13 12 N/C 0.157 11 10 N/C 9 N/C RF Output 0.013 TYP. 9 8 5 0.157 4 0.014 TYP. N/C 3 N/C 4 N/C 5 N/C 6 N/C 7 Ground is connected to paddle on bottom. Truth Table Low Gain High Gain VC = 5 V VC = 0 V Typical S-Parameters (Control Voltage 0/+5 V) Low Gain State # GHZ S MA R 50 Freq. (GHz) 1.0 1.5 2.0 2.5 3.0 4.0 4.5 5.0 5.5 6.0 S11 S11a S21 0.4417 S21a 2.26 S12 0.0054 S12a 25.28 S22 S22a High Gain State # GHZ S MA R 50 S11 S11a S21 2.2489 S21a 65.05 S12 0.0055 S12a 91.43 97.84 69.36 70.40 S22 S22a 0.0531 65.99 0.1204 91.60 0.1362 14.12 0.1651 -29.48 0.1572 13.82 0.4082 0.5055 4.29 -4.96 0.1093 132.60 0.0081 1.3032 -101.06 0.0042 2.5615 153.17 0.0024 3.7729 53.89 0.0059 2.9632 -128.83 0.0055 1.9123 157.00 0.0063 1.1534 92.88 0.6649 35.33 N/C 8 0.2937 -93.69 0.5023 11.44 0.3677 -60.06 0.1954 -1.39 0.2221 -171.21 0.0013 -19.22 0.2935 -93.51 0.2265 -86.97 0.346 0.359 -60.19 -88.94 12.81 34.37 27.80 20.63 18.02 -24.99 0.2428 -84.55 -17.39 0.2899 -73.12 11.52 35.81 -83.69 0.323 -74.12 0.3019 -83.48 0.267 36.24 0.4475 -131.33 10.3201 -81.96 0.0066 13.8498 143.35 0.0036 0.0062 0.1133 -15.23 13.6149 42.94 0.324 -9.03 0.2228 -80.36 4 -55.78 0.0637 17.93 0.2741 -14.00 10.2202 -144.57 0.006 0.3458 -8.19 0.2818 -14.80 0.1318 34.49 2.7131 1.1847 59.91 0.28 -16.85 0.0713 5.7473 131.66 0.0009 -29.68 0.2643 0.003 -119.30 0.3786 0.0025 -177.50 0.4481 0.5351 -14.30 0.4906 -31.11 0.2427 -72.20 0.0027 -148.15 0.3803 26.63 0.0062 -179.25 0.4498 21.69 0.44 18.28 0.3686 -25.59 0.0079 138.81 0.4931 -55.56 0.0039 170.99 0.4398 Measured S-Parameters represent the packaged device. Alpha Industries, Inc. [978] 241-7000 * Fax [978] 241-7906 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/02A 3 |
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