AL108-338 ALPHA | Alldatasheet

Document overview

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Technical content

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 Ω AL108-338

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 Ω match, high gain and powerful P 1 dB performance. Powered by a single 5 V supply, it also offers a 10 dB gain adjustment range. Parameter Condition Frequency Min. Typ. Max. Unit Gain 19 21 dB Output P-1 dB 6 dBm Output IP3 P IN = -30 dBm 18 19 dBm Noise Figure 2.5 2.9 dB Reverse Isolation 30 40 dB Input VSWR 50 Ω System 1.5:1 2.0:1 Output VSWR 50 Ω System 1.5:1 2.0:1 Electrical Specifications at 25°C (3.2–3.8 GHz) Control Voltage = 0 V, Bias Voltage = 5 V, I D = 85 mA Parameter Condition Frequency Min. Typ. Max. Unit Gain 81 0 d B Output P-1 dB 6 dBm Output IP3 P IN = -30 dBm 20 23 dBm Noise Figure 91 0 d B Reverse Isolation 30 40 dB Input VSWR 50 Ω System 1.5:1 2.0:1 Output VSWR 50 Ω System 1.5:1 2.0:1 Control Voltage = 5 V, Bias Voltage = 5 V, I D = 85 mA Preliminary Characteristic Value RF Input Power 20 dBm Bias Voltage 6 V Max. Storage Temperature -40 to +85°C Operating Temperature -65 to +150°C Absolute Maximum Ratings

GaAs PHEMT Switchable Gain LNA AL108-338 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 Gain and Output Power (Low Gain mode) -15 -10 -25 -20 -15 -10 -5 0 5 10 PIN (dBm) Gain (dB),POUT (dBm) POUT (dBm) Gain (Low) Gain vs. Frequency Frequency (GHz) Gain (dB) High Gain State Low Gain State Noise Figure vs. Frequency Frequency (GHz) NF (dB) High Gain Low Gain VSWR vs. Frequency Frequency (GHz) VSWR 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Input (High Gain) Output (High Gain) Input (Low Gain) Output (Low Gain) Gain and Output Power (High Gain mode) -25 -20 -15 -10 -5 0 5 10 PIN (dBm) Gain (dB),POUT (dBm) POUT (dBm) Gain (High) Typical Performance Data at 25°C 0.850 0.850 RF Input RF Output Voltage Control Bias Voltage 0.018 Evaluation Board Dimensions in inches.

GaAs PHEMT Switchable Gain LNA AL108-338 Alpha Industries, Inc. [978] 241-7000 • Fax [978] 241-7906 • Email sales@alphaind.com • www.alphaind.com 3 Specifications subject to change without notice. 1/02A RF Input N/C N/C N/C N/C N/C RF Output N/C Bias Voltage N/CN/C N/C N/C N/C N/C Gain Control 1000 pF1000 pF Pin Out (Top View) 1613 0.157 0.026 TYP . 0.157 0.040 TYP . 0.013 TYP . 0.014 TYP . Package Outline (Bottom View) Ground is connected to paddle on bottom. Measured S-Parameters represent the packaged device. Low Gain V C = 5 V High Gain V C = 0 V Truth Table Typical S-Parameters (Control Voltage 0/+5 V) Low Gain State High Gain State # GHZ S MA R 50 # GHZ S MA R 50 Freq. (GHz) S 11 S11a S21 S21a S12 S12a S22 S22a S11 S11a S21 S21a S12 S12a S22 S22a