High Dynamic Range Low Noise Amplifier, 400 - 500 MHz Functional Block Diagram Features • • • • • • MAALSS0025 V1 Low Noise Figure: 0.9 dB High OIP3: +28 dBm at 5 V, 60 mA bias High Gain: 21 dB Single Supply: +3 to +8 VDC Low Cost SOIC-8 Plastic Package Adjustable current: 20 to 80 mA with external resistor GND GND REXT VDD Description RF IN RF OUT M/A-COM’s MAALSS0025 is a high dynamic range, low noise GaAs MMIC amplifier in a low cost, surface mount package. It employs external input matching to obtain optimum noise figure performance and operating frequency flexibility. GND GND The MAALSS0025 also features flexible biasing to control the current consumption vs. dynamic range trade-off. The MAALSS0025 can operate from any supply voltage in the 3 V to 8 V range. Its current can be controlled over a range of 20 mA to 80 mA with an external resistor. The MAALSS0025 is ideally suited for use where low noise figure, high gain, high dynamic range, and low power consumption are required. Typical applications include receiver front ends in CDMA450 base stations. It is also useful as a gain block, buffer, driver, and IF amplifier in both fixed and portable cellular and 450 MHz ISM systems. The MAALSS0025 is fabricated using a low-cost 0.5-micron gate length GaAs process. The process features full passivation for increased performance reliability. Pin Configuration Pin No. Pin Name Description 1 GND RF and DC Ground 2 REXT External Current Control (optional) 3 RF IN RF Input 4 GND RF and DC Ground 5 GND RF and DC Ground 6 RF OUT RF Output 7 VDD Positive supply voltage 8 GND RF and DC Ground Absolute Maximum Ratings 1 Parameter Absolute Maximum VDD +10 VDC Input Power 2 Ordering Information Part Number Package MAALSS0025 Bulk Packaging MAALSS0025TR 1000 piece reel MAALSS0025SMB Sample Test Board +10 dBm Current 120 mA Channel Temperature3 +150°C Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C 1. Exceeding any one or combination of these limits may cause permanent damage to this device. 2. When pin #2 is used to increase current (see note 5). 3. Thermal resistance (θjc) = +88°C/W. Note: Reference Application Note M513 for reel size information. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. High Dynamic Range Low Noise Amplifier, 400 - 500 MHz MAALSS0025 V1 Electrical Specifications: TA = +25°C, Z0 = 50 Ohms, F = 450 MHz, Pin = -30 dBm Parameter Test Conditions Units Min Typ Max 5 V, 60 mA 4 dB 19 21 24 Noise Figure 5 V, 60 mA 4 dB — 0.9 1.4 Input Return Loss — dB — 9 — Output Return Loss — Gain dB — 11 — Output 1 dB Compression 5 V, 60 mA 4 dBm — 16.5 — Output IP3 5 V, 60 mA4 dBm — 28 — 4 dBm 3 7 — dB — 34 — Input IP3 5 V, 60 mA Reverse Isolation — 4. Using external 15-ohm resistor. See functional schematic. External Circuitry Parts List Functional Schematic VDD L3 C3 IN L2 C1 C4 7 3 OUT 6 1,4,5,8 2 L1 C2 Part Value Purpose C1 100 pF DC Block C2 8 pF Input Matching C3 470 pF Bypass C4 4 pF Output Matching L1 22 nH Input Matching L2 43 nH Input Matching L3 12 nH RF Choke L4 11 nH Output Matching R1 15 Ohms Optional current control (see note 5) L4 R1 (See note 5) Handling Procedures The following precautions should be observed to avoid damage: 5. Pin 2 allows use of an external resistor to ground for optional, higher current. For 20 mA operation, no resistor is used. For IDD ~ 40 mA, R2 = 43 ohms; IDD ~ 60 mA, R2 = 15 ohms; IDD ~ 80 mA, R2 = 10 ohms. Static Sensitivity Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. High Dynamic Range Low Noise Amplifier, 400 - 500 MHz MAALSS0025 V1 Typical Performance Curves over Temperature Gain Reverse Isolation +25°C +85°C -40°C +25°C 23 S12 (dB) S21 (dB) 19 17 -20 -30 -40 -50 15 400 420 440 460 480 400 500 420 440 +25°C +85°C -40°C +25°C 0 -3 -3 -6 -6 S22 (dB) 0 -9 -12 500 +85°C -40°C -9 -12 -15 -15 420 440 460 480 400 500 420 440 Frequency (MHz) 460 480 500 Frequency (MHz) Output IP3 Noise Figure +25°C +85°C -40°C +25°C 35 1.6 30 OIP3 (dBm) 2.0 1.2 0.8 0.4 +85°C -40°C 25 20 15 0.0 400 480 Output Return Loss Input Return Loss 400 460 Frequency (MHz) Frequency (MHz) S11 (dB) -40°C -10 21 Noise Figure (dB) +85°C 0 10 420 440 460 480 500 Frequency (MHz) 3 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. 400 420 440 460 480 500 Frequency (MHz) • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. High Dynamic Range Low Noise Amplifier, 400 - 500 MHz MAALSS0025 V1 SO-8 Recommended PCB Configuration Cross Section View RF Traces & Components RF Ground DC Routing Customer Defined The PCB dielectric between RF traces and RF ground layers should be chosen to reduce RF discontinuities between 50-ohm lines and package pins. M/A-COM recommends an FR-4 dielectric thickness of 0.008” (0.20 mm) yielding a 50-ohm line width of 0.015” (0.38 mm). The recommended RF metalization thickness is 1 ounce copper. 4 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.