19-1094; Rev 0; 6/96 KIT ATION EVALU BLE A IL A V A DC-to-Microwave, Low-Noise Amplifier ____________________________Features ♦ Single +5V Supply Operation ________________________Applications ________________Ordering Information Satellite Receivers ♦ 3dB Bandwidth: DC to 1100MHz ♦ High Gain: 18dB at 500MHz ♦ Low Noise Figure: 3.5dB at 500MHz ♦ High Drive Capability: +3dBm at 16mA ID ♦ Ultra-Small SOT143 Package PART TV Tuners MAX2611EUS TEMP. RANGE PIN-PACKAGE -40°C to +85°C 4 SOT143 Wireless Local Loops ISM Radios Global Positioning Systems Wireless Local-Area Networks Land Mobile Radios Set-Top Boxes __________Typical Operating Circuit VCC CBYP (OPTIONAL) __________________Pin Configuration TOP VIEW RBIAS LCHOKE OUT 4 GND 3 (OPTIONAL) OUT OUT MAX2611 GND CBLOCK GND GND IN MAX2611 IN 2 1 IN SOT143 CBLOCK ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 MAX2611 _______________General Description The MAX2611 is a low-voltage, low-noise amplifier for use from DC to microwave frequencies. Operating from a single +5V supply, it has a 3dB bandwidth of 1100MHz. The MAX2611’s low noise figure and high drive capability make it ideal for a variety of transmit, receive, and buffer applications. In a typical application, the only external components needed are input and output blocking capacitors and a V CC series resistor. To improve gain and output power, an RF choke can be added in series to the bias resistor. The MAX2611 comes in a 4-pin SOT143 package, requiring minimal board space. MAX2611 DC-to-Microwave, Low-Noise Amplifier ABSOLUTE MAXIMUM RATINGS ID .........................................................................................40mA Input Power ....................................................................+13dBm Continuous Power Dissipation (TA = +70°C) SOT143-4 (derate 4mW/°C above +70°C)..................320mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (ID = 16mA, Z0 = 50Ω, fIN = 500MHz, TA = +25°C, unless otherwise noted.) PARAMETER CONDITIONS Operating Temperature Range (Note 1) Power Gain fIN = 100MHz fIN = 500MHz Gain Flatness fIN = 100MHz to 500MHz MIN TYP -40 17.3 3dB Bandwidth MAX UNITS 85 °C 19.0 18.3 dB ±0.3 dB 1100 MHz Input Voltage Standing-Wave Maximum Ratio fIN = 100MHz to 1500MHz 1.9:1 Output Voltage Standing-Wave Maximum Ratio fIN = 100MHz to 1500MHz 1.6:1 Output 1dB Compression Point 2.9 Noise Figure 3.5 dB Output IP3 13 dBm Group Delay Device Voltage Device Voltage Temperature Coefficient dBm 210 TA = TMIN to TMAX (Note 2) ps 3.5 3.8 4.0 3.25 3.8 4.26 -6.1 V mV/°C Note 1: Parts are designed to operate over specified temperature range. Specifications are production tested and guaranteed at +25°C. Note 2: Guaranteed by design, not tested. 2 _______________________________________________________________________________________ DC-to-Microwave, Low-Noise Amplifier VOLTAGE STANDING-WAVE RATIO vs. FREQUENCY TA = +85°C TA = +25°C 4 20 VSWR TA = +85°C 3:1 10 2:1 5 OUT 1:1 0.05 0.10 0.30 0.50 1.00 0.05 0.10 3.00 6.00 0.30 0.50 1.00 0 0.1 3.00 6.00 1.0 2.0 FREQUENCY (GHz) NOISE FIGURE vs. FREQUENCY GAIN vs. CURRENT 25 MAX2611-04 7 0.3 0.4 0.5 0.2 FREQUENCY (GHz) FREQUENCY (GHz) 0.16GHz 6 20 GAIN (dB) NOISE FIGURE (dB) TA = -40°C 2 1 IN 0 3 MAX2611-05 15 P-1 (dBm) 4:1 TA = -40°C GAIN (dB) 5 MAX2611-02 5:1 MAX2611-01 25 OUTPUT 1dB COMPRESSION POINT vs. FREQUENCY MAX2611-03 GAIN vs. FREQUENCY 5 TA = +85°C 4 TA = +25°C 0.5GHz 15 1.0GHz 10 2.0GHz TA = -40°C 3 5 2 0 0.1 0.2 0.3 0.4 0.5 FREQUENCY (GHz) 1.0 2.0 10 15 20 25 30 35 ID(mA) _______________________________________________________________________________________ 3 MAX2611 __________________________________________Typical Operating Characteristics (ID = 16mA, Z0 = 50Ω, fIN = 500MHz, TA = +25°C, unless otherwise noted.) MAX2611 DC-to-Microwave, Low-Noise Amplifier ______________________________________________________________Pin Description PIN NAME FUNCTION 1 IN Amplifier Input. Use a series blocking capacitor with less than 3Ω reactance at your lowest operating frequency. 2, 4 GND Ground Connection. For optimum performance, provide a low-inductance connection to the ground plane. 3 OUT Amplifier Output. Use a series blocking capacitor with less than 3Ω reactance at your lowest operating frequency. Bias with an external resistor and an optional RF choke. Table 1. Typical Scattering Parameters (ID = 16mA, Z0 = 50Ω, TA = +25°C) FREQUENCY (GHz) S11 (mag) S11 (ang) S21 (dB) S21 (mag) S21 (ang) S12 (dB) S12 (mag) S12 (ang) S22 (mag) S22 (ang) K 0.1 0.12 -11 19.0 8.90 173 -22.6 0.074 2 0.05 53 1.08 0.2 0.11 -44 18.8 8.73 166 -21.9 0.081 4 0.03 12 1.06 0.3 0.13 -58 18.6 8.53 158 -21.6 0.083 5 0.04 45 1.05 0.4 0.14 -78 18.5 8.43 151 -21.6 0.083 6 0.06 32 1.06 0.5 0.15 -89 18.3 8.26 144 -21.6 0.083 7 0.08 34 1.06 0.6 0.15 77 18.1 7.99 137 -21.6 0.083 9 0.09 26 1.07 0.8 0.13 50 17.4 7.45 123 -21.6 0.083 10 0.10 23 1.10 1.0 0.12 16 16.6 6.79 109 -20.9 0.090 10 0.10 35 1.11 1.5 0.32 -60 14.1 5.07 79 -21.8 0.081 11 0.21 -86 1.29 2.0 0.31 -72 10.3 3.27 59 -22.2 0.078 18 0.22 -72 1.87 2.5 0.32 -76 7.9 2.48 47 -22.6 0.074 25 0.26 -53 2.44 3.0 0.20 -70 5.9 1.98 32 -22.3 0.077 37 0.24 -29 3.10 3.5 0.24 -64 3.0 1.41 13 -21.4 0.086 30 0.19 47 3.83 4.0 0.31 -68 -0.7 0.92 17 -23.0 0.070 35 0.24 82 6.66 4 _______________________________________________________________________________________ DC-to-Microwave, Low-Noise Amplifier The MAX2611 is a broadband amplifier with flat gain and 50Ω input and output ports. Its small size and simple bias circuitry make it ideal for applications where board space is limited. __________Applications Information Grounding Proper grounding of the GND pins is essential. If the PC board uses a topside RF ground, the GND pins should be connected directly to it. For a board where the ground plane is not on the component side, the best technique is to connect the GND pins to it through multiple plated through-holes. External Components PC Board Layout Example As shown in the Typical Operating Circuit , the MAX2611 is easy to use. Input and output series capacitors may be necessary to block DC bias voltages (generated by the MAX2611) from interacting with adjacent circuitry. These capacitors must be large enough to contribute negligible reactance in a 50Ω system at the minimum operating frequency. Use the following equation to calculate their minimum value: An example PC board layout is given in Figure 1. It uses FR-4 with 31mil layer thickness between the RF lines and the ground plane. This board satisfies all the above requirements. CBLOCK = 53,000 (pF) f where f (in MHz) is the minimum operating frequency. Bias current is supplied to the MAX2611 through an external resistor and optional RF choke connected between VCC and the OUT pin. A bypass capacitor from VCC to GND may be necessary to isolate the VCC line from other circuitry. The resistor value determines the bias current from the following equation: ID = VCC - VD RBIAS where VD is the device voltage, nominally 3.8V. An optional RF choke can be added to improve the MAX2611’s gain and output power. The choke should be large enough to reduce the loading effect that the bias resistor has on the amplifier output. This is a function of R BIAS , frequency of operation, and output impedance. EXPANDED VIEW Figure 1. Example PC Board Layout _______________________________________________________________________________________ 5 MAX2611 _______________Detailed Description MAX2611 DC-to-Microwave, Low-Noise Amplifier __________________________________________________Tape-and-Reel Information 4.0 ±0.1 1.0 ±0.1 1.75 ±0.1 2.0 ±0.05 1.5 +0.1/-0.0 DIAMETER A 3.5 ±0.05 8.0 ±0.3 2.2 ±0.1 0.5 RADIUS TYPICAL A0 4.0 ±0.1 MARKING INFORMATION † LOT SPECIFIC CODE XX XX 1.0 MINIMUM A Bo Ko 0.30 ±0.05 0.8 ±0.05 Ao = 3.1mm ±0.1 Bo = 2.7mm ±0.1 Ko = 1.2mm ±0.1 DF = MAX2611 NOTE: DIMENSIONS ARE IN MM. AND FOLLOW EIA481-1 STANDARD. 0.30R MAX. † ICs MAY ALSO BE MARKED WITH FULL PART NAME: 2611 ________________________________________________________Package Information DIM D 0°-8° A C I A1 e1 B A A1 B B1 C D E e e1 H I INCHES MIN MAX 0.031 0.001 0.014 0.030 0.0034 0.105 0.047 0.070 0.071 0.082 0.004 0.047 0.005 0.022 0.038 0.006 0.120 0.055 0.080 0.079 0.098 0.012 MILLIMETERS MIN MAX 0.787 0.025 0.356 0.762 0.086 2.667 1.194 1.778 1.803 2.083 0.102 1.194 0.127 0.559 0.965 0.152 3.048 1.397 2.032 2.007 2.489 0.305 21-0052A E H 4-PIN SOT143 SMALL-OUTLINE TRANSISTOR PACKAGE B1 e Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 6 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.