Preliminary Release 1.2 W High Efficiency Power Amplifier 800 - 960 MHz AM52-0001 V1.00 Features • • • • • SOIC-8P SOIC-8 Thermally Efficient Plastic Package +30.8 dBm Typical Power Out Greater than 50% Typical Power Added Efficiency 21 dB typical Power Gain Flexible External Output Matching .2284/.2440 (5.80/6.20) .010(.25)M B M .1497/.1574 (3.80/4.00) -B- Description M/A-COM’s AM52-0001 is a GaAs power amplifier in a thermally efficient low cost SOIC-8 plastic package. The AM52-0001 is designed for high efficiency 1.2 W output power and 21 dB of associated gain in the 800-960 MHz frequency band. The AM52-0001 is unconditionally stable in both small and large signal operation. It features flexible biasing for improved dynamic range and off-chip matching for improved efficiency and flexibility. The AM52-0001 is specifically designed for high efficiency final output power amplification in FM, GFSK and FSK type systems, such as AMPS, ETACS, NTACS, CT1, CDPD and ISM. M/A-COM's AM52-0001 is fabricated using a mature 0.5 micron gate length GaAs MESFET power process. The process features full passivation for increased performance and reliability. The AM52-0001 can be used with standard automated SMT assembly equipment (See M/A-COM application note M558). .1890/.1968 (4.80/5.00) -A- CHAMFER .0532/.0688 (1.35/1.75) -C- .004 (.10) .050 (1.27) .013/.020 (8 PL) (.33/.51) .010 (.25) M C A M B S Ordering Information Part Number Package AM52-0001 SOIC-8 Lead Plastic AM52-0001TR Forward Tape and Reel * AM52-0001SMB Designer’s Kit * If specific reel size is required, consult factory for part number assignment. Electrical Specifications: VD1 = VD2 = 4.8V ± 5%, TA = +25°°C, Freq. = 824-849 MHz, VGG = VG2 = VG1 adjusted for 150 mA quiescent drain Current. Parameter Test Conditions Units Min. Typ. Linear Gain Pin ≤ -20 dBm dB 29 Output Power Pin = 10 dBm dBm 30.8 Power Gain dB 21 Power Added Efficiency % 55 Second Harmonic dBc -30 Third Harmonic Noise Power1 dBc -50 dBm -92 Max. Stability2 VSWR 10:1 Load Mismatch3 VSWR 10:1 mA 5 Gate Current Adjustable Power Control (APC) VD1 = 0 → 4.8V VD2 = 4.8 V dB 27 1. Noise power (30 KHz RBW), 45 MHz above TX Freq range, measured under rated output power conditions. 2. Parasitic Oscillation defined as any spurious output less than 60 dBc with respect to desired signal level. Measured with nominal Pin and an output VSWR of 10:1 any phase, VDD = 4.8 V. 3. No permanent degradation with nominal Pin and an output VSWR of 10:1 at any phase (360° rotation in 10 sec.) with VDD up to 6V. . Specifications Subject to Change Without Notice. M/A-COM Inc. North America: 1 Tel. (800) 366-2266 Fax (800) 618-8883 ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020 1.2 W High Efficiency Power Amplifier AM52-0001 V1.00 Absolute Maximum Ratings 1 Parameter Input Power Functional Block Diagram (AMPS 824-849 MHz) Absolute Maximum 2 +23 dBm Operating Voltage 2 VDD = + 10 Volts C2 C7 VGG = - 6 Volts Junction Temperature +150 °C 3 C3 1 8 T1 2 7 T2 3 6 VG1 VD2 C11 Storage Temperature -65 °C to +150 °C Operating Temperature -40 °C to +85 °C R F IN 1. Exceeding any one or combination of these limits may cause permanent damage. 2. Ambient Temperature (TA) = + 25°C 3. See temperature derating curve. C10 C9 RF OUT C8 4 5 VD1 VG2 C6 C1 C4 9 C5 External Circuitry Parts List Pin Configuration Pin No. 1 2 3 4 5 6 7 8 9 Pin Name VG1 RF IN GND VD1 VG2 GND RF OUT VD2 Puck (AMPS 824-849 MHz) Description Negative supply voltage, First stage RF Input of the amplifier DC and RF Ground Positive supply voltage, First stage Negative supply voltage, First stage DC and RF Ground RF Output of the amplifier Positive supply voltage, Second stage DC and RF Ground Recommended PCB Configuration Layout View (AMPS 824-849 MHz) Part Value Purpose C1 - C3 C4 - C7 C8 C9, C10 C11 T1 T2 220 pF 0.1 uF 8 pF 56 pF 1.0 uF 0.470” 0.250” By-Pass By-Pass Power Tuning DC Block By-Pass Matching Transmission Lines (50 Ω) 1.) The recommended layout is specifically for the AMPS application. It shows EIA code size 0603 standard SMT capacitors with the exception of C11 which is a EIA code size 3528 2.) The location of C9, C10 and C11 is not critical to the performance of the amplifier. Cross Section View RF Traces + Components RF Ground C11 C7 DC Routing C2 Customer Defined C3 0.47" (T1) C10 C6 0.25" (T2) C1 The PCB dielectric between RF traces and RF ground layers should be chosen to reduce RF discontinuities between 50 Ω lines and package pins. M/A-COM recommends an FR-4 dielectric thickness of 0.008”(0.2 mm) yielding a 50 Ω line width of 0.015”(0.38 mm). The recommended metalization thickness is 1 oz. copper and ground metalization thickness is 2 oz.. Shaded traces are vias to DC Routing layer and traces on DC Routing layer. C8 C4 Biasing Procedure C9 C5 The AM52-0001 requires that VGG bias be applied prior to ANY VDD bias. Permanent damage will occur if this procedure is not followed. All FETs in the PA will draw IDSS and damage internal circuitry. Resistance added in seiries with Vg1 and Vg2 may degrade performance. Specifications Subject to Change Without Notice. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 M/A-COM Inc. ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020 1.2 W High Efficiency Power Amplifier AM52-0001 V1.00 Typical Power Data (AMPS 824 - 849 MHz) Test Conditions (unless otherwise noted) : TRoom = +25°C, TCold = -40°C, THot = +85°C, Pin = 10 dBm, Freq. = 835 MHz, VDD = VD1 = VD2 = 4.8V and VGG = VG1 = VG2 adjusted for 150 mA total quiescent drain current. External output matching circuitry is optimized for the 824 - 849 MHz AMPS application. OUTPUT POWER VS INPUT POWER GAIN VS INPUT POWER 35 35 31 31 Room Cold Gain (dB) Pout (dBm) Cold Room 27 23 19 27 Hot 23 19 Hot 15 15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 -13 -11 13 -9 -7 -5 -3 -1 1 3 Pin (dBm) 7 9 11 13 GATE CURRENT VS INPUT POWER PAE VS INPUT POWER 0 70 Room 60 -1 50 Cold 40 IG2 (mA) Cold PAE (%) 5 Pin (dBm) Room 30 -2 Hot -3 20 -4 Hot 10 -5 0 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 -13 -11 13 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 Pin (dBm) Pin (dBm) OUTPUT POWER VS FREQUENCY DRAIN CURRENTS VS INPUT POWER 50 1000 33.5 Cold Room 800 32.5 Room 30 600 20 400 10 200 Id2 (mA) Id1 (mA) Cold Pout (dBm) 40 31.5 Hot 30.5 Hot 0 -13 -11 -9 -7 -5 -3 -1 0 1 3 5 7 9 11 13 29.5 800 810 820 830 840 850 860 870 880 890 900 Frequency (MHz) Pin (dBm) Specifications Subject to Change Without Notice. M/A-COM Inc. North America: 3 Tel. (800) 366-2266 Fax (800) 618-8883 ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020 1.2 W High Efficiency Power Amplifier AM52-0001 V1.00 Typical Power Data cont’d PAE VS FREQUENCY 70 24 68 23.5 Cold 66 23 Room Gain (dB) 64 PAE (%) GAIN VS FREQUENCY 62 60 58 22.5 Cold 22 Room 21.5 56 21 54 Hot 52 20.5 Hot 50 20 800 810 820 830 840 850 860 870 880 890 900 800 810 820 830 Frequency (MHz) OUTPUT POWER, GAIN, AND PAE VS VDD 65 Pout 33 64 31 63 29 62 860 870 880 890 900 35 30 27 61 PAE 25 60 23 59 Gain 21 Pout (dBm) 25 20 15 10 58 19 57 17 56 15 5 0 -5 55 3 3.5 4 4.5 5 Vdd (V) 5.5 6 0 6.5 2 3 4 5 6 TEMPERATURE DERATING CURVE 70 6 60 5 Dissipated Power (W) 3fo 50 40 30 2fo 20 4 3 2 1 10 0 800 1 Vd1(V) SECOND & THIRD HARMONICS VS FREQUENCY Harmonic Rejection (dBc) 850 OUTPUT CONTROL POWER PAE (%) Pout (dBm) & Gain (dB) 35 840 Frequency (MHz) 0 820 840 860 880 900 920 940 960 0 25 Frequency (MHz) 50 75 100 125 Ambient Temperature (C) 150 175 Note: Dissipated power in the above curve refers to power dissipated in output FET and is defined as (Pdiss=Vdd*Id2-Pout). Typical Thermal Resistance (θjc) = 25°C/W. Specifications Subject to Change Without Notice. 4 North America: Tel. (800) 366-2266 Fax (800) 618-8883 M/A-COM Inc. ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020 1.2 W High Efficiency Power Amplifier AM52-0001 V1.00 Designer’s Kit AM52-0001SMB the recommended PCB layout) and any additional Application Notes. The AM52-0001SMB evaluation PCB is illustrated below with all functional ports labeled. The AM52-0001SMB Designer's Kit allows for immediate evaluation of M/A-COM's AM52-0001. The evaluation board consists of an AM52-0001, recommended external surface mount circuitry, RF connectors, and a DC multi-pin connector, all mounted to a multi-layer FR-4 PCB. Other items included in the Designer's Kit, a floppy disk (with typical performance data and a DXF file of AMPLIFIER PCB DC Connector Pinout PCB DC Function Connector 1 GND Device Pin PCB DC Number Connector 6 & 9 (Puck) 11 2 12 3 13 4 14 5 6 Device Pin Number VD2 8 VG1 1 GND 6 & 9 (Puck) 15 VG2 5 7 16 17 8 9 Function 18 VD1 4 10 19 20 Specifications Subject to Change Without Notice. M/A-COM Inc. North America: 5 Tel. (800) 366-2266 Fax (800) 618-8883 ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020 1.2 W High Efficiency Power Amplifier AM52-0001 V1.00 Designer’s Kit Biasing Procedure In order to prevent transients which may damage the MMIC, please adhere to the following procedure. Turn on all power supplies and set all voltages to 0 volts BEFORE connecting the power supplies to the DC connector. Apply a -5.0 volt supply to DC connector pin 17 (VG1) Apply a -5.0 volt supply to DC connector pin 6 (VG2) Apply a +5.0 volt supply to the DC connector pin 9 (VD1) Apply a +5.0 volt supply to the DC connector pin 14 (VD2) Adjust all VGG supplies to -5 volts Adjust all VDD supplies to +4.8 volts Adjust VGG = VG1 = VG2 supply for desired VDD quiescent current (typically 150 mA) To power off, reverse above procedure 1) 2) 3) 4) Set VD1 & VD2 to 0 volts Set VG1 & VG2 to 0 volts Disconnect bias lines from DC connector Turn off power supplies Evaluation PCB + RF Connector Losses Port Reference Loss (dB) PA IN 0.1 PA OUT 0.1 The DC connector on the Designer’s Kit PCB allows convenient DC line access. This is accomplished by one or more of the following methods: 1. A mating female multi-pin connector (Newark Electronics Stock # 46F-4658, not included) 2. Wires soldered to the necessary pins (not included) 3. Clip leads (not included) 4. A combination of clip leads or wires and jumpers (jumpers included as required). Specifications Subject to Change Without Notice. 6 North America: Tel. (800) 366-2266 Fax (800) 618-8883 M/A-COM Inc. ♦ Asia/Pacific: Tel. +81 3 3226-8761 Fax +81 3 3226-8769 ♦ Europe: Tel. +44 (1344) 869-595 Fax +44 (1344) 300 020