RF2125P

RF2125P RFMD | Alldatasheet

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Functional Block Diagram RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA T el (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Optimum Technology Matching® Applied Si BJT GaAs MESFETGaAs HBT Si Bi-CMOS SiGe HBT Si CMOS RF IN RF IN PC VCC RF OUT RF OUT RF OUT RF OUT BIAS CIRCUIT PACKAGE BASE GND RF2125P HIGH POWER LINEAR AMPLIFIER

• PCS Communication Systems  Digital Communication Systems  DECT Cordless Applications  Commercial and Consumer Systems  Portable Battery-Powered Equipment The RF2125P is a high power, high efficiency linear a m p l i f i e rI C .T h ed e v i c ei sm a n u f a c t u r e do na na d v a n c e d Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process and has been designed for use as the final RF amplifier in digital PCS phone transmitters and base sta- tions requiring linear amplification operating between 1500MHz and 2200MHz. It will also function as a high efficiency amplifier for constant envelope applications such as DECT . The device is packaged in an 8-lead plas- tic package with a backside ground. The device is self- contained with the exception of the output matching net- work and power supply feed line. It produces a typical output power level of 1W.  Single 2.7V to 7.5V Supply  1W Output Power 1 4 d BG a i n  45% Efficiency  Power Down Mode  1500MHz to 2200MHz Operation RF2125P High Power Linear Amplifier RF2125P PCBA Fully Assembled Evaluation Board Rev A4 010720 3.90 ±0 . 1 0 6.00 ±0 . 2 0 4.90 ±0 . 1 0 0.43 ±0 . 0 5 1.27 1.40 ±0 . 1 0 0.05 ±0 . 0 5 -A- Exposed Heat Sink 2.70 ±0 . 1 0 0.22 ±0 . 0 3 0.60 ±0 . 1 5 8° MAX 0° MIN 1.70 ±0 . 1 0Dimensions in mm. NOTES: 1. Shaded lead is pin 1. 2. Lead coplanarity - 0.10 with respect to datum "A". Package Style: SOIC-8 Slug

Supply Voltage (VCC ) -0.5 to +7.5 V DC Power Control Voltage (VPC ) - 0 . 5t o+ 5 V V DC Supply Current 450 mA Input RF Power +20 dBm Output Load VSWR 20:1 Operating Ambient Temperature -40 to +85 °C Storage Temperature -40 to +100 °C Parameter Specification Unit ConditionMin. Typ. Max. Overall T=25°C, VCC =6.0V , VPC =5.0V , ZLOAD =12 Ω ,Pin= 0dBm, Freq=1885MHz, Idle current=180mA Frequency Range 1500 to 2200 MHz Maximum Output Power +28.5 dBm V CC =3.6V , PIN=+17dBm Maximum Output Power +29.5 dBm V CC =4.8V , PIN=+17dBm Maximum Output Power +29.0 +30 dBm V CC =6.0V , PIN=+17dBm Total Power Added Efficiency 45 % Maximum output, V CC =3.6V Total Power Added Efficiency 45 % Maximum output, V CC =4.8V Total Power Added Efficiency 40 45 % Maximum output, V CC =6.0V Small-signal Gain 12 14 dB Second Harmonic -40 dBc Third Harmonic -45 dBc Fourth Harmonic -35 dBc Isolation 15 dB V PC =0.2V Input VSWR 1.5:1 With external matching network; see appli- cation schematic Two-tone Specification Average Two-Tone Power +27 dBm PEP-3dB IM3 -23 -30 dBc P OUT =+24dBm for each tone IM5 -35 dBc P OUT =+24dBm for each tone IM7 -45 dBc P OUT =+24dBm for each tone Power Control VPC 1.5 3.3 3.5 V To obtain 180mA idle current PC Current 1 mA V PC =2.0V 2m A V PC =3.5V Power Control “OFF” 0.2 0.5 V Threshold voltage at device input Power Supply Power Supply voltage 2.7 to 7.5 V Supply Current 200 360 500 mA P OUT =+30dBm, V CC =6.0V Power Down Current 0.5 10 µAV PC =0.2V Caution!ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). Refer to “Handling of PSOP and PSSOP Products” on page 16-15 for special handling information.

Pin Function Description Interface Schematic 1R F I N RF input. This input is DC coupled, so an external blocking capacitor is required if this pin is connected to a DC path. An optimum match to 50 Ω is obtained by providing an external series capacitor of 4.3pF and then a shunt capacitor of 3.3pF; see the application schematic. Those values are typical for 1880MHz; other values may be required for other frequencies. 2R F I N Same as pin 1. 3P C Power control pin. For obtaining maximum performance the voltage on this pin can be used to set correct bias level. In a typical application this is implemented by a feedback loop. The feedback can be based on the actual supply current of the device, i.e. maintaining a fixed current level, or it can be based on the RF output power level to maintain a fixed RF power level (Automatic Level Control loop). A voltage of 0.5V or lower brings the part into power down state. 4V C C Power supply pin for the bias circuits. External low frequency bypass capacitors should be connected if no other low frequency decoupling is nearby. 5R F O U T RF output and bias for the output stage. The power supply for the out- put transistor needs to be supplied to this pin. This can be done through a quarter wave length microstrip line that is RF grounded at the other end, or through an RF inductor that supports the required DC cur- rents. Optimum load impedance is achieved by providing a shunt capacitor of 3.0pF and a series capacitor of 3.9pF; see the application schematic. Those values are typical for 1880MHz; other values may be required for other frequencies. Since there are several output pins available, which are internally connected, one pin can be used for con- necting the bias, another for connecting a (third) harmonic trap filter, and the other pins for the RF output. 6R F O U T Same as pin 5. 7R F O U T Same as pin 5. 8R F O U T Same as pin 5. Pkg Base GND Ground connection. The backside of the package should be connected to the ground plane through a short path, i.e., vias under the device may be required.

2.4 pF 0.01µ F 3.9 pF 100 pF0.1µ F 3.6 pF RF IN RF OUT 4.3 pF VCC VPD

Evaluation Board Schematic (Download Bill of Materialsfrom www.rfmd.com.) BIAS CIRCUIT PACKAGE BASE L1 33 nH See Chart 1n F See Chart 100 pF µ F See Chart P1-3 P1-1 See Chart 1n F 100 nF RF OUTRF IN Broadband and Unlicensed PCS (1910 to 1970 MHz) Capacitors are ATC type. The 2.7 pF capacitor is 2.4 pF in parallel with 0.3 pF. DCS1800 (1710 to 1785 MHz) Broadband and Unlicensed PCS (1850 to 1910 MHz) DECT (1880 to 1990 MHz) APPLICATION C1 (pF) C4 (pF) C3 (pF)C2 (pF) 3.3 7.5 3.6 3.9 3.0 3.9 2.7 3.6 3.6 4.3 2.4 3.9 3.0 3.9 2.7 3.6 P1-1 P1-3 PC GND VCC1

2125402 Rev -

50 Ω 50 Ω

1.0” x 1.5” Board Thickness 0.031”; Board Material FR-4