SKY Preliminary Data Sheet

Transcription

1 SKY Preliminary Data Sheet MHz; Ultra Wideband Variable Gain Amplifier Description Skyworks SKY65142 is an ultra-wideband Variable Gain Amplifier (VGA) in a small footprint module. The module contains a Variable Voltage Attenuator with Gain control range of over 20 db. The device is internally matched for 50 Ohms on all RF ports. The VGA maintains very linear performance over a wide frequency bandwidth with P1dB greater than 27 dbm, and OIP3 greater than 35 dbm. ESD Sensitivity The SKY65142 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions. Electrical and Mechanical Specifications The signal pin assignments and functions are described in Table 1. The absolute maximum ratings for the SKY65142 are provided in Table 2. The recommended operating conditions for the SKY65142 are specified in Table 3. The remaining tables and figures illustrate the device performance at various operating bands. Features Wideband Frequency Operation: 100 MHz 1000 MHz. Gain Control Range: 20 db Gain at Zero Attenuation: 20 db Linear Output Power > +27 dbm Output IP3 > 35 dbm Single DC Supply: +5V Low Power Consumption, PAE > 40% Low Cost Lead Free SMT Package Applications AMPS / PCS / DCS / GSM / EDGE / GPRS VHF / UHF TV / Tetra Base Stations Repeaters Figure 1. SKY65142 Pinout 8x8mm MCM Package Figure 2. SKY65142 Functional Block Diagram SKY65142 Data Sheet

2 <SKY65142> <Wideband Linear Variable Gain Amplifier > Table 1. SKY65142 Pin Out Description Pin Number Name Description 1 GND Ground 2 RFin RF Input 3 GND Ground 4 Bias Amplifier Bias Voltage 5 Vref Reference Voltage 6 Vcc Collector Supply Voltage 7 GND Ground 8 RFout RF Output 9 GND Ground 10 GND Ground 11 Vcnt Gain Control Voltage 12 V_Att Attenuator Circuit Bias Voltage Table 2. SKY65142 Absolute Maximum Ratings Parameter Symbol Min. Typical Max. Units RF Output power Pout +29 dbm Supply voltages Vcc, Bias, Vref, Vcnt, V_Att 5.5 V Power dissipation P D 2000 mw Case Operating temperature Tc o C Storage temperature Tst Junction temperature Tj +150 o C o C Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device if only one parameter is set at the limit and all other parameters set at or below their nominal conditions. Table 3. SKY65142 Recommended Operating Conditions Parameter Symbol Min Typical Max Units Supply voltages Vcc, Bias, Vref, V_Att V Gain Control voltage Vcnt V Frequency Range F MHz 2 SKY65142

3 Table 4. SKY65142 Electrical Characteristics ( Vcc = Vref = V_Att = Bias = 5 V, Vcnt = 0V, Tc = +25 o C, unless otherwise noted) Parameter Symbol Test Condition Min Typical Max Units Test Frequency = 150 MHz Gain at minimum Attenuation Gmax CW 24 db Gain Control Range Grange CW 23 db Output Power at 1 db P1dB CW 29 dbm PAE at P1dB PAE CW 50 % Output 3 rd. Order Intercept Point OIP3 2 tones, 5 dbm/ Output Tone, 1 MHz separation 36 dbm Test Frequency = 450 MHz Gain at minimum Attenuation Gmax CW 23 db Gain Control Range Grange CW 20 db Output Power at 1 db P1dB CW 27 dbm PAE at P1dB PAE CW 40 % Output 3 rd. Order Intercept Point OIP3 2 tones, 5 dbm/ Output Tone, 1 MHz separation 36 dbm Test Frequency = 905 MHz Gain at minimum Attenuation Gmax CW 21 db Gain Control Range Grange CW 20 db Output Power at 1 db P1dB CW 27 dbm PAE at P1dB PAE CW 45 % Output 3 rd. Order Intercept Point OIP3 2 tones, 5 dbm/ Output Tone, 1 MHz separation 37 dbm SKY August 17, 2006 Proprietary Information and Specifications Are Subject to Change

4 Gain (db) vs. Frequency Gain (db) Frequency (MHz) Figure 3. Gain (Minimum Attenuation) vs. Frequency SKY65142 Gain vs. Vcon over Frequency 30 Gain(dB) MHz 453MHz 908MHz Vcon(V) Figure 4. Gain vs. Vcon vs. Frequency 4 Skyworks Preliminary SKY65142

5 Output P1dB vs. Frequency 30 Output P1dB (dbm) Frequency (MHz) Figure 5. Output P1dB vs Frequency. PAE vs. Frequency PAE (%) Frequency (MHz) Figure 6. Power Added Efficiency (PAE) vs. Frequency SKY August 17, 2006 Proprietary Information and Specifications Are Subject to Change

6 42 40 OIP3 vs. Attenuation 156MHz 450MHz 905MHz OIP3 (dbm) Attenuation level (db) Figure 7. Typical OIP3 vs. Attenuation Value vs. Frequency. 6 Skyworks Preliminary SKY65142

7 Evaluation Board Description Skyworks SKY65142 Evaluation Board is used to test the performance of the VGA. The Evaluation Board schematic diagram is shown in Figure 8. The schematic shows the basic design of the board for the 100 to 1000 MHz range. An assembly drawing for the Evaluation Board is shown in Figure 9. Circuit Design Considerations The following design considerations are general in nature and must be followed regardless of final use or configuration 1. Paths to ground should be made as short as possible. 2. The ground pad at the bottom of the module has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Since the circuit board acts as the heat sink, it must shunt as much heat as possible from the module. As such, design the connection to the ground pad to dissipate the maximum wattage produced by the module to the circuit board. Multiple vias to the grounding layer are required. 3. Bypass capacitors should be used on the DC supply lines. RF inductor is required on the Vcc supply line to block RF signal from the DC supply. See Evaluation Board schematic drawing for more details. 4. The RF lines should be well separated from each other, with solid ground in between traces, to maximize input-to-output isolation. Testing Procedure Use the following procedure to set up the SKY65142 Evaluation Board for testing. 1. Connect +5.0 V DC supply voltages to Bias, and Vref. If available, enable the current limiting function of these power supplies to 0.1 A. 2. Connect a +5.0 V to the Attenuators supply voltages, V_Att and Vcnt. If available, enable the current limiting function of the power supply to 0.05 A. 3. Connect a +5.0 V to the Amplifier supply voltage, Vcc. If available, enable the current limiting function of the power supply to 0.5 A. 4. Connect signal generator(s) to the required RF input port. Set the desired RF signal frequency. Set RF power level to 8 dbm or less to the Evaluation Board but do NOT enable the RF signal. 5. Set the required Attenuation by adjusting the voltage level on Vcnt supply lines. 6. Enable the RF signal. 7. Take measurements. CAUTION: If the input signal exceeds the rated power, the SKY65142 Evaluation Board can be permanently damaged. SKY August 17, 2006 Proprietary Information and Specifications Are Subject to Change

8 V_Att Vcnt 1 J GND 12 V_ATT 11 V_CTRL J1 SMA 2 RFIN SP00-D311_m4 RFOUT 8 J2 SMA BIAS REF VCC L1 68 nh C8 C7 C9 DNI C11 DNI C pf C uF C14 DNI C uF C15 1 uf BIAS VREF DNI 1uF VCC Figure 8. Evaluation Board Schematic. Skyworks Preliminary 8 SKY65142

9 Figure 9. Evaluation Board Drawing. SKY August 17, 2006 Proprietary Information and Specifications Are Subject to Change

10 Figure 10. SKY65142 Package Details. 10 Skyworks Preliminary SKY65142

11 Ordering Information Model Name Ordering Part Number Evaluation Kit Part Number SKY65142, MHz VGA SKY65142 TW13-D SKY August 17, 2006 Proprietary Information and Specifications Are Subject to Change

12 Copyright 2006, Skyworks Solutions, Inc. All Rights Reserved Information in this document is provided in connection with Skyworks Solutions, Inc. ( Skyworks ) products. These materials are provided by Skyworks as a service to its cusomters and may be used for informational purposes only. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its products, specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from future changes to its products and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as may be provided in Skyworks Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATED TO SALES AND/OR USE OF SKYWORKS TM PRODUCTS INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSES, MERCHANTIBILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF PATENT, COPYRIGHT OR INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS, SKYWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOSS OF REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS. Skyworks TM products are not intended for medical, lifesaving or life-sustaining applications. Skyworks customers using or selling Skyworks TM products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. The following are trademarks of Skyworks Solutions, Inc.: Skyworks TM, the Skyworks symbol, Breakthrough Simplicity TM. Product names or sevices listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. Additional information, posted at is incorporated by reference. 12 Skyworks Preliminary SKY65142