SKY14151-350LF-EVB

DATA SHEET SKY14151-350LF: 20 MHz-2.5 GHz High Power SP4T Switch With Decoder Applications  GSM/WCDMA/EDGE datacards and handsets  Mobile high power switching systems RF1 RF2 ANT RF3 Features  Broadband frequency range: 20 MHz to 2.5 GHz  Low insertion loss: 0.40 dB @ 1 GHz, 0.45 dB @ 2 GHz with high isolation (29 dB @ 1 GHz)  VDD: 2.5 to 3.0 V for high power applications; can be used down to 1.8 V for low power applications  High linearity IMD < –111 dBm over phase  Good harmonic performance < –80 dBc @ 0.9 GHz  Low voltage logic compatible (minimum VHIGH = 1.8 V)  Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260 C per JEDEC J-STD-020) RF4 CTRL1 CTRL2 S1947 Figure 1. SKY14151-350LF Block Diagram Description The SKY14151-350LF is a symmetrical, single-pole, four-throw (SP4T) switch. The device is designed for broadband, high power switching applications that demand high linearity and low insertion loss. This is a general purpose switch optimized for a variety of multimode applications such as GSM/WCDMA/EDGE. The switch is manufactured using Skyworks state-of-the-art pHEMT process. The SKY14151-350LF features integrated logic that uses only two control lines for switch operation. The low current consumption makes the device suitable for batteryoperated applications. N/C RF2 GND RF1 The SKY14151-350LF SP4T switch is provided in a compact Quad Flat No-Lead (QFN) 3 x 3 mm package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. 16 15 14 13 VDD 2 11 ANT CTRL2 3 10 GND CTRL1 4 9 GND 5 6 7 8 RF3 GND GND 12 RF4 1 GND GND S1948 Figure 2. SKY14151-350LF Pinout – 16-Pin QFN (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200983H • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2010 1 DATA SHEET • SKY14151-350LF SP4T SWITCH Table 1. SKY14151-350LF Signal Descriptions Pin # Name Description Pin # Name Description 1 GND Ground 9 GND Ground 2 VDD Supply voltage input. The voltage may be switched. The switching time must be no longer than the start-up time. 10 GND Ground 3 CTRL2 Control signal 2. The logic level applied to this pin, along with the logic level applied to pin 4, controls the state of the switch. 11 ANT Antenna. This pin is connected directly and exclusively to pin 6, 8, 13, or 15 depending on the control voltage applied to pins 3 and 4. A DC blocking capacitor is required. 4 CTRL1 Control signal 1. The logic level applied to this pin, along with the logic level applied to pin 3, controls the state of the switch. 12 GND Ground 5 GND Ground 13 RF1 RF output 1. This pin is either connected directly to or is disconnected from pin 11, depending on the control voltage applied to pins 3 and 4. A DC blocking capacitor is required. 6 RF4 RF output 4. This pin is either connected directly to or is disconnected from pin 11, depending on the control voltage applied to pins 3 and 4. A DC blocking capacitor is required. 14 GND Ground 7 GND Ground 15 RF2 RF output 2. This pin is either connected directly to or is disconnected from pin 11, depending on the control voltage applied to pins 3 and 4. A DC blocking capacitor is required. 8 RF3 RF output 3. This pin is either connected directly to or is disconnected from pin 11, depending on the control voltage applied to pins 3 and 4. A DC blocking capacitor is required. 16 N/C No connection. Table 2. SKY14151-350LF Absolute Maximum Ratings Maximum Units Supply voltage Parameter VDD Symbol Minimum 3 V Input power (20 MHz to 2.5 GHz, VDD = 2.5 to 3.0 V) PIN +36 dBm Control voltage CTRL1, CTRL2 3 V Operating temperature TOP –40 +85 C Storage temperature TSTG –50 +100 C Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200983H DATA SHEET • SKY14151-350LF SP4T SWITCH Functional Description The SKY14151-350LF is comprised of a CMOS decoder that enables two TTL-compatible DC lines to control four RF ports. The decoder is internally connected to a GaAs pHEMT RF switch. Depending on the logic voltage level applied to the control pins, the ANT pin is connected to one of four switched RF outputs (RF1, RF2, RF3, or RF4) by a low insertion loss path, while maintaining a high isolation path to the alternate port. When VDD is not applied, the device is considered off or inactive. All arms of the switch remain on in this state, creating a poor four-way power splitter. The return loss of all RF ports is very low in this state. RF should not be applied when VDD is not present and should only be used to conserve current. Electrical and Mechanical Specifications Startup time is defined as the time from when VDD is applied to when the switch is active. Once the startup time has passed, the control voltages CTRL1 and CTRL2 can be applied. RF power should not be applied during the startup time or damage to the device could result. The absolute maximum ratings of the SKY14151-350LF are provided in Table 2. Electrical specifications are provided in Table 3. The recommended startup sequence is: Typical performance characteristics of the SKY14151-350LF are illustrated in Figures 3 through 10. Step 1: Apply VDD. The state of the SKY14151-350LF is determined by the logic provided in Table 4. Figure 11 illustrates the test setup used to measure data for 3rd Order Intermodulation Distortion (IMD3) testing. Figure 12 illustrates the test setup used to measure triple beat ratio data. Step 2: Apply CTRL1 and CTRL2 Step 3: Apply RF input. The device must be turned off in the reverse order. Table 3. SKY14151-350LF Electrical Specifications (1 of 3) (Note 1) (VDD = 2.65 V, CTRL1 = CTRL2 = VDD, TOP = +25 C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units 0.40 0.45 0.50 0.50 0.60 0.60 dB dB dB RF Specifications Insertion loss IL 0.02 to 1.0 GHz 1.0 to 2.0 GHz 2.0 to 2.1 GHz Isolation ISO 0.02 to 1.0 GHz 1.0 to 2.0 GHz 2.0 to 2.1 GHz Return loss |S11| 0.02 to 2.5 GHz, all RF ports, insertion loss state Second harmonic 2fo fFUND = 900 MHz, PIN = +34.5 dBm Third harmonic 3fo 29 24 23 dB dB dB 15 dB –75 –80 dBc fFUND = 0.12 GHz, PIN = +10 dBm –75 –80 dBc fFUND = 0.4 GHz, PIN = +10 dBm –80 –90 dBc fFUND = 1.8 GHz, PIN = +31.5 dBm –70 –85 dBc fFUND = 900 MHz, PIN = +34.5 dBm –70 –80 dBc fFUND = 0.12 GHz, PIN = +10 dBm –80 –90 dBc fFUND = 0.4 GHz, PIN = +10 dBm –80 –90 dBc fFUND = 1.8 GHz, PIN = +31.5 dBm –70 –80 dBc 26 19 19 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200983H • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2010 3 DATA SHEET • SKY14151-350LF SP4T SWITCH Table 3. SKY14151-350LF Electrical Specifications (2 of 3) (Note 1) (VDD = 2.65 V, CTRL1 = CTRL2 = VDD, TOP = +25 C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units +37.0 +34.0 +38.5 +38.0 +35.0 dBm dBm dBm fFUND = 1.95 GHz @ +20 dBm, fBLK = 1.76 GHz @ –15 dBm, fRX = 2.14 GHz, worst case over phase. See Figure 9. –111 dBm @ 900 MHz, VSWR = 20:1 @ 1.8 GHz, VSWR = 20:1 +34.5 +31.5 dBm dBm f0 = 836.61 MHz @ +26 dBm, f2 = 1718.22 MHz @ –20 dBm, measured @ 881.61 MHz +113.5 dBm RF Specifications (continued) Input 0.1 dB compression point 3rd Order Intermodulation Distortion P0.1dB IMD3 Power handling under mismatch 2nd Order Input Intercept Point IIP2 @ 48 MHz @ 900 MHz @ 1.8 GHz Switching speed 10/90% RF rise/fall time 5 μs Startup time Wait time required from when VDD is applied until control voltage can be applied 25 μs Triple beat ratio (matched) 3BR f1 = 1880 MHz, P1 = +21.5 dBm, f2 = 1881 MHz, P2 = +21.5 dBm, fJAMMER = 1960 MHz, PJAMMER = –30 dBm, measured @ 1959 MHz and 1961 MHz for worst case, 50 Ω load +81 +82 dBc f1 = 891.025 MHz @ +14 dBm, f2 = 892.025 MHz, P2 = +14 dBm, fJAMMER = 836.0125 MHz, PJAMMER = –30 dBm, measured @ 835.0125 MHz and 837.0125 MHz for worst case, 50 Ω load +81 +82 dBc f1 = 825.995 MHz, P1 = +21.5 dBm, f2 = 826.995 MHz, P2 = +21.5 dBm, fJAMMER = 870.995 MHz, PJAMMER = –30 dBm, measured @ 869.995 MHz and 871.995 MHz for worst case, 50 Ω load +81 +82 dBc Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200983H DATA SHEET • SKY14151-350LF SP4T SWITCH Table 3. SKY14151-350LF Electrical Specifications (3 of 3) (Note 1) (VDD = 2.65 V, CTRL1 = CTRL2 = VDD, TOP = +25 C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units f1 = 1880 MHz, P1 = +21.5 dBm, f2 = 1881 MHz, P2 = +21.5 dBm, fJAMMER = 1960 MHz, PJAMMER = –30 dBm, measured @ 1959 MHz and 1961 MHz for worst case over phase, 2:1 VSWR load +81 +82 dBc f1 = 891.025 MHz, P1 = +14 dBm, f2 = 892.025 MHz, P2 = +14 dBm, fJAMMER = 836.0125 MHz, PJAMMER = –30 dBm, measured @ 835.0125 MHz and 837.0125 MHz for worst case over phase, 2:1 VSWR load +81 +82 dBc f1 = 825.995 MHz, P1 = +21.5 dBm, f2 = 826.995 MHz, P2 = +21.5 dBm, fJAMMER = 870.995 MHz, PJAMMER = –30 dBm, measured @ 869.995 MHz and 871.995 MHz for worst case over phase, 2:1 VSWR load +81 +82 dBc 1.8 2.0 RF Specifications (continued) Triple beat ratio (2:1 VSWR) 3BR DC/Control Specifications Switched supply voltage (Note 2) VDD Switched supply current IDD Control voltage: High Low CTRL1, CTRL2 Control current: High Low ICTL 3.00 0.3 1.80 (Note 3) 2.65 0 V mA 3.00 0.3 0.5 0.5 V V μA μA Note 1: Performance is guaranteed only under the conditions listed in this Table. Note 2: For best receiver sensitivity, VDD is recommended to be between 1.8 and 2.0 V with CTRL1/2 (high) no larger than VDD. Note 3: For 1.8 V control, VDD must be ≤ 2.65 V. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200983H • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2010 5 DATA SHEET • SKY14151-350LF SP4T SWITCH Table 4. SKY14151-350LF Truth Table Note: State CTRL1 (Pin 4) CTRL2 (Pin 3) RF Path 1 VLOW VLOW ANT to RF1 2 VLOW VHIGH ANT to RF2 3 VHIGH VLOW ANT to RF3 4 VHIGH VHIGH ANT to RF4 VHIGH = 1.8 V to VDD VLOW = 0 to 0.3 V Any state other than described in this Table places the switch into an undefined state. Typical Performance Characteristics (VDD = 2.5 to 3.0 V, CTRL1 = CTRL2 = VDD, TOP = +25 C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted) 0 0 RF1 RF2 RF3 RF4 –0.1 ANT to RF2 ANT to RF3 ANT to RF4 –10 –0.3 Isolation (dB) Insertion Loss (dB) –0.2 –5 –0.4 –0.5 –0.6 –15 –20 –25 –0.7 –30 –0.8 –35 –0.9 –1.0 0.5 1.0 1.5 2.0 2.5 –40 3.0 0.5 1.0 Frequency (GHz) –15 Isolation (dB) Isolation (dB) –10 –15 –20 –25 –20 –25 –30 –30 –35 –35 2.0 Frequency (GHz) Figure 5. Isolation vs Frequency (ANT to RF2 Insertion Loss State) 2.5 ANT to RF1 ANT to RF2 ANT to RF4 –5 –10 1.5 3.0 –40 0.5 1.0 1.5 2.0 Frequency (GHz) Figure 6. Isolation vs Frequency (ANT to RF3 Insertion Loss State) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 3.0 0 ANT to RF1 ANT to RF3 ANT to RF4 –5 1.0 2.5 Figure 4. Isolation vs Frequency (ANT to RF1 Insertion Loss State) 0 0.5 2.0 Frequency (GHz) Figure 3. Insertion Loss vs Frequency –40 1.5 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200983H 2.5 3.0 DATA SHEET • SKY14151-350LF SP4T SWITCH 0 0 ANT to RF1 ANT to RF2 ANT to RF3 –5 Input Return Loss (dB) Isolation (dB) –10 –15 –20 –25 –30 –10 –15 –20 –25 –30 –35 –35 –40 RF1 RF2 RF3 RF4 –5 –40 0.5 1.0 1.5 2.0 2.5 0.5 3.0 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Frequency (GHz) Figure 8. Input Return Loss vs Frequency Figure 7. Isolation vs Frequency (ANT to RF4 Insertion Loss State) –100 +5 –105 Noise Figure (dB) +4 IMD3 (dBm) –110 –115 –120 +3 +2 +1 0 –125 –1 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Frequency (GHz) –130 0 20 40 60 80 100 120 140 160 180 Note: For best receiver sensitivity, VDD is recommended to be between 1.8 and 2.0 V with CTRL1/2 (high) no larger than VDD. Phase (deg) Figure 10. Typical Noise Figure vs Frequency (VDD = 2 V, CTRL1/2 = 1.8 V) Figure 9. 3rd Order Intermodulation Distortion vs Phase fBLK 1760 MHz @ –15 dBm fFUND 1950 MHz @ +20 dBm fRX 2140 MHz, Measure Tone Circulator Signal Generator fFUND = 1950 MHz, @ +20 dBm Coupler to Monitor Input Power 1950 MHz Bandpass Filter Circulator Duplexer Phase Shifter SKY14151-350LF PFUND = +20 dBm PBLK = –15 dBm 1760 MHz Bandpass Filter Signal Generator fBLK = 1760 MHz @ –15 dBm Spectrum Analyzer fRX = 2140 MHz S1909a Figure 11. 3rd Order Intermodulation Test Setup Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200983H • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2010 7 DATA SHEET • SKY14151-350LF SP4T SWITCH Circulator LPF Testing under mismatched conditions over phase or testing under matched conditions: ZL = 50 Ω Combiner f1 PIN1, PIN2, PINJAMMER Circulator f1, f2 Phase Shifter Directional Coupler LPF SKY14151-350LF f2 10 dB 10 dB fJAMMER fJAMMER P 10 dB ZL Spectrum Analyzer 10 dB 30 dB Circulator f P3BL, P3BH fJAMMER Power Meter P (dBm) 3BRL = PJAMMER – P3BL 3BRH = PJAMMER – P3BH 3BR = Min(3BRL, 3BRH) PJAMMER P3BL f3BL = fJAMMER – (f2 – f1) P3BH fJAMMER f3BH = fJAMMER + (f2 – f1) f S1972 Figure 12. Triple Beat Ratio (3BR) Test Setup Evaluation Board Description The SKY14151-350LF Evaluation Board is used to test the performance of the SKY14151-350LF SP4T Switch. An Evaluation Board schematic diagram is provided in Figure 13. An assembly drawing for the Evaluation Board is shown in Figure 14. Components C3 and L1 constitute an ESD filter. This topology and the component values noted in Figure 13 may vary according to the ESD requirement and acceptable insertion loss for a specific application. Decoupling capacitors (C3 through C6) are recommended to suppress noise and to prevent RF leakage into the DC control circuits. DC blocking capacitors C1, C2, C7, C8, and C9 determine the low frequency operation of the switch. Increase the capacitor values to lower operation frequency. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 8 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200983H DATA SHEET • SKY14151-350LF SP4T SWITCH RF Output 2 RF Output 4 × C2 100 pF 13 RF1 14 GND 15 N/C 16 RF2 C1 100 pF 1 GND GND VDD ANT 2 Supply Voltage C4 10 nF 3 Control Signal 2 C5 100 pF 4 CTRL2 GND CTRL1 GND 12 C3 1 pF L1 10 nH 11 10 Antenna C9 100 pF 9 5 6 7 RF3 RF4 GND C6 100 pF GND Control Signal 1 8 RF Output 4 RF Output 3 C7 100 pF C8 100 pF Note: Some component labels may be different than the corresponding component symbol shown here. Component values, however, are accurate as of the date of this Data Sheet. S1950 Use 10 nF DC blocking capacitors (C1, C2, C7, C8, and C9) for