Constant Impedance K|Z| SPST RF Switch 30 MHz to 8000 MHz Description F2910 Datasheet Features The F2910 is a high reliability, low insertion loss, 50 Ω absorptive SPST RF switch designed for a multitude of wireless and RF applications. This device covers a broad frequency range from 30 MHz to 8000 MHz. In addition to providing low insertion loss, the F2910 also delivers excellent linearity and isolation performance while providing a 50 Ω termination on RF2 in the isolation mode. The F2910 includes a patent pending constant impedance K|Z| feature for the RF2 port. K|Z| maintains near constant impedance when switching RF ports and improves hot switching ruggedness. K|Z| minimizes VSWR transients and reduces phase and amplitude variations when switching. Insertion Loss 0.58 dB at 2 GHz High Isolation 51 dB at 2 GHz High Linearity IIP3 of 65 dBm Wide Single Positive Supply Voltage Range 3.3 V and 1.8 V compatible control logic Operating temperature -55 °C to +105 °C 2 mm x 2 mm 8-pin DFN package The F2910 uses a single positive supply voltage supporting either 3.3 V or 1.8 V control logic. Block Diagram Competitive Advantage Figure 1. Block Diagram The F2910 provides constant impedance for one RF port during transitions, improving a system’s hot-switching ruggedness. The device also supports high power handling and high isolation. Constant impedance K|Z| during switching transition Low insertion loss High isolation Excellent linearity Extended temperature range: -55 °C to +105 °C Typical Applications Base Station 2G, 3G, 4G Portable Wireless Repeaters and E911 systems Digital Pre-Distortion Public Safety Infrastructure WIMAX Receivers and Transmitters Military Systems, JTRS radios RFID handheld and portable readers Cable Infrastructure Wireless LAN Test / ATE Equipment © 2016 Integrated Device Technology, Inc 1 August 30, 2016 F2910 Datasheet Pin Assignments Figure 2. Pin Assignments for 2 mm x 2 mm x 0.9 mm 8-VFQFP-N – Top View RF2 V1 VDD RF1 8 7 6 5 EP F2910 1 2 3 4 NC GND GND NC Pin Descriptions Table 1. Pin Descriptions Number Name 1, 4 NC 2, 3 GND 5 RF1 6 VDD 7 8 V1 RF2 EP Description This pin may be connected to the paddle and can be grounded. Ground. Also, internally connected to the ground paddle. Ground this pin as close to the device as possible. RF1 Port. Matched to 50 Ω in the insertion loss state only. If this pin is not 0 V DC, then an external coupling capacitor must be used. Power Supply. Bypass to GND with capacitors shown in the Typical Application Circuit as close as possible to pin. Logic control pin. See Table 6 for proper logic setting. RF2 Port. Matched to 50 E. If this pin is not 0V DC, then an external coupling capacitor must be used. Exposed Pad. Internally connected to GND. Solder this exposed pad to a PCB pad that uses multiple ground vias to provide heat transfer out of the device and into the PCB ground planes. These multiple ground vias are also required to achieve the specified RF performance. © 2016 Integrated Device Technology, Inc 2 August 30, 2016 F2910 Datasheet Absolute Maximum Ratings Stresses beyond those listed below may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units VDD to GND VDD -0.3 V V1 to GND VLogic -0.3 +6.0 Lower of (VDD + 0.3V, 3.6V) +0.3 33 23 30 +140 +150 +260 2000 (Class 2) 1000 (Class C3) RF1, RF2 to GND VRF [a] RF Input Power Port 1 or 2 Other port terminated into 50 Ω PRF12 [a] RF Input Power Port 1 in isolation Port 2 terminated into 50 Ω PRF1_ISO [a] RF Input Power Port 2 in isolation Port 1 terminated into 50 Ω PRF2_ISO Maximum Junction Temperature Tjmax Storage Temperature Range TST Lead Temperature (soldering, 10s) TLEAD ElectroStatic Discharge – HBM VESDHBM (JEDEC/ESDA JS-001-2012) ElectroStatic Discharge – CDM VESDCDM (JEDEC 22-C101F) a. VDD = 2.7 V to 5.5 V, 30 MHz FRF 8000 MHz, Tc = 105°C, ZS = ZL = 50 ohms. ≤ © 2016 Integrated Device Technology, Inc ≤ 3 -0.3 -65 V V dBm °C °C °C V V August 30, 2016 F2910 Datasheet Recommended Operating Conditions Table 3. Recommended Operating Conditions Parameter Power supply voltage Logic Input High Threshold Logic Input Low Threshold Operating Temperature Range RF Frequency Range RF Continuous Input CW Power (Non-Switched) [d] RF Continuous Input Power (RF Hot Switching CW) [d] Symbol VDD VIH VIL TCASE Condition Minimum 2.7 V ≤ VDD ≤ 5.5 V Exposed Paddle Temperature FRF PRF PRFSW RF1 or RF2 as the input Tc = 85 ºC (Insertion loss state) Tc = 105 ºC Tc = 85 ºC RF1 as the input (Isolation state) Tc = 105 ºC Tc = 85 ºC RF2 as the input (Isolation state) Tc = 105 ºC Applied to RF2 input switching between Insertion loss to Isolation states Typical Maximum Units 2.7 1.1 [a] -0.3 [b] 5.5 Lower of (VDD, 3.6) 0.6 V V V -55 +105 °C 30 8000 [c] 30 27 20 17 27 24 MHz Tc = 85 ºC 24 Tc = 105 ºC 21 dBm dBm RF1/2 Port Impedance ZRFx Insertion loss state 50 E RF2 Port Impedance ZRFx Isolation state 50 E a. Items in min/max columns in bold italics are Guaranteed by Test. b. Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization. c. To achieve best performance from 5 – 8 GHz, the use of bypass capacitors as described in the Applications Circuit section is required. d. Levels based on: VDD = 2.7 V to 5.5 V, 30 MHz FRF 8000 MHz, ZS = ZL = 50 ohms. See Figure 3 for power handling derating vs RF frequency. ≤ ≤ Figure 3. Maximum RF Input Operating Power vs. RF Frequency © 2016 Integrated Device Technology, Inc 4 August 30, 2016 F2910 Datasheet Electrical Characteristics Table 4. Electrical Characteristics Typical Application Circuit: VDD = 3.3 V, TCASE = +25 °C, FRF = 2 GHz, Driven Port = RF2, Input power = 0 dBm, ZS = ZL = 50 E. PCB board trace and connector losses are de-embedded unless otherwise noted. IIP2 / IIP3: PIN = 13 dBm / tone, 50 MHz spacing. Performance beyond 5 GHz based on application circuit (Figure 20) using best RF PCB design practices. See note c for details. Parameter Logic Current DC Current Symbol Condition Min IIH, IIL IDD Typ -1 Max Units +1 µA VDD =3.3 V 190 VDD =5.0 V 220 374 0.03 GHz 0.35 GHz 1.0 GHz 2.0 GHz 0.38 0.44 0.50 0.70 [b] 0.55 0.60 0.67 0.75 0.80 [c] 1.00 [c] 1.55 [c] 85 73 61 51 46 41 37 33 [c] 29 [c] 26 [c] 3.3:1 2.0:1 27 25 20 18 20 [c] 25 [c] 13 [c] 304 [a] µA 0.80 0.85 0.90 1.00 3.0 GHz dB 4.0 GHz 5.0 GHz 6.0 GHz 7.0 GHz 8.0 GHz 0.03 GHz 0.35 GHz 66 1.0 GHz 55 2.0 GHz 45 3.0 GHz 40 Isolation ISO dB 4.0 GHz 35 5.0 GHz 30 6.0 GHz 7.0 GHz 8.0 GHz Insertion Loss to Isolation Max RF2 Port VSWR VSWR During Switching Isolation to Insertion Loss 2.0 GHz 3.0 GHz 4.0 GHz RF1, RF2 Return Loss RFRL 5.0 GHz dB (Insertion Loss State) 6.0 GHz 7.0 GHz 8.0 GHz a. Items in min/max columns in bold italics are Guaranteed by Test. b. Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization. c. To achieve performance beyond 5 GHz, the use of bypass capacitors (BOM C2, C3, and C5) installed close to the device as embodied in the evaluation board per the application circuit (Figure 20) is required. See the appropriate Typical Operating Conditions graphs. Insertion Loss IL © 2016 Integrated Device Technology, Inc 5 August 30, 2016 F2910 Datasheet Electrical Characteristics (Cont.) Typical Application Circuit: VDD = 3.3 V, TCASE = +25 °C, FRF = 2 GHz, Driven Port = RF2, Input power = 0 dBm, ZS = ZL = 50 E. PCB board trace and connector losses are de-embedded unless otherwise noted. IIP2 / IIP3: PIN = 13 dBm / tone, 50 MHz spacing. Performance beyond 5 GHz based on application circuit (Figure 20) using best RF PCB design practices. See note c for details. Parameter Symbol RF2 Return Loss (Isolation State) RFRLT Input 1dB Compression [d] ICP1dB Input 0.1dB Compression [d] ICP0.1dB Input IP2 [e] IIP2 Input IP3 [e] IIP3 Non-RF Driven Spurious [f] Switching Time [g] Maximum Switching Rate d. e. f. g. TSW 2.0 GHz 3.0 GHz 4.0 GHz 5.0 GHz 6.0 GHz 7.0 GHz 8.0 GHz 0.03 GHz 3.0 GHz 4.0 GHz 0.03 GHz 3.0 GHz 4.0 GHz F1 = 0.35 GHz F2 = 0.40 GHz F1 = 0.95 GHz F2 = 1.00 GHz F1 = 2.40 GHz F2 = 2.45 GHz 0.03 GHz 0.35 GHz 1.00 GHz 2.40 GHz Any port when externally terminated into 50 E 50% control to 90% RF 50% control to 10% RF 50% control to RF settled to within +/- 0.1 dB of insertion loss value SWRATE Minimum Typical 27 27 25 20 15 [c] 12 [c] 10 [c] 34 35 35 33 34 34 123 124 118 65 65 68 67 -102 265 225 Maximum dBm dBm dBm dBm dBm 500 500 © 2016 Integrated Device Technology, Inc 6 ns 280 25 VIDFT Units dB kHz Peak transients during switching. Rise Time 25 Measured with 20 ns risetime, Fall Time 45 0 to 3.3 V control pulse Items in min/max columns in bold italics are Guaranteed by Test. Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization. To achieve performance beyond 5 GHz, the use of bypass capacitors (BOM C2, C3, and C5) installed close to the device as embodied in the evaluation board per the application circuit (Figure 20) is required. See the appropriate Typical Operating Conditions graphs. The input 0.1 and 1 dB compression point is a linearity figure of merit. Refer to Absolute Maximum Ratings section for the maximum RF input power. RF1 or RF2 driven IIP2 / IIP3 results when in insertion loss state. IP2 Frequency = F1 + F2. Spurious due to on-chip negative voltage generator. Spurious fundamental is approximately 5.7 MHz. FRF = 1 GHz. Maximum Video Feed-through on RF Ports a. b. c. SpurMAX Condition mVpp August 30, 2016 F2910 Datasheet Thermal Characteristics Table 5. Package Thermal Characteristics Parameter Junction to Ambient Thermal Resistance. Junction to Case Thermal Resistance. (Case is defined as the exposed paddle) Moisture Sensitivity Rating (Per J-STD-020) Symbol Value Units θJA 159.5 °C/W θJC 15.1 °C/W MSL 1 Typical Operating Conditions (TOC) Unless otherwise noted: VDD = 3.3 V. ZL = ZS = 50 Ohms Single Ended. FRF = 2 GHz. PIN = 13 dBm / tone applied to RF2 port for two tone linearity tests. Two tone frequency spacing = 50 MHz. All temperatures are referenced to the exposed paddle. Evaluation Kit traces and connector losses are de-embedded. Performance beyond 5 GHz as listed in the Electrical Characteristics is based on the application circuit (Figure 20) with bypass capacitors (BOM C2, C3, and C5) installed. The capacitors must be installed in close proximity to the device as embodied in the evaluation board with best practices followed for PCB design. Performance above 5 GHz de-rated as shown in Typical Performance Characteristics plots Figure 10 to Figure 13 when application circuit with bypass capacitors is not utilized. Unless otherwise noted, C2, C3 and C5 are installed in following plots. © 2016 Integrated Device Technology, Inc 7 August 30, 2016 F2910 Datasheet Typical Performance Characteristics Insertion Loss vs. Frequency over Temperature Figure 5. 0.0 -20 -0.5 -30 Isolation (dB) Insertion Loss (dB) Figure 4. -1.0 -1.5 -2.0 Isolation vs. Frequency over Temperature -40 -50 -60 -70 -2.5 -80 -55C -3.0 -55C -90 25C 25C 105C 105C -3.5 0 2000 4000 6000 8000 -100 10000 0 2000 Frequency (MHz) 6000 8000 10000 Frequency (MHz) Return Loss vs. Frequency over Temp [RF1 Insertion Loss State] Figure 7. 0 0 -5 -5 -10 -10 Return Loss (dB) Return Loss (dB) Figure 6. 4000 -15 -20 -25 -30 Return Loss vs. Frequency over Temp [RF2 Insertion Loss State] -15 -20 -25 -30 -35 -35 -55C -55C -40 -40 25C 25C 105C 105C -45 -45 0 2000 4000 6000 8000 0 10000 2000 Frequency (MHz) Figure 8. 4000 6000 8000 10000 Frequency (MHz) Return Loss vs. Frequency over Temperature [RF2 Terminated State] Figure 9. Evaluation Board Loss vs. Frequency 0 0 -0.1 -5 -10 -0.3 Loss (dB) Return Loss (dB) -0.2 -15 -20 -0.4 -0.5 -0.6 -0.7 -25 -0.8 -55C -30 25C -55C 25C -0.9 105C 105C -1 -35 0 2000 4000 6000 8000 0 10000 © 2016 Integrated Device Technology, Inc 2000 4000 6000 8000 10000 Frequency (MHz) Frequency (MHz) 8 August 30, 2016 F2910 Datasheet Typical Performance Characteristics Figure 11. Isolation vs. Frequency With and Without Capacitors 0.0 -20 -0.5 -30 -40 -1.0 Isolation (dB) Insertion Loss (dB) Figure 10. Insertion Loss vs. Frequency With and Without Capacitors -1.5 -2.0 -2.5 -50 -60 -70 -80 w/C2, C3 and C5 installed -3.0 w/C2, C3 and C5 installed -90 w/C2, C3 and C5 removed -3.5 w/C2, C3 and C5 removed -100 0 2000 4000 6000 8000 10000 0 2000 Frequency (MHz) Figure 12. Return Loss vs. Frequency With and Without Capacitors 6000 8000 10000 Figure 13. Return Loss vs. Frequency With and Without Capacitors [State 0] -5 -5 -10 -10 Return Loss (dB) Return Loss (dB) 4000 Frequency (MHz) -15 -20 -25 -30 w/C2, C3 and C5 installed -35 -15 -20 -25 w/C2, C3 and C5 installed -30 w/C2, C3 and C5 removed w/C2, C3 and C5 removed -40 -35 0 2000 4000 6000 8000 10000 0 2000 Frequency (MHz) 4000 6000 8000 10000 Frequency (MHz) Figure 14. Input IP3 vs. Frequency Figure 15. 1 dB Compression at 3 GHz 80 1 78 0.5 Compression (dB) 76 IIP3 (dBm) 74 72 70 68 66 64 -55C 0 -0.5 -1 -1.5 -55C 25C 62 25C 105C 105C 60 -2 0 500 1000 1500 2000 2500 18 Frequency (MHz) © 2016 Integrated Device Technology, Inc 20 22 24 26 28 30 32 34 36 Input Power (dBm) 9 August 30, 2016 F2910 Datasheet Typical Performance Characteristics Figure 16. Switching Time Isolation to Insertion loss © 2016 Integrated Device Technology, Inc Figure 17. Switching Time Insertion Loss to Isolation 10 August 30, 2016 F2910 Datasheet Evaluation Kit Picture Figure 18. Top View Figure 19. Bottom View © 2016 Integrated Device Technology, Inc 11 August 30, 2016 F2910 Datasheet Control Mode Table 6. Switch Control Truth Table V1 (Logic) State Port Match 0 1 Isolation Insertion Loss RF1 port reflective, RF2 port terminated into 50 ohms RF1 and RF2 port matched to 50 ohm Evaluation Kit / Applications Circuit Figure 20. Electrical Schematic Note: The use of bypass capacitors C2, C3, and C5 as listed in the BOM (Table 7) is required to achieve performance as listed in the Electrical Characteristics for frequencies beyond 5 GHz. The capacitors must be installed in close proximity to the device as embodied in the evaluation board with best practices followed for PCB design. © 2016 Integrated Device Technology, Inc 12 August 30, 2016 F2910 Datasheet Table 7. Bill of Material (BOM) Part Reference QTY Description Manufacturer Part # Manufacturer C1 1 0.1 µF ±10%, 16V, X7R, Ceramic Capacitor (0402) GRM155R71C104KA88D Murata C2 1 0.5 pF ±0.1 pF, 50V, C0G, Ceramic Capacitor (0402) GJM1555C1HR50BB01 Murata C3 1 4.5 pF ±0.1 pF, 50V, C0G, Ceramic Capacitor (0402) GJM1555C1H4R5BB01D Murata C4 0 Not Installed (0402) C5 1 4.9 pF ±0.1 pF, 50V, C0G, Ceramic Capacitor (0402) GJM1555C1H4R9BB01 Murata R1 R2 1 1 15k E ±1%, 1/10W, Resistor (0402) 18k E ±1%, 1/10W, Resistor (0402) ERJ-2RKF1502X ERJ-2RKF1802X Panasonic Panasonic R3, R4 2 0 E 1/10W, Jumper (0402) ERJ-2GE0R00X Panasonic J1 – J4 4 SMA Edge Mount 142-0761-881 Cinch Connectivity J5 1 CONN HEADER VERT 4x2 POS GOLD 67997-108HLF Amphenol FCI TP1 0 Not Installed (Red Test Point Loop) TP2, TP3 0 Not Installed (Black Test Point Loop) U1 1 SPST Switch 2 mm x 2 mm 8 pin DFN F2910NBGP IDT 1 Printed Circuit Board F2910 EVKIT REV 01 IDT © 2016 Integrated Device Technology, Inc 13 August 30, 2016 F2910 Datasheet Evaluation Kit Operation Default Start-up Control pins include no internal pull-down resistors to logic LOW or pull-up resistors to logic HIGH. Power Supplies A common VCC power supply should be used for all pins requiring DC power. All supply pins should be bypassed with external capacitors to minimize noise and fast transients. Supply noise can degrade noise figure and fast transients can trigger ESD clamps and cause them to fail. Supply voltage change or transients should have a slew rate smaller than 1 V / 20 µs. In addition, all control pins should remain at 0 V (± 0.3 V) while the supply voltage ramps or while it returns to zero. Control Pin Interface If control signal integrity is a concern and clean signals cannot be guaranteed due to overshoot, undershoot, ringing, etc., the following circuit at the input of each control pin is recommended. This applies to control pin 7 as shown in Figure 21. If bypass capacitor C5 as described in the application circuit (Figure 20) is used to achieve high frequency performance optimization, the use of an additional 2 pF capacitor as shown in Figure 21 is not necessary. Figure 21. Control Pin signal integrity improvement circuit © 2016 Integrated Device Technology, Inc 14 August 30, 2016 F2910 Datasheet External Supply Setup Set up a VCC power supply in the voltage range of 2.7 V to 5.5 V with the power supply output disabled. Logic Control Setup Using the EVKIT to manually set the control logic: On connector J5, connect a 2-pin shunt from VCC (pin 3) to VLOGIC (pin 4). This connection provides the VCC voltage supply to the Eval Board logic control pull-up network. Resistors R1 and R2 form a voltage divider to set the VIH level over the 2.7 V to 5.5 V VCC range for manual logic control. Connector J5 has one logic input pin: V1 (pin 5). See Table 6 for Logic Truth Table. With the pull-up network enabled (as noted above) this pin can be left open to provide a logic high through pull-up resistor R1. To set a logic low for V1, connect a 2-pin shunt on J5 from VCTL (pin 5) to GND (pin 6). Note that when using the on board R1/R2 voltage divider, the current draw from the VCC supply will be higher by approximately VCC / 33 kΩ. Using external control logic: Pins 3, 4, 6, 7, and 8 of J5 should have no external connections. External logic control is applied to J5 V1 (pin 5). See Table 5 for the Logic Truth Table. Turn On Procedure Setup the supplies and EVKIT as noted in the External Supply Setup and Logic Control Setup sections above. Enable the VCC supply. Set the desired logic setting to achieve the desired Table 5 configuration. Note that external control logic should not be applied without VCC being present. Turn Off Procedure Set the logic control to a logic low. Disable the VCC supply. © 2016 Integrated Device Technology, Inc 15 August 30, 2016 F2910 Datasheet Package Drawings Figure 22. Package Outline Drawing © 2016 Integrated Device Technology, Inc 16 August 30, 2016 F2910 Datasheet Recommended Land Pattern Figure 23. Recommended Land Pattern © 2016 Integrated Device Technology, Inc 17 August 30, 2016 F2910 Datasheet Ordering Information Orderable Part Number Package MSL Rating Shipping Packaging Temperature F2910NBGP F2910NBGP8 F2910EVBI 2 x 2 x 0.9 mm 8-VFQFP-N 2 x 2 x 0.9 mm 8-VFQFP-N Evaluation Board MSL1 MSL1 Bulk Tape and Reel -55° to +105°C -55° to +105°C Marking Diagram 1. Line 1 is the part number. 2. Line 2 – “6” is last digit of the year. 3. Line 2 – “U” is the workweek code 4. Line 2 – AG is the sequential code © 2016 Integrated Device Technology, Inc 18 August 30, 2016 F2910 Datasheet Revision History Revision Date 2016-Aug-29 Description of Change Initial Release Corporate Headquarters Sales Tech Support 6024 Silver Creek Valley Road San Jose, CA 95138 www.IDT.com 1-800-345-7015 or 408-284-8200 Fax: 408-284-2775 www.IDT.com/go/sales www.IDT.com/go/support DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary. All contents of this document are copyright of Integrated Device Technology, Inc. All rights reserved © 2016 Integrated Device Technology, Inc 19 August 30, 2016