F2923 Datasheet Constant Impedance K|Z| SP2T RF Switch GENERAL DESCRIPTION 300 kHz to 8000 MHz FEATURES The F2923 is a low insertion loss 50Ω SP2T absorptive RF Switch designed for a multitude of wireless and other RF applications. This device covers a broad frequency range from 300 kHz to 8000 MHz. In addition to providing low insertion loss, industry leading isolation at 2 GHz and excellent linearity, the F2923 also includes a patent pending constant impedance (KZ) feature. KZ minimizes LO pulling in VCOs and reduces phase and amplitude variations in distribution networks. It is also ideal for dynamic switching/selection between two or more amplifiers while avoiding damage to upstream/downstream sensitive devices such as PAs and ADCs. • • • • • • • • • • • Constant Impedance K|Z| during transition Very low insertion loss: 0.48 dB @ 2 GHz High Input IP3: 66 dB @ 2 GHz RF1/RF2 to RF_Com Isolation: 74 dB @ 2 GHz 1-pin or 2-pin device control option Low DC current: 127 µA using 3.3 V logic Supply voltage: 3.3 V Supports 1.8 V and 3.3 V control logic Extended temperature: -55 °C to +105 °C 4 mm x 4 mm, 20-pin TQFN package Pin compatible with F2912 FUNCTIONAL BLOCK DIAGRAM The F2923 uses a single positive supply voltage of 3.3 V supporting three states using either 3.3 V or 1.8 V control logic. An added feature includes a ModeCTL pin allowing the user to control the device with either 1-pin or 2-pin control. Mode CTL COMPETITIVE ADVANTAGE 50Ω The F2923 provides constant impedance on all ports during transitions without compromising isolation, linearity, or insertion loss. CTL Pins 50Ω RF1 RF2 50Ω Constant impedance K|Z| during switching transition VSWR RF_Com port 1.4:1 vs. 9:1 for Standard Switch Insertion Loss = 0.48 dB* IIP3: +66 dBm* RF1/RF2 to RF_COM Isolation = 74 dB* Extended temperature: -55 °C to +105 °C Negative supply voltage not required RF_COM ORDERING INFORMATION Tape & Reel *2 GHz F2923NCGI8 APPLICATIONS • • • • • • • • • • • • Base Station 2G, 3G, 4G Portable Wireless Repeaters and E911 systems Digital Pre-Distortion Point to Point Infrastructure Public Safety Infrastructure WIMAX Receivers and Transmitters Military Systems, JTRS radios RFID handheld and portable readers Cable Infrastructure Wireless LAN Test / ATE Equipment F2923, Rev O 11/9/2015 RF Product Line 1 Green © 2015 Integrated Device Technology, Inc. F2923 ABSOLUTE MAXIMUM RATINGS Parameter / Condition Vcc to GND CTL1, CTL2 ModeCTL to GND RF1, RF2, RF_COM Maximum Junction Temperature Storage Temperature Range Lead Temperature (soldering, 10s) ESD Voltage– HBM (Per JESD22-A114) ESD Voltage – CDM (Per JESD22-C101) Symbol Vcc VCNTL VMODE VRF TJmax TST TLEAD VESDHBM VESDCDM Min -0.3 -0.3 -0.3 -0.3 -65 Max +3.9 Vcc + 0.3 Vcc + 0.3 +0.3 +140 +150 +260 Class 2 Class III ABS MAX RF POWER AT 2 GHZ WITH TC = +85 °C * RF1, RF2, RF_COM (RF1 or RF2 is connected to RF_COM, IL States) RF1, RF2, RF_COM (When port is internally terminated) +33dBm +24dBm ABS MAX RF POWER AT 2 GHZ WITH TC = +105 °C * RF1, RF2, RF_COM (RF1 or RF2 is connected to RF_COM, IL States) RF1, RF2, RF_COM (When port is internally terminated) +33dBm +21dBm Unit V V V V °C °C °C * Temperature of exposed paddle Stresses above those listed above may cause permanent damage to the device. Functional operation of the device at these or any other conditions above 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. PACKAGE THERMAL AND MOISTURE CHARACTERISTICS θJA (Junction – Ambient) θJC (Junction – Case) The Case is defined as the exposed paddle Moisture Sensitivity Rating (Per J-STD-020) Constant Impedance Absorptive SP2T RF Switch 2 60 °C/W 3.9 °C/W MSL1 Rev O 11/9/2015 F2923 F2923 RECOMMENDED OPERATING CONDITIONS Parameter Supply Voltage Operating Temperature Range RF Frequency Range Symbol VCC TCASE Conditions Case Temperature FRF Min 3.1 Typ -55 +105 0.3 8000 27 Selected Port (I.L. State) RF Continuous Input Power (CW) 1 PRF RF1 Port Impedance ZRF1 50 RF2 Port Impedance ZRF2 50 ZRF_COM 50 RF_COM Port Impedance Max 3.5 Unselected Port2 (Term State) 18 Units V O C MHz dBm Ω Note 1– See Figure 1 below for RF power handling levels for various conditions. Note 2– States 1, 2, or 3. FIGURE 1: MAXIMUM OPERATING RF INPUT POWER VS. RF FREQUENCY Rev O 11/9/2015 3 Constant Impedance Absorptive SP2T RF Switch F2923 F2923 SPECIFICATION Typical Application Circuit, VCC = +3.3 V, TC = +25 °C, FRF = 2 GHz, input power = 0 dBm unless otherwise stated. PCB board trace and connector losses are de-embedded unless otherwise noted. Min Typ Max Units Parameter Symbol Conditions Logic Input High VIH CTL1 and CTL2 pins 1.1 3.6 V Threshold Logic Input Low VIL CTL1 and CTL2 pins 0.6 V Threshold ModeCTL Input High Vcc V ModeCTL Input Low GND V Logic Current IIH, IIL CTL1, CTL2, ModeCTL pins 1000 nA DC Current (Vcc) ICC State 2 or State 3 127 150 µA VSWR during transition VSWRT RF1/RF2 to RF_COM 1.4:1 RF = 1 GHz 0.43 RF = 2 GHz 0.48 0.8 1 Insertion Loss RF1/RF2 to RF_COM IL RF = 4 GHz 0.63 dB (State 2 or 3) RF = 6 GHz 0.89 RF = 8 GHz 1.12 RF = 1 GHz 77 RF = 2 GHz 712 74 Isolation RF1 / RF2 to RF_COM ISO1 RF = 4 GHz 51 dB (State 2 or 3) RF = 6 GHz 40 RF = 8 GHz 37 RF = 1 GHz 73 RF = 2 GHz 61 63 Isolation RF1 to RF2 ISO2 dB RF = 4 GHz 51 (State 2 or 3) RF = 6 GHz 35 RF = 8 GHz 29 RF = 1 GHz 23.8 RF = 2 GHz 25.2 Return Loss RF_COM RL1 RF = 4 GHz 26.7 dB (State 1) RF = 6 GHz 18.4 RF = 8 GHz 16.6 RF = 1 GHz 29.6 RF = 2 GHz 25.4 Return Loss RF_COM RF = 4 GHz 26.1 RL2 dB (State 2 or 3) RF = 6 GHz 17.6 RF = 8 GHz 14.1 Note 1– Items in min/max columns in bold italics are Guaranteed by Test. Note 2– Items in min/max columns NOT in bold italics are Guaranteed by Design Characterization. Constant Impedance Absorptive SP2T RF Switch 4 Rev O 11/9/2015 F2923 F2923 SPECIFICATION (CONT.) Typical Application Circuit, VCC = +3.3 V, TC = +25 °C, FRF = 2 GHz, input power = 0 dBm unless otherwise stated. PCB board trace and connector losses are de-embedded unless otherwise noted. Parameter Symbol Conditions Min Typ Max Units RF = 1 GHz 22.6 RF = 2 GHz 23.4 Return Loss RF1, RF2 RL3 RF = 4 GHz 25.2 dB (State 1) RF = 6 GHz 19.9 RF = 8 GHz 11.2 RF = 1 GHz 33.7 RF = 2 GHz 28.4 Return Loss RF1, RF2 when selected RL4 RF = 4 GHz 28.0 dB (State 2 or 3) RF = 6 GHz 17.7 RF = 8 GHz 15.0 RF = 1 GHz 116 Input IP2 PIN= +13 dBm RF = 2 GHz 106 dBm RF1 / RF2 IIP2 per tone (State 2 or 3) RF = 3 GHz 105 RF = 1 GHz 66 RF = 2 GHz 66 Input IP3 PIN =+13 dBm RF1 / RF2 IIP3 RF = 3 GHz 65 dBm per tone (State 2 or 3) RF = 4 GHz 65 RF = 6 GHz 52 Input 1dB compression IP1dB RF = 2 GHz 32 dBm RF1 / RF2 (State 2 or 3) 3 50% control to 90% RF 0.6 50% control to 10% RF 0.5 Switching Time4 TSW µs 50% control to RF settled to 0.675 within +/- 0.1 dB of I.L. value. Maximum Switching Rate SWRATE 25 kHz Maximum spurious level SpurMAX RF ports terminated into 50Ω -137 dBm on any RF port5 Note 1– Items in min/max columns in bold italics are Guaranteed by Test. Note 2– Items in min/max columns NOT in bold italics are Guaranteed by Design Characterization. Note 3– The input 1dB compression point is a linearity figure of merit. Refer to Figure 1 above and Recommended Operating Conditions sections for the maximum RF input powers. Note 4– FRF = 2 GHz. Note 5– Spurious due to on-chip negative voltage generator. Typical generator fundamental frequency is 2.2 MHz. Rev O 11/9/2015 5 Constant Impedance Absorptive SP2T RF Switch F2923 Table 1 includes 3 states and provides the truth table for 2-pin control input. Table 1 - Switch Control Truth Table for 3 states using 2 control pins; pin 16 and pin 17 Control pin input State 1 2 3 4 CTL1 (Pin 17) Low Low High High CTL2 (Pin 16) Low High Low High RF1, RF2 input / output RF1 to RF Com RF2 to RF Com OFF OFF ON N/A OFF ON OFF N/A Table 2 includes 2 states and provides the truth table for 1-pin control input. Table 2 - Switch Control Truth Table for 2 states using a single control pin 16 Control pin input State 2 3 CTL1 (Pin 17) don't care don't care CTL2 (Pin 16) High Low RF1, RF2 input / output RF1 to RF Com RF2 to RF Com OFF ON ON OFF Table 3 provides the truth table for selecting the use of either 1 or 2 control pins. Table 3 - Mode Control (pin 19) Truth table to use either 1 or 2 control pins Pin Control Mode ModeCTL (Pin 19) 2-pin control: CTL1 and CTL2 GND 1-pin control: CTL2 VCC Notes: 1. When RF1 and RF2 ports are both open (State 1), all 3 RF ports are terminated to an internal 50 Ω termination resistor. 2. When RF1 or RF2 port is open (State 2 or State 3 OFF condition), the open port is connected to an internal 50Ω termination resistor. 3. When RF1 or RF2 port is closed (State 2 or State 3 ON condition), the closed port is connected to the RF_COM port. TYPICAL OPERATING CURVE CONDITIONS Unless otherwise noted, the following conditions apply: • • • • • • EVKit loss de-embedded for only insertion loss plots. Vcc = 3.3 V FRF = 2 GHz TAMB = 25 OC Small signal parameters measured with PIN = 0dBm. Two tone tests PIN =+13 dBm/tone with 50 MHz tone spacing. Constant Impedance Absorptive SP2T RF Switch 6 Rev O 11/9/2015 F2923 TYPICAL OPERATING CONDITIONS (- 1 -) Insertion Loss vs. Temperature Insertion Loss vs. Voltage 0 Insertion Loss (dB) Insertion Loss (dB) 0 -0.4 -0.8 -1.2 RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -1.6 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C -2 -0.4 -0.8 -1.2 RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -1.6 -2 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 4 5 6 7 8 Isolation vs. Voltage [RF_COM RF1 / RF2] 0 0 RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -10 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -10 -20 Isolation (dB) -20 Isolation (dB) 3 Frequency (GHz) Isolation vs. Temp [RF_COM RF1 / RF2] -30 -40 -50 -60 -70 -80 RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -30 -40 -50 -60 -70 -80 -90 -90 -100 -100 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 3 4 5 6 7 8 Frequency (GHz) Isolation vs. Temp [RF1 RF2, RF2 RF1] Isolation vs. Voltage [RF1 RF2, RF2 RF1] 0 0 RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -10 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -10 -20 Isolation (dB) -20 Isolation (dB) RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -30 -40 -50 -60 -70 -80 RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -30 -40 -50 -60 -70 -80 -90 -90 -100 -100 0 1 2 3 4 5 6 7 8 0 Frequency (GHz) Rev O 11/9/2015 1 2 3 4 5 6 7 8 Frequency (GHz) 7 Constant Impedance Absorptive SP2T RF Switch F2923 TYPICAL OPERATING CONDITIONS (- 2 -) RF1 Return Loss vs. Voltage RF1 Return Loss vs. Temperature 0 0 Return Loss (dB) -5 -10 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -5 Return Loss (dB) RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -15 -20 -25 -30 -35 -10 -15 -20 -25 -30 -35 -40 -40 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 4 5 6 7 8 7 8 7 8 RF2 Return Loss vs. Voltage 0 0 -10 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -5 Return Loss (dB) RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -5 Return Loss (dB) 3 Frequency (GHz) RF2 Return Loss vs. Temperature -15 -20 -25 -30 -35 -10 RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -15 -20 -25 -30 -35 -40 -40 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 3 4 5 6 Frequency (GHz) RF_COM Return Loss vs. Temperature RF_COM Return Loss vs. Voltage 0 0 -10 RF2 Sel, -55C RF2 Sel, 25C RF2 Sel, 105C RF1 Sel, 3.1V RF1 Sel, 3.3V RF1 Sel, 3.5V -5 Return Loss (dB) RF1 Sel, -55C RF1 Sel, 25C RF1 Sel, 105C -5 Return Loss (dB) RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -15 -20 -25 -30 -35 -10 RF2 Sel, 3.1V RF2 Sel, 3.3V RF2 Sel, 3.5V -15 -20 -25 -30 -35 -40 -40 0 1 2 3 4 5 6 7 8 0 Frequency (GHz) Constant Impedance Absorptive SP2T RF Switch 1 2 3 4 5 6 Frequency (GHz) 8 Rev O 11/9/2015 F2923 TYPICAL OPERATING CONDITIONS (- 3 -) Isolation vs. Temp [All Off State, RF_COM Driven] Isolation vs. Voltage [All Off State, RF_COM Driven] 0 0 RF1 Out, -55C RF1 Out, 25C RF1 Out, 105C -10 RF1 Out, 3.1V RF1 Out, 3.3V RF1 Out, 3.5V -10 -20 Isolation (dB) Isolation (dB) -20 RF2 Out, -55C RF2 Out, 25C RF2 Out, 105C -30 -40 -50 -60 -70 -80 -30 -40 -50 -60 -70 -80 -90 -90 -100 -100 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 4 5 6 7 8 RF_COM Return Loss [All Off State] vs. Voltage 0 0 -55C 25C 105C -10 3.1V 3.3V 3.5V -5 Return Loss (dB) -5 Return Loss (dB) 3 Frequency (GHz) RF_COM Return Loss [All Off State] vs. Temp -15 -20 -25 -30 -35 -10 -15 -20 -25 -30 -35 -40 -40 0 1 2 3 4 5 6 7 8 0 1 2 Frequency (GHz) 0 4 5 6 7 8 VSWR (During Switching) vs. Time 2 RF1 ( RF1 Term to RFCOM ) or RF2 ( RF2 Term to RFCOM ) RF1 ( RFCOM to RF1 Term ) or RF2 ( RFCOM to RF2 Term ) RFCOM ( RF1 to RF2 ) or RFCOM ( RF2 to RF1 ) -5 3 Frequency (GHz) Return Loss (During Switching) vs. Time RF1 ( RF1 Term to RFCOM ) or RF2 ( RF2 Term to RFCOM ) RF1 ( RFCOM to RF1 Term ) or RF2 ( RFCOM to RF2 Term ) RFCOM ( RF1 to RF2 ) or RFCOM ( RF2 to RF1 ) 1.8 -10 50% CTRL at t= t0 50% CTRL at t= t0 VSWR Return Loss (dB) RF2 Out, 3.1V RF2 Out, 3.3V RF2 Out, 3.5V -15 -20 1.6 1.4 -25 1.2 -30 -35 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 Time (µsec) Rev O 11/9/2015 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Time (µsec) 9 Constant Impedance Absorptive SP2T RF Switch F2923 TYPICAL OPERATING CONDITIONS (- 4 -) Switching Time Tc=25C [RF_COM Driven, RF1 to RF2] Switching Time Tc=25C [RF_COM Driven, RF2 to RF1] 0.6 0.6 RF1 On to Off RF2 On to Off RF2 Off to On Amplitude (V) Amplitude (V) 0.2 0.0 -0.2 0.2 0.0 -0.2 -0.4 -0.4 CTL2 switched high to low at t = t0 CTL2 switched low to high at t = t0 -0.6 -0.6 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.0 0.8 0.1 0.2 0.4 0.5 0.6 0.7 0.8 Switching Time Tc=-40C [RF_COM Driven, RF2 to RF1] Switching Time Tc=-40C [RF_COM Driven, RF1 to RF2] 0.6 0.6 RF1 On to Off RF2 On to Off RF2 On to Off RF1 Off to On 0.4 Amplitude (V) 0.4 Amplitude (V) 0.3 Time (µsec) Time (µsec) 0.2 0.0 -0.2 0.2 0.0 -0.2 -0.4 -0.4 CTL2 switched high to low at t = t0 CTL2 switched low to high at t = t0 -0.6 -0.6 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.0 0.8 0.1 0.2 RF1, 1GHz RF1, 2GHz 0.4 0.5 0.6 0.7 0.8 Input IP3 [1 GHz] Compression [1 GHz, 2 GHz, RF1, RF2] 0.5 0.3 Time (µsec) Time (µsec) 80 RF2, 1GHz RF2, 2GHz 75 0 Input IP3 (dBm) Loss Compression (dB) RF1 Off to On 0.4 0.4 -0.5 -1 -1.5 -55C / RF1 25C / RF1 105C / RF1 -55C / RF2 25C / RF2 105C / RF2 70 65 60 55 50 45 40 -2 22 24 26 28 30 32 34 3.1 36 Constant Impedance Absorptive SP2T RF Switch 3.2 3.3 3.4 3.5 VCC (V) Input Power (dBm) 10 Rev O 11/9/2015 F2923 TYPICAL OPERATING CONDITIONS (- 5 -) Input IP3 [2 GHz] Input IP3 [3 GHz] 80 80 25C / RF1 105C / RF1 -55C / RF2 25C / RF2 105C / RF2 75 Input IP3 (dBm) Input IP3 (dBm) 75 -55C / RF1 70 65 60 55 50 45 -55C / RF1 25C / RF1 105C / RF1 -55C / RF2 25C / RF2 105C / RF2 70 65 60 55 50 45 40 40 3.1 3.2 3.3 3.4 3.5 3.1 VCC (V) Rev O 11/9/2015 3.2 3.3 3.4 3.5 VCC (V) 11 Constant Impedance Absorptive SP2T RF Switch F2923 PACKAGE DRAWING (4 mm x 4 mm 20-pin TQFN), NCG20 Constant Impedance Absorptive SP2T RF Switch 12 Rev O 11/9/2015 F2923 LAND PATTERN DIMENSION Rev O 11/9/2015 13 Constant Impedance Absorptive SP2T RF Switch F2923 GND 1 GND 2 RF1 3 GND 4 GND 5 VCC ModeCTL N.C. CTL1 CTL2 PIN DIAGRAM 20 19 18 17 16 Control Circuit 50Ω 50Ω 50Ω 15 N.C. 14 GND 13 RF2 12 GND 11 GND 6 7 8 9 10 GND GND RF_COM GND GND E.P. PIN DESCRIPTION Pin Name 1, 2, 4, 5, 6, 7, 9, 10, 11, 12, 14 GND Ground these pins. 3 RF1 RF1 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used. 8 RF_COM RF Common Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used. 13 RF2 RF2 Port. Matched to 50Ω. If this pin is not 0V DC, then an external coupling capacitor must be used. 15 N.C. No internal connection. This pin can be left open or connected to ground. 16 CTL2 Control 2 – See Table 1 and Table 2 Switch Control Truth Tables for proper logic setting. 17 CTL1 Control 1 – See Table 1 and Table 2 Switch Control Truth Tables for proper logic setting. 18 N.C. No internal connection. 19 ModeCTL 20 Vcc 21 — EP Function Mode Control – See Table 3 Mode Control Truth Table. Apply VCC to select 1-pin control or GND for 2-pin control. Power Supply. Bypass to GND with capacitors shown in the Typical Application Circuit as close as possible to pin. 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 into the PCB ground planes. These multiple ground vias are also required to achieve the specified RF performance. Constant Impedance Absorptive SP2T RF Switch 14 Rev O 11/9/2015 F2923 APPLICATIONS INFORMATION Default Start-up Control pins include no internal pull-down resistors to logic LOW or pull-up resistors to logic HIGH. Upon startup, all control pins should be set to logic LOW (0) thereby enabling 2-pin switch control, opening both RF1 and RF2 paths, and setting logic control voltage to 3.3 V (see above tables for LOW logic states). 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 pins 16, 17, and 19 as shown below. 5k ohm 5k ohm ModeCTL 5k ohm CTL1 CTL2 2pF 20 2pF 2pF 19 18 17 1 16 15 Control Circuit 2 50Ω 14 50Ω 3 13 50Ω 4 12 5 11 6 Rev O 11/9/2015 7 8 15 9 10 Constant Impedance Absorptive SP2T RF Switch F2923 EVKIT PICTURE Top View Bottom View Constant Impedance Absorptive SP2T RF Switch 16 Rev O 11/9/2015 F2923 EVKIT / APPLICATIONS CIRCUIT Rev O 11/9/2015 17 Constant Impedance Absorptive SP2T RF Switch F2923 EVKIT BOM Part Reference QTY Mfr. Part # Mfr. C1 1 100 nF ±10%, 50V, X7R Ceramic Capacitor (0603) DESCRIPTION GRM188R71H104K Murata Murata C2 1 1000 pF ±5%, 50V, C0G, Ceramic Capacitor (0402) GRM1555C1H102J C3, C4, C6 3 100 pF ±5%, 50V, C0G, Ceramic Capacitor (0402) GRM1555C1H101J Murata R2, R3, R4, R5 4 0 Ω, 1/10W, Resistor (0402) ERJ-2GE0R00X Panasonic ERJ-2RKF1003X Panasonic Emerson Johnson R6 0 Not Installed (0402) R7, R8, R10 3 100k Ω ±1%, 1/10W, Resistor (0402) J1-J5 5 Edge Launch SMA (0.375 inch pitch ground tabs) 142-0701-851 J8 1 CONN HEADER VERT DBL 8 X 2 POS GOLD 67997-116HLF FCI VCC, GND, GND1 3 Test Point 5021 Keystone Electronics U1 1 SP2T Switch 4 mm x 4 mm QFN20-EP F2923NCGI IDT 1 Printed Circuit Board F2923 EVKIT Rev 01 IDT TOP MARKINGS Part Number IDTF29 23NCGI Z518BJG Assembler Code ASM Test Step Date Code [YWW] (Week 18 of 2015) Constant Impedance Absorptive SP2T RF Switch 18 Lot Code Rev O 11/9/2015 F2923 EVKIT OPERATION PCB RF Connectors The F2923 EVkit is a thin multilayer board (0.032” total thickness) designed using Rogers’ 4350 high RF performance material. Since this substrate is not as rigid as standard FR4, one must take care when making connections to the board to avoid physically damaging the board. It is suggested that the body of the connector be restrained while tightening the RF connectors so to not put stress on the PCB material. External Supply Setup Set up a VCC power supply in the voltage range of 3.1 V to 3.5 V and disable the power supply output. Logic Control Setup Using the EVKIT to manually set the Control Logic: To setup the part for two pin logic control connect a 2-pin shunt from pin 3 (ModeCTL) to pin 4 (GND) on connector J8. For one pin logic control leave J8 pin 3 open. An on-board pull-up resistor R10 will connect the ModeCTL pin to Vcc to provide the logic high for one pin control. The PCB includes 2 pull-up resistors (R7, R8) to Vcc to provide a logic high for CTL1 and CTL2 respectively. Installing a 2-pin shunt from pin 7 (CTL1) to pin 8 (GND) of J8 will provide a logic low for manual control of the CTL1 pin. Placing a 2-pin shunt from pin 9 (CTL2) to pin 10 (GND) of J8 will result in a logic low for the CTL2 pin. See Tables 1, 2 and 3 for control details. Resistor R6 along with the 1.8VSEL, 1.8VSEL2, and LogicCTL pins are not used on the F2923 EVKIT. Using External Control Logic: To setup the part for two pin logic control connect a 2-pin shunt from pin 3 (ModeCTL) to pin 4 (GND) on connector J8. For one pin control leave pin 3 (ModeCTL) of J8 open. In this configuration the ModeCTL pin will be pulled up to Vcc on the PCB through resistor R10. Turn on Procedure Setup the supplies and Eval Board as noted in the External Supply Setup and Logic Control Setup sections above. Connect the preset/ disabled VCC power supply to the VCC and GND loops on the PCB. If controlling CTL1 and CTL2 with external logic then set these to logic low. Enable the VCC supply. Set the desired logic setting using CTL1, and CTL2 Table 1 or Table 2 setting. Note that external control logic should not be applied without VCC being applied first. For manual logic control the J8 connector CTL1 and CTL2 pins can be grounded to a neighboring ground for a logic low or left open for a logic high. Turn off Procedure If using external control logic for CTL1, CTL2 then set them to a logic low. Disable the VCC supply. Rev O 11/9/2015 19 Constant Impedance Absorptive SP2T RF Switch F2923 REVISION HISTORY SHEET Rev Date O 2015-Nov-9 Page Description of Change Initial Release Constant Impedance Absorptive SP2T RF Switch 20 Rev O 11/9/2015 F2923 Corporate Headquarters 6024 Silver Creek Valley Road San Jose, CA 95138 USA Sales 1-800-345-7015 or 408-284-8200 Fax: 408-284-2775 www.idt.com Tech Support http://www.idt.com/support/technical-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. Copyright ©2015. Integrated Device Technology, Inc. All rights reserved. Rev O 11/9/2015 21 Constant Impedance Absorptive SP2T RF Switch