IDTF2250NLGK8. IDTF2250NLGK Datasheet GENERAL DESCRIPTION FEATURES COMPETITIVE ADVANTAGE DEVICE BLOCK DIAGRAM ORDERING INFORMATION APPLICATIONS

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1 IDTF225NLGK 5MHz to 6MHz GENERAL DESCRIPTION The IDTF225 is a low insertion loss Voltage Variable RF Attenuator (VVA) designed for a multitude of wireless and other RF applications. This device covers a broad frequency range from 5MHz to 6MHz. In addition to providing low insertion loss, the IDTF225 provides excellent linearity performance over its entire voltage control and attenuation range. The F225 uses a single positive supply voltage of 3.15V to 5.25V. Other features include the V MODE pin allowing either positive or negative voltage control slope vs attenuation and multi-directional operation meaning the RF input can be applied to either RF1 or RF2 pins. Control voltage ranges from V to 2.8V using either positive or negative control voltage slope. COMPETITIVE ADVANTAGE IDTF225 provides extremely low insertion loss and superb IP3, IP2, Return Loss and Slope Linearity across the control range. Comparing to the previous state-ofthe-art for silicon VVAs this device is better as follows: Insertion 2MHz: 1.4dB vs. 2.8dB Insertion 6MHz: 2.7dB vs. 7dB Maximum Attenuation Slope: 33dB/Volt vs. 53dB/Volt Minimum Return Loss up to 6MHz: 12.5dB vs. 7dB Minimum Output IP3: 31dBm vs. 15dBm Minimum Input IP2: 87dBm vs. 8dBm Maximum Operating Temperature: +15 C vs. +85 C 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 FEATURES Low Insertion Loss: 2MHz Typical / Min IIP3: 65dBm / 47dBm Typical / Min IIP2: 95dBm / 87dBm 33.6dB Attenuation Range Bi-directional RF ports +34.4dBm Input P1dB compression V MODE pin allows either positive or negative attenuation control response Linear-in-dB attenuation characteristic Supply voltage: 3.15V to 5.25V V CTRL range: V to 2.8V +15 C max operating temperature 3x3, 16-pin TQFN package DEVICE BLOCK DIAGRAM RF1 ORDERING INFORMATION PART# MATRIX Part# Omit IDT prefix VMODE RF Freq Range (MHz) Insertion 2GHz (db) IIP3 (dbm) Pinout Compatibility F RFSA223 F VDD Control IDTF225NLGK8 RF Product Line RF2 F HMC973LP3E VCTRL.8 mm height package Green Tape & Reel Temp Range 1 REV 2, May 215

2 IDTF225NLGK 5MHz to 6MHz ABSOLUTE MAXIMUM RATINGS Parameter / Condition Symbol Min Max Units V DD to GND V DD V V MODE to GND V MODE -.3 Minimum ( V DD, 3.9 ) V V CTRL to GND V DD = V to 3.V V CTRL -.3 V DD -.3 V DD = >3.V to 5.25V V CTRL -.3.6* V DD V RF1, RF2 to GND V RF V RF1 or RF2 Input Power applied for 24 hours maximum (V DD 2GHz and +85 C) P MAX24 3 dbm RF1 or RF2 Continuous Operating Power P MAX_OP See Figure 1 dbm Maximum Junction Temperature T JMAX +15 C Storage Temperature Range T ST C Lead Temperature (soldering, 1s) T LEAD +26 C ESD Voltage HBM (Per ESD STM5.1-27) V ESDHBM Class 1C ESD Voltage CDM (Per ESD STM ) V ESDCDM Class C1 FIGURE 1: MAXIMUM RF INPUT POWER VS. RF FREQUENCY 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) 8.6 C/W ΘJC (Junction Case) The Case is defined as the exposed paddle 5.1 C/W Moisture Sensitivity Rating (Per J-STD-2) MSL 1 2 REV 2, May 215

3 IDTF225NLGK 5MHz to 6MHz IDTF225 OPERATING CONDITIONS Parameter Symbol Condition Min Typ Max Units Operating Freq Range F RF 5 6 MHz Supply Voltage V DD V V V DD > 3.9V V MODE Logic IH V DD = 3.15 to 3.9V 1.17 V DD -.3V V V IL.63 V CTRL Range V CTRL Positive or negative slope 2.8 V Supply Current I DD ma Logic Current I MODE μa I CTRL Current I CTRL -1 1 μa RF Operating Power 3 P MAX, CW See Figure 1 dbm RF1 Port Impedance Z RF1 5 Ω RF2 Port Impedance Z RF2 5 Operating Temperature Exposed Paddle T Range CASE C Temperature Operating Conditions Notes: 1 Items in min/max columns in bold italics are Guaranteed by Test. 2 Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization. 3 Refer to the Maximum Operating RF Input Power vs. RF Frequency curves in Figure 1. 3 REV 2, May 215

4 IDTF225NLGK 5MHz to 6MHz IDTF225 SPECIFICATION Refer to EVKit / Applications Circuit, V DD = +3.3V, T C = +25 C, signals applied to RF1 input, F RF = 2MHz, minimum attenuation, P IN = dbm for small signal parameters, +2dBm for single tone linearity tests, +2dBm per tone for two tone tests, two tone delta frequency = 5MHz, PCB board traces and connector losses are de-embedded unless otherwise noted. Refer to Typical Operating Curves for performance over entire frequency band. Parameter Symbol Comment Min Typ Max Units Insertion Loss, IL A MIN Minimum Attenuation db Maximum Attenuation A MAX 34 2 db Insertion Phase Δ Φ ΔMAX At 36dB attenuation relative to Insertion Loss 27 Φ ΔMID At 18dB attenuation relative to Insertion Loss 1 deg Input 1dB Compression 3 P1dB 34.4 dbm 5MHz 4 16 Minimum RF1 Return Loss 7MHz 17 S11 over control voltage range 2MHz 17 db 6MHz 15 5MHz 4 16 Minimum RF2 Return Loss 7MHz 15 S22 over control voltage range 2MHz 16 db 6MHz 13 Input IP3 IIP3 65 Input IP3 over Attenuation IIP3 ATTEN All attenuation settings dbm Minimum Output IP3 OIP3 MIN Maximum attenuation Input IP2 IIP2 P IN + IM2 dbc, IM2 term is F1+F2 95 dbm Minimum Input IP2 IIP2 MIN All attenuation settings 87 dbm Input IH2 HD2 P IN + H2 dbc 9 dbm Input IH3 HD3 P IN + (H3 dbc /2) 54 dbm Settling Time T SETTL.1dB Any 1dB step in the db to 33dB control range 5% V CTRL to RF settled to within ±.1dB 15 µsec Specification Notes: 1 Items in min/max columns in bold italics are Guaranteed by Test 2 Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization. 3 The input 1dB compression point is a linearity figure of merit. Refer to Absolute Maximum Ratings section along with Figure 1 for the maximum RF input power vs. RF frequency. 4 Set blocking capacitors C7 & C8 to.1uf to achieve best return loss performance at 5MHz. 4 REV 2, May 215

5 IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS Unless otherwise noted, the following conditions apply: V DD = +3.3V or +5.V T C = +25ºC V MODE = V RF trace and connector losses are de-embedded for S-parameters Pin = dbm for all small signal tests Pin = +2dBm for single tone linearity tests (RF1 port driven) Pin = +2dBm/tone for two tone linearity tests (RF1 port driven) Two tone frequency spacing = 5MHz 5 REV 2, May 215

6 Min. Max. Attenuation Delta to 25C (db) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS [S2P BROADBAND PERFORMANCE] (-1-) Attenuation vs. V CTRL GHz / Vmode = V.9GHz / Vmode = 3V 2.GHz / Vmode = V 2.GHz / Vmode = 3V 3.GHz / Vmode = V 3.GHz / Vmode = 3V Attenuation vs. Frequency Vctrl =.V Vctrl =.8V Vctrl = 1.V Vctrl = 1.2V Vctrl = 1.4V Vctrl = 1.6V Vctrl = 1.8V Vctrl = 2.4V Frequency (GHz) Min. & Max. Attenuation vs. Frequency -4C / Vctrl =.V -2 25C / Vctrl =.V 15C / Vctrl =.V -1-4C / Vctrl = 3.V 25C / Vctrl = 3.V 15C / Vctrl = 3.V Frequency (GHz) Attenuation Delta to 25C vs. Frequency C /.9GHz -4C / 2.GHz -4C / 3.GHz 2. 15C /.9GHz 15C / 2.GHz 15C / 3.GHz REV 2, May 215

7 Insertion Phase (deg) Insertion Phase Slope (deg/v) RF1 Return Loss (db) RF2 Return Loss (db) Attenuation Slope (db/v) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CURVES [S2P vs. V CTRL ] (-2-) Attenuation vs. V CTRL -1.4GHz.7GHz 1.5GHz 2.7GHz 4.GHz 5.GHz 6.GHz Attenuation Slope vs. V CTRL GHz.7GHz 1.5GHz 2.7GHz 4.GHz 5.GHz 6.GHz RF1 Return Loss vs. V CTRL.4GHz RF2 Return Loss vs. V CTRL.4GHz.7GHz 1.5GHz.7GHz 1.5GHz GHz 4.GHz GHz 4.GHz 5.GHz 6.GHz 5.GHz 6.GHz Insertion Phase vs. V CTRL 7.4GHz (positive phase = electrically shorter).7ghz 6 1.5GHz 2.7GHz 5 4.GHz 5.GHz 4 6.GHz 3 Insertion Phase Slope vs. V CTRL GHz.7GHz 1.5GHz 2.7GHz 4.GHz 5.GHz 6.GHz REV 2, May 215

8 Insertion Phase (deg/v) Insertion Phase Slope (deg/v) RF1 Return Loss (db) RF2 Return Loss (db) Attenuation Slope (db/v) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS [S2P VS. V CTRL & TEMPERATURE] (-3-) Attenuation Response vs. V CTRL -1-4C /.9GHz 25C /.9GHz 15C /.9GHz -4C / 2.GHz 25C / 2.GHz 15C / 2.GHz -4C / 3.GHz Attenuation Slope vs. V CTRL C /.9GHz 25C /.9GHz 15C /.9GHz -4C / 2.GHz 25C / 2.GHz 15C / 2.GHz -4C / 3.GHz C / 3.GHz 15C / 3.GHz C / 3.GHz 15C / 3.GHz RF1 Return Loss vs. V CTRL -4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz RF2 Return Loss vs. V CTRL -4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz -1 15C /.9GHz 15C / 2.GHz 15C / 3.GHz -1 15C /.9GHz 15C / 2.GHz 15C / 3.GHz Insertion Phase vs. V CTRL 5-4C /.9GHz (positive phase = electrically shorter) 25C /.9GHz 15C /.9GHz 4-4C / 2.GHz 25C / 2.GHz 15C / 2.GHz 3-4C / 3.GHz 25C / 3.GHz 25 15C / 3.GHz Insertion Phase Slope vs. V CTRL 7-4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz 6 15C /.9GHz 15C / 2.GHz 15C / 3.GHz REV 2, May 215

9 Insertion Phase (deg) Insertion Phase (db) RF2 Return Loss (db) RF2 Return Loss (db) RF1 Return Loss (db) RF1 Return Loss (db) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS [S2P VS. ATTENUATION & TEMPERATURE] (-4-) RF1 Return Loss vs. Attenuation GHz.7GHz 1.5GHz 2.7GHz 4.GHz 5.GHz 6.GHz RF1 Return Loss vs. Attenuation -4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz 15C /.9GHz 15C / 2.GHz 15C / 3.GHz RF2 Return Loss vs. Attenuation.4GHz.7GHz 1.5GHz 2.7GHz -1 4.GHz 5.GHz 6.GHz Insertion Phase Δ vs. Attenuation 7.4GHz.7GHz 6 1.5GHz (positive phase = electrically shorter) 2.7GHz 5 4.GHz 5.GHz 4 6.GHz RF2 Return Loss vs. Attenuation -4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz 15C /.9GHz 15C / 2.GHz 15C / 3.GHz Insertion Phase Δ vs. Attenuation 5-4C /.9GHz -4C / 2.GHz -4C / 3.GHz 25C /.9GHz 25C / 2.GHz 25C / 3.GHz 4 15C /.9GHz 15C / 2.GHz 15C / 3.GHz REV 2, May 215

10 Max. Insertion Phase (deg) Gain Compression (db) Worst-Case RF1 Return Loss (db) Worst-Case RF2 Return Loss (db) Min. Max. Min./Max. Atenuation Slope (db/v) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS [S2P VS. FREQUENCY] (-) Min. & Max. Attenuation vs. Frequency Min. & Max. Attenuation Slope vs. Frequency 5 Max. Slope Min. Slope VCTRL varied from.8v to 1.8V C / Vctrl = V 25C / Vctrl = V 15C / Vctrl = V -4C / Vctrl = 3V 25C / Vctrl = 3V 15C / Vctrl = 3V Frequency (GHz) Worst-Case RF1 Return Loss vs. Frequency -4C 25C 15C Frequency (GHz) Worst-Case RF2 Return Loss vs. Frequency -4C 25C 15C Frequency (GHz) Max. Insertion Phase vs. Frequency 7-4C 6 25C (positive phase = electrically shorter) 15C Frequency (GHz) Gain Compression vs. Frequency 1 5MHz 1MHz 2MHz 4MHz 5MHz.5 1MHz 2MHz 4MHz 6MHz Frequency (GHz) RF Input Power (dbm) 1 REV 2, May 215

11 Worst-Case Return Loss (db) Group Delay (ps) RF1 Return Loss (db) RF2 Return Loss (db) Min. Max. IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS LOW FREQUENCY, GROUP DELAY] (-6-) Min. & Max. Attenuation vs. Low Frequency C / Vctrl = V 25C / Vctrl = V 15C / Vctrl = V -4C / Vctrl = 3V 25C / Vctrl = 3V 15C / Vctrl = 3V (C7,C8 set to.1uf) Low-Frequency Attenuation vs. V CTRL C / 43MHz 25C / 43MHz 15C / 43MHz -4C / 128MHz 25C / 128MHz 15C / 128MHz -4C / 255MHz 25C / 255MHz 15C / 255MHz -3-3 (C7,C8 set to.1uf) Frequency (MHz) Low-Frequency RF1 Return Loss vs. V CTRL -4C / 43MHz 25C / 43MHz 15C / 43MHz -4C / 128MHz 25C / 128MHz 15C / 128MHz -4C / 255MHz 25C / 255MHz 15C / 255MHz Low-Frequency RF2 Return Loss vs. V CTRL -4C / 43MHz 25C / 43MHz 15C / 43MHz -4C / 128MHz 25C / 128MHz 15C / 128MHz -4C / 255MHz 25C / 255MHz 15C / 255MHz (C7,C8 set to.1uf) (C7,C8 set to.1uf) Worst-Case Return Loss vs. Low Frequency (C7,C8 set to.1uf) -1-4C /RF1 25C / RF1 15C / RF1-4C / RF2 25C / RF2 15C / RF2 Group Delay vs. V CTRL C / Insertion Loss 25C / Insertion Loss 15C / Insertion Loss -4C / Max. Attenuation 25C / Max. Attenuation 15C / Max. Attenuation Frequency (MHz) Frequency (MHz) 11 REV 2, May 215

12 IH2 (dbm) IH3 (dbm) Input IP2 (dbm) Output IP2 (dbm) Input IP3 (dbm) Output IP3 (dbm) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS 2GHZ, V DD =3.3V [IP3, IP2, IH2, IH3 VS. V CTRL, V MODE ] (-7-) Input IP3 vs. V CTRL C / Vmode = V 25C / Vmode = V 4 15C / Vmode = V -4C / Vmode= 3V 25C / Vmode= 3V 3 15C / Vmode= 3V Input IP2 vs. V CTRL Output IP3 vs. V CTRL C / Vmode= 3V 1 15C / Vmode= 3V Output IP2 vs. V CTRL C / Vmode = V 25C / Vmode = V 15C / Vmode = V -4C / Vmode= 3V -4C / Vmode = V 25C / Vmode = V 15C / Vmode = V -4C / Vmode = 3V 25C / Vmode = 3V 15C / Vmode = 3V C / Vmode = V 25C / Vmode = V 15C / Vmode = V -4C / Vmode = 3V 25C / Vmode = 3V 15C / Vmode = 3V nd Harm Input Intercept Point vs. V CTRL rd Harm Input Intercept Point vs. V CTRL C / Vmode = V 25C / Vmode = V 15C / Vmode = V -4C / Vmode = 3V 25C / Vmode = 3V 15C / Vmode = 3V C / Vmode = V 25C / Vmode = V 15C / Vmode = V -4C / Vmode = 3V 25C / Vmode = 3V 15C / Vmode = 3V REV 2, May 215

13 IH2 (dbm) IH3 (dbm) Input IP2 (dbm) Output IP2 (dbm) Input IP3 (dbm) Output IP3 (dbm) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS 2GHZ, V DD =3.3V [IP3, IP2, IH2, IH3 VS. V CTRL, RF1/RF2 DRIVEN] (-8-) Input IP3 vs. V CTRL C / RF1 Driven 25C / RF1 Driven 4 15C / RF1 Driven -4C / RF2 Driven 3 15C / RF2 Driven Input IP2 vs. V CTRL Output IP3 vs. V CTRL Output IP2 vs. V CTRL C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven -4C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven nd Harm Input Intercept Point vs. V CTRL rd Harm Input Intercept Point vs. V CTRL C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven REV 2, May 215

14 IH2 (dbm) IH3 (dbm) Input IP2 (dbm) Output IP2 (dbm) Input IP3 (dbm) Output IP3 (dbm) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS 2GHZ, V DD =3.3V [IP3, IP2, IH2, IH3 VS. ATTENUATION] (-9-) Input IP3 vs. Attenuation C 4 25C 125C Input IP2 vs. Attenuation 12 Output IP3 vs. Attenuation Output IP2 vs. Attenuation 12-4C 25C 15C C C 15C C 25C C nd Harm Input Intercept Point vs. Attenuation rd Harm Input Intercept Point vs. Attenuation C 3-4C 7 25C 2 25C 6 15C C REV 2, May 215

15 IH2 (dbm) IH3 (dbm) Input IP2 (dbm) Output IP2 (dbm) Input IP3 (dbm) Output IP3 (dbm) IDTF225NLGK 5MHz to 6MHz TYPICAL OPERATING CONDITIONS 2GHZ, V DD =3.3V [IP3, IP2, IH2, IH3 VS. ATTEN, RF1/RF2 DRIVEN] (-1-) Input IP3 vs. Attenuation C / RF1 Driven 25C / RF1 Driven 4 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven Output IP3 vs. Attenuation C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven Input IP2 vs. Attenuation Output IP2 vs. Attenuation C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven 8 8-4C / RF1 Driven 7 25C / RF1 Driven 15C / RF1 Driven 6-4C / RF2 Driven 15C / RF2 Driven nd Harm Input Intercept Point vs. Attenuation rd Harm Input Intercept Point vs. Attenuation C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven C / RF1 Driven 25C / RF1 Driven 15C / RF1 Driven -4C / RF2 Driven 15C / RF2 Driven REV 2, May 215

16 IDTF225NLGK 5MHz to 6MHz PACKAGE DRAWING (3X3 16 PIN) 16 REV 2, May 215

17 IDTF225NLGK 5MHz to 6MHz PINOUT & BLOCK DIAGRAM GND 1 12 GND Control NC 2 11 NC RF1 3 1 RF2 NC 4 9 NC GND GND GND GND VMODE VDD VCTRL GND E.P. 17 REV 2, May 215

18 IDTF225NLGK 5MHz to 6MHz PIN DESCRIPTION Pin Name Function 1, 5, 6, 7, 8, 12, 13 GND 2, 4, 9, 11 NC 3 RF1 1 RF2 14 V CTRL 15 V DD 16 V MODE EP Ground these pins as close to the device as possible. No internal connection. These pins can be left unconnected or connected to ground (recommended). RF Port 1. Matched to 5 ohms. Must use an external AC coupling capacitor as close to the device as possible. For low frequency operation increase the capacitor value to result in a low reactance at the frequency of interest. RF Port 2. Matched to 5 ohms. Must use an external AC coupling capacitor as close to the device as possible. For low frequency operation increase the capacitor value to result in a low reactance at the frequency of interest. Attenuator control voltage. Apply a voltage in the range from V to 2.8V DC. See application section for details about V CTRL. Power supply input. Bypass to GND with capacitors close as possible to pin. Attenuator slope control. Set to logic LOW to enable negative attenuation slope. Set to logic HIGH to enable positive attenuation slope. Exposed Pad. Internally connected to GND. Solder this exposed pad to a PCB pad that uses multiple ground vias to achieve the specified RF performance. 18 REV 2, May 215

19 IDTF225NLGK 5MHz to 6MHz APPLICATIONS INFORMATION Default Start-up V CTRL V MODE must be tied to either GND or Logic HIGH. If V CTRL pin is left floating, the part will power up in the minimum attenuation state with a positive or negative slope dependent upon the V MODE Logic state. The V CTRl pin is used to control the attenuation of the F225. With V MODE set to a logic low (high) this places the device in a negative (positive) slope mode where increasing (decreasing) voltage from V (2.8V) to 2.8V (V) produces an increasing (a decreasing) attenuation from insertion loss (max attenuation) to max attenuation (insertion loss) respectively. The V CTRl pin has an on-chip pullup ESD diode so V DD should be applied before V CTRl is applied. If this sequencing is not possible, then resistor R2 should be set for 1kΩ to limit the current into the V CTRl for the case where V DD is not present. V MODE The V MODE pin is used to set the attenuation vs. V CTRl slope. With V MODE set to logic low (high) this will set the attenuation slope to be negative (positive). A negative (positive) slope is defined as increased (decreased) attenuation with increasing (decreasing) V CTRl voltage. The EVKIT provides and on-board jumper to manually set the V MODE. Installing a jumper on header J2 from VMODE to GND (VHI) to set the device for a negative (positive) slope. RF1 and RF2 Ports The F225 is a bi-directional device thus allowing RF1 or RF2 to be used as the RF input. As displayed in the Typical Operating Conditions curves, RF1 shows some enhanced linearity performance and therefore should be used as the RF input, if possible, for best results. This F225 has been designed to accept high RF input power levels, therefore V DD must be applied prior to the application of RF power to ensure reliability. DC blocking capacitors are required on the RF pins and should be set to a value that results in a low reactance over the frequency range of interest. Power Supplies The supply pin 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 1V/2uS. In addition, all control pins should remain at V (+/-.3V) while the supply voltage ramps or while it returns to zero. 19 REV 2, May 215

20 IDTF225NLGK 5MHz to 6MHz 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 control pins 14 and 16 is recommended as shown below. V MODE 5Kohm 2pf 5Kohm 2pf V CTRL VDD Control 2 11 RF1 3 1 RF REV 2, May 215

21 IDTF225NLGK 5MHz to 6MHz EVKIT/ APPLICATIONS CIRCUIT 21 REV 2, May 215

22 IDTF225NLGK 5MHz to 6MHz EVKIT PICTURE / LAYOUT (TOP SIDE) Short GND pin to VMODE pin to set for negative attenuation slope. For positive attenuation slope move shorting shunt from VMODE to VHI VDD RF1 RF2 VCTRL 22 REV 2, May 215

23 IDTF225NLGK 5MHz to 6MHz EVKIT PICTURE / LAYOUT (BOTTOM SIDE) VDD RF2 RF1 VCTRL 23 REV 2, May 215

24 IDTF225NLGK 5MHz to 6MHz EVKIT BOM TOP MARKINGS 4Y 446L F225 Lot Code Assembler Code Date Code [YWW] (Week 46 of 214) Part Number 24 REV 2, May 215