F2250 RENESAS | Alldatasheet
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Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 1 REV 4, January 2017 F2250NLGK Datasheet GENERAL DESCRIPTION The F2250 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 50MHz to 6000MHz. In addition to providing low insertion loss, the F2250 provides excellent linearity performance over its entire voltage control and attenuation range. The F2250 uses a single positive supply voltage of 3.15V to 5.25V. Other features include the VMODE 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 0V to 3.6V using either positive or negative control voltage slope. COMPETITIVE ADVANTAGE F2250 provides extremely low insertion loss and superb IP3, IP2, Return Loss and Slope Linearity across the control range. Comparing to the previous state-of-the- art for silicon VVAs this device is better as follows: Insertion Loss @ 2000MHz: 1.4dB vs. 2.8dB Insertion Loss @ 6000MHz: 2.7dB vs. 7dB Maximum Attenuation Slope: 33dB/Volt vs. 53dB/Volt Minimum Return Loss up to 6000MHz: 12.5dB vs. 7dB Minimum Output IP3: 31dBm vs. 15dBm Minimum Input IP2: 87dBm vs. 80dBm Maximum Operating Temperature: +105°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: 1.4dB @ 2000MHz Typical / Min IIP3: 65dBm / 47dBm Typical / Min IIP2: 95dBm / 87dBm 33.6dB Attenuation Range Bi-directional RF ports +34.4dBm Input P1dB compression VMODE pin allows either positive or negative attenuation control response Linear-in-dB attenuation characteristic Supply voltage: 3.15V to 5.25V VCTRL range: 0V to 3.6V using 5V supply +105°C max operating temperature 3mm x 3mm, 16-pin QFN package DEVICE BLOCK DIAGRAM
ORDERING INFORMATION
PART# MATRIX Part# RF Freq Range (MHz) Insertion Loss (dB) IIP3 (dBm) Pinout Compatibility F2250 50 - 6000 1.4 (at 2GHz) +65 RFMD F2255 1 - 3000 1.1 (at 500MHz) +60 F2258 50 - 6000 1.4 (at 2GHz) +65 Hittite RF1 RF2 Control VDD VMODE VCTRL F2250NLGK8 0.9 mm height package Green Temp Range Tape & Reel RF Product Line
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 2 REV 4, January 2017 F2250NLGK Datasheet ABSOLUTE MAXIMUM RATINGS Parameter / Condition Symbol Min Max Units VDD to GND VDD -0.3 5.5 V VMODE to GND VMODE -0.3 Minimum ( VDD, 3.9 ) V VCTRL to GND VDD = 0V to 5.25V VCTRL -0.3 Minimum ( VDD, 4.0 ) V RF1, RF2 to GND VRF -0.3 0.3 V RF1 or RF2 Input Power applied for 24 hours maximum (VDD applied @ 2GHz and +85°C) PMAX24 30 dBm RF1 or RF2 Continuous Operating Power PMAX_OP See Figure 1 dBm Maximum Junction Temperature TJMAX +150 °C Storage Temperature Range TST -65 +150 °C Lead Temperature (soldering, 10s) TLEAD +260 °C ESD Voltage– HBM (Per ESD STM5.1-2007) VESDHBM Class 1C ESD Voltage – CDM (Per ESD STM5.3.1-2009) VESDCDM Class C3 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) 80.6°C/W ΘJC (Junction – Case) The Case is defined as the exposed paddle 5.1°C/W Moisture Sensitivity Rating (Per J-STD-020) MSL 1
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 3 REV 4, January 2017 F2250NLGK Datasheet F2250 OPERATING CONDITIONS Parameter Symbol Condition Min Typ Max Units Operating Freq Range FRF 50 6000 MHz Supply Voltage VDD 3.15 5.25 V VMODE Logic VIH VDD > 3.9V 1.17 3.6 2 V VDD = 3.15V to 3.9V 1.17 VDD -0.3 VIL 0 0.63 Supply Current IDD 0.5 1 1.17 2 mA Logic Current IMODE -1 38 μA ICTRL Current ICTRL -1 14 μA RF Operating Power 3 PMAX, CW See Figure 1 dBm RF1 Port Impedance ZRF1 50 Ω RF2 Port Impedance ZRF2 50 Operating Temperature Range TCASE Exposed Paddle Temperature -40 +105 °C 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.
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 4 REV 4, January 2017 F2250NLGK Datasheet F2250 SPECIFICATION Refer to EVKit / Applications Circuit, VDD = +3.3V, TC = +25°C, signals applied to RF1 input, FRF = 2000MHz, minimum attenuation, PIN = 0dBm for small signal parameters, +20dBm for single tone linearity tests, +20dBm per tone for two tone tests, two tone delta frequency = 50MHz, 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 (Minimum Attenuation) AMIN 2GHz 1.4 1.9 1 dB 3GHz 1.6 6GHz 2.6 3.1 Maximum Attenuation AMAX 34 2 35 dB Insertion Phase Δ ΦΔMAX At 36dB attenuation relative to Insertion Loss 27 deg ΦΔMID At 18dB attenuation relative to Insertion Loss 10 Input 1dB Compression 3 P1dB 34.4 dBm Minimum RF1 Return Loss over control voltage range S11 50MHz 4 16 dB 700MHz 17 2000MHz 17 6000MHz 15 Minimum RF2 Return Loss over control voltage range S22 50MHz 4 16 dB 700MHz 15 2000MHz 16 6000MHz 13 Input IP3 IIP3 65 dBm Input IP3 over Attenuation IIP3ATTEN All attenuation settings 44 47 Minimum Output IP3 OIP3MIN Maximum attenuation 35 Input IP2 IIP2 PIN + IM2dBC, IM2 term is F1+F2 95 dBm Minimum Input IP2 IIP2MIN All attenuation settings 87 dBm Input IH2 HD2 PIN + H2dBc 90 dBm Input IH3 HD3 PIN + (H3dBc/2) 54 dBm Settling Time TSETTL0.1dB Any 1dB step in the 0dB to 33dB control range 50% VCTRL to RF settled to within ± 0.1dB 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 0.01uF to achieve best return loss performance at 50MHz.
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 5 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS Unless otherwise noted, the following conditions apply: VDD = +3.3V or +5.0V TC = +25ºC VMODE = 0V RF trace and connector losses are de-embedded for S-parameters Pin = 0dBm for all small signal tests Pin = +20dBm for single tone linearity tests (RF1 port driven) Pin = +20dBm/tone for two tone linearity tests (RF1 port driven) Two tone frequency spacing = 50MHz
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 6 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS [S2P BROADBAND PERFORMANCE] (-1-) Attenuation vs. VCTRL Min. & Max. Attenuation vs. Frequency Attenuation vs. Frequency Attenuation Delta to 25C vs. Frequency -40 -35 -30 -25 -20 -15 -10 Attenuation (dB) VCTRL (V) 0.9GHz / Vmode = 0V 0.9GHz / Vmode = 3V 2.0GHz / Vmode = 0V 2.0GHz / Vmode = 3V 3.0GHz / Vmode = 0V 3.0GHz / Vmode = 3V -50 -45 -40 -35 -30 -25 -20 0 1 2 3 4 5 6 7 8 9 Min. Attenuation (dB) Frequency (GHz) -40C / Vctrl = 0.0V 25C / Vctrl = 0.0V 105C / Vctrl = 0.0V -40C / Vctrl = 3.0V 25C / Vctrl = 3.0V 105C / Vctrl = 3.0V Max. Attenuation (dB) -50 -40 -30 -20 -10 0 1 2 3 4 5 6 7 8 9 Attenuation (dB) Frequency (GHz) Vctrl = 0.0V Vctrl = 0.8V Vctrl = 1.0V Vctrl = 1.2V Vctrl = 1.4V Vctrl = 1.6V Vctrl = 1.8V Vctrl = 2.4V -3.00 -2.50 -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Attenuation Delta to 25C (dB) VCTRL (V) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 7 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CURVES [S2P vs. VCTRL] (-2-) Attenuation vs. VCTRL RF1 Return Loss vs. VCTRL Insertion Phase vs. VCTRL Attenuation Slope vs. VCTRL RF2 Return Loss vs. VCTRL Insertion Phase Slope vs. VCTRL -40 -35 -30 -25 -20 -15 -10 Attenuation (dB) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -40 -35 -30 -25 -20 -15 -10 RF1 Return Loss (dB) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -10 Insertion Phase (deg) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz Attenuation Slope (dB/V) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -40 -35 -30 -25 -20 -15 -10 RF2 Return Loss (dB) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -20 100 Insertion Phase Slope (deg/V) VCTRL (V) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz (positive phase = electrically shorter)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 8 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS [S2P VS. VCTRL & TEMPERATURE] (-3-) Attenuation Response vs. VCTRL RF1 Return Loss vs. VCTRL Insertion Phase vs. VCTRL Attenuation Slope vs. VCTRL RF2 Return Loss vs. VCTRL Insertion Phase Slope vs. VCTRL -40 -35 -30 -25 -20 -15 -10 Attenuation (dB) VCTRL (V) -40C / 0.9GHz 25C / 0.9GHz 105C / 0.9GHz -40C / 2.0GHz 25C / 2.0GHz 105C / 2.0GHz -40C / 3.0GHz 25C / 3.0GHz 105C / 3.0GHz -40 -35 -30 -25 -20 -15 -10 RF1 Return Loss (dB) VCTRL (V) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 25C / 0.9GHz 25C / 2.0GHz 25C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz Insertion Phase (deg) VCTRL (V) -40C / 0.9GHz 25C / 0.9GHz 105C / 0.9GHz -40C / 2.0GHz 25C / 2.0GHz 105C / 2.0GHz -40C / 3.0GHz 25C / 3.0GHz 105C / 3.0GHz Attenuation Slope (dB/V) VCTRL (V) -40C / 0.9GHz 25C / 0.9GHz 105C / 0.9GHz -40C / 2.0GHz 25C / 2.0GHz 105C / 2.0GHz -40C / 3.0GHz 25C / 3.0GHz 105C / 3.0GHz -40 -35 -30 -25 -20 -15 -10 RF2 Return Loss (dB) VCTRL (V) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 25C / 0.9GHz 25C / 2.0GHz 25C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz Insertion Phase Slope (deg/V) VCTRL (V) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 25C / 0.9GHz 25C / 2.0GHz 25C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz (positive phase = electrically shorter)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 9 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS [S2P VS. ATTENUATION & TEMPERATURE] (-4-) RF1 Return Loss vs. Attenuation RF2 Return Loss vs. Attenuation Insertion Phase Δ vs. Attenuation RF1 Return Loss vs. Attenuation RF2 Return Loss vs. Attenuation Insertion Phase Δ vs. Attenuation -40 -35 -30 -25 -20 -15 -10 0 4 8 12 16 20 24 28 32 36 RF1 Return Loss (dB) Attenuation (dB) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -40 -35 -30 -25 -20 -15 -10 0 4 8 12 16 20 24 28 32 36 RF2 Return Loss (dB) Attenuation (dB) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -10 0 4 8 12 16 20 24 28 32 36 Insertion Phase (deg) Attenuation (dB) 0.4GHz 0.7GHz 1.5GHz 2.7GHz 4.0GHz 5.0GHz 6.0GHz -40 -35 -30 -25 -20 -15 -10 0 4 8 12 16 20 24 28 32 36 RF1 Return Loss (dB) Attenuation (dB) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 25C / 0.9GHz 25C / 2.0GHz 25C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz -40 -35 -30 -25 -20 -15 -10 0 4 8 12 16 20 24 28 32 36 RF2 Return Loss (dB) Attenuation (dB) -40C / 0.9GHz -40C / 2.0GHz -40C / 3.0GHz 25C / 0.9GHz 25C / 2.0GHz 25C / 3.0GHz 105C / 0.9GHz 105C / 2.0GHz 105C / 3.0GHz (positive phase = electrically shorter)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 10 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS [S2P VS. FREQUENCY] (-5-) Min. & Max. Attenuation vs. Frequency Worst-Case RF1 Return Loss vs. Frequency Max. Insertion Phase vs. Frequency Min. & Max. Attenuation Slope vs. Frequency Worst-Case RF2 Return Loss vs. Frequency Gain Compression vs. Frequency -39 -37 -35 -33 -31 -29 -27 -25 -23 0 1 2 3 4 5 6 Min. Attenuation (dB) Frequency (GHz) -40C / Vctrl = 0V 25C / Vctrl = 0V 105C / Vctrl = 0V -40C / Vctrl = 3V 25C / Vctrl = 3V 105C / Vctrl = 3V Max. Attenuation (dB) -25 -20 -15 -10 0 1 2 3 4 5 6 Worst-Case RF1 Return Loss (dB) Frequency (GHz) -40C 25C 105C -10 0 1 2 3 4 5 6 Max. Insertion Phase (deg) Frequency (GHz) -40C 25C 105C 0 1 2 3 4 5 6 Min./Max. Atenuation Slope (dB/V) Frequency (GHz) Max. Slope Min. Slope -25 -20 -15 -10 0 1 2 3 4 5 6 Worst-Case RF2 Return Loss (dB) Frequency (GHz) -40C 25C 105C -1.5 -0.5 0.5 14 16 18 20 22 24 26 28 30 32 34 36 38 Gain Compression (dB) RF Input Power (dBm) 50MHz 100MHz 200MHz 400MHz 500MHz 1000MHz 2000MHz 4000MHz 6000MHz VCTRL varied from 0.8V to 1.8V (positive phase = electrically shorter)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 11 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS [S2P @ LOW FREQUENCY, GROUP DELAY] (-6-) Min. & Max. Attenuation vs. Low Frequency Low-Frequency RF1 Return Loss vs. VCTRL Worst-Case Return Loss vs. Low Frequency Low-Frequency Attenuation vs. VCTRL Low-Frequency RF2 Return Loss vs. VCTRL Group Delay vs. VCTRL -38 -34 -30 -26 -22 -18 -14 -10 0 100 200 300 400 500 Min. Attenuation (dB) Frequency (MHz) -40C / Vctrl = 0V 25C / Vctrl = 0V 105C / Vctrl = 0V -40C / Vctrl = 3V 25C / Vctrl = 3V 105C / Vctrl = 3V Max. Attenuation (dB) -40 -35 -30 -25 -20 -15 -10 RF1 Return Loss (dB) VCTRL (V) -40C / 43MHz 25C / 43MHz 105C / 43MHz -40C / 128MHz 25C / 128MHz 105C / 128MHz -40C / 255MHz 25C / 255MHz 105C / 255MHz -20 -15 -10 0 100 200 300 400 500 Worst-Case Return Loss (dB) Frequency (MHz) -40C /RF1 25C / RF1 105C / RF1 -40C / RF2 25C / RF2 105C / RF2 -40 -35 -30 -25 -20 -15 -10 Attenuation (dB) VCTRL (V) -40C / 43MHz 25C / 43MHz 105C / 43MHz -40C / 128MHz 25C / 128MHz 105C / 128MHz -40C / 255MHz 25C / 255MHz 105C / 255MHz -40 -35 -30 -25 -20 -15 -10 RF2 Return Loss (dB) VCTRL (V) -40C / 43MHz 25C / 43MHz 105C / 43MHz -40C / 128MHz 25C / 128MHz 105C / 128MHz -40C / 255MHz 25C / 255MHz 105C / 255MHz (C7,C8 set to 0.1uF) (C7,C8 set to 0.1uF) (C7,C8 set to 0.1uF) (C7,C8 set to 0.1uF) (C7,C8 set to 0.1uF)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 12 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS 2GHZ, VDD=3.3V [IP3, IP2, IH2, IH3 VS. VCTRL, VMODE] (-7-) Input IP3 vs. VCTRL Input IP2 vs. VCTRL 2nd Harm Input Intercept Point vs. VCTRL Output IP3 vs. VCTRL Output IP2 vs. VCTRL 3rd Harm Input Intercept Point vs. VCTRL Input IP3 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode= 3V 25C / Vmode= 3V 105C / Vmode= 3V 100 110 120 Input IP2 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode = 3V 25C / Vmode = 3V 105C / Vmode = 3V 100 110 120 130 IH2 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode = 3V 25C / Vmode = 3V 105C / Vmode = 3V Output IP3 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode= 3V 25C / Vmode= 3V 105C / Vmode= 3V 100 110 120 Output IP2 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode = 3V 25C / Vmode = 3V 105C / Vmode = 3V IH3 (dBm) VCTRL (V) -40C / Vmode = 0V 25C / Vmode = 0V 105C / Vmode = 0V -40C / Vmode = 3V 25C / Vmode = 3V 105C / Vmode = 3V
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 13 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS 2GHZ, VDD=3.3V [IP3, IP2, IH2, IH3 VS. VCTRL, RF1/RF2 DRIVEN] (-8-) Input IP3 vs. VCTRL Input IP2 vs. VCTRL 2nd Harm Input Intercept Point vs. VCTRL Output IP3 vs. VCTRL Output IP2 vs. VCTRL 3rd Harm Input Intercept Point vs. VCTRL Input IP3 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 Input IP2 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 130 IH2 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven Output IP3 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 Output IP2 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven IH3 (dBm) VCTRL (V) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 14 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS 2GHZ, VDD=3.3V [IP3, IP2, IH2, IH3 VS. ATTENUATION] (-9-) Input IP3 vs. Attenuation Input IP2 vs. Attenuation 2nd Harm Input Intercept Point vs. Attenuation Output IP3 vs. Attenuation Output IP2 vs. Attenuation 3rd Harm Input Intercept Point vs. Attenuation 0 4 8 12 16 20 24 28 32 36 Input IP3 (dBm) Attenuation (dB) -40C 25C 125C 100 110 120 0 4 8 12 16 20 24 28 32 36 Input IP2 (dBm) Attenuation (dB) -40C 25C 105C 100 110 120 130 0 4 8 12 16 20 24 28 32 36 IH2 (dBm) Attenuation (dB) -40C 25C 105C 0 4 8 12 16 20 24 28 32 36 Output IP3 (dBm) Attenuation (dB) -40C 25C 105C 100 110 120 0 4 8 12 16 20 24 28 32 36 Output IP2 (dBm) Attenuation (dB) -40C 25C 105C 0 4 8 12 16 20 24 28 32 36 IH3 (dBm) Attenuation (dB) -40C 25C 105C
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 15 REV 4, January 2017 F2250NLGK Datasheet TYPICAL OPERATING CONDITIONS 2GHZ, VDD=3.3V [IP3, IP2, IH2, IH3 VS. ATTEN, RF1/RF2 DRIVEN] (-10-) Input IP3 vs. Attenuation Input IP2 vs. Attenuation 2nd Harm Input Intercept Point vs. Attenuation Output IP3 vs. Attenuation Output IP2 vs. Attenuation 3rd Harm Input Intercept Point vs. Attenuation 0 4 8 12 16 20 24 28 32 36 Input IP3 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 0 4 8 12 16 20 24 28 32 36 Input IP2 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 130 0 4 8 12 16 20 24 28 32 36 IH2 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 0 4 8 12 16 20 24 28 32 36 Output IP3 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 100 110 120 0 4 8 12 16 20 24 28 32 36 Output IP2 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF2 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven 0 4 8 12 16 20 24 28 32 36 IH3 (dBm) Attenuation (dB) -40C / RF1 Driven 25C / RF1 Driven 105C / RF1 Driven -40C / RF2 Driven 25C / RF2 Driven 105C / RF2 Driven
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 16 REV 4, January 2017 F2250NLGK Datasheet PACKAGE DRAWING (3X3 16 PIN)
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 17 REV 4, January 2017 F2250NLGK Datasheet PINOUT & BLOCK DIAGRAM GND 1 2NC NC RF1 RF2 NC 11 NC GND Control GND GND GND 5 6 7 8 GND
13 GND
E.P.
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 18 REV 4, January 2017 F2250NLGK Datasheet PIN DESCRIPTION Pin Name Function 1, 5, 6, 7, 8, 12, 13 GND Ground these pins as close to the device as possible. 2, 4, 9, 11 NC No internal connection. These pins can be left unconnected or connected to ground (recommended).
3 RF1
RF Port 1. Matched to 50 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.
10 RF2
RF Port 2. Matched to 50 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.
14 VCTRL
Attenuator control voltage. Apply a voltage in the range as specified in the Operating Conditions. See application section for details about VCTRL. 15 VDD Power supply input. Bypass to GND with capacitors close as possible to pin.
16 VMODE
Attenuator slope control. Set to logic LOW to enable negative attenuation slope. Set to logic HIGH to enable positive attenuation slope. — EP 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.
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 19 REV 4, January 2017 F2250NLGK Datasheet APPLICATIONS INFORMATION Default Start-up VMODE must be tied to either GND or Logic HIGH. If VCTRL pin is left floating, the part will power up in the minimum attenuation state when VMODE = GND, or the maximum attenuation state when VMODE = High. VCTRL The VCTRl pin is used to control the attenuation of the F2250. With VMODE set to a logic low (high) this places the device in a negative (positive) slope mode where increasing (decreasing) voltage produces an increasing (a decreasing) attenuation from min attenuation (max attenuation) to max attenuation (min attenuation) respectively. The VCTRl pin has an on-chip pullup ESD diode so VDD should be applied before VCTRl is applied. If this sequencing is not possible, then resistor R2 should be set for 1kΩ to limit the current into the VCTRL pin. VMODE The VMODE pin is used to set the attenuation vs. VCTRl slope. With VMODE 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) VCTRl voltage. The EVKIT provides and on-board jumper to manually set the VMODE. 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 F2250 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 F2250 has been designed to accept high RF input power levels, therefore VDD 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/20uS. In addition, all control pins should remain at 0V (+/-0.3V) while the supply voltage ramps or while it returns to zero.
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 20 REV 4, January 2017 F2250NLGK Datasheet 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. Control 5 6 7 8 13141516 VMODE 2pf 5Kohm 2pf 5Kohm VCTRL VDD RF1 RF2
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 21 REV 4, January 2017 F2250NLGK Datasheet EVKIT/ APPLICATIONS CIRCUIT
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 22 REV 4, January 2017 F2250NLGK Datasheet EVKIT PICTURE / LAYOUT (TOP SIDE) RF2RF1 VCTRL VDD Short GND pin to VMODE pin to set for negative attenuation slope. For positive attenuation slope move shorting shunt from VMODE to VHI
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 23 REV 4, January 2017 F2250NLGK Datasheet EVKIT PICTURE / LAYOUT (BOTTOM SIDE) RF2 VDD RF1 VCTRL
Voltage Variable RF Attenuator 50MHz to 6000MHz Voltage Variable RF Attenuator 24 REV 4, January 2017 F2250NLGK Datasheet EVKIT BOM TOP MARKINGS 04Y 446L F2250 Part Number Date Code [YWW] (Week 46 of 2014) Lot Code Assembler Code
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