VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier x Single +5V Supply Voltage x 16-pin 4x4mm lead-free/green/ RoHS-compliant QFN Package x MTTF > 1000 years Applications x AGC circuitry x Temperature compensation circuits x DCS/PCS, cdma2000TM, W-CDMA The VG025 is available in a lead-free/green/RoHScompliant 16-pin 4x4mm QFN surface-mount package with an exposed backside paddle to allow an MTTF rating of over 1000 years at a mounting temperature of +85º C. All devices are 100% RF & DC tested and packaged on tape and reel for automated surface-mount assembly. Specifications (1) Parameter N/C N/C N/C 14 13 12 RF OUT N/C 2 11 N/C N/C 3 10 Interstage Match 9 N/C RF IN 4 5 6 7 8 Function RF Input Gain Control Interstage Match RF Output / DC bias No Connect or GND Ground Pin Number 4 8 6, 10 12 All other pins Backside slug Typical Performance (1) Units Min Operational Bandwidth Test Frequency Gain (2) Input Return Loss (2) Output Return Loss (2) Output P1dB Output IP3 (3) Noise Figure (2) Gain Variation Range (4) Gain Variation Control Voltage (5) Supply Voltage Operating Current Range Gain Control Pin Current 15 Gain Control x Constant +40 dBm OIP3 and +21 dBm P1dB over all gain settings 16 N/C 1 N/C x 21 dB Attenuation Range The VG025 is a high dynamic range variable gain amplifier (VGA) capable of achieving an analog attenuation range of up to 21 dB. The +21 dBm output compression point and +40 dBm output intercept point of the amplifier are maintained over the entire attenuation range, making the VG025 ideal for use in temperature compensation circuits or AGC loops. N/C x Tunable within 50 – 2200 MHz Functional Diagram N/C Product Description Interstage Match Product Features MHz MHz dB dB dB dBm dBm dB dB V V mA mA Typ 50 13.5 37 16 0 120 800 15 6.3 7.6 21.3 39 5.3 21 5 150 26 Max Parameter 2200 Frequency Gain (2) Input Return Loss (2) Output Return Loss (2) Output P1dB Output IP3 (3) Noise Figure (2) Gain Variation Range Units MHz dB dB dB dBm dBm dB dB Typical 240 15.4 11 11 21.8 42 4.5 20 800 15 6.3 7.6 21.3 39 5.3 21 1960 8.4 12 6.5 22 40 8.1 14 2140 8.4 11 5.6 22 40 8.2 13 24 4.5 180 28 1. Test conditions unless otherwise noted: 25ºC, Vsupply = +5 V, in tuned application circuit. Vctrl is the control voltage through the 120 dropping resistor as shown in the application circuit on page 2. 2. Specifications refer to the device at the maximum gain setting (Vctrl=0V). The input and output return loss will be dramatically improved with an attenuation setting greater than 1 dB. 3. 3OIP measured with two tones at an output power of +5 dBm/tone separated by 10 MHz. The suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule. 4. The gain variation range is measured as the difference in gain with Vctrl = 0 and 4.5V at 800 MHz. 5. This voltage refers to the VCTRL as shown in the circuit schematic on page 2. There should be a series resistance of 120 EHWZHHQWKHFRQWUROYROWDJHDQGSLQIRUSURSHURSHUDWLRQ : Absolute Maximum Rating Parameter Rating Operating Case Temperature Storage Temperature Amplifier Supply Voltage (pin 12) Pin 8 (Gain Control) Current RF Input Power (continuous) Junction Temperature -40 to +85 qC -55 to +125 qC +6 V 30 mA 4 dB above Input P1dB +220 qC Ordering Information Part No. Description VG025-G High Linearity Variable Gain Amplifier (lead-free/green/RoHS-compliant 4x4mm QFN package) VG025-PCB240 240 MHz Evaluation Board VG025-PCB800 800 MHz Evaluation Board VG025-PCB2000 1.7 – 2.2 GHz Evaluation Board Operation of this device above any of these parameters may cause permanent damage. Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 1 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier Application Circuit Configurations Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness The WJ VG025 variable gain amplifier can operate over a very broad range of frequencies (50 - 2200MHz), but needs specific matching circuits for specific bands of interest. At the maximum gain state, reasonable matching is only available for about ±10% of the reference frequency. The amplifier operates with a typical current of 150 mA at +5 V while the attenuator current can be varied from 0 to 30 mA, while maintaining constant OIP3 and P1dB. The RF matching of the VG025 for the entire frequency range can be accomplished with the systematic adjustment of only a few parts. The RF matching is not influenced by different attenuator drive methods provided there is adequate decoupling of the attenuator bias. This reference application circuit uses voltage applied between 0 and 4.5V onto the Vctrl as shown on the schematic above. The R2 is a current limiting resistor to help linearize the drive of the attenuator and give better attenuator current control. To properly design the VG025 for an application, pick the frequency of interest. Choose blocking capacitor values which give RF impedance of less than 3 ohms. Choose the RF chokes for the largest inductance while still having resonant frequency about 30% Reference Frequency C1, C5 C2 C3, C4 C6 C9 L1, L2 L3 L4 R1 R2 Attenuation Range Maximum Gain Input Return Loss Output Return Loss Output P1dB Output IP3 Noise Figure MHz pF pF PF pF pF nH nH nH dB dB dB dB dBm dBm dB 64 1000 0 .01 DNP 27 470 220 DNP DNP 120 20.8 14.9 14 10.7 21.8 40 5.9 127 1000 .01 DNP 8.2 220 100 DNP DNP 120 20.4 15.4 14.5 10.7 21.5 42 5.2 greater than the Reference frequency (this allows for good isolation and inductor variation). Next choose L3 and C9 for interstage matching. C9 is only needed for lower frequencies and determines the low frequency roll off of the gain. L3 will have dominant control over the input and output return losses at maximum gain state (0 mA gain control pin current). C2 is needed to resonate the package parasitics to achieve the maximum attenuation values with attenuator current. With attenuator control pin current of 26 mA, C2 can be chosen to provide maximum attenuation. See the chart below for suggested component values and predicted performance at various reference frequencies. Component values can be interpolated for reference frequencies not listed. For lower frequencies the lumped element values can be used and the layout with unplaced component pads does not greatly affect the RF performance of the circuit. For frequencies greater than 500 MHz, component size and trace length have more influence on circuit performance. Smaller components and shorter trace lengths reduce the affects of the external component parasitics and interaction with the multichip module parasitics. 170 1000 .01 DNP 5.6 120 68 DNP DNP 120 19.6 14.8 14.5 10 21.5 42 5.4 240 1000 .01 DNP 1.2 220 47 DNP DNP 120 20 15.4 11 11 21.8 42 4.5 800 56 27 .01 DNP DNP 22 8.2 82 DNP 120 21 15 6.3 7.6 21.3 39 5.3 1850 56 3.6 .01 DNP DNP 12 DNP 33 DNP 120 12 8.6 11 7.7 22 40 7.9 1960 56 3.6 .01 DNP DNP 12 DNP 33 DNP 120 14 8.4 12 6.5 22 40 8.1 2140 56 3.6 .01 DNP DNP 12 DNP 33 DNP 120 13 8.4 11 5.6 22 40 8.2 DNP = Do Not Place (Component is not used in the design) Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 2 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier 240 MHz Circuit Performance (VG025-PCB240) S21 vs. Frequency S11 vs. Frequency -5 -5 16 14 S22 (dB) 18 -10 -15 10 200 220 240 +25 °C 260 -40 °C +85 °C 280 -25 200 300 220 -15 260 -40 °C +85 °C 280 -25 200 300 S11 vs. Frequency vs. Control Voltage 0 15 -5 -5 0 -5 -10 Vctrl=0.000V Vctrl=0.784V Vctrl=1.844V Vctrl=4.230V 220 240 260 -10 -15 -20 Vctrl=1.133V -25 280 -30 200 300 220 280 Vctrl=0.000V Vctrl=1.133V 300 Vctrl=0.784V Vctrl=1.844V P1dB vs. Frequency Vctrl=1.133V Vctrl=4.230V Vctrl=1.844V -25 260 280 -30 200 300 20 18 +85 °C 245 40 5 30 20 0 4 8 12 16 Attenuation (dB) OIP3 vs. Attenuation Setting 20 24 35 30 25 35 25 8 10 -4 0 Normalized Gain vs. Vctrl 25 °C, 240 MHz 0 -5 -10 12 20 Pin 8 Attenuation Control Current (mA) 25 -80 -100 -4 0 4 8 Output Power (dBm) 12 16 4 5 Ictrl vs. Vctrl 25 °C 0 30 -4 25 -8 20 -12 -16 15 10 5 -20 0 -24 15 -60 16 Ictrl (mA) Normalized Gain (dB) 5 IMD_Low IMD_High -120 4 8 Output Power (dBm) 25 °C, 240 MHz 10 260 -40 °C Gain vs. Pin 8 Attn. Control Current 15 250 IMD products vs. Output Power 40 +25 °C +85 °C 240 +85 °C fundamental frequency = 240, 241 MHz; +25 °C, 0dB Atten -40 30 10 230 +25 °C Frequency (MHz) IMD products (dBc) OIP3 (dBm) 40 5 -40 °C 1 220 frequency = 240, 241 MHz, 0dB Atten. 45 300 3 OIP3 vs. Output Power frequency = 240, 241 MHz, +5 dBm/tone, +25 °C 280 4 2 10 250 260 Vctrl=0V (Minimum attenuation) 6 Frequency (MHz) 4 6 Attenuation (dB) 240 Noise Figure vs. Frequency 50 0 2 220 Frequency (MHz) NF (dB) phase change (deg) 22 240 -20 25 °C, 240 MHz 24 235 -15 Phase change vs. Attenuation 26 16 230 Vctrl=0.784V -10 Frequency (MHz) Vctrl=0V (Minimum attenuation) +25 °C Vctrl=0.000V 240 Frequency (MHz) -40 °C S22 (dB) S11 (dB) 5 0 260 Vctrl=4.230V 10 0 240 +85 °C S22 vs. Frequency vs. Control Voltage 0 45 +25 °C Frequency (MHz) 20 -15 200 220 Frequency (MHz) S21 vs. Frequency vs. Control Voltage S21 (dB) +25 °C 240 Frequency (MHz) P1dB (dBm) -10 -20 -20 -40 °C OIP3 (dBm) Vctrl=0V (Maximum Gain Setting) 0 12 Gain (dB) S22 vs. Frequency Vctrl=0V (Maximum Gain Setting) 0 S11 (dB) S21 (dB) Vctrl=0V (Maximum Gain Setting) 20 0 1 2 3 4 5 0 1 2 3 Vctrl (V) Vctrl (V) Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 3 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier 800 MHz Circuit Performance (VG025-PCB800) S21 vs. Frequency S11 vs. Frequency 18 0 -5 14 10 700 +25 °C 800 -10 -15 -40 °C -25 700 1000 -15 -40 °C +85 °C 900 -25 700 1000 S21 vs. Frequency vs. Control Voltage S11 vs. Frequency vs. Control Voltage 5 0 -5 -10 -15 700 Vctrl=0.00V Vctrl=0.78V Vctrl=1.73V Vctrl=4.50V 800 900 -5 -5 -10 -15 -20 -30 700 1000 Vctrl=0.00V Vctrl=0.78V Vctrl=1.73V Vctrl=4.50V 800 Vctrl=1.10V 900 -30 700 1000 900 1000 Phase change vs. Attenuation Noise Figure vs. Frequency 25 °C, 800 MHz Vctrl=0V (Maximum Gain Setting) +85 °C Noise Figure (dB) phase change (deg) +25 °C 6 60 40 20 800 900 1000 0 4 8 12 Attenuation (dB) OIP3 vs. Attenuation Setting 16 20 2 35 30 25 25 +25 °C 8 10 -40 °C 0 4 8 Output Power (dBm) Normalized Gain vs. Vctrl 25 °C, 800 MHz 25 °C, 800 MHz 4 0 -4 -8 12 Pin 8 Attenuation Control Current (mA) 25 -60 -80 -4 0 4 8 Output Power (dBm) 12 16 4 5 Ictrl vs. Vctrl 25 °C 0 30 -4 25 -8 20 -12 -16 15 10 5 -20 0 -24 20 IMD_Low IMD_High 16 Ictrl (mA) Normalized Gain (dB) 8 1000 +85 °C Gain vs. Pin 8 Attn. Control Current 12 900 -100 -4 16 800 IMD products vs. Output Power 40 30 +85 °C fundamental frequency = 800, 801 MHz; +25 °C, 0dB Atten -40 IMD products (dBc) OIP3 (dBm) 35 +25 °C Frequency (MHz) frequency = 800, 801 MHz, 0dB Atten. 45 40 15 3 OIP3 vs. Output Power frequency = 800, 801 MHz, +5 dBm/tone, +25 °C 10 4 -40 °C Frequency (MHz) 4 6 Attenuation (dB) 5 1 700 0 5 800 Vctrl=1.10V P1dB vs. Frequency 18 0 Vctrl=4.50V Vctrl=0V (Minimum attenuation) 20 2 Vctrl=0.78V Vctrl=1.73V Frequency (MHz) 22 0 Vctrl=0.00V Frequency (MHz) 24 45 -20 -25 80 16 700 -15 Frequency (MHz) 26 -40 °C 1000 S22 vs. Frequency vs. Control Voltage -10 -25 Vctrl=1.10V 900 0 S22 (dB) S11 (dB) 10 +85 °C Frequency (MHz) 0 15 +25 °C 800 Frequency (MHz) 20 S21 (dB) +25 °C 800 Frequency (MHz) P1dB (dBm) -10 -20 -20 +85 °C 900 -5 S22 (dB) 16 -40 °C OIP3 (dBm) Vctrl=0V (Maximum Gain Setting) 0 12 Gain (dB) S22 vs. Frequency Vctrl=0V (Maximum Gain Setting) 5 S11 (dB) S21 (dB) Vctrl=0V (Maximum Gain Setting) 20 0 1 2 3 4 5 0 1 2 3 Vctrl (V) Vctrl (V) Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 4 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier 1960 MHz Circuit Performance (VG025-PCB2000) S21 vs. Frequency vs. Control Voltage S11 vs. Frequency vs. Control Voltage S11 (dB) 0 -5 -10 1700 Vctrl=0.00V Vctrl=0.82V Vctrl=1.72V Vctrl=4.50V 1750 1800 1900 1950 -5 -10 -15 -25 1700 2000 1750 1800 Vctrl=0.82V Vctrl=1.15V Vctrl=4.50V Vctrl=1.72V 1850 1900 -20 1950 -25 1700 2000 1950 phase change (deg) 1900 2000 2100 Vctrl=0V (Maximum Gain Setting) 8 10 0 -10 2200 6 0 2 4 6 8 10 Attenuation (dB) 12 4 1700 14 40 35 +25 °C -40 °C 10 0 IMD_Low IMD_High -60 -80 -100 4 8 Output Power (dBm) 12 16 -4 0 25 °C, 1900 MHz 30 -2 25 4 2 0 -2 -4 Ictrl (mA) Normalized Gain (dB) 6 -6 -8 -10 15 20 Pin 8 Attenuation Control Current (mA) 25 4 5 20 15 10 0 -14 -6 16 5 -12 -4 12 25 °C 0 10 10 4 8 Output Power (dBm) Ictrl vs. Vctrl Normalized Gain vs. Vctrl Gain vs. Pin 8 Attn. Control Current 8 2200 -120 -4 25 °C, 1900 MHz 2100 +85 °C 25 8 2000 fundamental frequency = 800, 801 MHz; +25 °C, 0dB Atten -40 30 25 1900 IMD products vs. Output Power frequency = 1900, 1961 MHz, 0dB Atten. IMD products (dBc) OIP3 (dBm) 30 1800 Frequency (MHz) OIP3 vs. Output Power 35 4 6 Attenuation (dB) 7 5 45 40 2000 9 OIP3 vs. Attenuation Setting Gain (dB) 1900 Noise Figure vs. Frequency frequency = 1960, 1961 MHz, +5 dBm/tone, +25 °C 5 1850 25 °C, 1900 MHz Frequency (MHz) 0 1800 Phase change vs. Attenuation -20 2 1750 P1dB vs. Frequency 18 0 Vctrl=1.72V Vctrl=0V (Minimum attenuation) 20 45 Vctrl=0.82V Vctrl=1.15V Frequency (MHz) 22 1800 Vctrl=0.00V Vctrl=4.50V 20 16 1700 -15 Frequency (MHz) 24 OIP3 (dBm) Vctrl=0.00V -10 Frequency (MHz) 26 P1dB (dBm) -5 -20 Vctrl=1.15V 1850 0 NF (dB) S21 (dB) 5 S22 vs. Frequency vs. Control Voltage 0 S22 (dB) 10 0 1 2 3 4 5 0 1 2 3 Vctrl (V) Vctrl (V) Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 5 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier 2140 MHz Circuit Performance (VG025-PCB2000) S21 vs. Frequency vs. Control Voltage S11 vs. Frequency vs. Control Voltage S11 (dB) 0 -5 Vctrl=0.00V Vctrl=1.72V -10 2100 2120 Vctrl=0.82V Vctrl=4.50V 2140 2160 -10 -15 Vctrl=0.00V Vctrl=1.72V 2200 2120 2180 2200 phase change (deg) 1900 2000 2100 9 40 8 30 20 0 6 2 4 6 8 10 Attenuation (dB) 12 4 1700 14 IMD products (dBc) OIP3 (dBm) 25 +25 °C 8 10 -40 35 25 -40 °C 0 -80 -100 +85 °C 4 8 Output Power (dBm) 12 -4 16 4 8 Output Power (dBm) 25 -4 -6 -8 -10 -4 -12 -6 -14 20 Pin 8 Attenuation Control Current (mA) 25 Ictrl (mA) Normalized Gain (dB) -2 -2 16 4 5 25 °C 8 0 12 Ictrl vs. Vctrl 30 15 0 25 °C, 2140 MHz 0 2 2200 IMD_Low IMD_High Normalized Gain vs. Vctrl 25 °C, 2140 MHz 4 2100 -120 -4 Gain vs. Pin 8 Attn. Control Current 6 2000 fundamental frequency = 2140, 2141 MHz; +25 °C, 0dB Atten -60 10 10 1900 IMD products vs. Output Power frequency = 2140, 2141 MHz, 0dB Atten. 40 30 1800 Frequency (MHz) OIP3 vs. Output Power 30 4 6 Attenuation (dB) 7 5 10 45 35 2200 Vctrl=0V (Maximum Gain Setting) 50 2200 40 5 2180 Noise Figure vs. Frequency OIP3 vs. Attenuation Setting 0 2160 25 °C, 2140 MHz frequency = 2140, 2141 MHz, +5 dBm/tone, +25 °C 2 2140 Vctrl=1.15V Phase change vs. Attenuation 0 1800 2120 Vctrl=0.82V Vctrl=4.50V P1dB vs. Frequency Frequency (MHz) OIP3 (dBm) 2160 Vctrl=0.00V Vctrl=1.72V -25 2100 Vctrl=0V (Minimum attenuation) 18 Gain (dB) -20 Vctrl=1.15V Frequency (MHz) 20 0 2140 -15 Frequency (MHz) 22 45 Vctrl=0.82V Vctrl=4.50V -10 Frequency (MHz) 24 P1dB (dBm) -5 -25 2100 26 16 1700 -5 -20 Vctrl=1.15V 2180 0 NF (dB) S21 (dB) 5 S22 vs. Frequency vs. Control Voltage 0 S22 (dB) 10 20 15 10 5 0 0 1 2 3 4 5 0 1 2 3 Vctrl (V) Vctrl (V) Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 6 of 7 September 2006 VG025 The Communications Edge TM Product Information High Linearity Variable Gain Amplifier VG025-G Mechanical Information This package is lead-free/RoHS-compliant. It is compatible with both lead-free (maximum 260qC reflow temperature) and leaded (maximum 245qC reflow temperature) soldering processes. The plating material on the pins is annealed matte tin over copper. Outline Drawing Product Marking The component will be marked with a “VG025-G” designator with an alphanumeric lot code on the top surface of the package. Tape and reel specifications for this part will be located on the website in the “Application Notes” section. ESD / MSL Information Mounting Configuration / Land Pattern ESD Rating: Value: Test: Standard: Class 1B Passes 500V to <1000V Human Body Model (HBM) JEDEC Standard JESD22-A114 ESD Rating: Value: Test: Standard: Class IV Passes 1000V to <2000V Charged Device Model (CDM) JEDEC Standard JESD22-C101 MSL: Standard: Level 2 @ 260 Û&FRQYHFWLRQUHIORZ JEDEC Standard J-STD-020 N/C N/C N/C N/C Functional Pin Layout 16 15 14 13 N/C 1 12 RF OUT N/C 2 11 N/C N/C 3 10 9 N/C Parameter Operating Case Temperature Thermal Resistance, Rth (1) Junction Temperature, Tjc (2) Rating -40 to +85 qC 59 qC / W 129 qC 1. The thermal resistance is referenced from the hottest part of the junction to the backside ground copper tab. 2. This corresponds to the typical biasing condition of +5V, 150 mA at an 85q C case temperature. A minimum MTTF of 1 million hours is achieved for junction temperatures below 160q C. 6 7 N/C N/C Function RF Input Gain Control Interstage Match RF Output / DC bias No Connect or GND Ground 8 Gain Control 5 Interstage Match RF IN 4 Thermal Specifications Interstage Match Pin No 4 8 6, 10 12 All other pins Backside slug MTTF vs. GND Tab Temperature 1000 100 10 1 60 70 80 90 100 Tab Temperature (°C) 110 Specifications and information are subject to change without notice WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: [email protected] x Web site: www.wj.com Page 7 of 7 September 2006