AH2 The Communications Edge ™ High Dynamic Range CATV Amplifier Product Features Product Description • 50-1000 MHz • -71 dBc CTB • -48 dBc CSO • +20 dBm P1dB • +40 dBm Output IP3 • 14.5 dB Gain • MTTF >100 Years • +5 V Single Positive Supply Functional Diagram The AH2 is a general purpose, high dynamic range amplifier targeting cable TV markets. The combination of gain flatness, high linearity and bandwidth make it ideal for CATV distribution, cable modem and laser diode driver applications. The AH2 is designed for 75 ohm systems and can operate directly from a +5 Volt DC regulator. The device is manufactured using reliable GaAs MESFET technology and boasts an MTTF of >100 years at a mounting temperature of 85°C. All devices are 100% RF and DC tested. 4 1 2 3 PIN No. Function 1 Input Ground 2 3 Output/Bias Ground 4 Typical Parameters Specifications Parameter Units Frequency Range S21 Output IP3 P1dB Operating Current Supply Voltage Max. Junction Temp. Thermal Resistance MHz dB dBm dBm mA V °C °C/W Min. Typ. Max. Condition 50-1000 14.5 +40 +21 150 +5 13 +37 120 See Note 2 180 160 59 See Note 3 Test Conditions unless otherwise noted. 1.Parameters reflect performance of a packaged device in a 75 Ω system at 25°C, Vdd = 5.0V, and 800 MHz. 2. OIP3 measured with 2 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 OIP3 using a 2:1 slope rule. 3. The maximum junction temperature ensures a minimum MTTF rating of 1 million hours of usage at a tab temperature of +85°C. The MTTF plot and more information is located in the WJ Application Note “AH2 Temperature Effects on Reliability” for more information. Parameter Frequency S21 - Gain S21 - Gain S11 - Input Return Loss S22 - Output Return Loss Output IP3 Output IP2 P1dB Noise Figure CTB CSO Xmod Units Typical MHz dB dB dB dB dBm dBm dBm dB dBc dBc dBc 50-1000 14.5 13.2 -14 -17 +40 +47 +20 3.5 -71 -48 -65 Condition 50 MHz 860 MHz See Note 2 See Note 5 See Note 5 See Note 5 Test Conditions unless otherwise noted: 4. T=25°C, Vdd = 5.0V in a 75 Ω application circuit (AH2-PCB). 5. 77 Channels 50-550 MHz, +34 dBmV/channel, flat-loading. Absolute Maximum Ratings Parameter Operating Case Temperture Storage Temperature DC Voltage RF Input Power (continuous) Ordering Information Rating -40 to +85°C -40 to +125°C +6.0 V +10 dBm Part No. Description AH2 High Dynamic Range CATV Amplifier (Available in tape and reel) Fully Assembled Single Ended CATV Application Circuit (75 Ω) AH2-PCB 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. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com February 2004 AH2 Single - Ended CATV, 75 Ω Evaluation Circuit: 50-860 MHz (AH2 - PCB) Typical Performance (75 Ohm System) Frequency S21 S11 S22 OIP2 OIP3 Noise Figure Bias MHz 50 450 dB 14.5 14.5 dB -11.1 -12.7 dB -9.5 -22.9 dBm +46.8 +46.9 dBm +39.8 +40.7 dB 3.9 3.1 Vdd = 5 V, Id = 150 mA 750 13.7 -14.5 -12.3 +47.7 +41.0 3.2 Schematic C2 2.2 pF 0603 Multi-Channel Measurements Parameter Frequency CTB 50-550 MHz CSO 50-550 MHz XMOD 50-550 MHz FR4 Board Layout (T = 28 Mils to ground plane) GND AH2 L1 12 nH 0603 Value -71 dBc -48 dBc -65 dBc Note: 77 Channels, 50-550 MHz, +34 dBmV/channel, flat-loading C3 1000 pF 0603 C1 1000 pF 0603 RF IN 860 13.2 -18.3 -10.6 +48.1 +40.8 3.2 All Trans. Lines Z - 75 Ohm RF OUT L2 270 nH 1008 AH2 C1 L1 C3 DC +5 V OUTPUT INPUT C4 1000 pF 0603 3 or moreVia Grounds req. L2 GND C2 Place inductor close to input Length less than 100 mil +5 V C4 Note: 0.5 dB of gain slope is due to the connector and board losses. Input / Output Return Loss and Isolation Linearity vs. Frequency -10 S11 -20 S12 45 40 35 0 200 400 600 Frequency (MHz) 800 200 800 1000 0 400 600 Frequency (MHz) 800 1000 800 1000 Noise Figure 45 OIP3 Frequency = 450 MHz -50 CSO -60 XMOD Noise Figure (dB) 77 Channel Flat Loading, +34 dBmV Output Power OIP2 35 200 5 -40 dBc Intercept Point (dBm) 400 600 Frequency (MHz) CTB, CSO, and XMOD vs. Frequency 55 40 14 10 0 1000 OIP2 and OIP3 vs. Power 50 16 12 OIP3 -30 -40C +25C +85C 18 OIP2 50 S21 (dB) Intercept Point (dBm) S22 Magnitude (dB) Gain 20 55 0 -70 4 3 2 1 30 CTB 0 -80 25 -4 -2 0 2 4 6 Output Power (dBm) 8 10 0 100 200 300 400 Frequency (MHz) 500 600 0 200 400 600 Frequency (MHz) WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com February 2004 AH2 Push-Pull, 75 Ω CATV Evaluation Circuit: 50-860 MHz Typical Performance (75 Ohm System) Frequency S21 S11 S22 OIP2 OIP3 Noise Figure Bias Multi-Channel Measurments MHz 50 450 dB 11.1 10.8 dB -10.2 -9.7 dB -13.3 -14.1 dBm 72.0 70.0 dBm 42.0 43.0 dB 5.5 4.3 Vdd = 5 V, Id = 300 mA 750 10.6 -10.8 -15.4 72.0 41.0 5.0 Parameter CTB CSO XMOD 860 10.5 -11.0 -16.4 70.0 40.0 5.4 Frequency 50-550 MHz 50-550 MHz 50-550 MHz Value -72 dBc -75 dBc -68 dBc Note: 77 Channels, 50-550 MHz, +34 dBmV/channel, flat-loaded Schematic C3 1000 pF 0603 R2 560 Ω 0603 DC +5 V L2 470 nH 1008 C2 100 pF 0603 70 R2 C5 T2 C2 Note: 0.7 dBm of loss is due to the balun and board losses S21 5 0 -5 S11 77 Channel Flat Loading, +34 dBmV Output Power OIP2 60 -65 XMOD 50 40 OIP3 30 -70 CTB -75 20 CSO 10 S22 400 600 Frequency (MHz) CTB, CSO, and XMOD vs. Frequency -60 dBc Intercept Point (dBm) Magnitude (dB) 80 10 200 AH2 Linearity vs. Frequency 15 0 C3 RF OUT Core: TOK H5C2-T3.1-1.3-1.3 Wire: MWS B2383211 S-Parameters -20 C1 R1 C5 1000 pF 0603 3 or more Via Grounds req. -10 or MACOM ETC1-1-13 surface-mount BALUN C4 AH2 T1 6 Turns bifilar wire around ferrite core L1 470 nH 1008 AH2 -15 Interior Trans. Lines Z = 37.5 Ohm T2 AH2 T1 6 Turns bifilar RF IN wire around ferrite core FR4 Board Layout (T = 28 Mils to ground Plane) C4 1000 pF 0603 C1 100pF 0603 R1 560 Ω 0603 -80 0 800 1000 0 200 400 600 Frequency (MHz) 800 1000 0 100 200 300 400 Frequency (MHz) WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com 500 600 February 2004 AH2 Typical Test Data S-Parameters (Vds = +5 V, Ids = 150 mA, T = 25°C, unmatched device in a 75 ohm system) Freq. (MHz) S11 (dB) S11 (Ang) S21 (dB) S21 (Ang) S12 (dB) S12 (Ang) S22 (dB) S22 (Ang) 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 -18.00 -17.80 -16.90 -16.00 -14.55 -12.92 -12.35 -11.65 -11.00 -10.43 -9.88 -9.44 -9.00 -8.56 -8.23 -7.88 -7.53 -7.25 -6.97 -6.72 -34.61 -42.76 -48.97 -53.88 -58.61 -65.22 -71.82 -77.23 -82.95 -87.24 -91.75 -95.68 -99.68 -102.92 -106.2 -109.41 -112.2 -114.93 -117.87 -120.3 15.49 15.43 15.37 15.31 15.22 15.14 15.06 14.97 14.86 14.75 14.63 14.50 14.37 14.23 14.09 13.92 13.76 13.62 13.45 13.29 173.26 171.19 168.08 164.88 162.05 158.92 155.7 152.52 149.40 146.28 143.33 140.18 137.27 134.37 131.52 128.75 126.18 123.48 120.85 118.27 -24.20 -24.14 -24.16 -24.17 -24.14 -24.17 -24.07 -24.10 -23.99 -24.03 -24.00 -23.96 -23.91 -23.94 -23.90 -23.90 -23.84 -23.83 -23.83 -23.81 4.59 2.04 0.99 0.27 0.08 -0.22 -0.74 -1.02 -1.51 -1.44 -2.11 -2.40 -2.75 -3.24 -3.68 -3.95 -4.27 -5.01 -5.79 -5.85 -24.26 -24.75 -23.99 -22.81 -22.96 -23.00 -22.03 -21.07 -20.28 -19.51 -18.84 -18.26 -17.73 -17.21 -16.76 -16.40 -16.02 -15.66 -15.33 -15.04 -85.84 -86.37 -88.74 -91.71 -92.44 -92.45 -96.12 -98.24 -100.75 -102.72 -104.75 -106.88 -108.74 -110.42 -111.98 -113.70 -115.37 -117.11 -119.00 -121.09 WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com February 2004 AH2 Outline Drawing AH2 XXXX Alpha - Numeric Lot Code Land Pattern Mounting Configuration WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: [email protected] • Web site: www.wj.com February 2004