AA104-73

GaAs IC 1 Bit Digital Attenuator 32 dB 2.5 GHz AA104-73 Features s 1 Bit Attenuation of 32 dB DC–1 GHz, 27 dB 1–2 GHz, 24 dB 2–2.5 dB s Combine with AA260-85 or AA101-80 for 63 dB 6 Bit Solution s Tune with One Capacitor and/or Resistor to Desired Operating Frequency and Attenuation s Ideal for Both IF and RF Applications Including Cable, GSM, PCS, EDGE, 3G and ISM SOT-6 0.074 (1.90 mm REF.) PIN 6 PIN 1 INDICATOR PIN 1 0.126 (3.20 mm) 0.087 (2.20 mm) 0.071 (1.80 mm) 0.052 (1.30 mm) 0.020 (0.51 mm) 0.014 (0.350 mm) 0.057 (1.45 mm) 0.035 (0.90 mm) 0.037 (0.95 mm) REF. 0.012 (0.30 mm) TYP. 0.014 (0.26 mm) 0.004 (0.10 mm) 5.0˚ ± 1˚ 0.006 (0.15 mm) 0.000 (0.00 mm) 5.0˚ ± 1˚ Description The AA104-73 is a 1 bit, GaAs IC FET digital attenuator in a low cost SOT-6 package. This attenuator has up to 32 dB total attenuation.The attenuator requires two lines of voltage control. The AA104-73 is particularly suited where high attenuation accuracy, low insertion loss and low 0.122 (3.10 mm) 0.106 (2.70 mm) 0.022 (0.61 mm) 0.004 (0.10 mm) intermodulation products are required. Typical application is as a sixth bit value for the AA260-85 and AA101-80. A total attenuation of 63 dB in 1 dB steps can be obtained by combining the two attenuators. Electrical Specifications at -40 to 85°C (0, +3 V), (0, +5 V) Parameter1 Insertion Loss Frequency2 DC–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz DC–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz DC–0.5 GHz 0.85–0.95 GHz 1.7–2.0 GHz 2.0–2.5 GHz DC–2.5 GHz DC–2.5 GHz ± ± ± ± (0.4 (0.4 (0.5 (0.6 + + + + Min. Typ. 0.8 0.9 1.0 32 27 24 10% of Attenuation Setting in dB) 5% of Attenuation Setting in dB) 6% of Attenuation Setting in dB) 7% of Attenuation Setting in dB) 1.2:1 1.5:1 1.5:1 2.0:1 Max. 1.0 1.2 1.3 Unit dB dB dB dB dB dB dB dB dB dB Attenuation Range Attenuation Accuracy3, 4 VSWR (Insertion Loss State)5 VSWR (Attenuation State)5 Parameter Switching Characteristics6 Condition Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru VS = +3 V VS = +5 V For Two-tone Input Power +10 dBm VS = +3 V VS = +5 V Frequency Min. Typ. 50 100 25 Max. Unit ns ns mV dBm dBm dBm dBm Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) 0.5–2.5 GHz 0.5–2.5 GHz 0.5–2.5 GHz 0.5–2.5 GHz 14 18 36 38 +21 +23 +41 +44 Control Voltages VLow = 0 to 0.2 V @ 20 µA Max. VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max. 5. Input/output. In band. 6. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. 7. DC = 30 KHz. 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. Operates to DC when controlled with negative voltage, CBP not required. 3. Attenuation value set by CBP. 4. Attenuation referenced to insertion loss. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 5/00A 1 GaAs IC 1 Bit Digital Attenuator 32 dB 2.5 GHz AA104-73 Typical Performance Data at -40 to 85°C (0, +5 V) CBP = 12 pF, CBL = 47 pF 0 -27 Max Attenuation (dB) -0.25 -28 32 dB -40˚C -29 -30 -31 -32 32 dB 25˚C 32 dB 85˚C Insertion Loss (dB) -0.50 -0.75 -1.00 -1.25 -1.50 0.0 IL 25˚C IL -40˚C IL 85˚C 0.5 1.0 1.5 2.0 2.5 3.0 -33 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 2.0 1.8 S11 -40˚C 3.0 32 dB State vs. Frequency S11 -40˚C 2.5 S11 85˚C S11 25˚C 2.0 S22 -40˚C S22 85˚C 1.5 S22 25˚C 1.0 1.5 2.0 2.5 3.0 S22 25˚C 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 VSWR 1.4 1.2 S11 25˚C 1.0 0 0.5 S11 85˚C S22 85˚C Frequency (GHz) VSWR 1.6 S22 -40˚C Frequency (GHz) VSWR vs. Frequency Insertion Loss State VSWR vs. Frequency 32 dB State Compression Point vs. Voltage and Temperature Control Voltage (V) 3 3 3 5 5 5 Frequency: 500 MHz. IP3 vs. Voltage and Temperature 1 dB Compression 32 dB State (dBm) 16.5 15.0 14.0 22.5 22.5 22.5 Control Voltage (V) 3 3 3 5 5 5 Temperature (°C) -40 25 85 -40 25 85 IP3 @ +10 dBm each tone (dBm) 41 42 40 43 44 42 Temperature (°C) -40 25 85 -40 25 85 1 dB Compression Insertion Loss State (dBm) 21 21 21 22 22 22 Two tone input power: +10 dBm each tone. Tone frequencies: 500 and 501 MHz. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 5/00A GaAs IC 1 Bit Digital Attenuator 32 dB 2.5 GHz AA104-73 0 -5 2.0 2.2 pF 1.8 2.7 pF Attenuation (dB) -10 -15 2.7 pF -20 -25 3.3 pF -30 12 pF -35 0 0.5 1.0 1.5 2.0 2.5 1.0 0 0.5 1.0 1.2 VSWR 2.2 pF 1.6 1.4 Ins. Loss 12 pF 3.3 pF 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Attenuation vs. Frequency DC–2.5 GHz CBP = 2.2, 2.7, 3.3 and 12 pF -15.0 -17.5 2.0 VSWR vs. Frequency DC–2.5 GHz CBP = 2.2, 2.7, 3.3 and 12 pF 220 pF 1.8 1.6 1.4 1.2 Ins. Loss 1.0 1.75 2.00 2.25 2.50 0 0.1 0.2 0.3 0.4 0.5 Attenuation (dB) -20.0 -22.5 2.2 pF -25.0 -27.5 -30.0 1.50 3.3 pF 2.7 pF VSWR 1500 pF 1000 pF Frequency (GHz) Frequency (GHz) Attenuation vs. Frequency 1.5–2.5 GHz CBP = 2.2, 2.7, and 3.3 pF -20 CBL (pF) 220 pF -24 47 1000 pF -28 -32 1500 pF -36 -40 0 0.1 0.2 0.3 0.4 0.5 47 47 47 47 330 1500 10000 VSWR vs. Frequency DC–0.5 GHz CBP = 220, 1000, 1500 pF CBP (pF) 2.2 2.7 3.3 12 15 220 1000 1500 Operating Frequency (GHz) 2.00–2.30 1.80–2.00 1.60–1.80 0.90–1.05 0.80–0.90 0.20–0.35 0.07–0.20 0.015–0.25 Attenuation (dB) Frequency (GHz) Attenuation vs. Frequency DC–0.5 GHz CBP = 220, 1000, 1500 pF Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 5/00A 3 GaAs IC 1 Bit Digital Attenuator 32 dB 2.5 GHz AA104-73 Pin Out Positive Voltage Absolute Maximum Ratings Characteristic RF Input Power Value 1 W > 500 MHz 0/8 V 0.5 W @ 50 MHz 0/8 V +8 V -0.2 V, +8 V -40°C to +85°C -65°C to +150°C J1 CBL 32 V2 NC/GND V1 1 2 CBP 6 5 Supply Voltage Control Voltage Operating Temperature Storage Temperature RF GND J2 CBL CBL = 47 pF for frequencies >500 MHz. See Table on previous page for CBP value. See application notes APN2013 and APN2014 for 6 bit attenuator requirements. 3 4 Note: Exceeding these parameters may cause irreversible damage. Truth Table Positive Control V1 VHigh 0 VHigh = +3 to +5 V. V2 0 VHigh Attenuation J1–J2 Reference I.L. 32 dB Application: AA104-73 used as 1 Bit 20 dB Attenuator 25°C (0, +5 V) 2.50 J1 CBL 20 V2 1 2 CBP RBP 6 5 2.25 NC/GND 2.00 V1 VSWR RF GND J2 CBL CBL = 220 pF, CBP = 100 pF, RBP = 15 Ω, fC = 400 MHz with select values of CBP and RBP, center frequency and attenuation value respectively can be varied. 3 4 1.75 1.50 1.25 1.00 0 0.2 0.4 0.6 0.8 1.0 S22 25˚C S11 25˚C -15 -16 Max Attenuation (dB) -17 -18 -19 -20 -21 -22 -23 -24 -25 0 0.2 0.4 0.6 0.8 1.0 20 dB 25˚C Frequency (GHz) VSWR vs. Frequency 20 dB State Frequency (GHz) 20 dB State vs. Frequency CBP = 100 pF, CBL = 220 pF, RBP = 15 Ω 4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 5/00A