GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz AA101-80 Features SSOP-16 ■ Attenuation 1 dB Steps to 31 dB with High Accuracy 0.197 (5.00 mm) 0.189 (4.80 mm) 0.025 (0.635 mm) TYP. ■ Single Positive Control (+3 to +5 V) for Each Bit PIN 16 0.244 (6.20 mm) 0.228 (5.80 mm) ■ Low DC Power Consumption PIN 1 ■ Small Low Cost SSOP-16 Plastic Package Description The AA101-80 is a 5 bit, single positive control GaAs IC FET digital attenuator in a low cost SSOP-16 package. This attenuator has an LSB of 1 dB and a total attenuation of 31 dB. The attenuator requires external DC blocking capacitors, positive supply voltage (VS) and five individual bit control voltages (V1–V5). The AA101-80 is particularly suited where high attenuation accuracy, low insertion loss and low intermodulation products are required. Typical applications include base station, wireless data, and wireless local loop gain level control circuits. 0.158 (4.00 mm) 0.150 (3.80 mm) 0.068 (1.73 mm) MAX. 0.0196 X 45˚ CHAMFER R 0.008 MIN. R 0.013/0.008 0.0098 (0.0075 mm) 5˚ -15˚ 0.010 (0.25 mm) TYP. 0.010 (0.25 mm) 0.004 (0.10 mm) 8˚ MAX. Electrical Specifications at -40°C to +85°C (0, +5 V) Parameter1 Condition Insertion Loss Frequency Min. 0.5–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz Attenuation Range 0.5–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz (I/O)3 Unit 2.4 3.0 3.3 dB dB dB Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression VS = +3 V VS = +5 V 0.5–2.5 GHz 0.5–2.5 GHz Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm VS = +3 V VS = +5 V 0.5–2.5 GHz 0.5–2.5 GHz dB ± (0.2 + 3% of Attenuation Setting in dB) ± (0.3 + 5% of Attenuation Setting in dB) ± (0.3 + 6% of Attenuation Setting in dB) 0.5–2.5 GHz Switching Characteristics4 Control Voltages Max. 2.0 2.6 2.9 31 Attenuation Accuracy2 VSWR Typ. 1.5:1 dB dB dB 2.2:1 100 300 70 ns ns mV +18 +23 +21 +27 dBm dBm +37 +39 +43 +45 dBm dBm VLow = 0 to 0.2 V @ 20 µA Max. VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max. VS = VHigh ± 0.2 V 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. Attenuation referenced to insertion loss. 3. Input/output. 4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/00A 1 GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz AA101-80 Typical Performance Data (0, +5 V) 2.50 -1.00 31 dB 2.25 -40˚C -1.75 8 dB 4 dB 2 dB 2.00 +85˚C -2.00 -2.25 +25˚C 1 dB 1.75 Ins. Loss 1.50 -2.50 1.25 -2.75 1.00 -3.00 0 0.5 1.0 1.5 2.0 2.5 3.0 0 58 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency VSWR vs. Frequency (25˚C) 60 2.50 31 dB -40˚C 2.25 56 16 dB +85˚C 54 2.00 52 VSWR IP3 (dBm) 16 dB -1.50 VSWR Insertion Loss (dB) -1.25 50 48 +25˚C 8 dB 2 dB 1 dB 4 dB 1.75 Ins. Loss 1.50 46 44 1.25 42 40 1.00 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 0.5 1.0 1.5 2.0 2.5 Attenuation (dB) Frequency (GHz) IP3 vs. Attenuation and Temperature (500 MHz) VSWR vs. Frequency (85˚C) Compression Point vs. Attenuation, Voltage, and Temperature 2.50 31 dB 2.25 1 5 29.3 29.5 29.7 2 5 28.7 28.9 29.0 4 5 34.5 34.3 34.6 8 5 27.4 27.4 27.7 16 5 27.9 27.6 28.2 31 5 27.7 25.2 28.4 16 dB 2.00 VSWR Input Power @ 1 dB Compression Attenuation Control State Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm) Ins. Loss 5 29.4 29.2 29.6 8 dB 2 dB 1 dB Ins. Loss 4 dB 1.75 1.50 1.25 1.00 0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) VSWR vs. Frequency (-40˚C) 2 3.0 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/00A 3.0 GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz 80 31 dB 0.75 Deviation from Nominal Insertion Phase (Deg.) Deviation from Nominal Attenuation (dB) 1.00 16 dB 0.50 8 dB 0.25 2 dB 4 dB 0 -0.25 1 dB -0.50 -0.75 60 50 40 31 dB 30 16 dB 20 8 dB 10 0 4 dB 1 dB 2 dB -20 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency (25˚C) Attenuation Phase Accuracy vs. Frequency (25˚C) 1.00 3.0 80 31 dB 0.75 Deviation from Nominal Insertion Phase (Deg.) Deviation from Nominal Attenuation (dB) 70 -10 -1.00 16 dB 0.50 8 dB 0.25 0 -0.25 1 dB 4 dB -0.50 2 dB -0.75 70 60 50 31 dB 40 30 16 dB 20 8 dB 10 4 dB 0 1 dB 2 dB -10 -1.00 -20 0 1.00 0.5 1.0 1.5 2.0 2.5 3.0 0 1.0 1.5 2.0 2.5 Frequency (GHz) Attenuation Accuracy vs. Frequency (85˚C) Attenuation Phase Accuracy vs. Frequency (85˚C) 31 dB 0.75 16 dB 0.50 8 dB 0.25 0 -0.25 0.5 Frequency (GHz) Deviation from Nominal Insertion Phase (Deg.) Deviation from Nominal Attenuation (dB) AA101-80 -0.50 4 dB 2 dB -0.75 1 dB 3.0 80 70 60 31 dB 50 40 30 16 dB 20 8 dB 10 0 4 dB -10 2 dB 1 dB 2.0 2.5 -20 -1.00 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency (-40˚C) Attenuation Phase Accuracy vs. Frequency (-40˚C) Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/00A 3.0 3 GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz AA101-80 Typical Performance Data (0, +3 V) 1.00 Insertion Loss (dB) -1.25 Deviation from Nominal Attenuation (dB) -1.00 +85˚C -1.50 -1.75 -2.00 +25˚C -2.25 -2.50 -40˚C 0 0.5 1.0 1.5 2.0 2.5 0 -0.25 4 dB -0.50 2 dB 1 dB 0 3.0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency (25˚C) 2.50 3.0 1.00 31 dB 16 dB 2.00 8 dB 4 dB 1.75 Deviation from Nominal Attenuation (dB) Ins. Loss 2.25 VSWR 8 dB 0.25 -1.00 -3.00 1 dB 2 dB 1.50 1.25 1.00 31 dB 0.75 16 dB 0.50 8 dB 0.25 4 dB 0 -0.25 -0.50 2 dB -0.75 1 dB -1.00 0 0.5 1.0 1.5 2.0 2.5 0 3.0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) VSWR vs. Frequency (25˚C) Attenuation Accuracy vs. Frequency (85˚C) 80 1.00 70 0.75 3.0 31 dB Deviation from Nominal Attenuation (dB) Deviation from Nominal Insertion Phase (Deg.) 16 dB 0.50 -0.75 -2.75 60 31 dB 50 40 30 16 dB 20 8 dB 10 0 -10 1 dB 2 dB 4 dB 16 dB 0.50 8 dB 0.25 4 dB 0 -0.25 2 dB -0.50 1 dB -0.75 -1.00 -20 0 4 31 dB 0.75 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (25˚C) Attenuation Accuracy vs. Frequency (-40˚C) Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/00A 3.0 GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz Compression Point vs. Attenuation, Voltage, and Temperature 60 58 +85˚C 56 Input Power @ 1 dB Compression Attenuation Control State Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm) Ins. Loss 3 23.1 23.3 24.3 IP3 (dBm) 54 52 -40˚C 50 1 3 23.5 23.3 24.2 2 3 22.7 22.7 23.7 4 3 33.8 33.2 33.8 42 8 3 31.7 31.7 22.7 40 16 3 20.2 20.5 21.4 31 3 21.9 20.6 23.6 48 46 +25˚C 44 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Attenuation (dB) IP3 vs. Attenuation and Temperature Pin Out CBL VHigh VHigh VHigh VHigh Reference I.L. VHigh VHigh VHigh VHigh 0 1 dB VHigh VHigh VHigh 0 VHigh 2 dB VHigh VHigh 0 VHigh VHigh 4 dB VHigh 0 VHigh VHigh VHigh 8 dB 0 VHigh VHigh VHigh VHigh 16 dB 0 0 0 0 31 dB Max. Atten. V2 V3 V4 8 dB 4 dB V5 GND 2 dB 1 dB GND GND GND GND GND GND 9 VHigh V1 11 10 1 dB 15 14 13 12 2 dB 16 dB J1 16 4 dB 8 8 dB GND 7 16 dB Attenuation J1–J2 GND 6 V5 5 V4 4 V3 3 V2 2 V1 1 Truth Table 0 AA101-80 CBL J2 VS 10 kΩ DC blocking capacitors (CBL) and biasing resistor must be supplied externally for positive voltage operation. CBL = 47 pF for operation >500 MHz. VHigh = +3 to +5 V (VS = VHigh ± 0.2 V). Absolute Maximum Ratings Characteristic RF Input Power Value 2 W > 500 MHz 0/8 V 0.75 W @ 50 MHz 0/8 V Supply Voltage +8 V Control Voltage -0.2 V, +8 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C Note: Exceeding these parameters may cause irreversible damage. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/00A 5