GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB Positive Control 0.5–2.0 GHz AA106-86 Features ■ Attenuation 0.5 dB Steps to 15.5 dB with High Accuracy ■ Single Positive Control (+3 to +5 V) for Each Bit MSOP-10 PIN 10 PIN 1 INDICATOR 0.118 (3.00 mm) ± 0.006 (0.15 mm) 0.193 (4.90 mm) ± 0.006 (0.15 mm) PIN 1 ■ Low DC Power Consumption 0.034 (0.86 mm) ± 0.004 (0.10 mm) ■ Miniature Low Cost MSOP-10 Plastic Package 0.118 (3.00 mm) ± 0.006 (0.15 mm) 0.0197 (0.500 mm) BSC 8˚–16˚ 0˚–6˚ Description The AA106-86 is a 5 bit, single positive control GaAs IC FET digital attenuator in a low cost MSOP-10 package.This attenuator has an LSB of 0.5 dB and a total attenuation of 15.5 dB. The attenuator requires external DC blocking capacitors, positive supply voltage (VS) and five individual bit control voltages (V1–V5). The AA106-86 is particularly suited where high attenuation accuracy, low insertion loss and low intermodulation products are required. Typical applications include cellular radio, wireless data, and wireless local loop gain level control circuits. 0.009 (0.23 mm) REF. 0.043 (1.09 mm) MAX. 0.022 (0.55 mm) ± 0.006 (0.15 mm) 0.006 (0.15 mm) MAX. 0.002 (0.05 mm) MIN. Electrical Specifications at 25°C (0, +3 V), (0, +5 V) Parameter1 Frequency Insertion Loss2 Typ. Max. Unit 0.5–1.0 GHz 1.0–2.0 GHz Min. 2.0 3.0 2.4 3.4 dB dB 15.5 dB 0.5–1.0 GHz ± (0.2 + 3% of Attenuation Setting in dB) ± (0.3 + 5% of Attenuation Setting in dB) dB Attenuation Range Attenuation Accuracy3 1.0–2.0 GHz VSWR (I/O) 0.5–2.0 GHz 1.5:1 2.0:1 Typ. Max. dB Operating Characteristics at 25°C (0, +5 V) Parameter Switching Characteristics4 Condition Frequency Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Min. Unit 150 300 70 ns ns mV Input Power for 1 dB Compression VS = +3 V VS = +5 V 0.9–2.0 GHz 0.9–2.0 GHz +21 +27 dBm dBm Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm VS = +3 V VS = +5 V 0.9–2.0 GHz 0.9–2.0 GHz +41 +45 dBm dBm Control Voltages 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. Insertion loss changes by 0.003 dB/°C. 3. Attenuation referenced to insertion loss. 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. 10/99A 1 GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB Positive Control 0.5–2.0 GHz AA106-86 Typical Performance Data (0, +5 V) 0 2.0 8 dB Ins. Loss 1.8 -1.0 -1.5 J1–J2 VSWR Insertion Loss (dB) -0.5 -2.0 -2.5 -3.0 0.5 dB 1.6 15.5 dB 1.4 1.2 -3.5 4 dB -4.0 1.0 0.5 1.0 1.5 2.0 2.5 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Insertion Loss vs. Frequency VSWR vs. Frequency 30 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 8 dB 0.5 dB 2 dB 1 dB 4 dB 15.5 dB 0 0.5 1.0 25 15.5 dB 20 15 8 dB 10 4 dB 5 0.5 dB 0 -5 2 dB 1 dB -10 1.5 2.0 0 2.5 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency Attenuation Phase Accuracy vs. Frequency Truth Table Pin Out V2 V3 V4 V5 J1 Reference I.L. V2 VHigh VHigh VHigh VHigh 0 0.5 dB V3 VHigh VHigh VHigh 0 VHigh 1 dB V4 V5 VHigh 2 dB VHigh 0 VHigh VHigh VHigh 4 dB 0 VHigh VHigh VHigh VHigh 8 dB 0 0 0 0 0 15.5 dB Max. Atten. 1 dB GND GND GND 6 VHigh 2 dB 7 0 4 dB 10 VHigh V1 1 VHigh 2 0.5 dB VHigh 3 1 dB VHigh 4 2 dB VHigh 8 4 dB VHigh CBL 8 dB 9 8 dB Attenuation J1–J2 5 V1 VHigh = +3 to +5 V (VS = VHigh ± 0.2 V). 2 0 Frequency (GHz) Deviation from Nominal Insertion Phase (Deg.) Deviation from Nominal Attenuation (dB) 0 VHigh 1 dB 2 dB 0.5 dB 10 kΩ CBL J2 VS DC blocking capacitors (CBL) and biasing resistor must be supplied externally for positive voltage operation. CBL = 47 pF for operation >500 MHz. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/99A 2.5 GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB Positive Control 0.5–2.0 GHz AA106-86 Typical Performance Data (0, +3 V) 0 2.0 1.8 -1.0 -1.5 VSWR Insertion Loss (dB) Ins. Loss 0.5 dB 8 dB -0.5 -2.0 J1–J2 -2.5 -3.0 1 dB 2 dB 1.6 15.5 dB 1.4 1.2 -3.5 4 dB 1.0 -4.0 0.5 1.0 1.5 2.0 0 2.5 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency VSWR vs. Frequency 30 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 8 dB 0.5 dB Deviation from Nominal Insertion Phase (Deg.) Deviation from Nominal Attenuation (dB) 0 2 dB 1 dB 4 dB 15.5 dB 25 15.5 dB 20 15 8 dB 10 4 dB 5 0 2 dB 0.5 dB -5 1 dB -10 0 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency Attenuation Phase Accuracy vs. Frequency Absolute Maximum Ratings Characteristic RF Input Power Value 1 W > 500 MHz 0/8 V 0.5 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. 10/99A 3