GaAs IC 4 Bit Digital Attenuator With Driver 1 dB LSB DC–2 GHz AK002D4-24 Features SOIC-14 ■ Attenuation in 1 dB Steps to 15 dB PIN 14 ■ Integral Driver ±5 V Supply Voltages ■ Low Cost SOIC-14 Plastic Package Description 0.050 (1.27 mm) BSC 0.050 (1.27 mm) 0.016 (0.40 mm) 0.244 (6.20 mm) 0.228 (5.80 mm) 0.158 (4.01 mm) 0.150 (3.81 mm) PIN 1 INDICATOR The AK002D4-24 is an IC FET digital attenuator consisting of four monolithic attenuators with an LSB of 1 dB and a total attenuation of 15 dB with all attenuators connected. The device has integral drivers for each bit requiring less than 4 mA per bit. DC supply voltages of ±5 V are required. The attenuator is packaged in a 14 lead plastic SOIC. 0.020 (0.51 mm) 0.013 (0.33 mm) PIN 1 0.068 (1.73 mm) MAX. 0.049 (1.24 mm) 0.016 (0.41 mm) 0.016 MAX. (0.41 mm) x 45˚ CHAMFER 8˚ MAX. 0.344 (8.75 mm) 0.337 (8.55 mm) 0.010 (0.25 mm) 0.0098 (0.25 mm) 0.004 (0.10 mm) 0.0075 (0.19 mm) 0.158 (4.00 mm) 0.150 (3.80 mm) Electrical Specifications at 25°C (+5 V, -5 V) Parameter1 Frequency2 Typ. Max. Unit DC–0.5 GHz DC–1.0 GHz DC–2.0 GHz 2.0 2.5 3.7 2.5 3.0 4.0 dB dB dB Attenuation Accuracy Per Bit4 DC–2.0 GHz 10% or ±0.5 dB Whichever is Greater VSWR (I/O) DC–0.5 GHz DC–2.0 GHz 1.3:1 1.6:1 1.5:1 1.8:1 Typ. Max. Insertion Loss3 Min. dB Operating Characteristics at 25°C (+5 V, -5 V) Parameter Switching Characteristics5 Condition Frequency Min. Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression Unit 20 40 30 ns ns mV 0.50–2.0 GHz 0.05 GHz +24 +16 dBm dBm 0.50–2.0 GHz 0.05 GHz +37 +26 dBm dBm Intermodulation Intercept Point (IP3) For Two-tone Input Power +13 dBm Control Voltages VLow VHigh 0.0 4.5 0.2 5.0 V V Supply Voltages6,7 +5 V ± 0.20 V @ 4 mA Typ. -5 V ± 0.20 V @ 16 mA Typ. 4.8 -4.8 5.2 -5.2 V V 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. DC = 300 kHz. 3. Insertion loss changes by 0.003 dB/°C. 4. Attenuation referenced to insertion loss. 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. 6. Supply voltage and ground must be connected before control voltage is applied. Use of toggle switches or other similar components may produce voltage spikes which can cause irreversible damage to the device. 7. Current drain @ 85°C = 6 mA Typ. @ +5 V, 20 mA Typ. @ -5 V. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 3/99A 1 GaAs IC 4 Bit Digital Attenuator With Driver 1 dB LSB DC–2 GHz AK002D4-24 5 5 4 4 3 dB dB Typical Performance Data (+5 V, -5 V) +85˚C -40˚C 2 3 2 1 1 DC 1 2 DC 1 2 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 1, 2, 4 dB Bits vs. Frequency 16 2.2 15 1.9 14 dB 2.5 1.6 9 1.3 8 7 1.0 1 DC DC 2 1 2 Frequency (GHz) Frequency (GHz) VSWR vs. Frequency (All States) 8, 15 dB Bits vs. Frequency Absolute Maximum Ratings Characteristic Pin Out Value RF Input Power 0.5 W > 500 MHz 0.1 W @ 50 MHz Supply Voltage +6 V, -6 V Control Voltage -5 V +5 V GND 14 +6 V Operating Temperature 13 12 8 dB C1 C2 C3 C4 11 10 9 8 1 dB 2 dB 4 dB 0°C to +70°C Storage Temperature -65°C to +150°C ΘJC 30°C/W 1 Truth Table J1 C1 C2 C3 C4 8 dB 1 dB 2 dB 4 dB Attenuation J1–J2 0 0 0 1 Reference I.L. 0 1 0 1 1 dB 0 0 1 1 2 dB 0 0 0 0 4 dB 1 0 0 1 8 dB 1 1 1 0 15 dB 2 3 4 5 6 GND GND GND GND GND 7 J2 “0” = 0.0 to 0.2 V, “1” = 4.5 to 5.0 V. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 3/99A