Preliminary GaAs IC 6 Bit Digital Attenuator with Driver 0.5 dB LSB Positive Control DC–1 GHz AA113-310 Features ■ Attenuation 0.5 dB Steps to 31.5 dB With High Accuracy ■ Single Positive Control (+5 V) for Each Bit MLF 5 x 5 (-310) 0.197 (5.00 mm) BSC 0.039 (1.00 mm) MAX. PIN 1 0.187 0.001 INDICATOR (4.75 mm) BSC (0.025 mm) 32 1 0.197 (5.00 mm) BSC 0.187 (4.75 mm) BSC ■ Low DC Power Consumption ■ CMOS Integrated Silicon Driver SEATING PLANE 12˚ MAX. ■ Designed for Use at IF Frequencies 0.122 (3.10 mm) ± 0.006 (0.15 mm) 32 1 Description The AA113-310 is a 6 bit, single positive control GaAs IC FET digital attenuator with driver. It is particularly suited at IF frequencies where high attenuation accuracy, low insertion loss and low intermodulation products are required. Typical applications include base station, wireless data, broadband and wireless local loop gain control circuits. 0.122 (3.10 mm) ± 0.006 (0.15 mm) 0.138 (3.50 mm) REF. 0.019 (0.50 mm) BSC 0.138 (3.50 mm) REF. Electrical Specifications at 25°C (0, +5 V) Parameter1 Frequency Insertion Loss2 Typ. Max. Unit DC–0.5 GHz DC–1.0 GHz Min. 1.5 1.8 1.8 2.2 dB dB DC–0.5 GHz ± (0.2 + 2% of Attenuation Setting in dB) ± (0.25 + 3% of Attenuation Setting in dB) Attenuation Range 31.5 Attenuation Accuracy3 DC–1.0 GHz VSWR (I/O)4 DC–1.0 GHz dB 1.4:1 1.6:1 Typ. Max. dB dB Operating Characteristics at 25°C (0, +5 V) Parameter Condition Frequency Switching Characteristics5 Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression VCC = +5 V Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm VCC = +5 V Supply Voltage VCC = 5 V @ 700 µA Typ. Control Voltages CTL05, CTL1, CTL2, CTL4, CTL8, CTL16, Low = 0 to 0.8 V @ 20 µA Typ. CTL05, CTL2, CTL4, CTL8, CTL16, High = 3.5 to 5.0 V @ 20 µA Typ. 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. Min. Unit 30 50 50 ns ns mV 0.5–1.0 GHz 0.05 GHz +29 +22 dBm dBm 0.5–1.0 GHz 0.05 GHz +48 +36 dBm dBm 4. Input/output. 5. 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. 4/01A 1 GaAs IC 6 Bit Digital Attenuator with Driver 0.5 dB LSB Positive Control DC–1 GHz AA113-310 Typical Performance Data (VCC = +5 V) 1.5 -0.50 -0.75 Deviation (dB) S21 (dB) -1.00 -1.25 -1.50 -1.75 1.0 31.5 dB 0.5 0 -2.00 4 dB -2.25 2 dB 8 dB 16 dB -0.5 -2.50 0 0.5 1.0 1.5 0 2.0 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency 1.8 1.8 16 dB 1.7 1.7 1.6 1.6 Ref. Coeff 1.5 VSWR VSWR 1 dB 0.5 dB 8 dB 1.4 1 dB 4 dB 1.3 2 dB 1.2 16 dB 1.5 8 dB 1.4 2 dB 31.5 dB 1.3 1.2 31.5 dB 0.5 dB 1.1 Ins. Loss 1.0 0 0.5 1.0 1 dB 1.0 1.5 2.0 4 dB 0.5 dB 1.1 0 0.5 Ins. Loss 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) Input VSWR vs. Frequency Output VSWR vs. Frequency Surface Mount Land Pattern Absolute Maximum Ratings 5 x 5 mm MLF 32 Lead 0.020 (0.50 mm) Characteristic RF Input Power 0.013 (0.33 mm) 0.020 (0.50 mm) Supply Voltage Control Voltage1 0.122 (3.10 mm) SQ. Value 2 W > 500 MHz, 0/6 V 0.5 W > 50 MHz, 0/6 V 6V -0.2 V, +6 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C ΘJC 85°C/W Note: Exceeding these ratings may cause irreversible damage. 1. Control voltage must not exceed supply voltage. 0.020 (0.50 mm) 0.020 (0.50 mm) Dimensions in inches (mm). 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 4/01A GaAs IC 6 Bit Digital Attenuator with Driver 0.5 dB LSB Positive Control DC–1 GHz CTL05 CTL1 CTL2 CTL4 CTL8 CTL16 Attenuation J1–J2 0 0 0 0 0 0 Ins. Loss 1 0 0 0 0 0 0.5 dB 0 1 0 0 0 0 1 dB 0 0 1 0 0 0 2 dB 0 0 0 1 0 0 4 dB 0 0 0 0 1 0 8 dB 0 0 0 0 0 1 16 dB 1 1 1 1 1 1 31.5 dB Pin 32 Pin 1 GND GND GND GND J1 GND GND GND “0” = 0 to 0.5 V (VCC = 5 V). “1” = 3.5 to 5 V (VCC = 5 V). CTL05 CLT1 CTL2 CTL4 CTL8 CTL16 VSS C2 0.01 µF Pin Out (Negative Voltage Holding Capacitor) 0.025 µF (Charge Pump Capacitor) C1 VCC GND 0.01 µF GND J2 GND (Power Supply GND Bypass Capacitor) GND GND GND GND GND GND GND GND GND Truth Table AA113-310 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 4/01A 3