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| GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz AA110-85 Features Attenuation 1 dB Steps to 31 dB With High Accuracy Single Positive Control (+3 V or +5 V) for Each Bit Low DC Power Consumption CMOS Integrated Silicon Driver Designed for Use at IF Frequencies at Input Power Levels > -10 dBm 0.069 (1.75 mm) 0.004 (0.10 mm) SSOP-20 PIN 20 0.209 (5.30 mm) 0.012 (0.30 mm) 0.307 (7.80 mm) 0.016 (0.307 mm) PIN 1 INDICATOR PIN 1 0.283 (7.20 mm) 0.012 (0.30 mm) 0.0256 0.078 (0.65 mm) (2.00 mm) BSC MAX. 0.010 (0.25 mm) 0.004 (0.090 mm) 8 MAX. Description The AA110-85 is a 5 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. For low power applications (< -10 dBm) see part number AA117-85. 0.012 (0.30 mm) REF. 0.008 (0.20 mm) MAX. 0.002 (0.05 mm) MIN. 0.030 (0.75 mm) 0.008 (0.10 mm) Electrical Specifications at -40C to +85C (VCC = +5 V) Parameter1 Insertion Loss2 Condition Frequency DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz VSWR (I/O)4 Switching Characteristics5 Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru VCC = +5 V For Two-tone Input Power +5 dBm VCC = +5 V VCC = 5 V @ 750 A Typ., 1 mA Max. CTL1, CTL2, CTL4, CTL8, CTL16, Low = 0 to 0.8 V @ 20 A Typ. CTL1, CTL2, CTL4, CTL8, CTL16, High = 3.0 to 5.0 V @ 20 A Typ. 4. Input/output. 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. Min. Typ. 1.4 1.7 2.2 31 Max. 1.7 2.1 2.6 Unit dB dB dB dB dB dB dB ns ns mV dBm dBm dBm dBm Attenuation Range Attenuation Accuracy3 (0.2 + 2% of Attenuation Setting in dB) (0.25 + 3% of Attenuation Setting in dB) (0.4 + 6% of Attenuation Setting in dB) 1.5:1 15 50 50 1.8:1 DC-2.0 GHz Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) Supply Voltage Control Voltages 0.5-2.0 GHz 0.05 GHz 0.5-2.0 GHz 0.05 GHz +22 +16 +40 +28 +27 +20 +46 +34 1. All measurements made in a 50 system, unless otherwise specified. 2. Insertion loss changes by 0.003 dB/C. 3. Attenuation referenced to insertion loss. Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 2/02A 1 GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz AA110-85 Typical Performance Data (VCC = +5 V) -0.5 -0.7 -0.9 -1.1 -1.5 -1.7 -1.9 -2.1 -2.3 -2.5 0 0.5 1.0 1.5 2.0 1.0 0 0.5 +85C +25C -40C -1.3 1.6 1.5 1.4 4 dB 16 dB 8 dB Insertion Loss (dB) VSWR 1.3 1.2 2 dB 1.1 31 dB 1.0 1.5 2.0 Ins. Loss 1 dB Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 40 38 +25C 1.6 1.5 1.4 VSWR vs. Frequency (25C) IP3 (dBm) 36 8 dB 16 dB VSWR 34 32 30 +85C 28 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 -40C 1.3 2 dB 1.2 Ins. Loss 1.1 4 dB 1 dB 31 dB 1.0 0 0.5 1.0 1.5 2.0 Atenuation (dB) Frequency (GHz) IP3 vs. Attenuation and Temperature, Main Bits (50 MHz) VCC = +5 V VSWR vs. Frequency (85C) Compression Point vs. Attenuation, Voltage, and Temperature VSWR Input Power @ 1 dB Compression Attenuation Control State Voltage (V) +25C (dBm) +85C (dBm) -40C (dBm) Ins. Loss 5 17.2 17.3 19.9 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Frequency = 50 MHz. 1.6 1.5 16 dB 1.4 4 dB 1.3 1.2 1.1 1.0 0 0.5 1.0 1.5 2.0 1 dB Ins. Loss 8 dB 2 dB 31 dB 5 5 5 5 5 5 18.1 19.3 16.9 21.3 18.6 21.4 18.2 19.5 16.9 21.6 17.8 21.1 17.8 19.2 16.8 22.4 18.5 21.3 Frequency (GHz) VSWR vs. Frequency (-40C) 2 Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 2/02A GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz AA110-85 1.0 60 Deviation from Nominal Attenuation (dB) 0.5 0 -0.5 -1.0 -1.5 0 0.5 Deviation from Nominal Insertion Phase (Deg.) 8 dB 16 dB 4 dB 50 40 30 20 10 0 -10 1 dB 0 0.5 1.0 2 dB 1.5 8 dB 31 dB 16 dB 1 dB 2 dB 31 dB 4 dB 2.0 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency (25C) Attenuation Phase Accuracy vs. Frequency (25C) 1.0 60 Deviation from Nominal Attenuation (dB) 0.5 0 Deviation from Nominal Insertion Phase (Deg.) 8 dB 16 dB 4 dB 50 31 dB 40 30 20 8 dB 10 0 1 dB -10 2 dB 1.5 4 dB 2.0 16 dB 1 dB -0.5 -1.0 -1.5 0 0.5 1.0 2 dB 31 dB 1.5 2.0 0 0.5 1.0 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency (85C) Attenuation Phase Accuracy vs. Frequency (85C) 60 1.0 Deviation from Nominal Attenuation (dB) 0.5 0 Deviation from Nominal Insertion Phase (Deg.) 16 dB 8 dB 50 40 30 16 dB 20 10 0 1 dB 2 dB 1.5 4dB 2.0 -10 8 dB 31 dB 1 dB -0.5 -1.0 4 dB 2 dB 31 dB -1.5 0 0.5 1.0 1.5 2.0 0 0.5 1.0 Frequency (GHz) Frequency (GHz) Attenuation Accuracy vs. Frequency (-40C) Attenuation Phase Accuracy vs. Frequency (-40C) Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 2/02A 3 GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz AA110-85 Typical Performance Data (VCC = +3 V) -0.5 1.0 Deviation from Nominal Attenuation (dB) -0.7 Insertion Loss (dB) -0.9 -1.1 -1.3 -1.5 -1.7 -1.9 -2.1 -2.3 -2.5 0 0.5 1.0 1.5 2.0 +85C Ins. Loss -40C 0.5 0 8 dB 16 dB 4 dB 1 dB -0.5 -1.0 -1.5 0 0.5 1.0 2 dB 31 dB 1.5 2.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Attenuation Accuracy vs. Frequency (25C) 1.6 1.0 Deviation from Nominal Attenuation (dB) 1.5 4 dB 1.4 0.5 0 8 dB 16 dB 4 dB VSWR 16 dB 8 dB 1.3 1.2 Ins. Loss 1.1 2 dB 1.0 0 0.5 31 dB 1.0 1.5 2.0 1 dB 1 dB -0.5 -1.0 2 dB 31 dB -1.5 0 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) VSWR vs. Frequency (25C) Attenuation Accuracy vs. Frequency (85C) 60 1.0 Deviation from Nominal Insertion Phase (Deg.) 50 40 30 20 10 0 1 dB -10 0 0.5 1.0 1.5 2.0 2 dB 8 dB 31 dB Deviation from Nominal Attenuation (dB) 0.5 0 1 dB -0.5 -1.0 8 dB 16 dB 4 dB 2 dB 16 dB 4 dB -1.5 0 0.5 1.0 1.5 31 dB 2.0 Frequency (GHz) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (25C) 4 Attenuation Accuracy vs. Frequency (-40C) Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 2/02A GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC-2 GHz AA110-85 Compression Point vs. Attenuation, Voltage, and Temperature Input Power @ 1 dB Compression Attenuation Control State Voltage (V) +25C (dBm) +85C (dBm) -40C (dBm) Ins. Loss 3 16.6 16.6 16.5 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Frequency = 50 MHz. Absolute Maximum Ratings Characteristic RF Input Power Supply Voltage Control Voltage1 Operating Temperature Storage Temperature JC Value 2 W > 500 MHz, 0/6 V 0.5 W > 50 MHz, 0/6 V 6V -0.2 V, +6 V -40C to +85C -65C to +150C 85C/W 3 3 3 3 3 3 17.5 18.9 16.3 20.6 15.5 20.2 17.5 19 16.6 21.1 15.1 19.9 17.5 18.8 16.3 21.8 16.2 20.1 Note: Exceeding these ratings may cause irreversible damage. 1. Control voltage must not exceed supply voltage. Truth Table CTL1 0 1 0 0 0 0 1 CTL2 0 0 1 0 0 0 1 CTL4 0 0 0 1 0 0 1 CTL8 0 0 0 0 1 0 1 CTL16 0 0 0 0 0 1 1 Attenuation J1-J2 Ins. Loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Pin Out J1 GND GND GND GND GND GND GND GND J2 1 dB 2 3 N/C CTL1 CTL2 CTL4 CTL8 (Negative Voltage CTL16 Holding Capacitor) VSS 0.01 F C2 0.025 F 20 1 19 18 2 dB 17 4 16 Driver 5 4 dB 6 7 15 14 8 dB 8 9 10 13 12 16 dB C1 VCC (Charge Pump Capacitor) 0.01 F (Power Supply Bypass Capacitor) 11 "0" = 0 to 0.8 V (VCC = 5 V). "1" = 3 to 5 V (VCC = 5 V). Application Information The on chip charge pump oscillates at approximately 600 KHz, which may create noise in the user's circuit. When the input level to the attenuator is low, < -10 dBm, the signal to noise ratio starts to degrade. For many applications, input power levels are typically in the -20 dBm to -30 dBm range. At these input levels there is insufficient signal to noise. Skyworks has developed a solution to this problem. Part number AA117-85 has the same attenuation range as the AA110-85, but the charge pump oscillator has been turned off. The user can still control the part with 0/+V, however a negative VSS voltage is required. See AA117-85 data sheet for further information. Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 2/02A 5 |
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