AA280

AA280-25 ALPHA | Alldatasheet

Document overview

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Technical content

Features

I Attenuation 0.5 dB Steps to 15.5 dB with High Accuracy I Low DC Power Consumption I Low Cost SOIC-16 Plastic Package SOIC-16 AA280-25 (Previously AD280-25)* 0.158 (4.00 mm) 0.150 (3.80 mm) 0.068 (1.73 mm) MAX. 0.244 (6.20 mm) 0.228 (5.80 mm) 0.049 (1.24 mm) 0.016 (0.41 mm) 0.016 MAX. (0.41 mm) x 45˚ CHAMFER 0.020 (0.51 mm) 0.013 (0.33 mm) 0.050 (1.27 mm) BSCPIN 16 PIN 1 PIN 1 INDICATOR 0.394 (10.00 mm) 0.386 (9.80 mm) 0.010 (0.25 mm) 0.004 (0.10 mm) 0.0098 (0.25 mm) 0.0075 (0.19 mm) 8˚ MAX.

Description

The AD280-25 is a 5 bit, GaAs IC FET digital attenuator in a low cost SOIC-16 package. This attenuator has an LSB of 0.5 dB and a total attenuation of 15.5 dB. The AD280-25 is particularly suited where high attenuation accuracy, low insertion loss and low intermodulation products are required.Typical applications include cellular radio, wireless data, wireless local loop and other gain level control circuits. Parameter1 Condition Frequency 2 Min. Typ. Max. Unit Insertion Loss3 DC–0.5 GHz 1.1 1.3 dB DC–1.0 GHz 1.4 1.7 dB DC–2.0 GHz 1.7 2.0 dB Attenuation Range 15.5 dB Attenuation Accuracy3 DC–1.0 GHz ± (0.2 + 3% of Attenuation Setting in dB) dB DC–2.0 GHz ± (0.4 + 3% of Attenuation Setting in dB) dB VSWR (I/O)4 DC–2.0 GHz 1.4:1 1.8:1 Switching Characteristics5 Rise, Fall (10/90% or 90%/10% RF) 15 nS On, Off (50% CTL to 90%/10% RF) 25 nS Video Feedthru 25 mV Input Power for 1 dB Compression 0.5–2.0 GHz +24 +29 dBm

0.05 GHz +17 +22 dBm

Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm 0.5–2.0 GHz +44 +50 dBm

0.05 GHz +35 +40 dBm

Control Voltages V Low = 0 to 0.2 V @ 20 µA Max. VHigh = -5 V @ 300 µA Max. Electrical Specifications at -40°C to +85°C (0, -5 V) 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. DC = 300 kHz. 3. Attenuation referenced to insertion loss. 4. Input/Output 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. *Due to conflict with another company’s product numbering system, Alpha’s attenuator products starting with the letters “AD” are being changed to “AA”.

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC–2 GHz AA280-25 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/00A Insertion Loss (dB) Frequency (GHz) Insertion Loss vs. Frequency 0 0.5 1.0 1.5 2.0 -2.00 -1.75 -1.50 -1.25 -1.00 -0.75 -0.50 +25˚C +85˚C -40˚C IP3 (dBm) Attenuation (dB) IP3 vs. Attenuation and Temperature 0123456789 10 11 12 13 14 15 +25˚C +85˚C -40˚C VSWR Frequency (GHz) VSWR vs. Frequency (25˚C) 0 0.5 1.0 1.5 2.0 1.0 1.1 1.2 1.3 1.4 1.5 Ins. Loss0.5 dB1 dB 2 dB4 dB 8 dB 15.5 dB VSWR Frequency (GHz) VSWR vs. Frequency (85˚C) 0 0.5 1.0 1.5 2.0 1.0 1.1 1.2 1.3 1.4 1.5 Ins. Loss0.5 dB 1 dB 2 dB4 dB 8 dB15.5 dB VSWR Frequency (GHz) VSWR vs. Frequency (-40˚C) 0 0.5 1.0 1.5 2.0 1.0 1.1 1.2 1.3 1.4 1.5 Ins. Loss0.5 dB 1 dB 2 dB 4 dB8 dB15.5 dB Typical Performance Data (0, -5 V) Compression Point vs. Attenuation, Voltage, and Temperature Attenuation Control Input Power @ 1 dB Compression State Voltage (V) +25°C (dBm) +85 °C (dBm) -40 °C (dBm) Ins. Loss -5 28.30 28.10 29.10 0.5 dB -5 28.50 28.30 29.40 1.0 dB -5 28.70 28.70 29.60 2.0 dB -5 28.40 28.30 29.10 4.0 dB -5 32.90 32.90 33.90 8.0 dB -5 36.80 36.80 36.80 15.5 dB -5 32.70 32.10 32.80

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC –2 GHz AA280-25 3 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/00A Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (25˚C) 0 0.5 1.0 1.5 2.0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB 1 dB 2 dB4 dB8 dB 15.5 dB Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (85˚C) 0 0.5 1.0 1.5 2.0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB1 dB 2 dB4 dB8 dB 15.5 dB Deviation from Nominal Insertion Phase (Deg.) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (25˚C) 0 0.5 1.0 1.5 2.0 0.5 dB1 dB 2 dB 4 dB 8 dB 15.5 dB Deviation from Nominal Insertion Phase (Deg.) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (85˚C) 0 0.5 1.0 1.5 2.0 0.5 dB1 dB2 dB 4 dB 8 dB 15.5 dB Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (-40˚C) 0 0.5 1.0 1.5 2.0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB 1 dB 2 dB4 dB8 dB 15.5 dB Deviation from Nominal Insertion Phase (Deg.) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (-40˚C) 0 0.5 1.0 1.5 2.0 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC –2 GHz AA280-25 4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/00A Insertion Loss (dB) Frequency (GHz) Insertion Loss vs. Frequency 0 0.5 1.0 1.5 2.0 -2.00 -1.75 -1.50 -1.25 -1.00 -0.75 -0.50 +25˚C 85˚C -40˚C VSWR vs. Frequency (25˚C) VSWR Frequency (GHz) 0 0.5 1.0 1.5 2.0 1.0 1.1 1.2 1.3 1.4 1.5 Ins. Loss0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (25˚C) 0 0.5 1.0 1.5 2.0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB 1 dB 2 dB4 dB8 dB 15.5 dB Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (85˚C) 0 0.5 1.0 1.5 2.0 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB 1 dB 2 dB4 dB8 dB 15.5 dB Deviation from Nominal Insertion Phase (Deg.) Frequency (GHz) Attenuation Phase Accuracy vs. Frequency (25˚C) 0 0.5 1.0 1.5 2.0 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB Deviation from Nominal Attenuation (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency (-40˚C) 0 0.5 1.0 1.5 2.0 -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 0.5 dB 1 dB 2 dB4 dB8 dB 15.5 dB Typical Performance Data (0, -3 V)

GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC –2 GHz AA280-25 5 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/00A Truth Table V8 V7 V6 V5 V4 V3 V2 V1 J1 GND GND GND GND GND GND J 2 12 3 4 5 6 7 8 16 15 14 13 12 11 10 9 8 dB 4 dB 2 dB 1 dB 0.5 dB Characteristic Value RF Input Power 2.0 W > 500 MHz 0/-8 V

0.5 W > 50 MHz 0/-8 V

Control Voltage +0.2 V, -8 V Operating Temperature -40 °C to +85°C Storage Temperature -65 °C to +150°C ΘJC 85°C/W Absolute Maximum Ratings Pin Out Note: Exceeding these ratings may cause irreversible damage. V1 V2 V3 V4 V5 V6 V7 V8 0.5 dB 1 dB 2 dB 4 dB 8 dB Bit Bit Bit Bit Bit -5 -5 -5 0 -5 0 -5 0 Reference I.L. 0 -5 -5 0 -5 0 -5 0 0.5 dB -5 0 -5 0 -5 0 -5 0 1 dB -5 -5 0 -5 -5 0 -5 0 2 dB -5 -5 -5 0 0 -5 -5 0 4 dB -5 -5 -5 0 -5 0 0 -5 8 dB 0 0 0 -5 0 -5 0 -5 15.5 dB Max. Atten. Attenuation J1–J2 IP3 (dBm) Attenuation (dB) IP3 vs. Attenuation and Temperature 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 +25˚C +85˚C -40˚C Compression Point vs. Attenuation, Voltage, and Temperature Attenuation Control Input Power @ 1 dB Compression State Voltage (V) +25°C (dBm) +85°C (dBm) -40 °C (dBm) Ins. Loss -3 22.70 23.30 24.20 0.5 dB -3 23.50 24.20 25.10 1.0 dB -3 24.60 25.00 25.90 2.0 dB -3 22.90 23.40 24.30 4.0 dB -3 31.60 31.80 33.10 8.0 dB -3 31.00 28.70 26.40 15.5 dB -3 25.00 24.40 25.00