AA230-24 ALPHA | Alldatasheet

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Technical content

Features

I Attenuation in 4 dB steps to 28 dB with High Accuracy I Low Cost SOIC-14 Plastic Package I Low DC Power Consumption AA230-24 (Previously AD230-24)* PIN 14 0.050 (1.27 mm) BSC PIN 1 PIN 1 INDICATOR 0.158 (4.01 mm) 0.150 (3.81 mm) 0.050 (1.27 mm) 0.016 (0.40 mm) 0.244 (6.20 mm) 0.228 (5.80 mm) 0.020 (0.51 mm) 0.013 (0.33 mm) 0.344 (8.75 mm) 0.337 (8.55 mm) 0.068 (1.73 mm) MAX. 0.010 (0.25 mm) 0.004 (0.10 mm) 0.158 (4.00 mm) 0.150 (3.80 mm) 0.049 (1.24 mm) 0.016 (0.41 mm) 0.016 MAX. (0.41 mm) x 45˚ CHAMFER 0.0098 (0.25 mm) 0.0075 (0.19 mm) 8˚ MAX.

Description

The AD230-24 is an IC FET Digital Attenuator consisting of three monolithic attenuators with LSB of 4 dB and a total attenuation of 28 dB with all attenuators connected. Attenuators are switched with -5 and 0 V. The AD230-24 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. Operating Characteristics at 25°C (0, -5 V) Parameter1 Frequency2 Min. Typ. Max. Unit Insertion Loss3 DC–0.1 GHz 1.1 1.4 dB DC–0.5 GHz 1.2 1.5 dB DC–1.0 GHz 1.3 1.7 dB DC–2.0 GHz 1.9 2.3 dB Attenuation Range 28 dB Attenuation Accuracy4 DC–1.0 GHz ± (0.2 + 3% of dB Attenuation Setting in dB) DC–2.0 GHz ± (0.4 + 5% of dB Attenuation Setting in dB) VSWR (I/O) DC–2.0 GHz 1.3:1 1.5:1 Electrical Specifications at 25°C (0, -5 V) SOIC-14 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. *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 3 Bit Digital Attenuator 4 dB LSB DC–2 GHz AA230-24 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 10/99A 0.5 0.5 1.0 1.0 1.5 1.5 2.0 2.0 2.5 3.0 Frequency (GHz) Insertion Loss vs. Frequency dB 0.5 1.0 1.5 2.00 Frequency (GHz) Attenuation vs. Frequency (All States) dB 0.5 0.5 1.0 1.0 1.5 1.5 2.0 2.0 Frequency (GHz) VSWR vs. Frequency (All States) Typical Performance Data (0, -5 V) V6 V5 V4 V3 V2 V1 J1 GND GND GND GND GND GND 1 234567 14 13 12 11 10 9 8 16 dB 8 dB 4 dB Characteristic Value RF Input Power 2 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 Absolute Maximum Ratings Pin Out Note: Exceeding these parameters may cause irreversible damage. Truth Table V1 V2 V3 V4 V5 V6 Attenuation 4 dB 8 dB 16 dB J 1–J2 -5 0 -5 0 -5 0 Reference I.L. 0- 5- 50 - 50 4 d B -5 0 0 -5 -5 0 8 dB -5 0 -5 0 0 -5 16 dB 0 -5 0 -5 0 -5 28 dB