AA100-59 ALPHA | Alldatasheet
Document overview
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Technical content
Features
■ Attenuation in 4 dB Steps to 28 dB with High Accuracy ■ Single Positive Control Voltage for Each Bit ■ +3 V to +5 V Operation ■ Small Low Cost MSOP-8 Plastic Package MSOP-8 AA100-59 0.012 (0.30 mm)PIN 1 PIN 1 INDICATOR + 0.006 (0.15 mm) 7.0˚ TYP .0.038 (0.95 mm) 0.030 (0.75 mm) 0.017 (0.43 mm) 8.0˚ MAX. 0.028 (0.70 mm) 0.016 (0.40 mm) 0.007 (0.18 mm) ± 0.005 (0.12 mm) 0.006 (0.15 mm) 0.002 (0.05 mm) - 0.002 (0.05 mm) 0.0256 (0.65 mm) TYP . 0.118 (3.00 mm) ± 0.004 (0.1 mm) SQ. 0.193 (4.90 mm) REF .
Description
The AA100-59 is a 3 bit, single positive control, 4 dB step GaAs IC FET digital attenuator in a low cost MSOP-8 plastic package. For positive operation external DC blocking capacitors are required on all RF ports. The AA100-59 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, +3 V) Parameter1 Frequency Min. Typ. Max. Unit Insertion Loss2 0.75–2.0 GHz 1.8 2.1 dB Attenuation Range 0.75–2.0 GHz 28 dB Attenuation Accuracy3 0.75–1.0 GHz ± (0.2 + 3% of dB Attenuation Setting in dB) Attenuation Setting in dB) VSWR (I/O) 0.75–2.0 GHz 1.5:1 2.0:1 Electrical Specifications at 25°C (0, +3 V) 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. 4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. Preliminary
GaAs IC 3 Bit Digital Attenuator 4 dB LSB Positive Control 0.75–2 GHz AA100-59 2 Alpha Industries, Inc.[781] 935-5150 • Fax [617]824-4579• Emailsales@alphaind.com • www .alphaind.com Specifications subject to change without notice.3/99A Frequency (G H z) Insertion Loss vs. Frequency dB Frequency (G H z) A ttenuation vs. Frequency (A ll States) dB 0.5 0.5 1.0 1.0 1.5 1.5 2.0 2.0 Frequency (G H z) VSW R vs. Frequency (A ll States) Typical Performance Data (0, +3 V) 8765 G N D C BL VS 10 kΩ C BL G N D G N D dB dB dB 1234 Characteristic Value RF Input Pow er 1 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 VHigh = +3 to +5 V (VS = VHigh ± 0.2 V). V1 V2 V3 Attenuation 16 dB 4 dB 8 dB J1–J2 VHigh VHigh VHigh Ins.Loss VHigh 0 VHigh 4 dB VHigh VHigh 0 8 dB VHigh 0 0 12 dB
0 VHigh VHigh 16 dB
0 VHigh 0 24 dB
DC blocking capacitors (CBL) and biasing resistor must be supplied externally for positive operation. C BL = 100 pF for operation >.75 GHz. Note:Exceeding these parameters may cause irreversible damage.