AA110-85 ALPHA | Alldatasheet

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Technical content

Features

I Attenuation 1 dB Steps to 31 dB With High Accuracy I Single Positive Control (+5 V) for Each Bit I Low DC Power Consumption I CMOS Integrated Silicon Driver I Designed for Use at IF Frequencies SSOP-20 AA110-85 0.012 (0.30 mm) REF. 0.0256 (0.65 mm) BSC0.069 (1.75 mm) ±0.004 (0.10 mm) 0.008 (0.20 mm) MAX. 0.002 (0.05 mm) MIN. 0.010 (0.25 mm) 0.004 (0.090 mm) 8˚ MAX. 0.030 (0.75 mm) ±0.008 (0.10 mm) 0.078 (2.00 mm) MAX. 0.283 (7.20 mm) ±0.012 (0.30 mm) PIN 20 PIN 1 0.209 (5.30 mm) ±0.012 (0.30 mm) 0.307 (7.80 mm) ±0.016 (0.307 mm) PIN 1 INDICATOR

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. Parameter1 Frequency Min. Typ. Max. Unit Insertion Loss2 DC –0.5 GHz 1.4 1.7 dB DC –1.0 GHz 1.7 2.1 dB DC –2.0 GHz 2.2 2.6 dB Attenuation Range 31 dB Attenuation Accuracy3 DC –0.5 GHz ± (0.2 + 2% of Attenuation Setting in dB) dB DC –1.0 GHz ± (0.25 + 3% of Attenuation Setting in dB) dB DC –2.0 GHz ± (0.4 + 6% of Attenuation Setting in dB) dB VSWR (I/O)4 DC –2.0 GHz 1.5:1 1.8:1 Electrical Specifications at 25°C (0, +5 V) Preliminary Parameter Condition Frequency Min. Typ. Max. Unit Switching Characteristics5 Rise, Fall (10/90% or 90/10% RF) 30 ns On, Off (50% CTL to 90/10% RF) 50 ns Video Feedthru 50 mV Input Power for 1 dB Compression V CC = +5 V 0.5 –2.0 GHz +25 +29 dBm

0.05 GHz +18 +22 dBm

Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm 0.5–2.0 GHz +42 +48 dBm VCC = +5 V 0.05 GHz +30 +36 dBm Supply Voltage V CC = 5 V @ 700 µA Typ. Control Voltages C TL1, CTL2, CTL4, CTL8, CTL16,Low = 0 to 0.8 V @ 20 µA Typ. C TL1, CTL2, CTL4, CTL8, CTL16,High = 3.5 to 5.0 V @ 20 µA Typ. Operating Characteristics at 25°C (0, +5 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. Input/output. 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.

2 Alpha Industries, Inc.[781] 935-5150 • Fax [617] 824-4579• Emailsales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 2/01A GaAs IC 5 Bit Digital Attenuator with Driver 1 dB LSB Positive Control DC–2 GHz AA110-85 GND GND GND GND GND GND GND GND J N/C VCC VSS C TL1 C TL2 C TL4 C TL8 C TL16 0.01 µF (Negative Voltage Holding Capacitor) (Power Supply Bypass Capacitor) (Charge Pump Capacitor) 0.01 µF 0.025 µFC 2 C 1 123 4 5678 20 19 18 17 16 15 14 13 91 0 12 11 Pin Out “0”= 0 to 0.8 V (VCC = 5 V). “1”= 3.5 to 5 V (VCC = 5 V). Attenuation C TL1 C TL2 C TL4 C TL8 C TL16 J1–J2 0 0 0 0 0 Ins. Loss 10 000 1 d B 01 000 2 d B 00 100 4 d B 00 010 8 d B 0 0 0 0 1 16 dB 1 1 1 1 1 31 dB Truth Table Typical Performance Data (VCC = +5 V) Frequency (GHz) Insertion Loss vs. Frequency -2.2 -2.0 -1.8 -1.6 -1.4 -1.2 -1.0 0 0.5 1.0 1.5 2.0 Insertion Loss (dB) Frequency (GHz) Attenuation Accuracy vs. Frequency -1.5 -1.0 -0.5 0.5 1.0 1.5 0 0.5 1.0 1.5 2.0 Deviation from Nominal Attenuation (dB) 1 dB 2 dB 4 dB8 dB 16 dB 31 dB Frequency (GHz) VSWR vs. Frequency VSWR 1.0 1.2 1.4 1.6 1.8 2.0 0 0.5 1.0 1.5 2.0 Ins. Loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Characteristic Value RF Input Power 2 W > 500 MHz, 0/6 V

0.5 W > 50 MHz, 0/6 V

Control Voltage1 -0.2 V, +6 V Operating Temperature -40 °C to +85°C Storage Temperature -65 °C to +150°C Θ JC 85°C/W Absolute Maximum Ratings Note: Exceeding these ratings may cause irreversible damage. 1. Control voltage must not exceed supply voltage.