AT65-0009

Voltage Variable Attenuator 824 - 960 MHz V 1.00 AT65-0009 Features n 25 dB Attenuation Range n High IP3 n Excellent Linearity Performance n Surface Mount SOT-25 Package n Low Cost/High Performance n 50 Ohm Nominal Impedance SOT-25 Description M/A-COM’s AT65-0009 is an integrated assembly containing two PIN diodes and a passive glass quadrature hybrid. This device is packaged in a 5 leaded SOT plastic surface mount package. The diodes are biased to +3.5V for maximum attenuation using the suggested Bias Circuit. The AT65-0009 is ideally suited for GSM communication applications requiring variable attenuation in the 824 to 960 MHz bandwidth. Electrical Specifications: TA = 25°C, Z0 = 50Ω Parameter Insertion Loss VSWR Attenuation Flatness vs. Frequency Switching Speed Input IP3 Input IP2 Attenuation 0 - 10 dB 0 - 20 dB 0 - 30 dB 50% control to 90%/10% RF Two Tones 900 MHz, 905 MHz, +5 dBm VB = 0V Two Tones 900 MHz, 905 MHz, +5 dBm VB = 0V VB = 3.7V Test Conditions VB = 0V Units dB Ratio dB dB dB µSec dB dB dB Min. — — — — — — — — 25 Typ. 1.7 1.7 0.5 0.5 1.0 5.0 40 34 28 Max. 2.1 2.2 1.3 1.3 2.5 7.0 — — — Voltage Variable Attenuator, 824 - 960 MHz Pin Configuration Pin # 1 2 3 4 5 Function RFIN VB GND RFOUT VB GND GND AT65-0009 V 1.00 Recommended PCB Configuration Functional Diagram and Bias Circuitry GND GND 1. Circuit Material = FR-4, TETRA II, 0.031 inches thick. 2. Line Width = 0.025 inches, Line Spacing = 0.0056 inches. Absolute Maximum Ratings 3 PIN 1 C5 L1 C1 R...