AT-119

2.25 Volt Voltage Variable Absorptive Attenuator 42 dB, 1.8 - 2.5 GHz Features • • • • • Single Positive Voltage Control: 0 to +2.25 Volts 42 dB Typical Attenuation Range at 2.4 GHz Low DC Power Consumption SOT-25 Plastic Package Tape and Reel Packaging Available AT-119 V9 Functional Schematic 5 VCC 4 VCTL Description M/A-COM’s AT-119 is a GaAs MMIC voltage variable absorptive attenuator in a low cost, SOT-25 five-lead, surface mount plastic package. M/A-COM fabricates the AT-119 with a proven monolithic GaAs 0.5 micron gate process that features full chip passivation for performance and reliability. 1 RF 2 GND 3 RF Applications The AT-119 is ideally suited for applications that require fine tuning, linear attenuation with voltage, and very low power consumption. Typical applications for the AT-119 include automatic gain control circuits in satellite radio receivers and other wireless receivers. 100pF 100pF Pin Configuration Pin 1 2 3 4 5 Function RF GND RF VCTL VCC Description RF (input / output) Ground RF (input / output) Control Voltage DC Supply Voltage Ordering Information 1 Part Number AT-119 AT-119TR-3000 AT-119SMB Package SOT-25 Plastic Package 3000 piece reel Sample Test Board (Includes 5 Samples) Absolute Maximum Ratings 2,3 TA = +25°C (unless otherwise specified) Parameter Input Power Supply Voltage VCC Control Voltage VCTL Operating Temperature Storage Temperature 2. 3. 1. Reference Application Note M513 for reel size information. Absolute Maximum +21 dBm -1V ≤ VCC ≤ +8 V -1V ≤ VCTL ≤ VCC +0.5 V -40°C to +85°C -65°C to +150°C Exceeding any one or combination of these limits may cause permanent damage to this device. M/A-COM does not recommend sustained operation near these survivability limits. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. 2.25 Volt Voltage Variable Absorptive Attenuator 42 dB, 1.8 - 2.5 GHz Electrical Specifications: TA = 25°C, Frequency = 2.4 GHz, VCC = 3.3 V, Z0 = 50 Ω Parameter Insertion Loss Maximum Attenuation Attenuation Slope Return Loss AT-119 V9 Test Conditions 4,5 VCTL = 2.25 V VCTL = 0.5 V 0.75 V < VCTL < 1.75 V 0.0 V < VCTL < 0.75 V 0.75 V < VCTL < 1.75 V 1.75 V < VCTL < 2.25 V 0.75 V < VCTL < 2.25 V 0.75 V < VCTL < 2.25 V 50% VCTL to 10% / 90% RF VCTL = 3 V, In-Band Units dB dB dB/V dB dB dB dBm dBm nS mV Min. — 37 24 — — — — — — — Typ. 2.4 42 — 6 10 14 10 15 100 10 Max. 3.2 — — — — — — — — — Input Power for 1dB Change in Attenuation Input 3rd Order Intercept Point Switching Speed Transients 4. 5. External DC blocking capacitors are required on all RF ports. VCC = +3.3 V @ 50 µA typical. VCTL = 0 V to +2.25 V @ 50 µA typical. Application Schematic VCC V control Handling Procedures Please observe the following precautions to avoid damage: 100 pF RF RF IN/ OUT Static Sensitivity 220 pF 100 pF RF IN/ OUT Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. 15 pF 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. 2.25 Volt Voltage Variable Absorptive Attenuator 42 dB, 1.8 - 2.5 GHz Typical Performance Curves Insertion Loss vs. Frequency @ 2.25 V Control Voltage 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 .0 0.5 1.0 1.5 2.0 2.5 3.0 +25°C -40°C +85°C AT-119 V9 Attenuation vs. Control Voltage @ +25°C 0 10 20 30 40 50 60 3.0 1.8 GHz 2.1 GHz 2.4 GHz 2.5 2.0 1.5 1.0 0.5 0.0 Frequency (GHz) Control Voltage (V) Typical Device Variation, 2.4 GHz 0 Attenuation vs. Frequency @ 0.0 V Control Voltage 0 10 10 20 20 30 30 40 40 50 50 +25°C -40°C +85°C 60 3.0 2.5 2.0 1.5 1.0 0.5 0.0 60 0.5 1.0 1.5 2.0 2.5 3.0 Control Voltage (V) Frequency (GHz) Return Loss vs. Control Voltage 0 Insertion Loss Delta Normalized to +25°C (-40°C) 8 6 4 5 10 2 0 -2 1.8 GHz 2.1 GHz 2.4 GHz 15 20 -4 -6 -8 25 1.8 GHz 2.1 GHz 2.4 Ghz 30 2.0 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Control Voltage (V) 3 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. Control Voltage (V) • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. 2.25 Volt Voltage Variable Absorptive Attenuator 42 dB, 1.8 - 2.5 GHz Typical Performance Curves Insertion Loss Delta Normalized to +25°C (+85°C) 8 6 4 2 0 -2 -4 -6 -8 3.0 2.5 2.0 1.5 1.0 0.5 0.0 1.8 GHz 2.1 GHz 2.4 GHz AT-119 V9 Input IP3 vs. Control Voltage @ +25°C 40 35 30 25 20 15 10 5 0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Control Voltage (V) Control Voltage (V) Input Power for 1 dB Change in Attenuation 30 Input IP3 vs. Control Voltage over Temperature 40 35 30 IIP3 @ +25C IIP3 @ +85C IIP3 @ -40C 25 20 25 20 15 10 15 10 5 0 3.0 1.8 GHz 2.4 GHz 5 0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 2.5 2.0 1.5 1.0 0.5 0.0 Control Voltage (V) Control Voltage (V) SOT-25 4 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.