AT-119TR

2.25 Volt Voltage Variable Absorptive Attenuator - 40 dB, 1.8—2.5 GHz AT-119 Features      Functional Schematic VCC 5 VCTL 4 Single Positive Voltage Control 0 to +2.25 Volts >50 dB Attenuation Range at 2.1 GHz Low DC Power Consumption Low Cost SOT-25 Plastic Package Tape and Reel Packaging Available 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 self-aligned gate process that features full chip passivation for performance and reliability 1 RF 100 pF 2 GND 3 RF 100 pF 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. 1. VCC = +3.3 VDC @ 50 µA max. 2. VCTL = 0 VDC to +3.3 VDC @ 50 µA max. 3. External DC blocking capacitors are required on all RF ports. Absolute Maximum Ratings1 @ TA = +25 °C (unless otherwise specified) Parameter Maximum Input Power Supply Voltage VCC ControlVoltage VCTL Operating Temperature Storage Temperature Absolute Maximum +21 dBm -1 V, + 8 V -1 V, VCC +0.5 V -40°C to +85°C -65°C to +150°C 1. Exceeding any one or a combination of these limits may cause permanent damage. Electrical Specifications @ TA = +25 °C, Frequency = 2.4 GHz, VCC = 3.3 VDC1 Parameters Test Conditions Units Min Typ Max Minimum Insertions Loss Maximum Attenuation Attenuation Slope Return Loss Input Power for 1 dB Change in Attenuation Input 3rd Order Intercept Point Switching Speed Transients VCTL = 2.25 VDC VCTL = 0.5 VDC 0.75 VDC < VCTL < 1.75 VDC 0.6 VDC < VCTL < 1.75 VDC 0 VDC < VCTL < 3.0 VDC 0 VDC < VCTL < 3.0 VDC 50% VCTL to 10% / 90% RF VCTL = 3 VDC, In-Band dB dB dB/V dB dBm dBm nSec mV 37 24 3.0 3.2 >12 >10 >20 180 10 1. All measurements in a 50-τ system unless otherwise specified. The RF ports must be blocked outside of the package from ground or any other voltage. 2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz Typical Performance Curves Attenuation vs. Control Voltage, +25 °C 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 AT-119 Attenuation vs. Frequency @ 0.0 VDC for Control Voltage 1.8 GHz 15 20 25 30 +25 deg C 2.4 GHz 35 40 45 2.1 GHz 50 55 60 500 1000 +85 deg C -40 deg C CONTROL VOLTAGE (Volts) 1500 2000 2500 3000 FREQUENCY (MHz) Insertion Loss vs. Frequency @ 2.25 VDC for Control Voltage 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 500 1000 1500 2000 2500 3000 Return Loss vs. Control Voltage @ +25 °C 0 -5 2.4 GHz +85 deg C +25 deg C -40 deg C 2.1 GHz -10 -15 -20 -25 -30 3.0 2.5 2.0 1.5 1.0 0.5 0.0 1.8 GHz FREQUENCY (MHz) CONTROL VOLTAGE (VDC) Insertion Loss Delta Normalized to +25 °C 6 Insertion Loss Delta Normalized to +25 °C 6 -40 C 4 2 0 -2 -4 o +85 C o 1.8 GHz 2.4 GHz 4 1.8 GHz 2 2.4 GHz 0 -2 -4 2.1 GHz 2.1 GHz -6 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -6 3.0 2.5 2.0 1.5 1.0 0.5 0.0 CONTROL VOLTAGE (VDC) CONTROL VOLTAGE (VDC) Specifications subject to change without notice. North America: Tel. (800) 366-2266 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2 2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz Typical Performance Curves (Cont’d) Input Power for 1 dB Change in Attenuation: +25 °C 20 40 AT-119 Input IP3 vs. Control Voltage: +25 °C 35 Input Power = 0 dBm 2.4 15 1.8 GHz 30 25 10 20 15 1.8 GHz 2.4 GHz 5 10 5 0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 3 2.5 2 1.5 1 0.5 0 CONTROL VOLTAGE (VDC) CONTROL VOLTAGE (VDC) Typical Device Variation, Attenuation vs. VCTL 0 5 10 15 20 25 30 35 40 45 50 55 60 3.0 2.5 2.0 1.5 1.0 0.5 0.0 Freq = 2.4 GHz VCTL (VDC) Specifications subject to change without notice. North America: Tel. (800) 366-2266 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 3 2.25 Volt Voltage Variable Absorptive Attenuator, 40 dB, 1.8 - 2.5 GHz SOT-25 1 PIN 5 AT-119 SOT-25 1 Dimensions D e1 A2 DIM MIN Measurement (mm) NOM M AX 1.45 0.15 0.90 0.30 0.08 2.90 basic 0.95 basic 1.90 basic 2.80 basic 1.60 basic 0.30 0° 0.60 4° 0.45 8° 1.15 1.30 0.50 0.22 A A1 A2 E1 WZ X Y E L b c PIN 5 D e e A b A1 c ° e1 E E1 L 1. See JEDEC MO-178 VAR AA for additional dimensions and tolerances ° Ordering Information Part Number AT-119TR AT-119TR-3000 AT-119SMB Package Tape and Reel1 3000 Piece Tape and Reel Sample Board 1. If specific reel size is required, consult factory for part number assignment. Specifications subject to change without notice. North America: Tel. (800) 366-2266 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 4