 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| AT-108 Voltage Variable Absorptive Attenuator 0.5-- 40 dB, 0.5 -- 3.0 GHz Features * * * * * * Single Positive Voltage Control 0 to +5 Volts 40 dB Attenuation Range at 900 MHZ GHz 2 dB Linearity from BSL Low DC Power Consumption Low-Cost SOIC-8 Plastic Package Tape and Reel Packaging Available SOIC-81 PIN 8 Oreintation Mark .1497/.1574 (3.80/4.00) -B- .2284/.2440 (5.80/6.20) M .010(.25) B M PIN 1 .1890/.1968 (4.80/5.00) -A- Description M/A-COM's AT-108 is a GaAs, MESFET MMIC voltage variable absorptive attenuator in a low cost SOIC-8 lead surface mount plastic package. The AT-108 is ideally suited for use where linear attenuation fine tuning and very low power consumption are required. Typical applications include radio, cellular, GPS equipment and automatic gain/level control circuits. The AT-108 is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability. .0532/.0688 (1.35/1.75) .004 (0.10) BSC. .050 (1.27) .0040/.0098 (.10/.25) -C- CHAMFER (OPTIONAL ) 0/80 .013/.020 (8 (.33/.51) PL) M .010(.25) C A M B S .016/.050 (0.40/1.27) .0075/.0098 (.19/.25) 1. Dimensions are in inches/mm. Ordering Information Part Number AT-108 AT-108TR AT-108RTR Package SOIC-8 Lead Plastic Package Forward Tape and Reel1 Reverse Tape and Reel1 1. If specific reel size is required, consult factory for part number assignment. Electrical Specifications: TA = 25C1= Parameter Insertion Loss Attenuation Test Conditions1 0.5 - 1.0 GHz 1.0 - 3.0 GHz 0.5 - 1.0 GHz 1.0 - 2.0 GHz 2.0 - 3.0 GHz 0.5 - 1.0 GHz 1.0 - 2.0 GHz 2.0 - 3.0 GHz 0.5 - 3.0 GHz 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, Control to 10% RF In-band Units dB dB dB dB dB dB dB dB s s mV Min. Typ. 2.5 3.2 Max. 2.7 3.5 40 35 28 0.5 1.2 1.5 2:1 15 25 12 0.8 1.5 1.8 Flatness (Peak-to-Peak) VSWR Trise, Tfall Ton, Toff Transients 1. All measurements in a 50 system. Specifications subject to change without notice. V 4.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 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. Voltage Variable Absorptive Attenuator, 40 dB, 0.5-3.0 GHz Absolute Maximum Ratings1 Parameter Maximum Input Power Supply Voltage VCC Control Voltage VC Operating Temperature Storage Temperature 1. AT-108 Functional Schematic GND RF 7 GND 6 Vc 5 Absolute Maximum +21 dBm -1V, +8V -1V, VCC + 0.5V -40C to +85C -65C to +150C PIN Orientation Mark 8 Operation of this device above any one of these parameters may cause permanent damage. 1 GND 2 GND 3 RF 4 V cc 1. 2. 3. 4. VCC = +5 VDC @ 50 A max. VC = 0 VDC to +5 VDC @ 50 A max. External DC blocking capacitors are required on all RF ports. 39pF used for data measurements. Typical Performance Curves Attenuation vs. Control Voltage @ +25C 0 -5 2200MHz -10 -15 -20 -25 -30 -35 -40 -45 -50 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 900MHz 1800MHz -1.6 -1.8 Insertion Loss vs. Frequency Attenuation (dB) Insertion Loss (dB) -2 -2.2 -2.4 -2.6 -2.8 0.66 0.82 0.97 1.13 1.28 1.44 1.75 1.91 2.06 2.22 2.38 2.53 2.69 Control Voltage (Volts) Frequency (GHz) Return Loss vs. Control Voltage @ +25C F = 900 MHz 0 -5 Return Loss vs. Control Voltage @ +25C F = 1800 MHz 0 -5 Input RL Output RL -10 -15 -20 -25 Return Loss (dB) -10 -15 -20 -25 -30 -35 Input RL Output RL Return Loss (dB) 5 4.5 4 3.5 3 2.5 2 1.5 Control Voltage (Volts) 1 0.5 0 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 2.84 0.5 1.6 0 0 Control Voltage (Volts) Specifications subject to change without notice. V 4.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 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. Voltage Variable Absorptive Attenuator, 40 dB, 0.5-3.0 GHz Typical Performance Curves (Cont'd) 0 -2 -4 Output Return Loss Input Return Loss AT-108 Return Loss vs. Control Voltage @ +25C F = 2200 MHz Attenuation (dB) Attenuation vs. Control Voltage Typical Device Deviation f = 900 MHz @ +25C 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 Return Loss (dB) -6 -8 -10 -12 -14 -16 -18 -20 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 Control Voltage (Volts) Control Voltage(Volts) Maximum Attenuation vs. Frequency -20 -25 Attenuation Rel to IL (dB) -30 -35 -40 -45 -50 0 -5 Attenuation vs. Control Voltage Typical Device Deviation F = 1800 MHz @ +25C Attenuation (dB) -10 -15 -20 -25 -30 -35 -40 -45 0.4 1.8 0.56 0.71 0.87 1.02 1.18 1.34 1.49 1.65 1.96 2.12 2.27 2.43 2.58 2.74 2.9 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 Control Voltage(Volts) Frequency (dB) Attenuation vs. Control Voltage Typical Device Deviations F = 2200 MHz @ +25C Attenuation Delta (dB) 0 -5 3 2 1 0 -1 -2 5 Attenuation vs. Temperature, Normalized to +25C, F=900 MHz -40C -85C Attenuation (dB) -10 -15 -20 -25 -30 -35 -40 -45 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 4 3 2 1 0 Control Voltage (Volts) Control Voltage(Volts) 1 dB Compression vs. Control Voltage @ +25C, F = 900 MHz 25 Compression Point (dBm) 20 15 10 5 0 35 30 IP3 vs. Control Voltage 900 MHz IP3 (dBm) 25 20 15 10 5 0 400 MHz -5 5 4 3 2 1 0 5 4 3 2 1 0 Control Voltage (Volts) Specifications subject to change without notice. Control Voltage (Volts) V 4.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 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. |
Price & Availability of AT-108TR
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |