Voltage Variable Absorptive Attenuator 30 dB, 0.5-2.0 GHz
Features
• • • • • • • • Single Positive Voltage Control: 0 to +5 Volts 30 dB Voltage Variable Attenuation ± 2 dB Linearity from BSL Low DC Power Consumption Temperature Range: -40°C to +85°C SOIC-8 Plastic Package Tape and Reel Packaging Available Fast Switching Speed
AT-110 V4
Functional Schematic 1,2,3
8 7 6 5
Description
M/A-COM’s AT-110 is a GaAs MMIC voltage variable absorptive attenuator in a low-cost SOIC 8lead surface mount plastic package. The AT-110 has a faster switching speed than the AT-108 or AT-109. The AT-110 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-110 is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability.
1
2
3
4
1. VCC = +5 VDC ± 0.5 VDC @ 300 µA maximum. 2. VC = 0 VDC to +5 VDC @ 6 mA maximum. 3. External DC blocking capacitors are required on all RF ports.
Pin Configuration
Pin No.
1 2 3
Function
Ground Ground RF Port VCC
Pin No.
5 6 7 8
Function
VC Ground RF Port Ground
Ordering Information
Part Number AT-110 AT-110TR Package SOIC 8-Lead Plastic Package Forward Tape and Reel
4
Absolute Maximum Ratings 4
Parameter
Input Power Supply Voltage VCC Control Voltage VC Operating Temperature Storage Temperature Absolute Maximum +21 dBm -1 V < VCC < +8 V -1 V < VC < VCC + 0.5 V -40°C to +85°C -65°C to +150°C
Note: Reference Application Note M513 for reel size information.
4. Exceeding any one or combination of these limits may cause permanent damage to this device.
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.
Voltage Variable Absorptive Attenuator 30 dB, 0.5-2.0 GHz
Electrical Specifications5: TA = 25°C, Z0 = 50 Ω
Parameter
Insertion Loss Attenuation Flatness (Peak to Peak) VSWR Trise, Tfall Ton, Toff Transients
AT-110 V4
Test Conditions
0.5 - 1.0 GHz 1.0 - 2.0 GHz 0.5 - 1.0 GHz 1.0 - 2.0 GHz 0.5 - 1.0 GHz 1.0 - 2.0 GHz — 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In-band
Units
dB dB dB dB dB dB Ratio µS µS mV
Min
— — 30 25 — — — — — —
Typ
2.8 3.3 — — ± 0.5 ± 1.2 2:1 0.2 0.2 70
Max
3.0 3.6 — — ± 0.8 ± 1.5 — — — —
5. The RF ports must be blocked outside of the package from ground or any other voltage.
SOIC-8
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.
Voltage Variable Absorptive Attenuator 30 dB, 0.5-2.0 GHz
Typical Performance Curves @ 25°C
Attenuation vs. Control Voltage F = 900, 1800 MHz
0
1800 900
AT-110 V4
Attenuation vs. Temperature Normalized to +25°C , F = 900 MHz
3
-40°C
2
+85°C
-10
1
-20
0
-1
-30
-2
-40 5 4 3 2 1 0
-3 5 4 3 2 1 0
Control Voltage (V)
Control Voltage (V)
Insertion Loss vs. Frequency
4
Return Loss vs. Control Voltage F = 900 MHz
0
3
-10
2
-20
1
-30
0 0.5
1.0
1.5
2.0
-40 5 4 3 2 1 0
Frequency (GHz)
Control Voltage (V)
1 dB Compression vs. Control Voltage F = 900 MHz
40 40
IP3 vs. Control Voltage
30
30
20
20
400 MHz 900 MHz
10
10
0 5 4 3 2 1 0
0 5 4 3 2 1 0
Control Voltage (V)
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.
• 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.
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