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參數(shù)資料
| 型號： | HMC473MS8 |
| 廠商： | 美國訊泰微波有限公司上海代表處 |
| 英文描述： | GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 0.45 - 2.2 GHz |
| 中文描述： | 砷化鎵MMIC電壓可變衰減器，0.45 - 2.2吉赫 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 244K |
| 代理商： | HMC473MS8 |
MICROWAVE CORPORATION
9 - 115
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
A
9
Attenuation Linearizing Control Circuit
For The HMC473MS8 Voltage Variable Attenuator
A driver circuit to improve the attenuation linearity of the HMC473MS8 can be implemented with a simple op-amp con-
figuration. A
breakpoint
linearization circuit will scale the voltage supplied to the control line of the HMC473MS8, so that
a more linear attenuation vs. control voltage slope can be achieved. A -3.3V and +3.3V supply is required.
Diode and resistor values which define the op-amp gain, and breakpoint were selected to optimize a measured produc-
tion lot of attenuators at 0.9 GHz. R7 may be varied to optimize the performance of any given attenuator. If the input
voltage to the linearizing circuit will not drop below 1.0V, the R9 and D2 may be omitted, and this will greatly reduce the
overall power consumption of the driver circuit.
The linearizing circuit has been optimized for 0.9 GHz attenuation applications. A similar approach may be used at
other frequencies by adjusting R1 - R9 resistor values
.
v00.1103
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 0.45 - 2.2 GHz
HMC473MS8
Required Parts List
Application Circuit
Part
Description
Manufacturer
AD822
Op-Amp
Analog Devices
R1
10K ohms
Panasonic
R2
200K ohms
Panasonic
R3
7.5K ohms
Panasonic
R4
39K ohms
Panasonic
R5
220K ohms
Panasonic
R6
91K ohms
Panasonic
R7
910 ohms
Panasonic
R8
51 ohms
Panasonic
R9
100 ohms
Panasonic
D1, D2
LL4148 D-35
Digi-Key
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HMC473MS8_08 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs MMIC VOLTAGE VARIABLE ATTENUATOR, 0.45 - 2.2 GHz |
| HMC473MS8E | 功能描述:ATTENUATOR VOLT VARIABLE 8MSOP RoHS:是 類別:RF/IF 和 RFID >> 衰減器 系列:- 標準包裝:1 系列:- 衰減值:- 容差:±1% 頻率范圍:0 ~ 500MHz 功率（瓦特）:2W 阻抗:93 歐姆 封裝/外殼:BNC 單排模塊 |
| HMC473MS8ETR | 制造商:Hittite Microwave Corp 功能描述:ATTENUATOR VOLT VARIABLE 8MSOP 制造商:Hittite Microwave Corp 功能描述:HMC473 Series 0.45 - 2.2 GHz GaAs MMIC Voltage Variable Attenuator - MSOP-8 |
| HMC474MP86 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 6.0 GHz |
| HMC474MP86_09 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 6 GHz |
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