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参数资料
| 型号： | HMC473MS8 |
| 厂商： | HITTITE MICROWAVE CORP |
| 元件分类： | 衰减器 |
| 英文描述： | 450 MHz - 2200 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 3.5 dB INSERTION LOSS-MAX |
| 封装： | ULTRA SMALL, PLASTIC, SMT, MSOP-8 |
| 文件页数： | 7/8页 |
| 文件大小： | 254K |
| 代理商： | HMC473MS8 |
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Attenuation Linearizing Control Circuit
For The HMC473MS8 / HMC473MS8E Voltage Variable Attenuator
A driver circuit to improve the attenuation linearity of the HMC473MS8 & HMC473MS8E can be implemented with a
simple op-amp configuration. A breakpoint linearization circuit will scale the voltage supplied to the control line of the
HMC473MS8 & HMC473MS8E, 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
production 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
.
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
GaAs MMIC VOLTAGE VARIABLE
ATTENUATOR, 0.45 - 2.2 GHz
HMC473MS8 / 473MS8E
v01.1105
相关PDF资料 |
PDF描述 |
|---|---|
| HMC474MP86E | 0 MHz - 6000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| HMC474MP86 | 0 MHz - 6000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| HMC476MP86 | 0 MHz - 6000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| HMC476MP86E | 0 MHz - 6000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HMC473MS8_08 | 制造商:HITTITE 制造商全称: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 类别:RF/IF 和 RFID >> 衰减器 系列:- 标准包装:1 系列:- 衰减值:- 容差:±1% 频率范围:0 ~ 500MHz 功率（瓦特）:2W 阻抗:93 欧姆 封装/外壳:BNC 单排模块 |
| 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 制造商全称:Hittite Microwave Corporation 功能描述:SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 6.0 GHz |
| HMC474MP86_09 | 制造商:HITTITE 制造商全称:Hittite Microwave Corporation 功能描述:SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 6 GHz |
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