- 您現在的位置：買賣IC網 > PDF目錄65466 > HMC173MS8 (HITTITE MICROWAVE CORP) 800 MHz - 2000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 3.7 dB INSERTION LOSS-MAX PDF資料下載
參數資料
| 型號： | HMC173MS8 |
| 廠商： | HITTITE MICROWAVE CORP |
| 元件分類： | 衰減器 |
| 英文描述： | 800 MHz - 2000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 3.7 dB INSERTION LOSS-MAX |
| 封裝： | ULTRA SMALL, PLASTIC, SMT, MSOP-8 |
| 文件頁數： | 5/6頁 |
| 文件大小： | 385K |
| 代理商： | HMC173MS8 |
9 - 5
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
TTENU
A
T
OR
S
-
SMT
9
DIS
CO
NTIN
UE
D
PR
OD
UC
T
No
t Reco
mm
ended
for
Ne
w D
esi
gns
Attenuation Linearizing Control Circuit
For The HMC173MS8 Voltage Variable Attenuator
A driver circuit to improve the attenuation linearity of the HMC173MS8 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 HMC173MS8, so that
a more linear attenuation vs. control voltage slope can be achieved. A -5V and +5V 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 .825 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 .825 GHz attenuation applications. A similar approach may be used at
other frequencies by adjusting R1 - R9 resistor values
.
v01.0801
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 0.8 - 2.0 GHz
HMC173MS8
Required Parts List
-19
-18
-17
-16
-15
-14
-13
-12
RETURN
LOSS
(dB)
0.5
1
1.5
2
2.5
3
CONTROL VOLTAGE (Vdc)
With
Linearizer
Without
Linearizer
Application Circuit
-60
-50
-40
-30
-20
-10
0
ATTENUATION
(dB)
01
2
3
CONTROL VOLTAGE (Vdc)
Without
Linearizer
With
Linearizer
Return Loss vs.
Control Voltage @ .825 GHz
Attenuation vs.
Control Voltage @ .825 GHz
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
相關PDF資料 |
PDF描述 |
|---|---|
| HMC175MS8RTR | RF/MICROWAVE DOUBLE BALANCED MIXER |
| HMC175MS8TR | RF/MICROWAVE DOUBLE BALANCED MIXER |
| HMC175MS8 | 1700 MHz - 4500 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 11 dB CONVERSION LOSS-MAX |
| HMC175MS8E | 1700 MHz - 4500 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 11 dB CONVERSION LOSS-MAX |
| HMC182S14RTR | RF/MICROWAVE SGL POLE FOUR THROW SWITCH |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HMC173MS8_01 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 0.8 - 2.0 GHz |
| HMC174MS8 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs MMIC T/R SWITCH DC - 3 GHz |
| HMC174MS8_05 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs MMIC T/R SWITCH DC - 3 GHz |
| HMC174MS8E | 制造商:Hittite Microwave Corp 功能描述:IC MMIC SWITCH GAAS 3GHZ 8-MSOP |
| HMC175MS8 | 制造商:HITMIC 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。