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參數(shù)資料
| 型號： | MAX2015EUA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | 0.1GHz to 2.5GHz, 75dB Logarithmic Detector/Controller |
| 中文描述： | LOG OR ANTILOG AMPLIFIER, 2400 MHz BAND WIDTH, PDSO8 |
| 封裝： | MO-187CAA, USOP-8 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 628K |
| 代理商： | MAX2015EUA-T |
Controller Mode
The MAX2015 can also be used as a detector/controller
within an AGC loop. Figure 3 depicts one scenario
where the MAX2015 is employed as the controller for a
variable-gain PA. As shown in the figure, the MAX2015
monitors the output of the PA through a directional cou-
pler. An internal integrator (Figure 2) compares the
detected signal with a reference voltage determined by
V
SET
. The integrator, acting like a comparator, increas-
es or decreases the voltage at OUT, according to how
closely the detected signal level matches the V
SET
ref-
erence. The MAX2015 adjusts the power of the PA to a
level determined by the voltage applied to SET. With R1 =
0
, the controller mode slope is approximately
19mV/dB (RF = 100MHz).
Layout Considerations
As with any RF circuit, the layout of the MAX2015 circuit
affects the device
’
s performance. Use an abundant num-
ber of ground vias to minimize RF coupling. Place the
input capacitors (C1, C2) and the bypass capacitors
(C3
–
C6) as close to the IC as possible. Connect the
bypass capacitors to the ground plane with multiple vias.
M
0.1GHz to 2.5GHz, 75dB Logarithmic
Detector/Controller
_______________________________________________________________________________________
9
MAX2015
C6
R4
C1
C5
1
2
OUT
SET
V
S
C4
C3
4
V
CC
V
CC
INLO
V
OUT
V
SET
20k
20k
INHI
7
8
RFIN
C2
3
DETECTORS
GND
6
PWDN
5
Figure 2. Controller-Mode Typical Application Circuit
MAX2015
OUT
SET
20k
20k
IN
COUPLER
LOGARITHMIC
DETECTOR
TRANSMITTER
POWER AMPLIFIER
GAIN-CONTROL INPUT
SET-POINT
DAC
Figure 3. System Diagram for Automatic Gain-Control Loop
1
2
3
4
8
7
6
5
OUT
SET
GND
PWDN
V
CC
INLO
INHI
V
CC
MAX2015
μ
MAX
TOP VIEW
Pin Configuration
Chip Information
TRANSISTOR COUNT: 3157
PROCESS: BiCMOS
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PDF描述 |
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| MAX2015 | 0.1GHz to 2.5GHz, 75dB Logarithmic Detector/Controller |
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| MAX2016EVKIT | Evaluation Kit |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2015EVKIT | 功能描述:射頻開發(fā)工具 RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| MAX2016 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX20-16.0C | 制造商:MDE 制造商全稱:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE |
| MAX20-16.0CA | 制造商:MDE 制造商全稱:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE |
| MAX2016_06 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:LF-to-2.5GHz Dual Logarithmic Detector/ Controller for Power, Gain, and VSWR Measurements |
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