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參數資料
| 型號： | ADL5501-EVALZ |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 50 MHz to 4 GHz TruPwr Detector |
| 中文描述： | 50 MHz至4 GHz TruPwr檢測器 |
| 文件頁數： | 20/28頁 |
| 文件大?。?/td> | 1654K |
| 代理商： | ADL5501-EVALZ |
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ADL5501
The square-domain filter at FLTR can be reduced to improve
response time, and the remaining ac residual can be decreased
by using the output filter, which has a smaller time constant.
OUTPUT DRIVE CAPABILITY AND BUFFERING
The ADL5501 is capable of sourcing an output current of
approximately 3 mA. The output current is sourced through the
on-chip, 100 Ω series resistor; therefore, any load resistor forms
a voltage divider with this on-chip resistance.
It is recommended that the ADL5501 drive high resistive loads
to preserve output swing. If an application requires driving a low
resistance load, a simple buffering circuit can be used, as shown
in Figure 49. Similar circuits can be used to increase or decrease
the nominal conversion gain (see Figure 47 and Figure 48). In
Figure 48, the
AD8031
buffers a resistive divider to give half of
the slope. In Figure 47, the op amp gain of two doubles the slope.
Using other resistor values, the slope can be changed to an arbitrary
value. The AD8031 rail-to-rail op amp, used in these examples,
can swing from 50 mV to 4.95 V on a single 5 V supply and
operates at supply voltages down to 2.7 V. If high output current
is required (>10 mA), the
AD8051
, which also has rail-to-rail
capability, can be used down to a supply voltage of 3 V It can
deliver up to 45 mA of output current.
Rev. 0 | Page 20 of 28
100pF
0.1μF
0.01μF
ADL5501
VRMS
VPOS
COMM
5k
5k
5V
12.6V/V rms
AD8031
0
Figure 47. Output Buffering Options, Slope of 12.6 V/V rms at 900 MHz
100pF
0.1μF
0.01μF
ADL5501
VRMS
VPOS
COMM
5V
3.2V/V rms
AD8031
4k
5k
0
Figure 48. Output Buffering Options, Slope of 3.2 V/V rms at 900 MHz
100pF
0.1μF
0.01μF
ADL5501
VRMS
VPOS
COMM
5V
6.3V/V rms
AD8031
0
Figure 49. Output Buffering Options, Slope of 6.3 V/V rms at 900 MHz
VRMS OUTPUT OFFSET
The ADL5501 has a ±1 dB error detection range of about 30 dB,
as shown in Figure 10 to Figure 12 and Figure 16 to Figure 18.
The error is referred to the best-fit line defined in the linear region
of the output response. Below an input power of 20 dBm, the
response is no longer linear and begins to lose accuracy. In
addition, depending on the supply voltage, saturation of the
output limits the detection accuracy above 10 dBm. Calibration
points should be chosen in the linear region, avoiding the
nonlinear ranges at the high and low extremes.
10
0.01
0.1
1
–40
–35
–30
–25
–20
–15
INPUT (dBm)
–10
–5
0
5
10
15
O
0
Figure 50. Output vs. Input Level Distribution of 50 Devices,
Frequency 900 MHz, Supply 5.0 V
Figure 50 shows the distribution of the output response vs. the
input power for multiple devices. The ADL5501 loses accuracy at
low input powers as the output response begins to fan out. As the
input power is reduced, the spread of the output response increases
along with the error. Although some devices follow the ideal linear
response at very low input powers, not all devices continue the
ideal linear regression to a near 0 V y-intercept. Some devices
exhibit output responses that rapidly decrease, and some flatten
out. With no RF signal applied, the ADL5501 has a typical output
offset of 50 mV (with a maximum of 150 mV).
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| ADL5519ACPZ-WP | 1 MHz to 10 GHz, 50 dB Dual Log Detector/Controller |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADL5501-EVALZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:50 MHz to 6 GHz TruPwr Detector |
| ADL5502 | 制造商:AD 制造商全稱:Analog Devices 功能描述:450 MHz to 6000 MHz Crest Factor Detector |
| ADL5502_1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:450 MHz to 6000 MHz Crest Factor Detector |
| ADL5502ACBZ-P2 | 制造商:Analog Devices 功能描述:ADL5502: 450 MHZ TO 6000 MHZ CREST FACTOR DETECTOR - Tape and Reel |
| ADL5502ACBZ-P7 | 功能描述:IC RMS CF DET 0.45-6GHZ-8WLCSP RoHS:是 類別:RF/IF 和 RFID >> RF 檢測器 系列:- 產品變化通告:Product Discontinuation 15/May/2006 標準包裝:3,000 系列:- 頻率:100MHz ~ 2GHz RF 型:手機，GSM，DCS，PCS 輸入范圍:- 精確度:- 電源電壓:2.7 V ~ 5.5 V 電流 - 電源:300µA 包裝:帶卷 (TR) 封裝/外殼:SC-74，SOT-457 其它名稱:NCS5000SNT1GOS |
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