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| 型号： | ADL5504ACBZ-P2 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 检测器 |
| 英文描述： | 450 MHz - 6000 MHz RF/MICROWAVE LINEAR DETECTOR |
| 封装： | 1.20 X 0.80 MM, ROHS COMPLIANT, CB-6-8, WLCSP-6 |
| 文件页数： | 10/24页 |
| 文件大小： | 1156K |
| 代理商： | ADL5504ACBZ-P2 |
ADL5504
Rev. A | Page 18 of 24
Figure 44 shows a plot of the error at 25°C, the temperature
at which the ADL5504 is calibrated. Note that the error is not 0;
this is because the ADL5504 does not perfectly follow the ideal
linear equation, even within its operating region. The error at
the calibration points is, however, equal to 0 by definition.
Figure 44 also shows error plots for the output voltage at 40°C
and +85°C. These error plots are calculated using the gain and
intercept at 25°C. This is consistent with calibration in a mass
production environment where calibration at temperature is not
practical.
+85°C
–40°C
–3
–2
–1
0
1
2
3
INPUT (dBm)
E
RRO
R
(
d
B)
–25
–20
–15
–10
–5
0
5
10
15
+25°C
08437-
044
Figure 44. Error from Linear Reference vs. Input at 40°C, +25°C, and
+85°C vs. +25°C Linear Reference, 1900 MHz Frequency, 3.0 V Supply
CALIBRATION FOR IMPROVED ACCURACY
Another way of presenting the error function of the ADL5504
is shown in Figure 45. In this case, the decibel (dB) error at hot
and cold temperatures is calculated with respect to the transfer
function at ambient temperature. This is a key difference in
comparison to Figure 44, in which the error was calculated
with respect to the ideal linear transfer function at ambient
temperature. When this alternative technique is used, the
error at ambient temperature becomes equal to 0 by definition
This plot is a useful tool for estimating temperature drift at a
particular power level with respect to the (nonideal) response
at ambient temperature. The linearity and dynamic range tend
to be improved artificially with this type of plot because the
ADL5504 does not perfectly follow the ideal linear equation
(especially outside of its linear operating range). Achieving
this level of accuracy in an end application requires calibration
at multiple points in the operating range of the device.
In some applications, very high accuracy is required at just one
power level or over a reduced input range. For example, in a
wireless transmitter, the accuracy of the high power amplifier
(HPA) is most critical at or close to full power. The ADL5504
offers a tight error distribution in the high input power range,
as shown in Figure 45. The high accuracy range, beginning
around 2 dBm at 1900 MHz, offers 12 dB of ±0.15 dB detection
error over temperature. Multiple point calibration at ambient
temperature in the reduced range offers precise power
measurement with near 0 dB error from 40°C to +85°C.
–3
–2
–1
0
1
2
3
INPUT (dBm)
E
RRO
R
(
d
B)
–25
–20
–15
–10
–5
0
5
10
15
+25°C
–40°C
+85°C
08437-
045
Figure 45. Error from +25°C Output Voltage at 40°C, +25°C, and +85°C After
Ambient Normalization, 1900 MHz Frequency, 3.0 V Supply
Note that the high accuracy range center varies over frequency
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相关代理商/技术参数 |
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|---|---|
| ADL5504ACBZ-P7 | 功能描述:IC DETECTOR RF/IF TRUPWR 6WLCSP RoHS:是 类别:RF/IF 和 RFID >> RF 检测器 系列:TruPwr™ 产品变化通告:Product Discontinuation 15/May/2006 标准包装:3,000 系列:- 频率:100MHz ~ 2GHz RF 型:手机，GSM，DCS，PCS 输入范围:- 精确度:- 电源电压:2.7 V ~ 5.5 V 电流 - 电源:300µA 包装:带卷 (TR) 封装/外壳:SC-74，SOT-457 其它名称:NCS5000SNT1GOS |
| ADL5504-EVALZ | 制造商:Analog Devices 功能描述:EVALUATION BOARDS - Bulk |
| ADL5504XCBZ | 功能描述:IC DETECTOR RF TRUPWR 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1 |
| ADL5505 | 制造商:AD 制造商全称:Analog Devices 功能描述:450 MHz to 6000Mhz TruPwr Detector |
| ADL5505ACBZ-P2 | 制造商:AD 制造商全称:Analog Devices 功能描述:450 MHz to 6000Mhz TruPwr Detector |
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