数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

ADL5506ACBZ-R7 数据表(PDF) 19 Page - Analog Devices

部件名 ADL5506ACBZ-R7
功能描述  30 MHz to 4.5 GHz, 45 dB RF Detector
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADL5506ACBZ-R7 数据表(HTML) 19 Page - Analog Devices

Back Button ADL5506ACBZ-R7 Datasheet HTML 15Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 16Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 17Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 18Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 19Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 20Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 21Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 22Page - Analog Devices ADL5506ACBZ-R7 Datasheet HTML 23Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 24 page
background image
ADL5506
Data Sheet
Rev. A | Page 18 of 23
LOG CONFORMANCE ERROR CALCULATION
Log conformance error is expressed in terms of the deviation in
the output voltage between the measured VLOG and the VLOG
calculated with an ideal log transformation function. Ideally, the
measured VLOG output at a particular input power, as plotted in
Figure 44, must not deviate from the calculated value of VLOG at
that same input power. Setting the measured VLOG to the right
side of the preceding equation and rearranging yields
0
)
(
O
IN
SLOPE
IN
MEASURED
LOG
P
P
V
P
V
In actuality, this does not always calculate to zero. The finite
calculation that results is the log conformance error, as follows:
0
)
(
)
(
O
IN
SLOPE
IN
MEASURED
LOG
IN
P
P
V
P
V
P
Error
where Error is in dB.
When more than two calibration points are chosen to compute
the error, the error computation must be done in a piece-wise
fashion. For the ADL5506, three calibration points were chosen
in characterization to compute the log conformance error of the
ADL5506. For example, one set of calibration points used was
−40 dBm, −30 dBm, and −10 dBm. With three calibration points,
two regions of error are computed, Region A and Region B (see
Figure 45) To compute the error, first compute two slopes and
two intercepts: one slope and intercept for Region A and the
other slope and intercept for Region B. Note that the error is
zero at each calibration point.
IN1
IN2
LOG1
LOG2
A
SLOPE
P
P
V
V
V
_
IN2
IN3
LOG2
LOG3
B
SLOPE
P
P
V
V
V
_
Next, find the two intercepts. (The two intercept points can be
computed with the same calibration points, middle point for
both, with the slope being different for the two intercept
points.)
IN2
A
SLOPE
LOG
A
O
P
V
V
P
_
2
_
3
_
3
_
IN
B
SLOPE
LOG
B
O
P
V
V
P
Figure 44. VLOG vs. PIN
The log conformance error for Region A, which is from the low
end of the input power range to PIN2 is as follows:
A
O
IN
A
SLOPE
IN
LOG
IN
A
P
P
V
P
V
P
Error
_
_
)
(
)
(
The log conformance error for Region B, which is from PIN2 to
the upper end of the input power range is as follows:
B
O
IN
B
SLOPE
IN
LOG
IN
B
P
P
V
P
V
P
Error
_
_
)
(
)
(
Figure 45. Error vs. PIN
For four calibration points, there are three regions of error
computed.
Filter Capacitor
The video bandwidth of VLOG is approximately 3.5 MHz. In CW
applications where the input frequency is much higher than
this, no further filtering of the demodulated signal is required.
Where there is a low frequency modulation of the carrier
amplitude, however, reduce the low-pass corner by the addition
of an external filter capacitor, CFLT. The video bandwidth is
related to CFLT by

F
C
Bandwidth
Video
pF
5
.
3
k
Ω
13
2
1
(PIN1, VLOG1)
0
0.2
0.4
0.6
0.8
1.0
1.2
–50 –45 –40 –35 –30 –25 –20 –15 –10
–50
5
PIN (dBm)
VLOG
VLOG CALCULATED
(PIN2, VLOG2)
(PIN3, VLOG3)
–3
–2
–1
0
1
2
3
–50 –45 –40 –35 –30 –25 –20 –15 –10
–50
5
PIN (dBm)
REGION B
REGION A



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com