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

X  

AD8319ACPZ-R7 数据表(PDF) 11 Page - Analog Devices

部件名 AD8319ACPZ-R7
功能描述  1 MHz to 10 GHz, 40 dB Log Detector/Controller
Download  20 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

AD8319ACPZ-R7 数据表(HTML) 11 Page - Analog Devices

Back Button AD8319ACPZ-R7 Datasheet HTML 7Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 8Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 9Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 10Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 11Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 12Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 13Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 14Page - Analog Devices AD8319ACPZ-R7 Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
AD8319
Rev. 0 | Page 11 of 20
USING THE AD8319
BASIC CONNECTIONS
The AD8319 is specified for operation up to 10 GHz, as a result,
low impedance supply pins with adequate isolation between
functions are essential. A power supply voltage of between 3.0 V
and 5.5 V should be applied to VPOS. Power supply decoupling
capacitors of 100 pF and 0.1 μF should be connected close to
this power supply pin.
AD8319
1
2
3
4
8
7
6
5
SEE TEXT
SEE TEXT
SIGNAL
INPUT
R1
52.3
Ω
R2
0
Ω
R4
0
Ω
VOUT
C2
C1
C5
C4
47nF
47nF
0.1
μF
100pF
VS(2.7V–5.5V)
INHI
INLO
VPOS
TADJ
VOUT
COMM
CLPF
VSET
Figure 22. Basic Connections
The paddle of the LFCSP package is internally connected to
COMM. For optimum thermal and electrical performance, the
paddle should be soldered to a low impedance ground plane.
INPUT SIGNAL COUPLING
The RF input (INHI) is single-ended and must be ac-coupled.
INLO (input common) should be ac-coupled to ground.
Suggested coupling capacitors are 47 nF ceramic 0402-style
capacitors for input frequencies of 1 MHz to 10 GHz. The
coupling capacitors should be mounted close to the INHI and
INLO pins. The coupling capacitor values can be increased to
lower the input stage’s high-pass cutoff frequency. The high-
pass corner is set by the input coupling capacitors and the
internal 10 pF high-pass capacitor. The dc voltage on INHI and
INLO is about one diode voltage drop below VPOS.
VPOS
2k
Ω
A = 9dB
18.7k
Ω
18.7k
Ω
CURRENT
Gm
STAGE
INLO
INHI
OFFSET
COMP
5pF
5pF
FIRST
GAIN
STAGE
Figure 23. Input Interface
While the input can be reactively matched, in general this is not
necessary. An external 52.3 Ω shunt resistor (connected on the
signal side of the input coupling capacitors, as shown in Figure 22)
combines with the relatively high input impedance to give an
adequate broadband 50 Ω match.
The coupling time constant, 50 × CC/2, forms a high-pass
corner with a 3 dB attenuation at fHP = 1/(2π × 50 × CC ), where
C1 = C2 = CC. Using the typical value of 47 nF, this high-pass
corner will be ~68 kHz. In high frequency applications, fHP
should be as large as possible to minimize the coupling of
unwanted low frequency signals. In low frequency applications,
a simple RC network forming a low-pass filter should be added
at the input for similar reasons. This should generally be placed
at the generator side of the coupling capacitors, thereby
lowering the required capacitance value for a given high-pass
corner frequency.
OUTPUT INTERFACE
The VOUT pin is driven by a PNP output stage. An internal 10 Ω
resistor is placed in series with the output and the VOUT pin.
The rise time of the output is limited mainly by the slew on
CLPF. The fall time is an RC-limited slew given by the load
capacitance and the pull-down resistance at VOUT. There is an
internal pull-down resistor of 1.6 kΩ. A resistive load at VOUT
is placed in parallel with the internal pull-down resistor to
provide additional discharge current.
+
0.8V
1200
Ω
400
Ω
10
Ω
VOUT
VPOS
CLPF
COMM
Figure 24. Output Interface
To reduce the fall time, VOUT should be loaded with a resistive
load of <1.6 kΩ. For example, with an external load of 150 Ω
the AD8319 fall time is <7 ns.
SETPOINT INTERFACE
The VSET input drives the high impedance (20 kΩ) input of an
internal op amp. The VSET voltage appears across the internal
1.5 kΩ resistor to generate ISET. When a portion of VOUT is
applied to VSET, the feedback loop forces
−ID × log10(VIN/VINTERCEPT) = ISET.
If VSET = VOUT/2x, then ISET = VOUT/(2x × 1.5 kΩ).
The result is
VOUT = (−ID × 1.5 kΩ × 2x) × log10(VIN/VINTERCEPT)


类似零件编号 - AD8319ACPZ-R7

制造商部件名数据表功能描述
logo
Analog Devices
AD8319ACPZ-R7 AD-AD8319ACPZ-R7 Datasheet
1Mb / 20P
   1 MHz to 10 GHz, 40 dB Log Detector/Controller
REV. A
AD8319ACPZ-R7 AD-AD8319ACPZ-R7 Datasheet
1Mb / 19P
   1 MHz to 10 GHz, 45 dB Log Detector/Controller
More results

类似说明 - AD8319ACPZ-R7

制造商部件名数据表功能描述
logo
Analog Devices
AD8319 AD-AD8319_07 Datasheet
1Mb / 20P
   1 MHz to 10 GHz, 40 dB Log Detector/Controller
REV. A
AD8317 AD-AD8317 Datasheet
1Mb / 20P
   1 MHz to 10 GHz, 50 dB Log Detector/Controller
REV. 0
AD8317 AD-AD8317_08 Datasheet
780Kb / 20P
   1 MHz to 10 GHz, 55 dB Log Detector/Controller
REV. B
AD8319 AD-AD8319_15 Datasheet
1,004Kb / 20P
   1 MHz to 10 GHz, 45 dB Log Detector/Controller
REV. C
AD8319 AD-AD8319_17 Datasheet
1Mb / 19P
   1 MHz to 10 GHz, 45 dB Log Detector/Controller
ADL5519 AD-ADL5519_17 Datasheet
3Mb / 39P
   1 MHz to 10 GHz, 62 dB Dual Log Detector/Controller
ADL5519 AD-ADL5519 Datasheet
654Kb / 27P
   1 MHz to 10 GHz, 50 dB Dual Log Detector/Controller
Rev. PrB
ADL5519 AD-ADL5519_08 Datasheet
3Mb / 40P
   1 MHz to 10 GHz, 62 dB Dual Log Detector/Controller
REV. 0
AD8318 AD-AD8318_07 Datasheet
1Mb / 24P
   1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
REV. B
ADL5513 AD-ADL5513_08 Datasheet
1Mb / 28P
   1 MHz to 4 GHz, 80 dB Logarithmic Detector/Controller
REV. 0
More results


Html Pages

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


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
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   |   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