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AD8363ACPZ-WP 数据表(PDF) 11 Page - Analog Devices

部件名 AD8363ACPZ-WP
功能描述  50 Hz to 6 GHz 50 dB TruPwr Detector
Download  14 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8363ACPZ-WP 数据表(HTML) 11 Page - Analog Devices

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Preliminary Technical Data
AD8363
Rev. PrB | Page 11 of 14
Table 4. Pin Function Descriptions
Component
Function/Notes
Default Value
C6, C10, C11,
C12
Input:
The AD8363 was designed to be driven single ended. At frequencies below 2.6 GHz, more
dynamic range can be achieved by driving Pin 14 (INHI). In order to do this, C10 and C12
should be populated with an appropriate valued capacitor for the frequency of operation. C6
and C11 should be left open. For frequencies above 2.6 GHz, greater dynamic range can be
achieved by Driving Pin 15 (INLO). This can be done by using an appropriate valued capacitor
for C6 and C11, while leaving C10 and C12 open.
C10=0.1uF, C12=0.1uF,
C6=Open, C11=Open
R7, R10, R11
VTGT:
R10 and R11 are set up to provide 1.4V to VTGT from VREF. An external voltage can be used if
R10 and R11 are removed.
R10=845Ω, R11= 1.4KΩ
C4, C5, C7, C13,
R14, R16
Power Supply Decoupling:
The nominal supply decoupling consists of a 100 pF filter capacitor placed physically close to
the AD8363, a 0 Ω series resistor, and a 0.1 uF capacitor placed closer to the power supply
input pin. The 0 Ω resistor can be replaced with a larger value resistor to add more filtering, at
the expense of a voltage drop.
C4=100 pF, C5=100 pF,
C7= 0.1uF, C13= 0.1uF,
R14= 0 Ω, R16= 0 Ω
R1, R2, R6, R13,
R15
Output Interface--Measurement Mode:
In measurement mode, a portion of the output voltage is fed back to the VSET pin via R6. The
magnitude of the slope at VOUT can be increased by reducing the portion of VOUT that is fed
back to VSET, using a voltage divider created by R6 and R2 . If a fast responding output is
expected, the 0 Ω resistor on R15 can be removed to reduce parasitics on the output.
R1=0 Ω, R2=Open,
R6=0 Ω, R13 = Open ,
R15 = 0 Ω
Output Interface--Controller Mode:
In this mode, R6 must be open and R13 must have a 0 Ω resistor. In controller mode, the
AD8363 can control the gain of an external component. A setpoint voltage is applied to the
VSET pin, the value of which corresponds to the desired RF input signal level applied to the
AD8363 RF input. If a fast responding output is expected, the 0 Ω resistor on R15 can be
removed to reduce parasitics on the output.
C9, C8, R5
Low-pass filter capacitors:
The low-pass filter capacitors reduce the noise on the output and affect the pulse response
time of the AD8363. The smallest CLPF capacitance should be 400 pF
C8=Open, C9=0.1uF,
R5=0 Ω
C3
CHPF capacitor
The CHPF capacitor introduces a high-pass filter effect into the AD8363 transfer function and
can affect the response time. It should be tied to VPOS.
C3= 2700 pF
R9, R12
TCM2/PWDN:
The TCM2/PWDN pin controls the amount of nonlinear intercept temperature compensation
and/or shuts down the device. The evaluation board is configured to control this from a test
loop but VREF can be used through a voltage divider created from R9 and R12.
R9= Open, R12= Open
R17, R18
TCM1:
TCM1 controls the intercept temperature compensation (3K impedance). The evaluation board
is configured to control this from a test loop but VREF can be used through a voltage divider
created from R17 and R18
R17=Open, R18=Open
Paddle
The paddle should be tied to both a thermal and electrical ground


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