Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼
Nom de la pièce

AD8318 Datasheet(Fiches technique) 1 Page - Analog Devices

Numéro de pièce AD8318
Description  1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller
Télécharger  24 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  AD [Analog Devices]
Site Internet

 1 page
background image
1 MHz – 8 GHz, 60 dB
Logarithmic Detector/Controller
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its
use. Specifications subject to change without notice. No license is granted by
implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
© 2003 Analog Devices, Inc. All rights reserved.
Wide bandwidth: 1 MHz to 8 GHz
High accuracy: ±1.0 dB over 55 dB range (f < 5.8 GHz)
Stability over temperature: ±0.5 dB
Low noise measurement/controller output VOUT
Pulse response time 10/12 ns (fall/rise)
Integrated temperature sensor
Small footprint CSP package
Power-down feature: <1.5 mW at 5 V
Single-supply operation: 5V @ 68 mA
Fabricated using high speed SiGe process
RF transmitter PA setpoint control and level monitoring
RSSI measurement in base stations, WLAN, radar
The AD8318 is a demodulating logarithmic amplifier, capable of
accurately converting an RF input signal to a corresponding
decibel-scaled output voltage. It employs the progressive
compression technique over a cascaded amplifier chain, each
stage of which is equipped with a detector cell. The device can be
used in measurement or controller mode. The AD8318
maintains accurate log conformance for signals of 1 MHz to
6 GHz and provides useful operation to 8 GHz. The input range
is typically 60 dB (re: 50 Ω) with error less than ±1 dB. The
AD8318 has a 10 ns response time that enables RF burst
detection to beyond 60 MHz. The device provides
unprecedented logarithmic intercept stability versus ambient
temperature conditions. A 2 mV/K slope temperature sensor
output is also provided for additional system monitoring. A
single supply of +5 V is required. Current consumption is
typically 68 mA. Power consumption decreases to <1.5 mW
when the device is disabled.
The AD8318 can be configured to provide a control voltage to a
VGA, such as a power amplifier or a measurement output, from
pin VOUT. Since the output can be used for controller
Figure 1.
applications, special attention has been paid to minimize
wideband noise. In this mode, the setpoint control voltage is
applied to VSET. The feedback loop through an RF
amplifier is closed via VOUT; the output of which regulates
the amplifier’s output to a magnitude corresponding to VSET.
The AD8318 provides 0 V to 4.9 V output capability at the
VOUT pin, suitable for controller applications. As a
measurement device, VOUT is externally connected to
VSET to produce an output voltage VOUT that is a decreasing
linear-in-dB function of the RF input signal amplitude.
The logarithmic slope is nominally −25 mV/dB, but can be
adjusted by scaling the feedback voltage from VOUT to the
VSET interface. The intercept is +20 dBm (re: 50 Ω, CW
input) using the INHI input. These parameters are very
stable against supply and temperature variations.
The AD8318 is fabricated on a SiGe bipolar IC process and
is available in a 4 mm × 4 mm, 16-pin LFCSP package, for
the operating temperature range of –40oC to +85oC.

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 

Datasheet Download

Numéro de composants électroniques

Numéro de pièceDescription des composantsHtml ViewFabricant
CLY10GaAs FET Power amplifier for mobile phones For frequencies from 400 MHz to 2.5 GHz 1 2 3 4 5 MoreSiemens Semiconductor Group
VLFX-825Low Pass Filter DC to 825 MHz 40 dB Isolation up to 20 GHz 1 Mini-Circuits
ZX60-3018GConnectorized Amplifier 50ohm 20 MHz to 3 GHz 1 2 Mini-Circuits
S3-AA22XFrequency Range: 200 MHz to 1.7 GHz 1 2 Nel Frequency Controls,inc
CLY15GaAs FET Power amplifier for mobile phones For frequencies from 400 MHz to 2.5 GHz 1 2 3 4 5 MoreSiemens Semiconductor Group
VLFX-950Low Pass Filter DC to 950 MHz 40 dB Isolation up to 20 GHz 1 Mini-Circuits
LMX248550 MHz - 3.0 GHz High Performance Delta-Sigma Low Power Dual PLLatinum™ Frequency Synthesizers with 800 MHz Integer PLL 1 2 3 4 5 MoreNational Semiconductor (TI)
292020 MHz BIPOLAR LOGARITHMIC AMPLIFIER 1 2 3 4 5 MoreList of Unclassifed Manufacturers
VLFX-1050Low Pass Filter DC to 1050 MHz 40 dB Isolation up to 20 GHz 1 Mini-Circuits
291010 MHz BIPOLAR LOGARITHMIC AMPLIFIER 1 2 3 4 5 MoreList of Unclassifed Manufacturers

Lien URL

AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Favoris   |   Echange de liens   |   Fabricants
All Rights Reserved ©

Mirror Sites
English :  ,  |   Chinese :  |   German :  |   Japanese :  |   Russian :
Korean :   |   Spanish :  |   French :  |   Italian :  |   Portuguese :  |   Polish :