AD8318-EVAL

更新时间： 2024-09-26 22:38:31

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
24页	2128K
描述
1 MHz - 8 GHz, 60 dB Logarithmic Detector/Controller

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中文翻译

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数据手册

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AD8318-EVAL 数据手册

1 MHz – 8 GHz, 60 dB

Logarithmic Detector/Controller

AD8318

FUNCTIONAL BLOCK DIAGRAM

FEATURES

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

VPSI

ENBL

TADJ

VPSO

TEMP

SENSOR

GAIN

BIAS

TEMP

SLOPE

VSET

VOUT

CLPF

Small footprint CSP package

DET

Power-down feature: <1.5 mW at 5 V

Single-supply operation: 5V @ 68 mA

Fabricated using high speed SiGe process

INHI

INLO

APPLICATIONS

CMIP

CMOP

RF transmitter PA setpoint control and level monitoring

Figure 1.

RSSI measurement in base stations, WLAN, radar

GENERAL DESCRIPTION

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

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.

amplifier is closed via VOUT; the output of which regulates

the amplifier’s output to a magnitude corresponding to V_SET

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 V_OUTthat 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 –40^oC to +85^oC.

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

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

owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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与AD8318-EVAL相关器件

型号	品牌	获取价格	描述	数据表
AD8318-EVALZ	ADI	获取价格	1 MHz to 8 GHz, 70 dB Logarithmic Detector/Controller
AD8319	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319_07	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319ACPZ-R2	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319ACPZ-R7	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319ACPZ-WP	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319-EVAL	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD8319-EVALZ	ADI	获取价格	1 MHz to 10 GHz, 40 dB Log Detector/Controller
AD831AP	ADI	获取价格	Low Distortion Mixer
AD831AP-REEL7	ROCHESTER	获取价格	RF/MICROWAVE DOUBLE BALANCED MIXER

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