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| 型號(hào)： | AD8367ARU |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VGA 14TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | X-AMP® |
| 放大器類(lèi)型： | 可變?cè)鲆?br> |
| 電路數(shù)： | 1 |
| -3db帶寬： | 500MHz |
| 電流 - 輸入偏壓： | 27µA |
| 電流 - 電源： | 26mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-TSSOP |
| 包裝： | 管件 |
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500 MHz, Linear-in-dB VGA
with AGC Detector
AD8367
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
Broad-range analog variable gain: 2.5 dB to +42.5 dB
3 dB cutoff frequency of 500 MHz
Gain up and gain down modes
Linear-in-dB, scaled 20 mV/dB
Resistive ground referenced input
Nominal ZIN = 200 Ω
On-chip, square-law detector
Single-supply operation: 2.7 V to 5.5 V
APPLICATIONS
Cellular base stations
Broadband access
Power amplifier control loops
Complete, linear IF AGC amplifiers
High speed data I/O
FUNCTIONAL BLOCK DIAGRAM
02710-
001
VPSI
12
VPSO
11
ENBL
2
DETO
6
GAIN
5
MODE
4
ICOM
14
ICOM 1
INPT 3
ICOM 7
DECL
9
HPFL
13
VOUT
10
OCOM
8
9-STAGE ATTENUATOR BY 5dB
GAUSSIAN INTERPOLATOR
BIAS
SQUARE
LAW
DETECTOR
gm
CELLS
AD8367
Figure 1.
GENERAL DESCRIPTION
The AD8367 is a high performance 45 dB variable gain
amplifier with linear-in-dB gain control for use from low
frequencies up to several hundred megahertz. The range,
flatness, and accuracy of the gain response are achieved using
Analog Devices’ X-AMP architecture, the most recent in a
series of powerful proprietary concepts for variable gain
applications, which far surpasses what can be achieved using
competing techniques.
The input is applied to a 9-stage, 200 Ω resistive ladder network.
Each stage has 5 dB of loss, giving a total attenuation of 45 dB.
At maximum gain, the first tap is selected; at progressively
lower gains, the tap moves smoothly and continuously toward
higher attenuation values. The attenuator is followed by a
42.5 dB fixed gain feedback amplifier—essentially an
operational amplifier with a gain bandwidth product of
100 GHz—and is very linear, even at high frequencies. The
output third order intercept is +20 dBV at 100 MHz (+27 dBm,
re 200 Ω), measured at an output level of 1 V p-p with VS = 5 V.
The analog gain-control input is scaled at 20 mV/dB and runs
from 50 mV to 950 mV. This corresponds to a gain of 2.5 dB
to +42.5 dB, respectively, when the gain up mode is selected and
+42.5 dB to 2.5 dB, respectively, when gain down mode is
selected. The gain down, or inverse, mode must be selected
when operating in AGC in which an integrated square-law
detector with an internal setpoint is used to level the output to
354 mV rms, regardless of the crest factor of the output signal.
A single external capacitor sets up the loop averaging time.
The AD8367 can be powered on or off by a voltage applied to
the ENBL pin. When this voltage is at a logic LO, the total
power dissipation drops to the milliwatt range. For a logic HI,
the chip powers up rapidly to its normal quiescent current of
26 mA at 25°C. The AD8367 is available in a 14-lead TSSOP
package for the industrial temperature range of 40°C to +85°C.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8367ARU-REEL | 制造商:Analog Devices 功能描述: |
| AD8367ARU-REEL7 | 功能描述:IC AMP VGA 14TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:150 系列:- 放大器類(lèi)型:音頻 電路數(shù):2 輸出類(lèi)型:- 轉(zhuǎn)換速率:5 V/µs 增益帶寬積:12MHz -3db帶寬:- 電流 - 輸入偏壓:100nA 電壓 - 輸入偏移:500µV 電流 - 電源:6mA 電流 - 輸出 / 通道:50mA 電壓 - 電源，單路/雙路(±):4 V ~ 32 V，±2 V ~ 16 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| AD8367ARU-REEL-7 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:500 MHz, Linear-in-dB VGA with AGC Detector |
| AD8367ARUZ | 功能描述:IC AMP VGA 14TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類(lèi)型:通用 電路數(shù):4 輸出類(lèi)型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱(chēng):LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD8367ARUZ | 制造商:Analog Devices 功能描述:PROGRAMMABLE GAIN AMPLIFIER IC ((NW)) |
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