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| 型號(hào)： | AD603ARZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 1/25頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP VGA 90MHZ LN 50MA 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 750 |
| 系列： | X-AMP® |
| 放大器類(lèi)型： | 可變?cè)鲆?br> |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 275 V/µs |
| -3db帶寬： | 90MHz |
| 電流 - 輸入偏壓： | 200nA |
| 電流 - 電源： | 12.5mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 9.5 V ~ 12.6 V，±4.75 V ~ 6.3 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 帶卷 (TR) |
| 配用： | AD603-EVALZ-ND - BOARD EVALUATION FOR AD603 |
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Low Noise, 90 MHz
Variable Gain Amplifier
Data Sheet
Rev.
K
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
Fax: 781.461.3113
1993–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Linear-in-dB gain control
Pin-programmable gain ranges
11 dB to +31 dB with 90 MHz bandwidth
9 dB to 51 dB with 9 MHz bandwidth
Any intermediate range, for example 1 dB to +41 dB
with 30 MHz bandwidth
Bandwidth independent of variable gain
1.3 nV/√Hz input noise spectral density
±0.5 dB typical gain accuracy
APPLICATIONS
RF/IF AGC amplifiers
Video gain controls
A/D range extensions
Signal measurements
GENERAL DESCRIPTION
The AD603 is a low noise, voltage-controlled amplifier for use
in RF and IF AGC systems. It provides accurate, pin-selectable
gains of 11 dB to +31 dB with a bandwidth of 90 MHz or +9 dB to
51+ dB with a bandwidth of 9 MHz. Any intermediate gain
range may be arranged using one external resistor. The input
referred noise spectral density is only 1.3 nV/√Hz, and power
consumption is 125 mW at the recommended ±5 V supplies.
The decibel gain is linear in dB, accurately calibrated, and stable
over temperature and supply. The gain is controlled at a high
impedance (50 MΩ), low bias (200 nA) differential input; the
scaling is 25 mV/dB, requiring a gain control voltage of only
1 V to span the central 40 dB of the gain range. An overrange
and underrange of 1 dB is provided whatever the selected range.
The gain control response time is less than 1 μs for a 40 dB change.
The differential gain control interface allows the use of either
differential or single-ended positive or negative control voltages.
Several of these amplifiers may be cascaded and their gain
control gains offset to optimize the system SNR.
The AD603 can drive a load impedance as low as 100 Ω with
low distortion. For a 500 Ω load in shunt with 5 pF, the total
harmonic distortion for a ±1 V sinusoidal output at 10 MHz is
typically 60 dBc. The peak specified output is ±2.5 V minimum
into a 500 Ω load.
The AD603 uses a patented proprietary circuit topology—the
X-AMP. The X-AMP comprises a variable attenuator of 0 dB
to 42.14 dB followed by a fixed-gain amplifier. Because of the
attenuator, the amplifier never has to cope with large inputs and
can use negative feedback to define its (fixed) gain and dynamic
performance. The attenuator has an input resistance of 100 Ω,
laser trimmed to ±3%, and comprises a 7-stage R-2R ladder
network, resulting in an attenuation between tap points of
6.021 dB. A proprietary interpolation technique provides a
continuous gain control function that is linear in dB.
The AD603 is specified for operation from 40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
SCALING
REFERENCE
VG
GAIN-
CONTROL
INTERFACE
AD603
PRECISION PASSIVE
INPUT ATTENUATOR
FIXED-GAIN
AMPLIFIER
*NOMINAL VALUES.
R-2R LADDER NETWORK
GPOS
GNEG
VINP
COMM
0dB
–6.02dB –12.04dB –18.06dB –24.08dB –30.1dB –36.12dB –42.14dB
RR
R
2R
R
20*
694*
6.44k*
VOUT
FDBK
00539-
001
Figure 1.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD603-EB | 制造商:Analog Devices 功能描述:Evaluation Board For Low Noise, 90 MHz Variable Gain Amplifier |
| AD603-EVALZ | 功能描述:BOARD EVALUATION FOR AD603 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 運(yùn)算放大器 系列:X-AMP® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| AD603SQ/883B | 功能描述:差分放大器 IC 90 MHz VARIABLE GAIN AMP RoHS:否 制造商:Analog Devices 通道數(shù)量:1 Channel 帶寬:900 MHz 可用增益調(diào)整:5.6 dB to 20 dB 輸入補(bǔ)償電壓:1 mV at 5 V 共模抑制比（最小值）:67 dB 工作電源電壓:11 V 電源電流:28 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| AD603SQ/883B2 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Low Noise, 90 MHz Variable Gain Amplifier |
| AD604 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Dual, Ultralow Noise Variable Gain Amplifier |
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