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| 型號： | AD600JNZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/33頁 |
| 文件大小： | 0K |
| 描述： | IC AMP VGA DUAL LN 50MA 16DIP |
| 標準包裝： | 25 |
| 系列： | X-AMP® |
| 放大器類型： | 可變增益 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 275 V/µs |
| -3db帶寬： | 35MHz |
| 電流 - 輸入偏壓： | 350nA |
| 電流 - 電源： | 11mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.75 V ~ 5.25 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應商設(shè)備封裝： | 16-PDIP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 774 (CN2011-ZH PDF) |
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Dual, Low Noise, Wideband
Variable Gain Amplifiers
AD600/AD602
Rev. F
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
www.analog.com
Fax: 781.461.3113
2008 Analog Devices, Inc. All rights reserved.
FEATURES
2 channels with independent gain control
Linear in dB gain response
2 gain ranges
AD600: 0 dB to 40 dB
AD602: –10 dB to +30 dB
Accurate absolute gain: ±0.3 dB
Low input noise: 1.4 nV/√Hz
Low distortion: 60 dBc THD at ±1 V output
High bandwidth: dc to 35 MHz (3 dB)
Stable group delay: ±2 ns
Low power: 125 mW (maximum) per amplifier
Signal gating function for each amplifier
Drive high speed ADCs
MIL-STD-883-compliant and DESC versions available
APPLICATIONS
Ultrasound and sonar time-gain controls
High performance audio and RF AGC systems
Signal measurement
GENERAL DESCRIPTION
The AD600/AD6021 dual-channel, low noise, variable gain
amplifiers are optimized for use in ultrasound imaging systems
but are applicable to any application requiring precise gain, low
noise and distortion, and wide bandwidth. Each independent
channel provides a gain of 0 dB to +40 dB in the AD600 and
10 dB to +30 dB in the AD602. The lower gain of the AD602
results in an improved signal-to-noise ratio (SNR) at the output.
However, both products have the same 1.4 nV/√Hz input noise
spectral density. The decibel gain is directly proportional to the
control voltage, accurately calibrated, and supply and temper-
ature stable.
To achieve the difficult performance objectives, a proprietary
circuit form, the X-AMP, was developed. Each channel of the
X-AMP comprises a variable attenuator of 0 dB to 42.14 dB
followed by a high speed fixed gain amplifier. In this way, the
amplifier never has to cope with large inputs and can benefit
from the use of negative feedback to precisely define the gain
and dynamics. The attenuator is realized as a 7-stage R-2R
ladder network having an input resistance of 100 Ω, laser
trimmed to ±2%. The attenuation between tap points is 6.02 dB;
the gain-control circuit provides continuous interpolation between
these taps. The resulting control function is linear in dB.
1 Patented.
FUNCTIONAL BLOCK DIAGRAM
PRECISION PASSIVE
INPUT ATTENUATOR
GATING
INTERFACE
SCALING
REFERENCE
GAT1
A1OP
A1CM
C1HI
C1LO
A1HI
A1LO
VG
R-2R LADDER NETWORK
GAIN CONTROL
INTERFACE
RF2
2.24k
(AD600)
694
(AD602)
RF1
20
FIXED-GAIN
AMPLIFIER
41.07dB (AD600)
31.07dB (AD602)
500
0dB
–6.02dB
–12.04dB
–18.06dB
–22.08dB
–30.1dB
–36.12dB
–42.14dB
62.5
0
053
8-
0
01
Figure 1. Functional Block Diagram of a Single Channel of the AD600/AD602
The gain-control interfaces are fully differential, providing an
input resistance of ~15 MΩ and a scale factor of 32 dB/V (that
is, 31.25 mV/dB) defined by an internal voltage reference. The
response time of this interface is less than 1 μs. Each channel
also has an independent gating facility that optionally blocks
signal transmission and sets the dc output level to within a few
millivolts of the output ground. The gating control input is
TTL- and CMOS-compatible.
The maximum gain of the AD600 is 41.07 dB, and the maximum
gain of the AD602 is 31.07 dB; the 3 dB bandwidth of both
models is nominally 35 MHz, essentially independent of the
gain. The SNR for a 1 V rms output and a 1 MHz noise
bandwidth is typically 76 dB for the AD600 and 86 dB for the
AD602. The amplitude response is flat within ±0.5 dB from
100 kHz to 10 MHz; over this frequency range, the group delay
varies by less than ±2 ns at all gain settings.
Each amplifier channel can drive 100 Ω load impedances with
low distortion. For example, the peak specified output is ±2.5 V
minimum into a 500 Ω load or ±1 V into a 100 Ω load. For a
200 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 AD600J/AD602J are specified for operation from 0°C to 70°C
and are available in 16-lead PDIP (N) and 16-lead SOIC packages.
The AD600A/AD602A are specified for operation from 40°C to
+85°C and are available in 16-lead CERDIP (Q) and 16-lead SOIC
packages. The AD600S/AD602S are specified for operation from
55°C to +125°C, are available in a 16-lead CERDIP (Q) package,
and are MIL-STD-883-compliant. The AD600S/AD602S are also
available under DESC SMD 5962-94572.
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| AD600JR | 功能描述:IC AMP VGA DUAL LN 50MA 16SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
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| AD600JR-REEL7 | 功能描述:IC AMP VGA DUAL LN 50MA 16SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
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| AD600JRZ | 制造商:Analog Devices 功能描述:IC, VARIABLE GAIN AMP, 35MHZ, 1DB SOIC16 |
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