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ADA4899-1_07

更新时间： 2024-11-23 04:31:15
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器
页数 文件大小 规格书
20页 655K
描述
Unity-Gain Stable, Ultralow Distortion, 1 nV/☆Hz Voltage Noise, High Speed Op Amp

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ADA4899-1_07 数据手册

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Unity-Gain Stable, Ultralow Distortion,  
1 nV/√Hz Voltage Noise, High Speed Op Amp  
ADA4899-1  
FEATURES  
CONNECTION DIAGRAMS  
Unity-gain stable  
ADA4899-1  
1
2
3
4
8
7
6
5
DISABLE  
FEEDBACK  
–IN  
+V  
S
Ultralow noise: 1 nV/√Hz, 2.6 pA/√Hz  
Ultralow distortion −117 dBc at 1 MHz  
High speed  
−3 dB bandwidth: 600 MHz (G = +1)  
Slew rate: 310 V/μs  
V
OUT  
NC  
–V  
+IN  
S
Offset voltage: 230 μV maximum  
Low input bias current: 100 nA  
Wide supply voltage range: 5 V to 12 V  
Supply current: 14.7 mA  
High performance pinout  
Disable mode  
NC = NO CONNECT  
Figure 1. 8-Lead LFCSP_VD (CP-8-2)  
ADA4899-1  
1
2
3
4
8
7
6
5
FEEDBACK  
–IN  
DISABLE  
+V  
S
+IN  
V
OUT  
APPLICATIONS  
–V  
–V  
S
S
Analog-to-digital drivers  
Instrumentation  
Filters  
Figure 2. 8-Lead SOIC_N_EP (RD-8-1)  
IF and baseband amplifiers  
DAC buffers  
Optical electronics  
GENERAL DESCRIPTION  
The ADA4899-1 is an ultralow noise (1 nV/√Hz) and distortion  
(<−117 dBc @1 MHz) unity-gain stable voltage feedback op  
amp, the combination of which makes it ideal for 16-bit and  
18-bit systems. The ADA4899-1 features a linear, low noise  
input stage and internal compensation that achieves high slew  
rates and low noise even at unity gain. The Analog Devices, Inc.  
proprietary next-generation XFCB process and innovative  
circuit design enable such high performance amplifiers.  
The ADA4899-1 is available in a 3 mm × 3 mm LFCSP and an  
8-lead SOIC package. Both packages feature an exposed metal  
paddle that improves heat transfer to the ground plane, which is  
a significant improvement over traditional plastic packages. The  
ADA4899-1 is rated to work over the extended industrial  
temperature range, −40°C to +125°C.  
–40  
G = +1  
V
R
V
= ±5V  
= 1kΩ  
S
–50  
–60  
L
= 2V p-p  
OUT  
The ADA4899-1 drives 100 Ω loads at breakthrough performance  
levels with only 15 mA of supply current. With the wide supply  
voltage range (4.5 V to 12 V), low offset voltage (230 μV maxi-  
mum), wide bandwidth (600 MHz), and slew rate (310 V/μs),  
the ADA4899-1 is designed to work in the most demanding  
applications. The ADA4899-1 also features an input bias current  
cancellation mode that reduces input bias current by a factor of 60.  
–70  
–80  
HD3  
–90  
HD2  
–100  
–110  
–120  
–130  
0.1  
1
10  
FREQUENCY (MHz)  
100  
Figure 3. Harmonic Distortion vs. Frequency  
Rev. B  
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 registeredtrademarks arethe property of their respective owners.  
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 ©2005–2007 Analog Devices, Inc. All rights reserved.  
 
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