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ADA4857-1

更新时间： 2024-11-28 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 588K
描述
Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp

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ADA4857-1 数据手册

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Ultralow Distortion, Low Power,  
Low Noise, High Speed Op Amp  
ADA4857-1/ADA4857-2  
FEATURES  
CONNECTION DIAGRAMS  
ADA4857-1  
High speed  
TOP VIEW  
(Not to Scale)  
850 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, LFSCP)  
750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)  
2800 V/μs slew rate  
Low distortion: −88 dBc @ 10 MHz (G = +1, RL = 1 kΩ)  
Low power: 5 mA/amplifier @ 10 V  
Low noise: 4.4 nV/√Hz  
PD  
FB  
1
2
3
4
8
7
6
5
+V  
S
OUT  
NC  
–IN  
+IN  
–V  
S
NC = NO CONNECT  
Wide supply voltage range: 5 V to 10 V  
Power-down feature  
Figure 1. 8-Lead LFCSP (CP)  
Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC  
(single), and 4 mm × 4 mm 16-lead LFCSP (dual)  
ADA4857-1  
TOP VIEW  
(Not to Scale)  
FB  
1
2
3
4
8
7
6
5
PD  
+V  
APPLICATIONS  
–IN  
+IN  
S
Instrumentation  
IF and baseband amplifiers  
Active filters  
OUT  
NC  
–V  
S
NC = NO CONNECT  
ADC drivers  
Figure 2. 8-Lead SOIC (R)  
DAC buffers  
ADA4857-2  
TOP VIEW  
(Not to Scale)  
12 –V  
–IN1 1  
+IN1 2  
NC 3  
S1  
11 NC  
10 +IN2  
–V  
4
9 –IN2  
S2  
NC = NO CONNECT  
Figure 3. 16-Lead LFCSP (CP)  
GENERAL DESCRIPTION  
The ADA4857 is a unity gain stable, high speed, voltage feedback  
amplifier with low distortion, low noise, and high slew rate. With a  
spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz,  
the ADA4857 is an ideal solution in a variety of applications  
including ultrasounds, ATE, active filters, and ADC drivers.  
The Analog Devices, Inc., proprietary next-generation XFCB  
process and innovative architecture enables such high performance  
amplifiers.  
The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and  
settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to  
10 V), the ADA4857 is an ideal candidate for systems that require  
high dynamic range, precision, and speed.  
The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead  
LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in  
a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed  
paddle that provides a low thermal resistance path to the PCB. This  
path enables more efficient heat transfer and increases reliability.  
The ADA4857 works over the extended industrial temperature  
range (−40°C to +125°C).  
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 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  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  
 
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