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ADA4857-1_17 PDF预览

ADA4857-1_17

更新时间： 2024-11-05 01:19:07
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亚德诺 - ADI /
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21页 552K
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Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp

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ADA4857-1_17 数据手册

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Ultralow Distortion, Low Power,  
Low Noise, High Speed Op Amp  
ADA4857-1/ADA4857-2  
Data Sheet  
FEATURES  
CONNECTION DIAGRAMS  
ADA4857-1  
High speed  
TOP VIEW  
(Not to Scale)  
850 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, LFCSP)  
750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)  
2800 V/μs slew rate  
Low distortion: −88 dBc at 10 MHz (G = +1, RL = 1 kΩ)  
Low power: 5 mA/amplifier at 10 V  
Low noise: 4.4 nV/√Hz  
Wide supply voltage range: 5 V to 10 V  
Power-down feature  
Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC  
(single), and 4 mm × 4 mm 16-lead LFCSP (dual)  
PD  
FB  
1
2
3
4
8
7
6
5
+V  
S
OUT  
NC  
–IN  
+IN  
–V  
S
NOTES  
1. NC = NO CONNECT. DO NOT CONNECT  
TO THIS PIN.  
2. THE EXPOSED PAD MAY BE CONNECTED  
TO GND OR VS.  
Figure 1. 8-Lead LFCSP (CP)  
ADA4857-1  
APPLICATIONS  
TOP VIEW  
(Not to Scale)  
Instrumentation  
IF and baseband amplifiers  
Active filters  
FB  
–IN  
+IN  
1
2
3
4
8
7
6
5
PD  
+V  
S
OUT  
NC  
ADC drivers  
–V  
S
DAC buffers  
NC = NO CONNECT  
Figure 2. 8-Lead SOIC (R)  
ADA4857-2  
TOP VIEW  
(Not to Scale)  
–IN1  
+IN1  
NC  
1
2
3
4
12 –V  
S1  
11 NC  
10  
9
+IN2  
–IN2  
–V  
S2  
NOTES  
1. NC = NO CONNECT. DO NOT CONNECT  
TO THIS PIN.  
2. THE EXPOSED PAD MAY BE CONNECTED  
TO GND OR VS.  
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 at 10 MHz, the  
ADA4857 is an ideal solution for 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.  
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 LFCSP. The LFCSP features an exposed  
paddle that provides a low thermal resistance path to the printed  
circuit board (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).  
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  
Rev. D  
Document Feedback  
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 ©2008–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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