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ADA4870ARR-EBZ

更新时间： 2024-11-29 01:19:07
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
25页 734K
描述
Ideal for driving high capacitive or low resistive loads

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High Speed, High Voltage,  
1 A Output Drive Amplifier  
ADA4870  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Ideal for driving high capacitive or low resistive loads  
Wide supply range: 10 V to 40 V  
High output current drive: 1 A  
Wide output voltage swing: 37 V swing with 40 V supply  
High slew rate: 2500 V/µs  
High bandwidth: 52 MHz large signal, 70 MHz small signal  
Low noise: 2.1 nV/√Hz  
Quiescent current: 32.5 mA  
1
2
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
V
V
CC  
CC  
V
TFL  
SD  
ADA4870  
CC  
CC  
3
V
4
OUT  
OUT  
OUT  
OUT  
ON  
5
NC  
6
INP  
INN  
OUT  
NC  
7
Power down: 0.75 mA  
Short-circuit protection and flag  
Current limit: 1.2 A  
8
V
EE  
9
V
EE  
10  
V
V
EE  
EE  
Thermal protection  
Figure 1.  
APPLICATIONS  
Envelope tracking  
Power FET driver  
Ultrasound  
Piezo drivers  
PIN diode drivers  
Waveform generation  
Automated test equipment (ATE)  
CCD panel drivers  
Composite amplifiers  
GENERAL DESCRIPTION  
The ADA4870 is a unity gain stable, high speed current  
feedback amplifier capable of delivering 1 A of output current  
and 2500 V/μs slew rate from a 40 V supply. Manufactured  
using the Analog Devices, Inc., proprietary high voltage extra  
fast complementary bipolar (XFCB) process, the innovative  
architecture of the ADA4870 enables high output power, high  
speed signal processing solutions in applications that require  
driving a low impedance load.  
20  
15  
10  
5
4,000  
3,000  
2,000  
1,000  
0
V
OUT  
SLEW RATE  
0
The ADA4870 is ideal for driving high voltage power FETs,  
piezo transducers, PIN diodes, CCD panels, and a variety of  
other demanding applications that require high speed from  
high supply voltage at high output current.  
–5  
–10  
–15  
–20  
–1,000  
–2,000  
–3,000  
–4,000  
The ADA4870 is available in a power SOIC package (PSOP_3),  
featuring an exposed thermal slug that provides high thermal  
conductivity, enabling efficient heat transfer for improved perfor-  
mance and reliability in demanding applications. The ADA4870  
operates over the industrial temperature range (−40°C to +85°C).  
TIME (45ns/DIV)  
Figure 2. Slew Rate, VS = 20 V, VOUT = 30 V p-p, AV = +2,  
RF = 1.5 kΩ, CL = 300 pF, RS = 5 Ω  
Rev. 0  
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 registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Technical Support  
©2014 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
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