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ADA4805-2TRMZ-EPR7

更新时间： 2024-11-04 20:56:27
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亚德诺 - ADI 放大器光电二极管
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9页 224K
描述
Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier

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ADA4805-2TRMZ-EPR7 数据手册

 浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第2页浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第3页浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第4页浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第5页浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第6页浏览型号ADA4805-2TRMZ-EPR7的Datasheet PDF文件第7页 
0.4 µV/°C Offset Drift, 105 MHz Low Power,  
Low Noise, Rail-to-Rail Amplifier  
Enhanced Product  
ADA4805-2-EP  
FEATURES  
TYPICAL APPLICATIONS CIRCUIT  
+7.5V  
Low input offset voltage: 125 µV (maximum)  
Low input offset voltage drift  
0.4 µV/°C (typical)  
5V REF  
ADA4805-2-EP  
ADR435  
VDD  
C4  
100nF  
C2  
10µF  
C3  
0.1µF  
2.7 µV/°C (maximum)  
Ultralow supply current: 500 µA per amplifier  
Fully specified at VS = 3 V, 5 V, 5 V  
High speed performance  
−3 dB bandwidth: 105 MHz  
Slew rate: 160 V/µs  
+7.5V  
0V TO  
REF  
ADA4805-2-EP  
REF VDD  
V
IN+  
IN–  
R3  
20Ω  
AD7980  
GND  
Settling time to 0.1%: 35 ns  
Rail-to-rail outputs  
C1  
2.7nF  
Input common-mode range: −VS − 0.1 V to +VS − 1 V  
Low noise: 5.9 nV/√Hz at 100 kHz; 0.6 pA/√Hz at 100 kHz  
Low distortion: −102 dBc/−126 dBc HD2/HD3 at 100 kHz  
Low input bias current: 470 nA (typical)  
Small packaging  
Figure 1. Driving the AD7980 with the ADA4805-2-EP  
The Analog Devices, Inc., proprietary extra fast complementary  
bipolar (XFCB) process allows both low voltage and low current  
noise (5.9 nV/√Hz, 0.6 pA/√Hz). The ADA4805-2-EP operates  
over a wide range of supply voltages from 1.5 V to 5 V, as well as  
single 3 V and 5 V supplies, making it ideal for high speed, low  
power instruments.  
8-lead MSOP  
ENHANCED PRODUCT FEATURES  
Supports defense and aerospace applications (AQEC standard)  
Extended industrial temperature range (−55°C to +125°C)  
Controlled manufacturing baseline  
1 assembly/test site  
1 fabrication site  
Enhanced product change notification  
Qualification data available upon request  
The ADA4805-2-EP is available in an 8-lead MSOP package and is  
rated to work over the extended industrial temperature range of  
−55°C to +125°C. Additional application and technical infor-  
mation can be found in the ADA4805-1/ADA4805-2 data sheet.  
0
INPUT FREQUENCY = 10kHz  
SNR = 89.4dB  
–20  
THD = 104dB  
SINAD = 89.3dB  
–40  
APPLICATIONS  
High resolution, high precision analog-to-digital converter  
(ADC) drivers  
–60  
–80  
Battery-powered instrumentation  
Micropower active filters  
Portable point of sales terminals  
Active radio frequency identification (RFID) readers  
Photomultipliers  
–100  
–120  
–140  
–160  
–180  
ADC reference buffers  
0
10  
20  
30  
40  
50  
60  
70  
80  
GENERAL DESCRIPTION  
FREQUENCY (kHz)  
The ADA4805-2-EP is a high speed voltage feedback, rail-to-rail  
output amplifier with an exceptionally low quiescent current of  
500 µA, making it ideal for low power, high resolution data  
conversion systems. Despite being low power, this amplifier  
provides excellent overall performance. It offers a high bandwidth  
of 105 MHz at a gain of +1, a high slew rate of 160 V/µs, and a  
low input offset voltage of 125 µV (maximum).  
Figure 2. FFT Plot for the Circuit Configuration in Figure 1  
Table 1. Complementary ADCs to the ADA4805-2-EP  
Throughput Resolution SNR  
Product ADC Power (mW) (MSPS)  
(Bits)  
(dB)  
AD7982  
AD7984  
AD7980  
AD7685  
7.0  
10.5  
4.0  
10  
1
1.33  
1
18  
18  
16  
16  
98  
98.5  
91  
0.25  
88  
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  
©2016 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 
 
 
 
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ADA4805-2TRMZ-EPR7 替代型号

型号 品牌 替代类型 描述 数据表
ADA4805-2TRMZ-EP ADI

完全替代

 Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail

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