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ADA4805-2ARMZ-R7

更新时间： 2024-02-27 00:13:51
品牌 Logo 应用领域
亚德诺 - ADI 放大器光电二极管
页数 文件大小 规格书
25页 830K
描述
Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier

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ADA4805-2ARMZ-R7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：TSSOP,针数：8
Reach Compliance Code：compliant风险等级：1.71
放大器类型：OPERATIONAL AMPLIFIER最大平均偏置电流 (IIB)：0.8 µA
标称共模抑制比：130 dB最大输入失调电压：125 µV
JESD-30 代码：S-PDSO-G8JESD-609代码：e3
长度：3 mm湿度敏感等级：1
负供电电压上限：-5.5 V标称负供电电压 (Vsup)：-5 V
功能数量：2端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260座面最大高度：1.1 mm
标称压摆率：250 V/us子类别：Operational Amplifier
供电电压上限：5.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BIPOLAR
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

ADA4805-2ARMZ-R7 数据手册

 浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第2页浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第3页浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第4页浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第5页浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第6页浏览型号ADA4805-2ARMZ-R7的Datasheet PDF文件第7页 
0.2 µV/°C Offset Drift, 105 MHz Low Power,  
Low Noise, Rail-to-Rail Amplifiers  
ADA4805-1/ADA4805-2  
Data Sheet  
FEATURES  
TYPICAL APPLICATIONS CIRCUIT  
+7.5V  
Low input offset voltage: 125 µV (maximum)  
Low input offset voltage drift  
5V REF  
ADA4805-1/  
ADA4805-2  
ADR435  
VDD  
0.2 µV/°C (typical)  
1.5 µV/°C (maximum)  
C4  
100nF  
C2  
10µF  
C3  
0.1µF  
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  
ADA4805-1/  
0V TO  
REF  
ADA4805-2  
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)  
Dynamic power scaling  
Turn-on time: 3 µs (maximum) fully settled  
Small packaging  
6-lead SC70, 6-lead SOT-23, and 8-lead MSOP  
Figure 1. Driving the AD7980 with the ADA4805-1/ADA4805-2  
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 ADA4805-1/ADA4805-2  
operate 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 them ideal  
for high speed, low power instruments.  
The ADA4805-1 is available in a 6-lead SOT-23 and a 6-lead  
SC70 package. The ADA4805-2 is available in an 8-lead MSOP  
and a 10-lead LFCSP package. These amplifiers are rated to  
work over the industrial temperature range of −40°C to +125°C.  
APPLICATIONS  
High resolution, high precision analog-to-digital converter  
(ADC) drivers  
Battery-powered instrumentation  
Micropower active filters  
Portable point of sales terminals  
Active RFID readers  
0
INPUT FREQUENCY = 10kHz  
SNR = 89.4dB  
–20  
THD = 104dB  
SINAD = 89.3dB  
–40  
Photo multipliers  
ADC reference buffers  
–60  
–80  
GENERAL DESCRIPTION  
–100  
–120  
–140  
–160  
–180  
The ADA4805-1/ADA4805-2 are high speed voltage feedback,  
rail-to-rail output amplifiers with an exceptionally low  
quiescent current of 500 µA, making them ideal for low power,  
high resolution data conversion systems. Despite being low  
power, these amplifiers provide excellent overall performance.  
They offer 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).  
0
10  
20  
30  
40  
50  
60  
70  
80  
FREQUENCY (kHz)  
Figure 2. FFT Plot for the Circuit Configuration in Figure 1  
Table 1. Complementary ADCs to the ADA4805-1/ADA4805-2  
A shutdown pin allows further reduction of the quiescent  
supply current to 2.9 µA. For power sensitive applications, the  
shutdown mode offers a very fast turn-on time of 3 µs. This  
allows the user to dynamically manage the power of the  
amplifier by turning the amplifier off between ADC samples.  
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. B  
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 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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