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ADA4938-1

更新时间: 2024-02-05 09:07:32
品牌 Logo 应用领域
亚德诺 - ADI 驱动器
页数 文件大小 规格书
9页 288K
描述
Ultra-Low Distortion Differential ADC Driver

ADA4938-1 技术参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.84
放大器类型:OPERATIONAL AMPLIFIERJESD-30 代码:S-PQCC-N16
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:QCCN
封装等效代码:LCC16,.12SQ,20封装形状:SQUARE
封装形式:CHIP CARRIER电源:5/+-5 V
认证状态:Not Qualified子类别:Operational Amplifiers
表面贴装:YES温度等级:INDUSTRIAL
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD

ADA4938-1 数据手册

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Ultra-Low Distortion  
Differential ADC Driver  
Preliminary Technical Data  
ADA4938-1  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Extremely low harmonic distortion  
−108 dBc HD2 @ 10 MHz  
−79 dBc HD2 @ 70 MHz  
−125 dBc HD3 @ 10 MHz  
−87 dBc HD3 @ 70 MHz  
Low input voltage noise: 2.2 nV/√Hz  
High speed  
−3 dB bandwidth of 1.5 GHz, G = 1  
Slew rate: 4700 V/μs  
0.1 dB gain flatness to 125 MHz  
Fast settling to 0.01% in 8.5 ns  
Fast overdrive recovery of 4 ns  
1 mV typical offset voltage  
Externally adjustable gain  
Differential to differential or single-ended to differential  
operation  
Adjustable output common-mode voltage  
Wide Supply Voltage Range: +5 V & 5 V  
Pb-free 3 mm x 3 mm LFCSP package  
Figure 1.  
APPLICATIONS  
ADC drivers  
Single-ended-to-differential converters  
IF and baseband gain blocks  
Differential buffers  
Line drivers  
GENERAL DESCRIPTION  
The ADA4938-1 is a low noise, ultra-low distortion, high speed  
differential amplifier. It is an ideal choice for driving high  
performance ADCs with resolutions up to 16 bits from dc to 70  
MHz. The output common mode voltage is adjustable over a  
wide range, allowing the ADA4938-1 to match the input of the  
ADC. The internal common mode feedback loop also provides  
exceptional output balance as well as suppression of even-order  
harmonic distortion products.  
The ADA4938-1 is fabricated using ADIs proprietary third  
generation high-voltage XFCB process, enabling it to achieve  
very low levels of distortion with input voltage noise of only 2.2  
nV/√Hz. The low dc offset and excellent dynamic performance  
of the ADA4938-1 make it well suited for a wide variety of data  
acquisition and signal processing and applications.  
The ADA4938-1 is available in a Pb-free, 3 mm x 3mm lead  
frame chip scale package (LFCSP). It is specified to operate  
over the extended industrial temperature range of −40°C to  
+85°C.  
Full differential and single-ended to differential gain  
configurations are easily realized with the ADA4938-1. A  
simple external feedback network of four resistors determines  
the amplifiers closed-loop gain.  
Rev. PrA  
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  
©2006 Analog Devices, Inc. All rights reserved.  
 

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