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AD7887ARMZ-REEL

更新时间： 2024-11-16 13:02:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
5页 247K
描述
2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP

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AD7887ARMZ-REEL 数据手册

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Circuit Note  
CN-0150  
Devices Connected/Referenced  
1 MHz to 8 GHz, 70 dB, Logarithmic  
Detector/Controller  
Circuits from the Lab™ reference circuits are engineered and  
tested for quick and easy system integration to help solve today’s  
analog, mixed-signal, and RF design challenges. For more  
information and/or support, visit www.analog.com/CN0150.  
AD8318  
2.7 V to 5.25 V, Micropower, 2-Channel,  
125 kSPS, 12-Bit ADC in 8-Lead MSOP  
AD7887  
ADR421  
Precision, Low Noise, 2.5 V Reference  
Software-Calibrated, 1 MHz to 8 GHz, 60 dB RF Power  
Measurement System Using a Logarithmic Detector  
A simple two-point system calibration is performed in the  
digital domain.  
EVALUATION AND DESIGN SUPPORT  
Circuit Evaluation Boards  
The AD8318 maintains accurate log conformance for signals of  
1 MHz to 6 GHz and provides useful operation to 8 GHz.  
The device provides a typical output voltage temperature  
stability of 0.ꢀ dB.  
CN-0150 Circuit Evaluation Board (EVAL-CN0150A-SDPZ)  
System Demonstration Platform (EVAL-SDP-CB1Z)  
Design and Integration Files  
Schematics, Layout Files, Bill of Materials  
The AD7887 ADC can be configured for either dual or single  
channel operation via the on-chip control register. There is a  
default single-channel mode that allows the AD7887 to be operated  
as a read-only ADC, thereby simplifying the control logic.  
CIRCUIT FUNCTION AND BENEFITS  
This circuit measures RF power at any frequency from  
1 MHz to 8 GHz over a range of approximately 60 dB. The  
measurement result is provided as a digital code at the output of  
a 12-bit ADC with serial interface and integrated reference. The  
output of the RF detector has a glueless interface to the ADC and  
uses most of the ADC’s input range without further adjustment.  
Typical data is shown for the two devices operating over a  
−40°C to +8ꢀ°C temperature range.  
+5V  
V
POS  
R4  
499Ω  
C5  
0.1µF  
10µF  
0.1µF  
C6  
100pF  
12  
11  
10  
9
SERIAL  
INTERFACE  
V
CMIP CMIP TADJ VPSO  
DD  
13 TEMP  
CMOP  
VSET  
VOUT  
CLPF  
8
7
6
5
AD7887  
PULSED RF  
INPUT  
V
OUT  
C1 1nF  
C2 1nF  
AIN0  
14 INHI  
SCLK  
R1  
52.3Ω  
AD8318  
µC/µP  
R
FIN  
SEE  
TEXT  
DOUT  
DIN  
15 INLO  
16 ENBL  
AIN1/  
REF  
V
0.1µF  
CMIP CMIP VPSI VPSI  
CS  
GND  
C9  
0.1µF  
1
2
3
4
C7  
100pF  
C8  
0.1µF  
V
POS  
Figure 1. Software-Calibrated RF Measurement System (Simplified Schematic: All Connections Not Shown)  
Rev. C  
Circuits from the Lab™ circuits from Analog Devices have been designed and built by Analog Devices  
engineers. Standard engineering practices have been employed in the design and construction of  
each circuit, and their function and performance have been tested and verified in a lab environment at  
room temperature. However, you are solely responsible for testing the circuit and determining its  
suitability and applicability for your use and application. Accordingly, in no event shall Analog Devices  
be liable for direct, indirect, special, incidental, consequential or punitive damages due to any cause  
whatsoever connected totheuseof anyCircuits from the Lab circuits. (Continued on last page)  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
www.analog.com  
Fax: 781.461.3113 ©2010–2012 Analog Devices, Inc. All rights reserved.  
 
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AD7887ARMZ-REEL 替代型号

型号 品牌 替代类型 描述 数据表
AD7887ARM-REEL7 ADI

完全替代

 2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARM-REEL ADI

完全替代

 2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARMZ ADI

类似代替

 2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP

与AD7887ARMZ-REEL相关器件

型号 品牌 获取价格 描述 数据表
AD7887ARMZ-REEL2 ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARMZ-REEL7 ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARMZ-REEL7 ROCHESTER

获取价格

 		2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, LEAD FREE, MO-187AA, MSOP-
AD7887ARMZ-REEL72 ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887AR-REEL ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887AR-REEL7 ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887AR-REEL7 ROCHESTER

获取价格

 		2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, 0.150 INCH, MS-012AA, SOIC
AD7887ARZ ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARZ2 ADI

获取价格

 		2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887ARZ-REEL ADI

获取价格

 		2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, 0.150 INCH, ROHS COMPLIANT

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