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AD7887WARMZ-RL

更新时间： 2024-11-16 18:47:39
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
页数 文件大小 规格书
25页 469K
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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AD7887WARMZ-RL 数据手册

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2.7 V to 5.25 V, Micropower, 2-Channel,  
125 kSPS, 12-Bit ADC in 8-Lead MSOP  
Data Sheet  
AD7887  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Specified for VDD of 2.7 V to 5.25 V  
Flexible power/throughput rate management  
Shutdown mode: 1 μA max  
AD7887  
AIN0  
I/P  
MUX  
T/H  
AIN1/  
One or two single-ended inputs  
V
REF  
2.5V  
REF  
COMP  
Serial interface: SPI®/QSPI™/MICROWIRE™/DSP compatible  
8-lead narrow SOIC and MSOP packages  
Qualified for automotive applications  
AIN1/V  
SOFTWARE  
CONTROL  
LATCH  
REF  
V
BUF  
DD  
APPLICATIONS  
GND  
CHARGE  
Battery-powered systems (personal digital assistants,  
medical instruments, mobile communications)  
Instrumentation and control systems  
High speed modems  
REDISTRIBUTION  
DAC  
SAR + ADC  
CONTROL LOGIC  
SPORT  
DIN  
SCLK  
CS  
DOUT  
Figure 1.  
GENERAL DESCRIPTION  
The AD7887 is a high speed, low power, 12-bit analog-to-digital  
converter (ADC) that operates from a single 2.7 V to 5.25 V  
power supply. The AD7887 is capable of 125 kSPS throughput  
rate. The input track-and-hold acquires a signal in 500 ns and  
features a single-ended sampling scheme. The output coding for  
the AD7887 is straight binary, and the part is capable of  
converting full power signals of up to 2.5 MHz.  
the reference voltage for the part is provided via the VDD pin. As  
a result, the input voltage range on both the AIN0 and AIN1  
inputs is 0 to VDD  
.
CMOS construction ensures low power dissipation of typically  
2 mW for normal operation and 3 μW in power-down mode.  
The part is available in an 8-lead, 0.15-inch-wide narrow body  
SOIC and an 8-lead MSOP package.  
The AD7887 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. In single-channel operation, there is one  
analog input (AIN0) and the AIN1/VREF pin assumes its VREF  
function. This VREF pin allows the user access to the part’s  
internal 2.5 V reference, or the VREF pin can be overdriven by an  
external reference to provide the reference voltage for the part.  
This external reference voltage has a range of 2.5 V to VDD. The  
PRODUCT HIGHLIGHTS  
1. Smallest 12-bit dual-/single-channel ADC; 8-lead MSOP  
package.  
2. Lowest power 12-bit dual-/single-channel ADC.  
3. Flexible power management options, including automatic  
power-down after conversion.  
4. Read-only ADC capability.  
analog input range on AIN0 is 0 to VREF  
.
5. Analog input range from 0 V to VREF  
.
In dual-channel operation, the AIN1/VREF pin assumes its AIN1  
function, providing a second analog input channel. In this case,  
6. Versatile serial input/output port (SPI/QSPI/MICROWIRE/  
DSP compatible).  
Rev. E  
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 arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©1999–2014 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
 
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AD7887WARMZ-RL 替代型号

型号 品牌 替代类型 描述 数据表
AD7887WARMZ ADI

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

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