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AD7858LBRZ PDF预览

AD7858LBRZ

更新时间： 2024-10-01 13:05:23
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
32页 313K
描述
3 V to 5 V Single Supply, 200 kSPS, 8-Channel, 12-Bit, Serial Sampling ADC

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AD7858LBRZ 数据手册

 浏览型号AD7858LBRZ的Datasheet PDF文件第2页浏览型号AD7858LBRZ的Datasheet PDF文件第3页浏览型号AD7858LBRZ的Datasheet PDF文件第4页浏览型号AD7858LBRZ的Datasheet PDF文件第5页浏览型号AD7858LBRZ的Datasheet PDF文件第6页浏览型号AD7858LBRZ的Datasheet PDF文件第7页 
3 V to 5 V Single Supply, 200 kSPS  
8-Channel, 12-Bit Sampling ADC  
a
AD7858/AD7858L*  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
Specified for VDD of 3 V to 5.5 V  
AD7858—200 kSPS; AD7858L—100 kSPS  
System and Self-Calibration with Autocalibration on  
Power-Up  
Eight Single-Ended or Four Pseudo-Differential Inputs  
Low Power  
AV  
DD  
AGND  
AIN1  
AIN8  
AD7858/  
AD7858L  
I/P  
MUX  
T/H  
DV  
DD  
AD7858: 12 mW (VDD = 3 V)  
AD7858L: 4.5 mW (VDD = 3 V)  
2.5V  
REFERENCE  
COMP  
Automatic Power-Down After Conversion (25 ␮W)  
Flexible Serial Interface:  
DGND  
REF /REF  
IN  
BUF  
OUT  
8051/SPI™/QSPI™/␮P Compatible  
24-Lead DIP, SOIC, and SSOP Packages  
C
REF1  
CHARGE  
REDISTRIBUTION  
DAC  
APPLICATIONS  
Battery-Powered Systems (Personal Digital Assistants,  
Medical Instruments, Mobile Communications)  
Pen Computers  
Instrumentation and Control Systems  
High-Speed Modems  
CLKIN  
C
REF2  
CONVST  
SAR AND ADC  
CONTROL  
CALIBRATION  
MEMORY AND  
CONTROLLER  
BUSY  
CAL  
SLEEP  
GENERAL DESCRIPTION  
SERIAL INTERFACE/CONTROL REGISTER  
The AD7858/AD7858L are high-speed, low-power, 12-bit  
ADCs that operate from a single 3 V or 5 V power supply, the  
AD7858 being optimized for speed and the AD7858L for low  
power. The ADC powers up with a set of default conditions at  
which time it can be operated as a read-only ADC. The ADC  
contains self-calibration and system calibration options to en-  
sure accurate operation over time and temperature and have a  
number of power-down options for low-power applications.  
The part powers up with a set of default conditions and can  
operate as a read-only ADC.  
DIN  
DOUT  
SCLK  
SYNC  
PRODUCT HIGHLIGHTS  
1. Specified for 3 V and 5 V supplies.  
2. Automatic calibration on power-up.  
3. Flexible power management options including automatic  
power-down after conversion.  
The AD7858 is capable of 200 kHz throughput rate while the  
AD7858L is capable of 100 kHz throughput rate. The input  
track-and-hold acquires a signal in 500 ns and features a  
pseudo-differential sampling scheme. The AD7858/AD7858L  
voltage range is 0 to VREF with straight binary output coding.  
Input signal range is to the supply and the part is capable of con-  
verting full power signals to 100 kHz.  
4. Operates with reference voltages from 1.2 V to VDD  
5. Analog input range from 0 V to VDD  
.
.
6. Eight single-ended or four pseudo-differential input channels.  
7. System and self-calibration.  
8. Versatile serial I/O port (SPI/QSPI/8051/µP).  
9. Lower power version AD7858L.  
CMOS construction ensures low power dissipation of typically  
4.5 mW for normal operation and 1.15 mW in power-down  
mode with a throughput rate of 10 kSPS (VDD = 3 V). The part  
is available in 24-lead, 0.3 inch-wide dual-in-line package  
(DIP), 24-lead small outline (SOIC), and 24-lead small shrink  
outline (SSOP) packages.  
*Patent pending.  
See page 31 for data sheet index.  
SPI and QSPI are trademarks of Motorola, Inc.  
REV. B  
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  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 2000  
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AD7858LBRZ 替代型号

型号 品牌 替代类型 描述 数据表
AD7858LARZ ADI

类似代替

 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858ARZ ADI

类似代替

 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858AR ADI

类似代替

 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC

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