EEWORLDEEWORLDEEWORLD

Part Number

Search

AD7861APZ

Description
IC ADC 11BIT 4CHAN 44PLCC
Categorysemiconductor    Analog mixed-signal IC   
File Size94KB,6 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Download user manual Parametric View All

AD7861APZ Online Shopping

Suppliers Part Number Price MOQ In stock  
AD7861APZ - - View Buy Now

AD7861APZ Overview

IC ADC 11BIT 4CHAN 44PLCC

AD7861APZ Parametric

Parameter NameAttribute value
Number of digits11
Sample rate (per second)28.6k
Number of inputs7
input typesingle ended
Data interfacein parallel
ConfigurationS/H-ADC(3),MUX-S/H-ADC(4)
Radio - S/H:ADC1:1
Number of A/D converters1
ArchitectureSAR
Reference typeinternal
Voltage - Power, Analog5V
Voltage - Power, Digital5V
characteristicSynchronous sampling
Operating temperature-40°C ~ 85°C
Package/casing44-LCC (J-lead)
Supplier device packaging44-PLCC(16.59x16.59)
a
11-Bit Resolution
Simultaneous Sampling A/D Converter
AD7861
FUNCTIONAL BLOCK DIAGRAM
REF IN
REF OUT
2.5V
REFERENCE
BUSY
A0
A1
12
OUTPUT
REGISTERS
D0
D11
RD
CS
CLKIN
SGND
AGND
DGND
V
DD
FEATURES
11-Bit Resolution Analog-to-Digital Converter
Seven Single-Ended Analog Inputs
Four Input Channels Simultaneously Sampled
Expansion with 4 Multiplexed Inputs
Internal 2.5 V Reference
3.2 s Conversion Time per Channel
User Definable Channel Sequencing
Single Supply +5 V Operation
Double Buffered Register Outputs
6.25 MHz to 12.5 MHz Operating Clock Range
APPLICATIONS
Motor Control
3-Phase Power Measurement
Cellular Phones
Data Acquisition
GENERAL DESCRIPTION
VIN1
VIN2
VIN3
SHA
11-BIT
ADC
AUX0
AUX1
AUX2
AUX3
S0
S1
4-1
MUX
AD7861
CONVST
RESET
M0
M1
The AD7861 is a multichannel simultaneous sampling A/D
Converter (ADC) configured for the acquisition of voltage
inputs in a motor control solution or three-phase power system.
The AD7861 combined with Analog Devices’ 16-bit fixed-
point digital signal processor (DSP) provides a low cost 16-bit
fixed-point microcontroller solution.
The input stage has been designed to accommodate the types of
signals frequently found in motor drives. The VIN1, VIN2, and
VIN3 channels are simultaneously sampled inputs suitable for
stator current acquisition. The AUX0–AUX3 channels are
multiplexed and are suitable for slower moving inputs such as
temperature and bus voltage of the diode rectifier output in a
motor control application.
PRODUCT HIGHLIGHTS
Simultaneous Sampling of Four Inputs
Four channel sample and hold amplifier (SHA) allows out of
phase input signals to be sampled simultaneously, preserving
the relative phase information. Sample-and-hold acquisition
time is 1.6
µs
and conversion time per channel is 3.2
µs
(using
a 12.5 MHz system clock).
Flexible Analog Channel Sequencing
AD7861 supports acquisition of 2, 3 or 4 channels per group.
Converted channel results are stored in registers and the data
can be read in any order. The sampling and conversion time
for two channels is 8
µs,
three channels is 11.2
µs,
and four
channels is 14.4
µs
(using a 12.5 MHz system clock).
Single 5 V dc Operation
Low power, digital process.
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
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
Nokia fires QT team
Nokia's layoffs have finally affected QT, which is not completely unexpected. After the "strategic shift" of its development platform, it was only a matter of time. Among the 10,000 employees Nokia pl...
wstt Embedded System
Need OSD character chip design, provide the cost. If interested, QQ
Which expert can help me solve the following problem: My current product uses the lc74761 OSD display chip, and the main program has perfect functions. I now want to replace this chip with upd6464. Th...
rolim Embedded System
TI graphics driver GrImageDraw function usage
I use the function GrImageDraw(&MyContext, g_pucImage, 0, 0) to draw an image, but why is it not displayed? Is there something else I need to add? All other drawing functions are available. Please giv...
xupz123 Microcontroller MCU
Can COSMIC's STM8S compiler generate target library files?
I want to compile the source file and generate the target library file using COSMIC STM8S C, but after working on it for a long time, I can't find any setting to generate the library. Could you please...
baobaoblueyi stm32/stm8
2440 Learning (10) wait and waitpid functions
[i=s]This post was last edited by lonerzf on 2014-7-29 16:11[/i] Main references blog.csdn.net/fengwei321123/article/details/9301409 blog.csdn.net/newnewman80/article/details/8150052 In the previous s...
lonerzf Linux and Android
Stack trace during UCOS system startup - from startup analysis to task switching
I rarely post on BBS, because I am still a novice and cannot help others solve their doubts. At the same time, I post this post, which contains some of my analysis processes and a question I encounter...
liu568chen Real-time operating system RTOS

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1830  2140  2783  1837  2254  37  44  57  46  43 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号