參數資料
| 型號： | AD7861AP |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/6頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 11BIT 4CH 44-PLCC |
| 標準包裝： | 27 |
| 位數： | 11 |
| 采樣率（每秒）： | 28.6k |
| 數據接口： | 并聯 |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 50mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 供應商設備封裝： | 44-PLCC（16.59x16.59） |
| 包裝： | 管件 |
| 輸入數目和類型： | 7 個單端，單極 |
a
AD7861
FUNCTIONAL BLOCK DIAGRAM
REF IN
BUSY
REF OUT
VIN1
VIN2
VIN3
A0
A1
D0
D11
RD
CS
CLKIN
SHA
2.5V
REFERENCE
AUX0
AUX1
AUX2
AUX3
S0
S1
CONVST
RESET
M0
M1
12
11-BIT
ADC
4-1
MUX
OUTPUT
REGISTERS
SGND
AGND
DGND
VDD
AD7861
11-Bit Resolution
Simultaneous Sampling A/D Converter
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.
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
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
s and conversion time per channel is 3.2 s (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
s, three channels is 11.2 s, and four
channels is 14.4
s (using a 12.5 MHz system clock).
Single 5 V dc Operation
Low power, digital process.
REV. B
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
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| AD7861APZ | 功能描述:IC ADC 11BIT 4CHAN 44PLCC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7862 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862AN-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28-DIP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD7862AN-3 | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin PDIP W 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT PARALLEL ADC I.C. - Bulk |
| AD7862ANZ-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率（每秒）:20M 數據接口:并聯 轉換器數目:2 功率耗散（最大）:155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數目和類型:4 個單端，單極；2 個差分，單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
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