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| 型號(hào)： | AD7718 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 8-/10-Channel, Low Voltage, Low Power, ADCs |
| 中文描述： | 8-/10-Channel，低電壓，低功耗，ADC的 |
| 文件頁(yè)數(shù)： | 1/44頁(yè) |
| 文件大小： | 339K |
| 代理商： | AD7718 |
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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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD7708/AD7718
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2001
8-/10-Channel, Low Voltage,
Low Power, - ADCs
FUNCTIONAL BLOCK DIAGRAM
DVDD
XTAL1 XTAL2
MUX
POS BUF
- ADC
*
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
PGA
OSC
AND
PLL
SERIAL
INTERFACE
AND
CONTROL
LOGIC
DOUT
DIN
SCLK
CS
RDY
RESET
AVDD
I/O PORT
AVDD
AD7708/AD7718
DGND
P2
P1
REFIN2(+)/AIN9
REFIN1(+) REFIN2(–)/AIN10
REFIN1(–)
AINCOM
AGND
*AD7708 16-BIT ADC
*AD7718 24-BIT ADC
REFIN(+)
REFIN(–)
NEG BUF
FEATURES
8-/10-Channel, High Resolution - ADCs
AD7708 Has 16-Bit Resolution
AD7718 Has 24-Bit Resolution
Factory-Calibrated
Single Conversion Cycle Setting
Programmable Gain Front End
Simultaneous 50 Hz and 60 Hz Rejection
VREF Select Allows Absolute and Ratiometric
Measurement Capability
Operation Can Be Optimized for
Analog Performance (
CHOP
= 0) or
Channel Throughput (
CHOP
= 1)
INTERFACE
3-Wire Serial
SPI
TM
, QSPI
TM
, MICROWIRE
TM
, and DSP-Compatible
Schmitt Trigger on SCLK
POWER
Specified for Single 3 V and 5 V Operation
Normal: 1.28 mA Typ @ 3 V
Power-Down: 30 A (32 kHz Crystal Running)
On-Chip Functions
Rail-to-Rail Input Buffer and PGA
2-Bit Digital I/O Port
APPLICATIONS
Industrial Process Control
Instrumentation
Pressure Transducers
Portable Instrumentation
Smart Transmitters
SPI and QSPI are trademarks of Motorola Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
VREF Select
is a trademark of Analog Devices, Inc.
GENERAL DESCRIPTION
The AD7708/AD7718 are complete analog front-ends for low
frequency measurement applications. The AD7718 contains a
24-bit
Σ
-
ADC with PGA and can be configured as 4/5 fully-
differential input channels or 8/10 pseudo-differential input
channels. Two pins on the device are configurable as analog
inputs or reference inputs. The AD7708 is a 16-bit version of
the AD7718. Input signal ranges from 20 mV to 2.56 V can be
directly converted using these ADCs. Signals can be converted
directly from a transducer without the need for signal conditioning.
The device operates from a 32 kHz crystal with an on-board PLL
generating the required internal operating frequency. The output
data rate from the part is software programmable. The peak-to-
peak resolution from the part varies with the programmed gain
and output data rate.
The part operates from a single 3 V or 5 V supply. When operating
from 3 V supplies, the power dissipation for the part is 3.84 mW typ.
Both parts are pin-for-pin compatible allowing an upgradable
path from 16 to 24 bits without the need for hardware modifica-
tions. The AD7708/AD7718 are housed in 28-lead SOIC and
TSSOP packages.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7718BR | 8-/10-Channel, Low Voltage, Low Power, ADCs |
| AD7718BRU | 8-/10-Channel, Low Voltage, Low Power, ADCs |
| AD7709BR | 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port |
| AD7709BRU | LGE Kit Series; Functions: Continuous light; Rated Voltage: 120V AC; Style: Power Unit; Diameter: 100; Applicable Model: LGE |
| AD7709 | 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7718BR | 功能描述:IC ADC 24BIT R-R 8/10CH 28-SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:- |
| AD7718BR-REEL | 功能描述:IC ADC 24BIT R-R 8/10CH 28-SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極 |
| AD7718BR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1.365ksps 24-bit Serial 28-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1.365KSPS 24BIT SERL 28SOIC W - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:4/5 CHNL DIFF OR 8/10 CHNL 24-BIT ADC - Tape and Reel |
| AD7718BRU | 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)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(lèi)型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7718BRU-REEL | 功能描述:IC ADC 24BIT R-R 8/10CH 28-TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極 |
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