參數(shù)資料
型號(hào)： EVAL-AD7656CB
廠商： Analog Devices, Inc.
英文描述： 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
中文描述： 250 kSPS的6通道同步采樣ADC的雙極12/14/16-Bit
文件頁(yè)數(shù)： 1/25頁(yè)
文件大?。?/td> 308K
代理商： EVAL-AD7656CB
250 kSPS, 6-Channel,Simultaneous
Sampling, Bipolar 12/14/16-Bit ADC
AD7658/AD7657/AD7656*
Preliminary Technical Data
FEATURES
6 Independent ADCs
True Bipolar Analog Inputs
Pin/Software Selectable Ranges:- ±10V, ±5V
Fast throughput rate: 250 kSPS
Specified for V
CC
of 4.5 V to 5.5 V
Low power
160mW at 250 kSPS with 5 V supplies
Wide input bandwidth:
85 dB SNR at 50 kHz input frequency
On-chip Reference and Reference Buffers
Parallel and Serial Interface
High speed serial interface
SPI/QSPI/μWire/DSP compatible
Standby mode: 5 μA max
i
CMOS
TM
Process Technology
64 LQFP package
registered trademarks are the property of their respective owners.
Rev.
PrI
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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2004 Analog Devices, Inc. All rights reserved.
www.analog.com
APPLICATIONS
Power Line Monitoring systems
Instrumentation and control systems
Multi-axis positioning systems
FUNCTIONAL BLOCK DIAGRAM
16-BIT SAR
BUF
AGND
DGND
V1
AVCC
SCLK
DOUTB
AD7656
OUTPUT
DRIVERS
CONTROL
LOGIC
T/H
VDRIVE
SER/PAR
VDD
REF
VSS
T/H
T/H
T/H
T/H
T/H
V2
16-BIT SAR
16-BIT SAR
16-BIT SAR
16-BIT SAR
16-BIT SAR
V3
V4
V5
V6
DATA/
CONTROL
LINES
OUTPUT
DRIVERS
DOUTC
OUTPUT
DRIVERS
OUTPUT
DRIVERS
CLK
OSC
CONVSTA
CONVSTB CONVSTC
DVCC
Figure 1.
GENERAL DESCRIPTION
The AD7658/AD7657/AD7656 contain six 12/14/16-bit, fast, low
power, successive approximation ADCs all in the one package.
The AD7658/AD7657/AD7656 core operates from a single 4.5
V to 5.5 V power supply and features throughput rates up to 250
kSPS. The parts contain low noise, wide bandwidth track-and-
hold amplifiers that can handle input frequencies up to 8 MHz.
The conversion process and data acquisition are controlled
using CONVST signals and an internal oscillator. Three
CONVST pins allow independent simultaneous sampling of the
three ADC pairs. The AD7658/AD7657/AD7656 have both a
high speed parallel and serial interface allowing the devices to
interface with microprocessors or DSPs. When in Serial
interface mode these parts have a Daisy Chain feature allowing
multiple ADCs to connect to a single serial interface. The
AD7658/AD7657/AD7656 can accommodate true bipolar input
* Protected by U.S. Patent No. 6,731,232
i
CMOS
TM
Process Technology
For analog systems designers within industrial/instrumentation equipment OEMs who need high performance ICs at higher-voltage levels,
i
CMOS is a technology platform
that enables the development of analog ICs capable of 30V and operating at +/- 15V supplies while allowing dramatic reductions in power consumption and package size, and
increased AC and DC performance.
signals in the ±10V range and ±5V range . They contain a 2.5V
internal reference and can also accept an external reference. If a
3V external reference is applied to the VREF pin, the ADCs can
accommodate a true bipolar ±12V analog input range. V
DD
and
V
SS
supplies of ±12V are required for this ±12V input range.
PRODUCT HIGHLIGHTS
1.
Six 12/14/16-bit 250 kSPS ADCs on board.
2.
Six true bipolar high impedance analog inputs.
3.
The AD7658/AD7657/AD7656 feature both a parallel and
a high speed serial interface.
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參數(shù)描述
EVAL-AD7656CBZ 功能描述:BOARD EVAL FOR AD7656 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:iCMOS® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7657-1EDZ 功能描述:BOARD EVAL CONTROL AD7657-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:iCMOS® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7657CBZ 功能描述:BOARD EVAL FOR AD7657 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:iCMOS® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7658-1EDZ 制造商:AD 制造商全稱:Analog Devices 功能描述:250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 16-/14-/12-Bit ADC
EVAL-AD7658-1SDZ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Evaluation Control Board RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
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