参数资料
型号: EVAL-AD7687SDZ
厂商: Analog Devices Inc
文件页数: 10/28页
文件大小: 0K
描述: BOARD EVAL FOR AD7687
标准包装: 1
系列: PulSAR®
ADC 的数量: 1
位数: 16
采样率(每秒): 250k
数据接口: 串行
输入范围: ±VREF
在以下条件下的电源(标准): 4mW @ 5V,100kSPS
工作温度: -40°C ~ 85°C
已用 IC / 零件: AD7687
已供物品:
AD7687
Data Sheet
Rev. B | Page 18 of 28
CS MODE 3-WIRE, NO BUSY INDICATOR
This mode is usually used when a single AD7687 is connected
to an SPI-compatible digital host. The connection diagram is
shown in Figure 35 and the corresponding timing is given in
With SDI tied to VIO, a rising edge on CNV initiates a
conversion, selects the CS mode, and forces SDO to high
impedance. Once a conversion is initiated, it continues to
completion irrespective of the state of CNV. For instance, it
could be useful to bring CNV low to select other SPI devices,
such as analog multiplexers, but CNV must be returned high
before the minimum conversion time and held high until the
maximum conversion time to avoid the generation of the BUSY
signal indicator. When the conversion is complete, the AD7687
enters the acquisition phase and powers down. When CNV
goes low, the MSB is output onto SDO. The remaining data bits
are then clocked by subsequent SCK falling edges. The data is
valid on both SCK edges. Although the rising edge can be used
to capture the data, a digital host using the SCK falling edge
allows a faster reading rate provided it has an acceptable hold
time. After the 16th SCK falling edge or when CNV goes high,
whichever is earlier, SDO returns to high impedance.
CNV
SCK
SDO
SDI
DATA IN
CLK
CONVERT
VIO
DIGITAL HOST
AD7687
02972-
034
Figure 35. CS Mode 3-Wire, No BUSY Indicator
Connection Diagram (SDI High)
SDO
D15
D14
D13
D1
D0
tDIS
SCK
1
2
3
14
15
16
tSCK
tSCKL
tSCKH
tHSDO
tDSDO
CNV
CONVERSION
ACQUISITION
tCONV
tCYC
ACQUISITION
SDI = 1
tCNVH
tACQ
tEN
02972-
035
Figure 36. CS Mode 3-Wire, No BUSY Indicator Serial Interface Timing (SDI High)
相关PDF资料
PDF描述
RCM08DRAI CONN EDGECARD 16POS R/A .156 SLD
MIC2076A-1YM IC SW DISTRIBUTION 2CH 8SOIC
0210490301 CABLE JUMPER 1.25MM .051M 24POS
LGU2G560MELY CAP ALUM 56UF 400V 20% SNAP
ADR420ARZ-REEL7 IC VREF SERIES PREC 2.048V 8SOIC
相关代理商/技术参数
参数描述
EVAL-AD7688CB 制造商:Analog Devices 功能描述:EVAL BD FOR USE W/ EITHER THE ANLG DEVICES - Bulk
EVAL-AD7688CBZ 功能描述:BOARD EVAL FOR AD7688 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:PulSAR® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件
EVAL-AD7688SDZ 功能描述:BOARD EVAL FOR AD7688 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:PulSAR® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件
EVAL-AD7689CBZ 制造商:Analog Devices 功能描述:EVAL BOARD 8 CH 250KSPS 16BIT ADC IC - Bulk
EVAL-AD7689EDZ 功能描述:BOARD EVAL AD7689 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:PulSAR® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件