- 您现在的位置：买卖IC网 > PDF目录10681 > AD7298BCPZ (Analog Devices Inc)IC ADC 12BIT SPI/SRL 1M 20LFCSP PDF资料下载
参数资料
| 型号： | AD7298BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/25页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SPI/SRL 1M 20LFCSP |
| 特色产品： | AD7298 ADC with Temperature Sensor |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 1M |
| 数据接口： | DSP，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 22.7mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 20-LFCSP-WQ（4x4） |
| 包装： | 托盘 |
| 输入数目和类型： | 8 个单端，单极 |
AD7298
Rev. B | Page 17 of 24
MODES OF OPERATION
The AD7298 offers different modes of operation that are
designed to provide additional flexibility for the user. These
options can be chosen by programming the content of the
control register to select the desired mode.
TRADITIONAL MULTICHANNEL MODE OF
OPERATION
The AD7298 can operate as a traditional multichannel
ADC, where each serial transfer selects the next channel for
conversion. One must write to the control register to configure
and select the desired input channel prior to initiating any
conversions. In the traditional mode of operation, the CS signal
is used to frame the first write to the converter on the DIN pin.
In this mode of operation, the REPEAT bit in the control
register is set to a low logic level, 0, thus the REPEAT function
is not in use. The data, which appears on the DOUT pin during
the initial write to the control register, is invalid. The first CS
falling edge initiates a write to the control register to configure
the device; a conversion is then initiated for the selected analog
input channel (VIN0) on the subsequent (2nd) CS falling edge; the
third CS falling edge will have the result (VIN2) available for
reading. The AD7298 operates with one cycle latency, thus the
conversion result corresponding to each conversion is available
one serial read cycle after the cycle in which the conversion was
initiated.
As the device operates with one cycle latency, the control
register configuration sets up the configuration for the next
conversion, which is initiated on the next CS falling edge, but
the first bit of the corresponding result is not clocked out until
the subsequent falling CS edge, as shown in
If more than one channel is selected in the control register, the
AD7298 converts all selected channels sequentially in ascending
order on successive CS falling edges. Once all the selected
channels in the control register are converted, the AD7298
ceases converting until the user rewrites to the control register
to select the next channel for conversion. This operation is
shown in
. DOUT returns all 1s if the sequence of
conversions is completed or if no channel is selected.
CS
SCLK
DOUT
DIN
1
12
16
1
16
1
16
1
16
CONVERSION RESULT
FOR CHANNEL 4
CONVERSION RESULT
FOR CHANNEL 1
INVALID DATA
DATA WRITTEN TO CONTROL
REGISTER CHANNEL 4 SELECTED
DATA WRITTEN TO CONTROL
REGISTER CHANNEL 1 SELECTED
NO WRITE TO THE
CONTROL REGISTER
08
75
4-
00
9
NO WRITE TO THE
CONTROL REGISTER
Figure 25. Configuring a Conversion and Read with the AD7298. One channel selected for conversion.
CS
SCLK
DOUT
DIN
112
16
1
16
1
16
CONVERSION RESULT
FOR CHANNEL 1
CONVERSION RESULT
FOR CHANNEL 5
CONVERSION RESULT
FOR CHANNEL 2
INVALID DATA
NO WRITE TO THE
CONTROL REGISTER
NO WRITE TO THE
CONTROL REGISTER
NO WRITE TO THE
CONTROL REGISTER
DATA WRITTEN TO CONTROL
REGISTER CH 1 AND 2 SELECTED
CS
SCLK
DOUT
DIN
116
1
16
DATA WRITTEN TO CONTROL
REGISTER CHANNEL 5 SELECTED
08
75
4-
01
0
Figure 26. Configuring a Conversion and Read with the AD7298. Numerous channels selected for conversion.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-24W-MY-B1 | CONVERTER MOD DC/DC 5.5V 50W |
| VE-JWD-MY-F3 | CONVERTER MOD DC/DC 85V 50W |
| VI-23Z-MY-B1 | CONVERTER MOD DC/DC 2V 20W |
| AD7887WARMZ | IC ADC 12BIT 2CH SRL 8-MSOP |
| VI-23Y-MX-B1 | CONVERTER MOD DC/DC 3.3V 49.5W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7298BCPZ-RL7 | 功能描述:IC ADC 10BIT SPI/SRL 8CH 20LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD73 | 制造商:Distributed By MCM 功能描述:REFRIGERATR DOOR GASKET DIRECT |
| AD7302 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.7 V to 5.5 V, Parallel Input Dual Voltage Output 8-Bit DAC |
| AD7302BN | 功能描述:IC DAC 8BIT DUAL R-R 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| AD7302BNZ | 功能描述:IC DAC 8BIT DUAL R-R 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行 转换器数目:2 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-uMAX 包装:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
发布紧急采购，3分钟左右您将得到回复。