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参数资料
| 型号： | AD7739BRU-REEL |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | ADC |
| 英文描述： | 8-Channel, High Throughput, 24-Bit Sigma-Delta ADC |
| 中文描述： | 8-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24 |
| 封装： | MS-153AD, TSSOP-24 |
| 文件页数： | 22/32页 |
| 文件大小： | 380K |
| 代理商： | AD7739BRU-REEL |
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AD7739
DIGITAL INTERFACE DESCRIPTION
HARDWARE
The AD7739 serial interface can be connected to the host device
via the serial interface in several different ways.
Rev. 0 | Page 22 of 32
The CS pin can be used to select the AD7739 as one of several
circuits connected to the host serial interface. When CS is high,
the AD7739 ignores the SCLK and DIN signals and the DOUT
pin goes to the high impedance state. When the CS signal is not
used, connect the CS pin to DGND.
The RDY pin can be polled for high-to-low transition or can
drive the host device interrupt input to indicate that the
AD7739 has finished the selected operation and/or new data
from the AD7739 is available. The host system can also wait a
designated time after a given command is written to the device
before reading. Alternatively, the AD7739 status can be polled.
When the RDY pin is not used in the system, it should be left as
an open circuit. (Note that the RDY pin is always an active
digital output, i.e., it never goes into a high impedance state.)
The RESET pin can be used to reset the AD7739. When not
used, connect this pin to DV
DD
.
The AD7739 interface can be reduced to just two wires
connecting the DIN and DOUT pins to a single bidirectional
data line. The second signal in this 2-wire configuration is the
SCLK signal. The host system should change the data line
direction with reference to the AD7739 timing specification
(see the Bus Relinquish Time in Table 2). The AD7739 cannot
operate in the continuous read mode in 2-wire serial interface
configuration.
All the digital interface inputs are Schmitt triggered; therefore,
the AD7739 interface features higher noise immunity and can
be easily isolated from the host system via optocouplers.
Figure 13, Figure 14, and Figure 15 outline some of the possible
host device interfaces: SPI without using the CS signal
(Figure 13), a DSP interface (Figure 14), and a 2-wire
configuration (Figure 15).
SCLK
DIN
DOUT
CS
RDY
RESET
DGND
DV
DD
DV
DD
AD7739
SCK
MOSI
MISO
INT
68HC11
SS
03742-0-013
Figure 13. AD7739 to Host Device Interface, SPI
SCLK
DIN
DOUT
CS
RDY
RESET
DV
DD
AD7739
SCLK
DT
DR
INT
TFS
RFS
ADSP-2105
03742-0-001
Figure 14. AD7739 to Host Device Interface, DSP
SCLK
DIN
DOUT
CS
RESET
DGND
DV
DD
AD7739
P3.1/TxD
P3.0/RxD
8xC51
03742-0-015
Figure 15. AD7739 to Host Device Interface, 2-Wire Configuration
DIN
SCLK
CS
DOUT
WRITE
COMMUNICATIONS
REGISTER
READ
ADC STATUS
REGISTER
03742-0-016
Figure 16. Serial Interface Signals—Registers Access
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相关代理商/技术参数 |
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|---|---|
| AD7739BRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 3.05Msps 24-bit Serial 24-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.133KSPS 24BIT SERL 24TSSOP - Tape and Reel |
| AD7739BRUZ | 功能描述:IC ADC 24BIT 8-CH 24-TSSOP 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 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7739BRUZ | 制造商:Analog Devices 功能描述:IC, ADC, 24BIT, 15.1KSPS, TSSOP-24 |
| AD7739BRUZ-REEL7 | 功能描述:IC ADC 24BIT 8CH SIG-DEL 24TSSOP 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD773A | 制造商:AD 制造商全称:Analog Devices 功能描述:10-Bit, 20 MSPS Monolithic A/D Converter |
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