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参数资料
| 型号： | AD7710AN |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC SIGNAL CONDITIONING 24DIP |
| 标准包装： | 15 |
| 位数： | 24 |
| 采样率（每秒）： | 1.03k |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 45mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极 |
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REV. G
–20–
AD7710
Read Operation
Data can be read from either the output register, the control
register, or the calibration registers. A0 determines whether the
data read accesses data from the control register or from the
output/calibration registers. This A0 signal must remain valid
for the duration of the serial read operation. With A0 high, data is
accessed from either the output register or from the calibration
registers. With A0 low, data is accessed from the control register.
The function of the
DRDY line is dependent only on the output
update rate of the device and the reading of the output data
register.
DRDY goes low when a new data-word is available in
the output data register. It is reset high when the last bit of data
(either 16th bit or 24th bit) is read from the output register. If
data is not read from the output register, the
DRDY line will
remain low. The output register will continue to be updated at
the output update rate, but
DRDY will not indicate this. A read
from the device in this circumstance will access the most recent
word in the output register. If a new data-word becomes avail-
able to the output register while data is being read from the
output register,
DRDY will not indicate this and the new data-
word will be lost to the user.
DRDY is not affected by reading
from the control register or the calibration registers.
Data can be accessed from the output data register only when
DRDY is low. If RFS goes low with DRDY high, no data trans-
fer will take place.
DRDY does not have any effect on reading
data from the control register or from the calibration registers.
Figure 10 shows a timing diagram for reading from the AD7710
in the self-clocking mode. This read operation shows a read
from the AD7710’s output data register. A read from the control
register or calibration registers is similar, but, in these cases, the
DRDY line is not related to the read function. Depending on
the output update rate, it can go low at any stage in the control/
calibration register read cycle without affecting the read and its
status should be ignored. A read operation from either the con-
trol or calibration registers must always read 24 bits of data
from the respective register.
Figure 10 shows a read operation from the AD7710. For the
timing diagram shown, it is assumed that there is a pull-up
resistor on the SCLK output. With
DRDY low, the RFS input
is brought low.
RFS going low enables the serial clock of the
AD7710 and also places the MSB of the word on the serial data
line. All subsequent data bits are clocked out on a high to low
transition of the serial clock and are valid prior to the following
rising edge of this clock. The final active falling edge of SCLK
clocks out the LSB and this LSB is valid prior to the final active
rising edge of SCLK. Coincident with the next falling edge of
SCLK,
DRDY is reset high. DRDY going high turns off the
SCLK and the SDATA outputs. This means that the data hold
time for the LSB is slightly shorter than for all other bits.
SDATA (O)
SCLK (O)
THREE-STATE
RFS (I)
A0 (I)
t 4
t 5
t 7
t 8
t10
9
t
DRDY (O)
t 6
t 3
MSB
LSB
t 2
Figure 10. Self-Clocking Mode, Output Data Read Operation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7710ANZ | 功能描述:IC ADC SIGNAL CONDITIONING 24DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
| AD7710AQ | 功能描述:IC ADC 24BIT DIFF INP 24-CDIP RoHS:否 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:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710AR | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 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:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710AR-REEL | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 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:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710AR-REEL7 | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 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:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
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