参数资料
型号: EVAL-AD7170EBZ
厂商: Analog Devices Inc
文件页数: 5/16页
文件大小: 0K
描述: BOARD EVAL FOR AD7170
标准包装: 1
ADC 的数量: 1
位数: 12
采样率(每秒): 125
数据接口: 串行
输入范围: ±VREF
工作温度: -40°C ~ 105°C
已用 IC / 零件: AD7170
已供物品:
Data Sheet
AD7170
Rev. A | Page 13 of 16
APPLICATIONS INFORMATION
The AD7170 provides a low cost, high resolution analog-to-
digital function. Because the analog-to-digital function is
provided by a Σ-Δ architecture, the part is more immune to
noisy environments, making it ideal for use in sensor measure-
ment and industrial and process-control applications.
TEMPERATURE SYSTEM
Figure 13 shows the AD7170 used in a temperature measure-
ment system. The thermistor is connected in series with a
precision resistor, RREF, the precision resistor being used to
generate the reference voltage. The value of RREF is equal to the
maximum resistance produced by the thermistor. The complete
dynamic range of the ADC is then used, resulting in optimum
performance.
12-BIT Σ-
ADC
AD7170
GND
VDD
INTERNAL
CLOCK
VDD
RREF
REFIN(+)
AIN(+)
AIN(–)
REFIN(–)
SCLK
DOUT/RDY
PDRST
08
41
6-
0
13
Figure 13. Temperature System Using the AD7170
SIGNAL CONDITIONING CIRCUIT
Figure 14 shows the AD7170 used in a signal conditioning
circuit for a single-ended analog input. In a low side shunt
current monitor, a low resistance shunt resistor converts the
current to voltage. The resulting voltage is amplified and
applied to the AD7170.
08
41
6-
0
18
AD7170
REFIN(+)
AIN(+)
AIN(–)
REFIN(–)
GND VDD
INTERNAL
CLOCK
SCLK
DOUT/RDY
AD5041
AD8631
1F
ANALOG
INPUT
1k
32k
12-BIT
Σ- ADC
Figure 14. Signal Conditioning Circuit
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