参数资料
| 型号： | AD7711AN |
| 厂商： | Analog Devices Inc |
| 文件页数： | 27/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT RTD I SOURCE 24-DIP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 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）： | 52.5mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 80°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： | 1 个单端，单极；1 个单端，双极；1 个差分，单极；1 个差分，双极 |
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REV. G
–8–
AD7711
Pin
Mnemonic
Function
20
RFS
Receive Frame Synchronization. Active low logic input used to access serial data from the device. In the
self-clocking mode, the SCLK and SDATA lines both become active after
RFS goes low. In the external
clocking mode, the SDATA line becomes active after
RFS goes low.
21
DRDY
Logic Output. A falling edge indicates that a new output word is available for transmission. The
DRDY pin
will return high upon completion of transmission of a full output word.
DRDY is also used to indicate
when the AD7711 has completed its on-chip calibration sequence.
22
SDATA
Serial Data. Input/output with serial data being written to either the control register or the calibration
registers and serial data being accessed from the control register, calibration registers, or the data register.
During an output data read operation, serial data becomes active after
RFS goes low (provided DRDY is
low). During a write operation, valid serial data is expected on the rising edges of SCLK when
TFS is low.
The output data coding is natural binary for unipolar inputs and offset binary for bipolar inputs.
23
DVDD
Digital Supply Voltage, 5 V. DVDD should not exceed AVDD by more than 0.3 V in normal operation.
24
DGND
Ground Reference Point for Digital Circuitry.
TERMINOLOGY
Intergral Nonlinearity
This is the maximum deviation of any code from a straight line
passing through the endpoints of the transfer function. The end-
points of the transfer function are zero-scale (not to be confused
with bipolar zero), a point 0.5 LSB below the first code transi-
tion (000 . . . 000 to 000 . . . 001) and full scale, a point 0.5 LSB
above the last code transition (111 . . . 110 to 111 . . . 111). The
error is expressed as a percentage of full scale.
Positive Full-Scale Error
Positive full-scale error is the deviation of the last code transi-
tion (111 . . . 110 to 111 . . . 111) from the ideal input full-scale
voltage. For AIN1(+), the ideal full-scale input voltage is
(AIN1(–) + VREF/GAIN – 3/2 LSBs); for AIN2, the ideal full-
scale input voltage is VREF/GAIN – 3/2 LSBs. It applies to both
unipolar and bipolar analog input ranges.
Unipolar Offset Error
Unipolar offset error is the deviation of the first code transition
from the ideal voltage. For AIN1(+), the ideal input voltage is
(AIN1(–) + 0.5 LSB); for AIN2, the ideal input is 0.5 LSB
when operating in the unipolar mode.
Bipolar Zero Error
This is the deviation of the midscale transition (0111 . . . 111
to 1000 . . . 000) from the ideal input voltage. For AIN1(+), the
ideal input voltage is (AIN1(–) – 0.5 LSB); for AIN2, the ideal
input is – 0.5 LSB when operating in the bipolar mode.
Bipolar Negative Full-Scale Error
This is the deviation of the first code transition from the ideal
input voltage. For (AIN1(+), the ideal input voltage is (AIN1(–)
– VREF/GAIN + 0.5 LSB); for AIN2 the ideal input is – VREF/GAIN
+ 0.5 LSB when operating in the bipolar mode.
Positive Full-Scale Overrange
Positive full-scale overrange is the amount of overhead avail-
able to handle input voltages on the AIN1(+) input greater
than AIN1(–) + VREF/GAIN or on the AIN2 input greater
than + VREF/GAIN (for example, noise peaks or excess
voltages due to system gain errors in system calibration rou-
tines) without introducing errors due to overloading the analog
modulator or to overflowing the digital filter.
Negative Full-Scale Overrange
This is the amount of overhead available to handle voltages on
AIN1(+) below AIN1(–) – VREF/GAIN or on AIN2 below
–VREF/GAIN without overloading the analog modulator or over-
flowing the digital filter. Note that the analog input will accept
negative voltage peaks on AIN1(+) even in the unipolar mode
provided that AIN1(+) is greater than AIN1(–) and greater than
VSS – 30 mV.
Offset Calibration Range
In the system calibration modes, the AD7711 calibrates its
offset with respect to the analog input. The offset calibration
range specification defines the range of voltages that the AD7711
can accept and still calibrate offset accurately.
Full-Scale Calibration Range
This is the range of voltages that the AD7711 can accept in the
system calibration mode and still calibrate full-scale correctly.
Input Span
In system calibration schemes, two voltages applied in sequence
to the AD7711’s analog input define the analog input range.
The input span specification defines the minimum and maxi-
mum input voltages from zero- to full-scale that the AD7711
can accept and still calibrate gain accurately.
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相关代理商/技术参数 |
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| AD7711ANZ | 功能描述:IC ADC 24BIT RTD I SOURCE 24-DIP 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 |
| AD7711ANZ | 制造商:Analog Devices 功能描述:IC ADC 24-BIT SIGMA DELTA |
| AD7711AQ | 功能描述:IC ADC 24BIT RTD I SOURCE 24CDIP 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 |
| AD7711AR | 功能描述:IC ADC 24BIT RTD I SOURCE 24SOIC 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 |
| AD7711AR-REEL | 功能描述:IC ADC 24BIT RTD I SOURCE 24SOIC 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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