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参数资料
| 型号： | MSC1201Y2RHHRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC36 |
| 封装： | GREEN, PLASTIC, QFN-36 |
| 文件页数： | 18/93页 |
| 文件大小： | 1093K |
| 代理商： | MSC1201Y2RHHRG4 |
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MSC1200
MSC1201
MSC1202
SBAS317E APRIL 2004 REVISED MAY 2006
www.ti.com
25
For system calibration, the appropriate signal must be
applied to the inputs. It then computes an offset that will
nullify offset in the system. The system gain calibration
requires a positive full-scale differential input signal. It then
computes a gain value to nullify gain errors in the system.
Each of these calibrations will take seven tDATA periods to
complete.
Calibration should be performed after power on. It should
also be done after a change in temperature, decimation
ratio, buffer, power supply, voltage reference, or PGA. The
offset DAC will affect offset calibration; therefore, the value
of the offset should be zero before performing a calibration.
At the completion of calibration, the ADC Interrupt bit goes
high, which indicates the calibration is finished and valid
data is available.
ADC DIGITAL FILTER
The Digital Filter can use either the Fast Settling, Sinc2, or
Sinc3 filter, as shown in Figure 10. In addition, the Auto
mode changes the Sinc filter after the input channel or
PGA is changed. When switching to a new channel, it will
use the Fast Settling filter for the next two conversions, the
first of which should be discarded. It will then use the Sinc2
followed by the Sinc3 filter to improve noise performance.
This combines the low-noise advantage of the Sinc3 filter
with the quick response of the Fast Settling Time filter. The
frequency response of each filter is shown in Figure 11.
1
Fast
FILTER
SETTLING TIME
(Conversion Cycles)(1)
Sinc3
Sinc2
Fast
3
2
1
(1) With synchronized channel changes.
CONVERSION CYCLE
AUTO MODE FILTER SELECTION
FILTER SETTLING TIME
Adjustable Digital Filter
Data Out
Modulator
Fast Settling
Sinc2
Sinc3
2
Fast
3
Sinc2
4+
Sinc3
Figure 10. Filter Step Responses
SINC3 FILTER RESPONSE
f
DATA
0
20
40
60
80
100
120
0
1
2
345
0
1
2
345
0
1
2
345
Ga
in
(d
B
)
SINC2 FILTER RESPONSE
f
DATA
0
20
40
60
80
100
120
Ga
in
(d
B
)
FAST SETTLING FILTER RESPONSE
fDATA
0
20
40
60
80
100
120
NOTE: f
DATA = Data Output Rate = 1/tDATA
Ga
in
(d
B
)
(
3dB = 0.318 f
DATA)
(
3dB = 0.469 f
DATA)
(
3dB = 0.262 f
DATA)
Figure 11. Filter Frequency Responses
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSC1201Y2RHHT | 功能描述:模数转换器 - ADC Precision ADC & DAC w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MSC1201Y2RHHTG4 | 功能描述:模数转换器 - ADC Precision ADC & DAC w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MSC1201Y3 | 制造商:BB 制造商全称:BB 功能描述:Precision, Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) with 8051 Microcontroller and Flash Memory |
| MSC1201Y3RHHR | 功能描述:模数转换器 - ADC Precision ADC & DAC w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MSC1201Y3RHHRG4 | 功能描述:模数转换器 - ADC Precision ADC & DAC w/8051 CPU & Flash RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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