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参数资料
| 型号： | ADC124S021EVAL |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | 4 Channel, 200 kSPS, 12-Bit A/D Converter |
| 中文描述： | 4通道，200 kSPS的，12位A / D转换器 |
| 文件页数： | 17/19页 |
| 文件大小： | 909K |
| 代理商： | ADC124S021EVAL |
Applications Information
(Continued)
3.0 ADC124S021 TRANSFER FUNCTION
The output format of the ADC124S021 is straight binary.
Code transitions occur midway between successive integer
LSB values. The LSB width for theADC124S021 is V
/4096.
The ideal transfer characteristic is shown in Figure 3. The
transition from an output code of 0000 0000 0000 to a code
of 0000 0000 0001 is at 1/2 LSB, or a voltage of V
A
/8192.
Other code transitions occur at steps of one LSB.
4.0 TYPICAL APPLICATION CIRCUIT
A typical application of the ADC124S021 is shown in Figure
4. Power is provided in this example by the National Semi-
conductor LP2950 low-dropout voltage regulator, available in
a variety of fixed and adjustable output voltages. The power
supply pin is bypassed with a capacitor network located
close to the ADC124S021. Because the reference for the
ADC124S021 is the supply voltage, any noise on the supply
will degrade device noise performance. To keep noise off the
supply, use a dedicated linear regulator for this device, or
provide sufficient decoupling from other circuitry to keep
noise off the ADC124S021 supply pin. Because of the
ADC124S021’s low power requirements, it is also possible to
use a precision reference as a power supply to maximize
performance. The four-wire interface is also shown con-
nected to a microprocessor or DSP.
20124311
FIGURE 3. Ideal Transfer Characteristic
20124313
FIGURE 4. Typical Application Circuit
A
www.national.com
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相关代理商/技术参数 |
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| ADC124S051 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:4 Channel, 500 kSPS, 12-Bit A/D Converter |
| ADC124S051CIMM | 功能描述:模数转换器 - ADC 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 |
| ADC124S051CIMM/NOPB | 功能描述:模数转换器 - ADC 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 |
| ADC124S051CIMMX | 功能描述:模数转换器 - ADC 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 |
| ADC124S051CIMMX/NOPB | 功能描述:模数转换器 - ADC 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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