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参数资料
| 型号： | MAX1254BEUE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/29页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT W/REF 16-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 位数： | 12 |
| 采样率（每秒）： | 94k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 15mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 8 个单端，单极；8 个单端，双极；4 个差分，单极；4 个差分，双极 |
| 产品目录页面： | 1396 (CN2011-ZH PDF) |
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MAX1253/MAX1254
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
28
______________________________________________________________________________________
Gain Error
The gain error is the difference between the ideal and
actual value of the analog input difference between the
first and last transitions of the ADC output. The first
transition is from digital code 0 to code 1, and the last
from code (2N-2) to code (2N-1), where N = number of
ADC bits for straight binary output code. For the
MAX1253/MAX1254, the ideal difference in the input
voltage between code transitions 0 to 1 and code tran-
sitions 4094 to 4095 is 4094 x LSB. For the MAX1253,
this is 2.5V - 2 x LSB = 2.498780V, and for the
MAX1254, this is 4.096V - 2 x LSB = 4.094V. Gain error
is a DC specification, usually normalized to the FS ideal
analog value and given in percent of FSR or ppm.
Signal-to-Noise Ratio
For a waveform perfectly reconstructed from digital
samples, signal-to-noise ratio (SNR) is the ratio of the
full-scale analog input (RMS value) to the RMS quantiza-
tion error (residual error). The ideal theoretical minimum
analog-to-digital noise is caused by quantization error
only, results directly from the ADC’s resolution (N bits),
and can be calculated with the following equation:
SNR = (6.02 x N + 1.76)dB
Signal-to-Noise Plus Distortion
Signal-to-noise plus distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to the
RMS equivalent of all other ADC output signals:
SINAD (dB) = 20 x log (SignalRMS / NoiseRMS)
There are other noise sources besides quantization
noise, including thermal noise, reference noise, clock
jitter, etc. Therefore, SINAD is calculated by taking the
ratio of the full-scale signal to the RMS noise, which
includes all spectral components minus the fundamen-
tal and the first five harmonics.
Total Harmonic Distortion (THD)
Total harmonic distortion (THD) is the ratio of the RMS
sum of the first five harmonics of the input signal to the
fundamental itself. This is expressed as:
where V1 is the fundamental RMS value, and V2
through V5 are the RMS values of the 2nd- through 5th-
order harmonics, respectively.
Power-Supply Rejection
Power-supply rejection is the ratio between the change
in the ADC full-scale output to the change in power-
supply voltage when the power-supply voltage is varied
from its nominal value. It is specified in V/V or V/V.
THD
x
V
VVV
V
log
=
++
+
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20
2
3
2
4
2
5
2
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1254BEUE+ | 功能描述:模数转换器 - ADC 12-Bit 10Ch 94ksps 5V Precision 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 |
| MAX1254BEUE+T | 功能描述:模数转换器 - ADC 12-Bit 10Ch 94ksps 5V Precision 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 |
| MAX1254BEUE-T | 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 |
| MAX1254EVC16 | 功能描述:模数转换器 - ADC Stand-Alone 10-Channel 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor 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 |
| MAX1254EVKIT | 功能描述:数据转换 IC 开发工具 Evaluation Kit/Evaluation System for the MAX1254 MAX1253 RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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