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| 型号： | MAX1312ECM+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 27/37页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 8CH 4MSPS 48LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 位数： | 12 |
| 采样率（每秒）： | 3.65M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 1.82W |
| 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-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极 |
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MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
______________________________________________________________________________________
33
Gain Error
Gain error is a figure of merit that indicates how well the
slope of the actual transfer function matches the slope
of the ideal transfer function. For the MAX1304–
MAX1306/MAX1308–MAX1310/MAX1312–MAX1314, the
gain error is the difference of the measured full-scale
and zero-scale transition points minus the difference of
the ideal full-scale and zero-scale transition points.
For the unipolar devices (MAX1304/MAX1305/
MAX1306), the full-scale transition point is from 0xFFE
to 0xFFF and the zero-scale transition point is from
0x000 to 0x001.
For the bipolar devices (MAX1308/MAX1309/MAX1310/
MAX1312/MAX1313/MAX1314), the full-scale transition
point is from 0x7FE to 0x7FF and the zero-scale transi-
tion point is from 0x800 to 0x801.
Signal-to-Noise Ratio (SNR)
For a waveform perfectly reconstructed from digital
samples, the theoretical maximum SNR is the ratio of
the full-scale analog input (RMS value) to the RMS
quantization error (residual error). The ideal, theoretical
minimum analog-to-digital noise is caused by quantiza-
tion error only and results directly from the ADC’s reso-
lution (N bits):
SNRdB[max] = 6.02dB
× N + 1.76dB
In reality, there are other noise sources such as thermal
noise, reference noise, and clock jitter.
For these devices, SNR is computed by taking the ratio
of the RMS signal to the RMS noise. RMS noise
includes all spectral components to the Nyquist fre-
quency excluding the fundamental, the first five har-
monics, and the DC offset.
Signal-to-Noise Plus Distortion (SINAD)
SINAD is computed by taking the ratio of the RMS signal
to the RMS noise plus distortion. RMS noise plus distor-
tion includes all spectral components to the Nyquist fre-
quency excluding the fundamental and the DC offset.
Effective Number of Bits (ENOB)
ENOB specifies the dynamic performance of an ADC at
a specific input frequency and sampling rate. An ideal
ADC’s error consists of quantization noise only. ENOB for
a full-scale sinusoidal input waveform is computed as:
Total Harmonic Distortion (THD)
THD is the ratio of the RMS sum of the first five harmon-
ics to the fundamental itself. This is expressed as:
where V1 is the fundamental amplitude, and V2 through
V6 are the amplitudes of the 2nd- through 6th-
order harmonics.
Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio of the RMS amplitude of the fundamen-
tal (maximum signal component) to the RMS value of the
next largest spurious component, excluding DC offset.
SFDR is specified in decibels relative to the carrier (dBc).
Channel-to-Channel Isolation
Channel-to-channel isolation indicates how well each
analog input is isolated from the others. The channel-to-
channel isolation for these devices is measured by
applying DC to channel 1 through channel 7 while an
AC 500kHz, -0.4dBFS sine wave is applied to channel
0. An FFT is taken for channel 0 and channel 1 and the
difference (in dB) of the 500kHz magnitudes is reported
as the channel-to-channel isolation.
Aperature Delay
Aperture delay (tAD) is the time delay from the CONVST
rising edge to the instant when an actual sample is taken.
THD
x
VVVV
V
=
+++
+
20
2
3
2
4
2
5
2
6
2
1
log
ENOB
SINAD
=
176
602
.
SINAD dB
x
SIGNAL
NOISE
DISTORTION
RMS
()
log
()
=
+
20
R
RMS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1313ECM | 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 |
| MAX1313ECM+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1313ECM+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1313ECM-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 |
| MAX1314ECM | 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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