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參數(shù)資料
| 型號： | MAX1333ETE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 3Msps/2Msps, 5V/3V, 2-Channel, True-Differential 12-Bit ADCs |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, QCC16 |
| 封裝： | 3 X 3 MM, 0.8 MM HEIGHT, MO-220, TQFN-16 |
| 文件頁數(shù)： | 23/25頁 |
| 文件大?。?/td> | 379K |
| 代理商： | MAX1333ETE |
between the measured midscale transition point and
the ideal midscale transition point.
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 MAX1332/
MAX1333, the gain error is the difference of the mea-
sured full-scale and zero-scale transition points minus
the difference of the ideal full-scale and zero-scale
transition points.
For the unipolar input, the full-scale transition point is
from 0xFFE to 0xFFF and the zero-scale transition point
if from 0x000 to 0x001.
For the bipolar input, the full-scale transition point is
from 0x7FE to 0x7FF and the zero-scale transition point
is from 0x800 to 0x801.
Aperture Jitter
Aperture jitter (t
AJ
) is the sample-to-sample variation in
the aperture delay.
Aperture Delay
Aperture delay (t
AD
) is the time defined between the
falling edge of the CNVST and the instant when an
actual sample is taken (Figure 21).
Signal-to-Noise Ratio (SNR)
SNR is a dynamic figure of merit that indicates the con-
verter’s noise performance.
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):
SNR
dB[max]
= 6.02
dB
x N + 1.76
dB
In reality, there are other noise sources such as thermal
noise, reference noise, and clock jitter that also
degrade SNR.
For the MAX1332/MAX1333, SNR is computed by tak-
ing the ratio of the RMS signal to the RMS noise. RMS
noise includes all spectral components to the Nyquist
frequency excluding the fundamental, the first five har-
monics, and the DC offset.
Signal-to-Noise Plus Distortion (SINAD)
SINAD is a dynamic figure of merit that indicates the
converter’s noise and distortion performance.
SINAD is computed by taking the ratio of the RMS sig-
nal to the RMS noise plus distortion. RMS noise plus
distortion includes all spectral components to the
Nyquist frequency excluding the fundamental and the
DC offset:
Effective Number of Bits (ENOB)
ENOB specifies the global accuracy of an ADC at a spe-
cific 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 from:
Total Harmonic Distortion (THD)
THD is a dynamic figure of merit that indicates how much
harmonic distortion the converter adds to the signal.
THD is the ratio of the RMS sum of the first five harmon-
ics of the fundamental signal to the fundamental itself.
This is expressed as:
where V
1
is the fundamental amplitude, and V
2
through
V
6
are the amplitudes of the 2nd- through 6th-order
harmonics.
THD
V
V
V
V
V
V
=
×
+
+
+
+
20
2
3
4
1
5
6
2
2
2
2
2
log
ENOB
SINAD
=
1 76
6 02
.
.
SINAD dB
SIGNAL
NOISE DISTORTION
(
RMS
RMS
)
(
)
log
=
×
20
M
3Msps/2Msps, 5V/3V, 2-Channel, True-
Differential 12-Bit ADCs
______________________________________________________________________________________
23
HOLD
ANALOG
INPUT
SAMPLED
DATA (T/H)
T/H
t
AD
t
AJ
TRACK
TRACK
CNVST
Figure 21. T/H Aperture Timing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX13342EEBC- | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX13342EEBC+ | 制造商:Maxim Integrated Products 功能描述:USB FULL SPEED TRANSCEIVER - Rail/Tube |
| MAX13342EEBC+T | 功能描述:USB 接口集成電路 Full-Speed 12Mbps USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| MAX13342EEBC-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX13342EETD+T | 功能描述:USB 接口集成電路 Full-Speed 12Mbps USB Transceiver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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