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參數(shù)資料
| 型號(hào)： | MAX1087EKA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 150ksps, 10-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs in SOT23 |
| 中文描述： | 2-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | SOT-23, 8 PIN |
| 文件頁數(shù)： | 14/15頁 |
| 文件大?。?/td> | 334K |
| 代理商： | MAX1087EKA-T |
M
150ksps, 10-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23
14
______________________________________________________________________________________
Aperture Definitions
Aperture jitter (t
AJ
) is the sample-to-sample variation in
the time between the samples. Aperture delay (t
AD
) is
the time between the rising edge of the sampling clock
and the instant when an actual sample is taken.
Signal-to-Noise Ratio
For a waveform perfectly reconstructed from digital sam-
ples, signal-to-noise ratio (SNR) is the ratio of full-scale
analog input (RMS value) to the RMS quantization error
(residual error). The ideal, theoretical minimum analog-to-
digital noise is caused by quantization error only and
results directly from the ADC
’
s resolution (N-bits):
SNR = (6.02
N + 1.76)dB
In reality, there are other noise sources besides quanti-
zation noise: thermal noise, reference noise, clock jitter,
etc. SNR is computed by taking the ratio of the RMS
signal to the RMS noise, which includes all spectral
components minus the fundamental, the first five har-
monics, and the DC offset.
Signal-to-Noise Plus Distortion
Signal-to-noise plus distortion (SINAD) is the ratio of the
fundamental input frequency
’
s RMS amplitude to RMS
equivalent of all other ADC output signals.
SINAD (dB) = 20
log (Signal
RMS
/ Noise
RMS
)
Effective Number of Bits
Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC
’
s error consists of quanti-
zation noise only. With an input range equal to the full-
scale range of the ADC, calculate the effective number
of bits as follows:
ENOB = (SINAD - 1.76) / 6.02
Total Harmonic Distortion
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 V
1
is the fundamental amplitude, and V
2
through
V
5
are the amplitudes of the 2nd- through 5th-order har-
monics.
Spurious-Free Dynamic Range
Spurious-free dynamic range (SFDR) is the ratio of RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next largest distortion
component.
Chip Information
TRANSISTOR COUNT: 6922
PROCESS: BiCMOS
THD
V
V
V
V
V
=
×
+
+
+
20
2
2
3
2
4
2
5
2
1
log
/
+3V OR +5V
V
LOGIC
= +5V/+3V GND
SUPPLIES
DGND
+5V/+3V
GND
0.1
μ
F
V
DD
DIGITAL
CIRCUITRY
MAX1086
–
MAX1089
R* = 5
*OPTIONAL
Figure 11. Power-Supply and Grounding Connections
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1087ETA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1087ETA+ | 制造商:Maxim Integrated Products 功能描述:150KSPS 10-BIT 2-CHANNEL SINGLE-ENDED AND 1-CHANNEL TRUE-DIF - Rail/Tube |
| MAX1087ETA+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 150ksps 10-Bit 2-Ch Single-Ended RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1087ETA-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1088 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:150ksps.10-Bit.2-Channel Single-Ended.and 1-Channel True-Differential ADCs in SOT23 |
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