- 您现在的位置：买卖IC网 > PDF目录383310 > MAX1127 (Maxim Integrated Products, Inc.) Quad, 12-Bit, 65Msps, 1.8V ADC with Serial LVDS Outputs PDF资料下载
参数资料
| 型号： | MAX1127 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 串行ADC |
| 英文描述： | Quad, 12-Bit, 65Msps, 1.8V ADC with Serial LVDS Outputs |
| 中文描述： | 四路、12位、65Msps、1.8V ADC，串行LVDS输出 |
| 文件页数： | 23/25页 |
| 文件大小： | 1661K |
| 代理商： | MAX1127 |
M
Quad, 12-Bit, 65Msps, 1.8V ADC with
Serial LVDS Outputs
______________________________________________________________________________________
23
Bipolar offset error is the amount of deviation 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 MAX1127, 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 bipolar devices (MAX1127), the full-scale transi-
tion point is from 0x7FE to 0x7FF for two’s complement
output format (0xFFE to 0xFFF for offset binary) and the
zero-scale transition point is from 0x800 to 0x801 for
two’s complement (0x000 to 0x001 for offset binary).
Crosstalk
Crosstalk indicates how well each analog input is isolat-
ed from the others. For the MAX1127, a 5.3MHz,
-0.5dBFS analog signal is applied to one channel while
a 30.3MHz, -0.5dBFS analog signal is applied to all
other channels. An FFT is taken on the channel with the
5.3MHz analog signal. From this FFT, the crosstalk is
measured as the difference in the 5.3MHz and
30.3MHz amplitudes.
Aperture Delay
Aperture delay (t
AD
) is the time defined between the
rising edge of the sampling clock and the instant when
an actual sample is taken. See Figure 10.
Aperture Jitter
Aperture jitter (t
AJ
) is the sample-to-sample variation in
the aperture delay. See Figure 10.
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):
SNR
dB[max]
= 6.02
dB
x N x 1.76
dB
In reality, there are other noise sources besides quantiza-
tion noise: thermal noise, reference noise, clock jitter, etc.
For the MAX1127, 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 six harmon-
ics (HD2–HD7), and the DC offset.
Signal-to-Noise Plus Distortion (SINAD)
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 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 from:
Total Harmonic Distortion (THD)
THD is the ratio of the RMS sum of the first six harmon-
ics of the input signal to the fundamental itself. This is
expressed as:
THD
V
V
V
V
V
V
V
=
×
+
+
+
+
+
20
22
32
42
52
62
72
1
log
ENOB
SINAD
=
1 76
.
6 02
.
CLK
ANALOG
INPUT
SAMPLED
DATA
T/H
t
AD
HOLD
TRACK
HOLD
t
AJ
Figure 10. Aperture Jitter/Delay Specifications
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1127EGK | Quad, 12-Bit, 65Msps, 1.8V ADC with Serial LVDS Outputs |
| MAX1134 | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-23 0 to 70 |
| MAX1134BCAP | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-23 0 to 70 |
| MAX1134BEAP | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70 |
| MAX1135BCAP | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1127EGK | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1127EGK+D | 制造商:Maxim Integrated Products 功能描述:ADC QUAD PIPELINED 65MSPS 12-BIT SERL 68QFN - Bulk |
| MAX1127EGK+TD | 制造商:Maxim Integrated Products 功能描述:ADC QUAD PIPELINED 65MSPS 12-BIT SERL 68QFN - Tape and Reel |
| MAX1127EVKIT | 制造商:Maxim Integrated Products 功能描述:QUAD 65MSPS 12-BIT ADC WITH SERIAL LVDS - Bulk |
| MAX113 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4-Digit.Up/Down Counter Decoder Driver[MM74C945/MM74C947/MM74C945C/D/MM74C945N ] |
发布紧急采购，3分钟左右您将得到回复。