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TM7708 Scheda tecnica(PDF) 14 Page - Shenzhen Titan Micro Electronics Co., Ltd.

Il numero della parte TM7708
Spiegazioni elettronici  Two-bIt digital analog converter
PDF  46 Pages
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Produttore elettronici  TITAN [Shenzhen Titan Micro Electronics Co., Ltd.]
Homepage  http://www.titanmec.com/index.php/en/
Logo TITAN - Shenzhen Titan Micro Electronics Co., Ltd.

TM7708 Scheda tecnica(HTML) 14 Page - Shenzhen Titan Micro Electronics Co., Ltd.

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24 bit 模数转换器 TM7707/8
10.2 TM7707/8 3V 输出噪声
2a 表示当
fCLKIN=2.4576MHZ 时,对于某些典型的凹口和-3dB 频率,TM7707/8 的
输出均方根噪声和有效分辨率;表
2b 给出
fCLKIN=1MHZ 时的数据。给出的数据适用于 VREF
+1.25V 且 BUFFER=0 的双极性输入范围。这些数据是典型值并在模拟输入电压为 0V 的
情况下产生。在每一个表中括号内的数据是器件的有效分辨率(舍入至最接近的
0.5LSB)。
器件的有效分辨率定义为输出均方根噪声与输入满刻度(即,
2×VREF/GAIN)之比。应当
注意,不是用峰
-峰输出噪声数据进行计算。峰-峰噪声数据可以高达均方根数据的 6.6 倍,
同时,基于峰
-峰噪声的有效分辨率数据可以比表中口号内所示的基于均方根噪声的有效分
辨率低
2.5 位。
器件的输出噪声来自两个源。第一个源是调制器的实现中所用半导体器件的电噪声(器
1Hz
262Hz
2850
(11)
1258
(11)
680
(11)
297
(11)
131
(11)
99
(10.5)
53
(10.5)
28
(10.5)
1bfCLKIN=1MHZ、BUFFER=0 时
TM7707/8 输出噪声∕分辨率与增益和第 1 个凹口的关系(5V 电压)
Filter
First
Typical Output RMS Noise in μ V(Effective Resolution in bits)
Notch and
O/P—3 dB
Gain of
Gain of
Gain of
Gain of
Gain of
Gain of
Gain of
Gain of
Data Rate
Frequency
1
2
4
8
16
32
64
128
2Hz
0.52Hz
0.75
(22.5)
0.56
(22)
0.31
(22)
0.19
(21.5)
0.17
(21)
0.14
(20)
0.14
(19)
0.14
(18)
4Hz
1.05Hz
1.04
(22)
0.88
(21.5)
0.45
(21.5)
0.28
(21)
0.21
(20.5)
0.21
(19.5)
0.21
(18.5
)
0.21
(17.5)
10Hz
2.62Hz
1.66
(21.5)
1.01
(21.5)
0.77
(20.5)
0.41
(20.5)
0.27
(19.5)
0.35
(1 9)
0.35
(18)
0.35
(17)
25Hz
6.55Hz
5.2
(20)
2.06
(20)
1.4
(20)
0.86
(19.5)
0.63
(19)
0.61
(18)
0.59
(17)
0.59
(16)
30Hz
7.86Hz
7.1
(19.5)
3.28
(19.5)
1.42
(19.5)
1.07
(19)
0.78
(18.5)
0.64
(18)
0.61
(17)
0.61
(16)
50Hz
13.1Hz
19.4
(18)
9.11
(18)
4.2
(18)
2.45
(18)
1.56
(17.5)
1.1
(17)
0.82
(16.5)
0.8
(15.5)
60Hz
15.72Hz
25
(17.5)
16
(17.5)
6.5
(17.5)
2.9
(17.5)
1.93
(17.5)
1.4
(17)
1.1
(16)
0.98
(15.5)
100Hz
26.2Hz
102
(15.5)
58
(15.5)
25
(15.5)
13.5
(15.5)
5.7
(15.5)
3.9
(15.5)
2.1
(15)
1.3
(15)
200Hz
52.4Hz
637
(13)
259
(13)
130
(13)
76
(13)
33
(13)
16
(13)
11
(13)
6
(12.5)
400Hz
104.8Hz
2830
(11)
1430
(11)
720
(11)
334
(11)
220
(10.5)
94
(10.5)
54
(10.5)
25
(10.5)



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