AD8250
rev. 0 | 页 10 的 24
140
120
100
80
60
40
20
1 10 100 1k 10k 100k 1M
cmrr (db)
频率 (hz)
g = 10
g = 5
g = 2
g = 1
06288-020
图示 18. cmrr vs. 频率
140
120
100
80
60
40
20
1 10 100 1k 10k 100k 1M
cmrr (db)
频率 (hz)
g = 10
g = 5
g = 2
g = 1
06288-021
图示 19. cmrr vs. 频率, 1 kΩ 源 imbalance
10
–10
–8
–6
–4
–2
0
2
4
6
8
–50 –30 –10 10 30 50 70 90 110 130
06288-049
Δ
cmrr (µv/v)
温度 (°c)
图示 20. cmrr vs. 温度, g = 1
25
–10
–5
0
5
10
15
20
1k 10k 100k 1M 10M 100M
增益 (db)
频率 (hz)
g = 10
g = 5
g = 2
g = 1
06288-023
图示 21. 增益 vs. 频率
4
3
2
1
–1
–3
0
–2
–4
–10–8–6–4–20246810
06288-024
非线性 (10ppm/div)
输出 电压 (v)
f = 1khz
图示 22. 增益 非线性, g = 1, r
L
= 10 kΩ, 2 kΩ, 600 Ω
4
3
2
1
–1
–3
0
–2
–4
–10–8–6–4–20246810
06288-025
非线性 (10ppm/div)
输出 电压 (v)
f = 1khz
图示 23. 增益 非线性, g = 2, r
L
= 10 kΩ, 2 kΩ, 600 Ω
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