OPA189, OPA2189
ZHCSH15A –SEPTEMBER 2017–REVISED NOVEMBER 2017
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TA = 25°C 时，VS = ±18V，VCM = VS / 2，RLOAD = 10kΩ 已连接至 VS / 2，并且 CL = 100pF（除非另有说明）
1
-40
1
-40
G = -1, 2k-ꢀ Load
G = -1, 600-ꢀ Load
G = -1, 10k-ꢀ Load
G = +1, 2k-ꢀ Load
G = +1, 600-ꢀ Load
G = +1, 10k-ꢀ Load
G = -1, 600-ꢀ Load
G = -1, 2k-ꢀ Load
G = -1, 10k-ꢀ Load
G = +1, 600-ꢀ Load
G = +1, 2k-ꢀ Load
G = +1, 10k-ꢀ Load
0.1
-60
0.1
-60
0.01
-80
0.01
-80
0.001
0.0001
0.00001
-100
-120
-140
0.001
0.0001
0.00001
-100
-120
-140
20
200
2k
20k
0.01
0.1
1
10
Frequency (Hz)
Output Amplitude (VRMS)
C004
C004
VOUT = 3.5V
VRMS，BW = 90kHz
f = 1kHz，
BW = 90kHz
图 19. THD+N 比与频率间的关系
图 20. THD+N 与输出幅度间的关系
1.5
1.2
0.9
0.6
0.3
2
1.5
1
VS = ± 18 V
VS = 4.5 V
VS = ± 2.25 V
0.5
0
0
0
9
18
27
36
0
25
50
75
100 125 150
œ75 œ50 œ25
Supply Voltage (V)
Temperature (°C)
C001
C001
图 21. 静态电流与电源电压间的关系
图 22. 静态电流与温度间的关系
180
0.001
0.01
0.1
180
170
160
150
140
130
120
0.001
0.01
0.1
VS = ± 18 V
170
160
150
140
130
120
VS = ± 18 V
VS = ± 2.25
VS = ± 2.25
1
1
0
25
50
75
100
125
0
25
50
75
100
125
œ50
œ25
œ50
œ25
Temperature (°C)
Temperature (°C)
C001
C001
10kΩ 负载
2kΩ 负载
图 23. 开环增益与温度间的关系
图 24. 开环增益与温度间的关系
14
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