AD604
2.0
1.5
1.0
50
40
30
VGN = 2.5V
VGN = 2.9V
增益误差( dB)的
0.5
0
–0.5
–1.0
–1.5
–2.0
0.2
增益(dB )
20dB/V
VREF = 2.5V
20
10
0
–10
–20
–30
00540-009
VGN = 1.5V
VGN = 0.5V
VGN = 0.1V
30dB/V
VREF = 1.67V
VGN = 0V
00540-012
–40
–50
100k
1M
10M
频率(Hz)
0.7
1.2
VGN ( V)
1.7
2.2
2.7
100M
图9.增益误差与VGN了两个增益缩放值
图12.交流响应为VGN的各个值
25
20
N = 50
VGN1 = 1.0V
VGN2 = 1.0V
ΔG (分贝)
=
G( CH1) - G( CH 2)
2.55
2.54
2.53
2.52
VOCM = 2.5V
–40°C
百分比
V
OUT
(V)
15
2.51
2.50
2.49
2.48
+25°C
10
5
00540-010
2.47
2.46
2.45
0.2
0.7
+85°C
00540-013
0
–1.0
–0.8
–0.6
–0.4
–0.2
0.1
0.3
0.5
0.7
0.9
1.2
VGN ( V)
1.7
2.2
2.7
德尔塔增益( dB)的
图10.增益匹配; VGN1 = VGN2 = 1.0 V
图13.输出失调主场迎战VGN为三个温度
25
20
N = 50
VGN1 = 2.50V
VGN2 = 2.50V
ΔG (分贝)
=
G( CH1) - G( CH 2)
210
190
15
NOISE (NV / HZ)
170
百分比
150
+85°C
130
+25°C
00540-014
10
5
00540-011
110
–40°C
0
–1.0
–0.8
–0.6
–0.4
–0.2
0.1
0.3
0.5
0.7
0.9
90
0.1
0.5
0.9
1.3
1.7
2.1
2.5
2.9
德尔塔增益( dB)的
VGN ( V)
图11.增益匹配; VGN1 = VGN2 = 2.50 V
图14.输出参考噪声与VGN为三个温度
修订版D |第8页32