TS4871
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图. 10 : 电源 供应 拒绝 比率 (psrr)
vs 电源 供应
图. 12 : 电源 供应 拒绝 比率 (psrr)
vs 绕过 电容
图. 14 : 电源 供应 拒绝 比率 (psrr)
vs 反馈 电阻
图. 11 : 电源 供应 拒绝 比率 (psrr)
vs 反馈 电容
图. 13 : 电源 供应 拒绝 比率 (psrr)
vs 输入 电容
10 100 1000 10000 100000
-80
-70
-60
-50
-40
-30
vcc = 5v, 3.3v &放大; 2.6v
cb = 1
µ
f &放大; 0.1
µ
F
vripple = 200mvrms
rfeed = 22
Ω
输入 = floating
rl = 8
Ω
tamb = 25
°
C
psrr (db)
频率 (hz)
10 100 1000 10000 100000
-80
-70
-60
-50
-40
-30
-20
-10
Cb=100
µ
F
Cb=10
µ
F
Cb=47
µ
F
Cb=1
µ
F
vcc = 5, 3.3 &放大; 2.6v
rfeed = 22k
rin = 22k, cin = 1
µ
F
rg = 100
Ω
, rl = 8
Ω
tamb = 25
°
C
psrr (db)
频率 (hz)
10 100 1000 10000 100000
-80
-70
-60
-50
-40
-30
-20
-10
Rfeed=10k
Ω
Rfeed=22k
Ω
Rfeed=47k
Ω
Rfeed=110k
Ω
vcc = 5, 3.3 &放大; 2.6v
cb = 1
µ
f &放大; 0.1
µ
F
vripple = 200mvrms
输入 = floating
rl = 8
Ω
tamb = 25
°
C
psrr (db)
频率 (hz)
10 100 1000 10000 100000
-80
-70
-60
-50
-40
-30
-20
-10
Cfeed=680pF
Cfeed=330pF
Cfeed=150pF
Cfeed=0
vcc = 5, 3.3 &放大; 2.6v
cb = 1
µ
f &放大; 0.1
µ
F
rfeed = 22k
Ω
vripple = 200mvrms
输入 = floating
rl = 8
Ω
tamb = 25
°
C
psrr (db)
频率 (hz)
10 100 1000 10000 100000
-60
-50
-40
-30
-20
-10
vcc = 5, 3.3 &放大; 2.6v
rfeed = 22k
Ω
, rin = 22k
cb = 1
µ
F
rg = 100
Ω
, rl = 8
Ω
tamb = 25
°
C
Cin=22nF
Cin=100nF
Cin=220nF
Cin=330nF
Cin=1
µ
F
psrr (db)
频率 (hz)