Datasheet

(dBr)
-85 -80 -75 -70 -65 -60 -55 -50 -45 -40
(dBr)
-80 -70 -60 -50 -40
-60
-50
-40
-30
-20
-10
0
1
0
-3 -2 -1 0 1 2 3
PSRR (dBr)
(V)V
OUTDC
-60
-50
-40
-30
-20
-10
0
10
-3 -2 -1 0 1 2 3
PSRR (dBr)
(V)V
OUTDC
LM4890
SNAS138L –SEPTEMBER 2001–REVISED MAY 2013 www.ti.com
Typical Performance Characteristics (continued)
PSRR vs DC Output Voltage PSRR vs DC Output Voltage
V
DD
= 3V, A
V
= 4 V
DD
= 3V, A
V
= 10
Figure 32. Figure 33.
PSRR Distribution V
DD
= 5V PSRR Distribution V
DD
= 3V
217Hz, 200mvp-p, 217Hz, 200mvp-p,
-30, +25, and +80°C -30, +25, and +80°C
Figure 34. Figure 35.
Power Supply Rejection Ration vs Power Supply Rejection Ration vs
Bypass Capacitor Size Bypass Capacitor Size
V
DD
= 5V, Input Grounded = 10Ω, Output Load = 8Ω V
DD
= 3V, Input Grounded = 10Ω, Output Load = 8Ω
Figure 36. Top Trace = No Cap, Next Trace Down = 1µf Figure 37. Top Trace = No Cap, Next Trace Down = 1µf
Next Trace Down = 2µf, Bottom Trace = 4.7µf Next Trace Down = 2µf, Bottom Trace = 4.7µf
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