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 
     
   
SLOS209G − JANUARY 1998 − REVISED FEBRUARY 2004
29
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TYPICAL CHARACTERISTICS
Figure 39
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
120
80
40
0
100 10k
f − Frequency − Hz
140
100
60
20
1k
160
10
V
DD
= 2.7 V
R
S
= 20 Ω
T
A
= 25°C
− Input Noise Voltage −V
n
nV/ Hz
Figure 40
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
100
f − Frequency − Hz
1k 10k10
V
DD
= 5 V
R
S
= 20 Ω
T
A
= 25°C
120
80
40
0
100
60
20
140
− Input Noise Voltage − nV Hz
V
n
t − Time − s
V
DD
= 5 V
f = 0.1 Hz to 10 Hz
T
A
= 25°C
NOISE VOLTAGE
OVER A 10 SECOND PERIOD
012345678910
Noise Voltage − nV
300
100
−100
−300
200
GND
−200
Figure 41