Datasheet

140
120
100
80
60
40
20
0
Power-SupplyRejectionRatio(dB)
10 100
1k 10k 100k
Frequency(Hz)
VSN
VSP
140
120
100
80
60
40
20
0
Common-ModeRejectionRatio(dB)
10 100
1k 10k 100k
Frequency(Hz)
100
10
1
0.1
0.01
Noise( V/ )m Hz
Ö
0.1 1 10 100
1k 10k 100k
Frequency(Hz)
G=1/8
G=1
G=4
G=128
60
50
40
30
20
10
0
10
20
-
-
Gain(dB)
10 100
1k 10k 100k 1M 10M
Frequency(Hz)
3.0
2.5
2.0
1.5
1.0
0.5
0
InputVoltageSwingtoRail(V)
-50 -25 0 50 100 150
Temperature( C)
°
IR-
IR+
25
75
125
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
InputBiasCurrent(nA)
1 2
4
8 16 32 64 128
GainSetting(V/V)
PGA280
SBOS487A –JUNE 2009–REVISED SEPTEMBER 2009................................................................................................................................................ www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, VSP = +15V, VSN = –15V, VSON = 0V, VSOP = 5V, DVDD = +3V, DGND = 0V, R
L
= 2.5kΩ to VSOP/2 =
VOCM, G = 1V/V, using internal clock, BUF inactive, V
CM
= 0V, and differential input and output, unless otherwise noted.
POWER-SUPPLY REJECTION vs FREQUENCY COMMON-MODE REJECTION vs FREQUENCY
Figure 13. Figure 14.
INPUT-REFERRED NOISE SPECTRUM SMALL-SIGNAL GAIN vs FREQUENCY
Figure 15. Figure 16.
INPUT VOLTAGE RANGE LIMITS vs TEMPERATURE BIAS CURRENT vs GAIN SETTING
Figure 17. Figure 18.
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