Datasheet

300
250
200
150
100
50
V (V)
CNTL
0
1.2
Noise(nV/ )ÖHz
0.30.20.1 0.4 1.10.5 1.00.90.80.70.6
Frequency=2MHz
PGA=30dB
PGA=20dB
300
250
200
150
100
50
V (V)
CNTL
0
1.2
Noise(nV/ )ÖHz
0.30.20.1 0.4 1.10.5 1.00.90.80.70.6
Frequency=5MHz
PGA=30dB
PGA=20dB
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
Frequency(MHz)
1
10
Noise(nV/ )ÖHz
R =1kW
S
R =400W
S
R =200W
S
R =50W
S
V =1.2V
CNTL
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Frequency(MHz)
1
10
Noise(nV/ )ÖHz
R =1kW
S
R =400W
S
R =200W
S
R =50W
S
V =1.2V
CNTL
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
20
CurrentNoise(pA/ )ÖHz
Frequency(MHz)
1
R =
S
400W
10
R =
S
1kW
R =200W
S
V =1.2V
CNTL
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Frequency(MHz)
1
10
NoiseFigure(dB)
R =1kW
S
R =400W
S
R =200W
S
R =50W
S
PGA=30dB
V =1.2V
CNTL
AFE5805
SBOS421D –MARCH 2008–REVISED MARCH 2010 www.ti.com
TYPICAL CHARACTERISTICS (continued)
AVDD_5V = 5.0V, AVDD1 = AVDD2 = DVDD = 3.3V, LVDD = 1.8V, single-ended input into LNA, ac-coupled with 0.1mF,
V
CNTL
= 1.0V, f
IN
= 5MHz, clamp disabled, LPF = 15MHz, clock = 40MSPS, 50% duty cycle, internal reference mode,
ISET = 56kΩ, and LVDS buffer setting = 3.5mA, at ambient temperature T
A
= +25°C, unless otherwise noted.
OUTPUT-REFERRED NOISE vs V
CNTL
OUTPUT-REFERRED NOISE vs V
CNTL
Figure 11. Figure 12.
OUTPUT-REFERRED NOISE vs FREQUENCY vs R
S
INPUT-REFERRED NOISE vs FREQUENCY vs R
S
Figure 13. Figure 14.
CURRENT NOISE vs FREQUENCY OVER R
SOURCE
NOISE FIGURE vs FREQUENCY vs R
S
Figure 15. Figure 16.
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