Datasheet

0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
0
35
Magnitude(dB)
Frequency(MHz)
5
10 15 20 25 30
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
0
35
Magnitude(dB)
Frequency(MHz)
5
10 15 20 25 30
0
-
-
-
-
-
-
20
40
60
80
100
120
Frequency(MHz)
1.80
2.20
Magnitude(dBFS)
1.951.901.85 2.00
PGA=30dB
V =1.0V
IMD3=54.2dB
CNTL
2.05 2.10 2.15
-32
-6
-86.2
0
-
-
-
-
-
-
20
40
60
80
100
120
Frequency(MHz)
4.80
5.20
Magnitude(dBFS)
4.954.904.85 5.00
PGA=30dB
V =1.0V
IMD3=58.5dB
CNTL
5.05 5.10 5.15
-32
-6
-90.5
12k
10k
8k
6k
0
100M
Magnitude( )W
100
80
60
40
20
0
-100
Phase( )°
-80
-20
-40
-60
4k
2k
Frequency(Hz)
100k
1M 10M
Magnitude(Z )
IN
Phase
1.0
0.5
0
-
-
0.5
1.0
SamplePoints
0
80
Output( Full-Scale)±
302010 40
V =1V (+12dBFS)
PGA=20dB
V =0.54V
IN PP
CNTL
50 60 70 90 100 110 120
AFE5805
www.ti.com SBOS421D –MARCH 2008–REVISED MARCH 2010
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.
10MHz LOW-PASS FILTER RESPONSE 15MHz LOW-PASS FILTER RESPONSE
Figure 29. Figure 30.
INTERMODULATION DISTORTION INTERMODULATION DISTORTION
(1.99MHz and 2.01MHz) (4.99MHz and 5.01MHz)
Figure 31. Figure 32.
INPUT IMPEDANCE vs FREQUENCY LNA OVERLOAD
Figure 33. Figure 34.
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