Datasheet

50
40
30
20
10
0
10-
0 0.1
1.2
Gain(dB)
V (V)
CNTL
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
PGA= 30dB
PGA= 25dB
PGA= 20dB
PGA= 27dB
TGCIMode
LowNoise
0
3
6
9
12
15
18
-
-
-
-
-
-
0 3
30
NormalizedGain(dB)
Frequency(MHz)
6 9 12 15 18 21 24 27
0
3
6
9
12
15
18
-
-
-
-
-
-
1.0
5.5
30.0
NormalizedGain(dB)
Frequency(MHz)
10.0 14.5 19.0 23.5 28.0
300
250
200
150
100
50
0
0 0.1
1.2
Noise(nV/ )Ö
Hz
V (V)
CNTL
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
PGA= 30dB
PGA= 20dB
Frequency=2MHz
TGCIMode,LowNoise
300
250
200
150
100
50
0
0 0.1
1.2
Noise(nV/ )Ö
Hz
V (V)
CNTL
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
Frequency=5MHz
TGCIMode,LowNoise
PGA= 30dB
PGA= 20dB
350
300
250
200
150
100
50
0
0 0.1
1.2
Noise (nV/ )Ö
Hz
V (V)
CNTL
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
PGA = 30dB
PGA = 20dB
Frequency = 2MHz
TGC II Mode, Low Power
AFE5804
SBOS442C –JUNE 2008–REVISED OCTOBER 2011 www.ti.com
TYPICAL CHARACTERISTICS
AVDD_5V = 5.0V, AVDD1 = VDD2 = DVDD = 3.3V, LVDD = 1.8V, single-ended input into LNA, ac-coupled with 1.0μF,
V
CNTL
= 1.0V, f
IN
5MHz, Clock = 40MSPS, 50% duty cycle, internal reference mode, ISET = 56kΩ, LVDS buffer setting =
3.5mA, at ambient temperature T
A
= +25°C, unless otherwise noted.
GAIN vs V
CNTL
AT 5MHz 12.5MHz FILTER RESPONSE
Figure 3. Figure 4.
17MHz FILTER RESPONSE OUTPUT-REFERRED NOISE vs V
CNTL
Figure 5. Figure 6.
OUTPUT-REFERRED NOISE vs V
CNTL
OUTPUT-REFERRED NOISE vs V
CNTL
Figure 7. Figure 8.
14 Copyright © 2008–2011, Texas Instruments Incorporated