VCA2619 Datasheet, PDF (6/19 Pages) Burr-Brown (TI) – Dual, Variable Gain Amplifier with Input Buffer

VCA2619
SBOS276A − AUGUST 2003 − REVISED AUGUST 2003
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At TA = 25°C and VDD = 5V, load resistance = 500Ω on each output to ground, differential output (2VPP) MGS = 111, and fIN = 5MHz, unless
otherwise noted.
50
45
40
35
30
25
20
15
10
5
0
100k
GAIN vs FREQUENCY
(VCA_CNTL = 2.9V)
MGS = 100
MGS = 111
MGS = 010
1M
10M
Frequency (MHz)
100M
1100
1000
900
800
OUTPUT REFERRED NOISE vs VCA_CNTL
R_S= 50Ω
MGS = 111
700
600
500
400
MGS = 100
300
200
100
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
VCA_CNTL (V)
INPUT REFERRED NOISE vs R_S
100
10
1
1
10
100
1k
R_S (Ω )
50
40
30
20
10
0
−10
−20
100k
GAIN vs FREQUENCY
(MGS = 111)
VCA_CNTL = 2.9V
VCA_CNTL = 1.9V
VCA_CNTL = 0.9V
1M
10M
Frequency (MHz)
100M
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
INPUT REFERRED NOISE vs VCA_CNTL
R_S= 50Ω
MGS = 111
MGS = 100
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
VCA_CNTL (V)
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
10
NOISE FIGURE vs R_S
100
1k
R_S (Ω)
6