VCA2619 Datasheet, PDF (5/19 Pages) Burr-Brown (TI) – Dual, Variable Gain Amplifier with Input Buffer

VCA2619
www.ti.com
SBOS276A − AUGUST 2003 − REVISED AUGUST 2003
TYPICAL CHARACTERISTICS
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.
GAIN vs VCA
46
42
MGS = 111
38
MGS = 110
34
MGS = 101
30
26
22
18
MGS = 010
14
10
MGS = 011
6
2
MGS = 100
−2
−6
−10
−14
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)
GAIN ERROR vs VCA_CNTL
3.0
2.5
2.0
1.5
1.0
10MHz
0.5
0
−0.5
−1.0
−1.5
5MHz
1MHz
−2.0
−2.5
−3.0
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
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
VCA_CNTL (V)
GAIN MATCH: CHA to CHB, VCA_CNTL = 0.4V
45
40
35
30
25
20
15
10
5
0
GAIN ERROR vs TEMPERATURE
3.0
2.5
2.0
+85_C
1.5
1.0
+25_ C
0.5
0
−0.5
−1.0
−1.5
−2.0
−40_C
−2.5
−3.0
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
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
VCA_CNTL (V)
GAIN ERROR vs VCA_CNTL
3.0
2.5
2.0
1.5
MGS = 010
1.0
0.5
MGS = 100
0
−0.5
−1.0
−1.5
MGS = 111
−2.0
−2.5
−3.0
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
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
VCA_CNTL (V)
GAIN MATCH: CHA to CHB, VCA_CNTL = 2.9V
45
40
35
30
25
20
15
10
5
0
Delta Gain (dB)
Delta Gain (dB)
5