VCA2615 Datasheet, PDF (6/29 Pages) Texas Instruments – Dual, Low-Noise Variable-Gain Amplifier with Preamp

VCA2615
SBOS316C − JULY 2005 − REVISED SEPTEMBER 2005
www.ti.com
TYPICAL CHARACTERISTICS
All specifications at TA = +25°C, VDD = 5V, load resistance = 500Ω on each output to ground; the input to the preamp (LNP) is single-ended;
fIN = 5MHz, LNP Gain (G1, G2) = 10, H/L = 0, V_CNTL = 2.5V; VCA output is 1VPP differential; CA, CB = 3.9µF, unless otherwise noted.
GAIN vs V_CNTL
(Lo VGA Gain)
60
55
50
45
LNP 11
40
35
LNP 10
30
25
20
15
LNP 01
10
5
0
−5
LNP 00
−10
−15
−20
V_CNTL (V)
Figure 1
GAIN vs V_CNTL
(Hi VGA Gain)
65
60
55
50
LNP 11
45
40
LNP 10
35
30
25
20
LNP 01
15
10
5
0
LNP 00
−5
−10
−15
V_CNTL (V)
Figure 2
2.0
1.5
1.0
0.5
0
−0.5
−1.0
−1.5
−2.0
GAIN ERROR vs V_CNTL
(Lo VGA Gain)
LNP 00
LNP 01
LNP 10
LNP 11
V_CNTL (V)
Figure 3
2.0
1.5
1.0
0.5
0
−0.5
−1.0
−1.5
−2.0
GAIN ERROR vs V_CNTL
(Hi VGA Gain)
LNP 00
LNP 01
LNP 10
LNP 11
V_CNTL (V)
Figure 4
2.0
1.5
1.0
0.5
0
−0.5
−1.0
−1.5
−2.0
GAIN ERROR vs V_CNTL
1MHz
2MHz
5MHz
10MHz
V_CNTL (V)
Figure 5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
−1.2
−1.4
−1.6
−1.8
−2.0
GAIN ERROR vs V_CNTL vs TEMPERATURE
+85_C
+25_C
−40_ C
V_CNTL (V)
Figure 6
6