VCA2615 Datasheet, PDF (13/29 Pages) Texas Instruments – Dual, Low-Noise Variable-Gain Amplifier with Preamp

VCA2615
www.ti.com
SBOS316C − JULY 2005 − REVISED SEPTEMBER 2005
TYPICAL CHARACTERISTICS (continued)
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.
LNP POWER vs TEMPERATURE
239
238
237
236
235
234
233
Temperature (_ C)
Figure 43
VGA POWER vs TEMPERATURE
96.0
95.5
95.0
94.5
94.0
Temperature (_ C)
Figure 44
−60
−59
−58
−57
−56
−55
−54
−53
−52
−30
−31
−32
−33
−34
−35
−36
−37
−38
−39
−40
−41
−42
−43
−44
−45
−46
0.25
DISTORTION vs TEMPERATURE
2nd−Harmonic
3rd−Harmonic
Temperature (_ C)
Figure 45
OVERLOAD DISTORTION
2nd−HARMONIC
0.50
0.75
1.00
V_IN (V)
Figure 47
GAIN vs V_CNTL vs TEMPERATURE
50
45
40
+25_ C
35
30
25
−40_ C
20
15
+85_ C
10
5
0
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
V_CNTL (V)
Figure 46
V_OUT vs V_CLAMP
(100mV_PP, S/E Input)
5.2
4.8
4.4
4.0
3.6
H/L = 0
3.2
2.8
2.4
2.0
1.6
1.2
H/L = 1
0.8
0.4
0
V_CLAMP (V)
Figure 48
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