VCA2615 Datasheet, PDF (12/29 Pages) Texas Instruments – Dual, Low-Noise Variable-Gain Amplifier with Preamp

VCA2615
SBOS316C − JULY 2005 − REVISED SEPTEMBER 2005
www.ti.com
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.
DISTORTION vs V_CNTL
(VGA Only, SE In/Diff Out, Hi Gain)
−30
−35
2nd−Harmonic
−40
−45
−50
−55
−60
3rd−Harmonic
−65
−70
V_CNTL (V)
Figure 37
−30
−35
−40
−45
−50
−55
−60
−65
−70
−75
−80
50
DISTORTION vs OUTPUT LOAD RESISTANCE
2nd−Harmonic
3rd−Harmonic
150 250 350 450 550 650 750 850 950 1050
R_LOAD(Ω)
Figure 38
CROSSTALK vs V_CNTL
(Lo VGA Gain)
−60
−62
LNP 00
LNP 01
−64
LNP 10
−66
LNP 11
−68
−70
−72
−74
−76
−78
−80
V_CNTL (V)
Figure 39
CROSSTALK vs V_CNTL
(V_OUT = 2V_PP, Hi−Gain)
−50
−54
−58
−62
10MHz
−66
5MHz
−70
−74
2MHz
−78
−82
−86
1MHz
−90
V_CNTL (V)
Figure 41
CROSSTALK vs V_CNTL
(Hi VGA Gain)
−60
−62
LNP 00
LNP 01
−64
LNP 10
−66
LNP 11
−68
−70
−72
−74
−76
−78
−80
V_CNTL (V)
Figure 40
TOTAL POWER vs TEMPERATURE
314
313
312
311
310
309
308
307
306
305
304
303
Temperature (_ C)
Figure 42
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