TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, V
DDA
= V
DDB
= V
DDR
= +5V, load resistance = 500Ω on each output to ground, MGS = 011, LNP = 22dB and f
IN
= 5MHz, unless otherwise noted.
The input to the preamp (LNP) is single-ended, and the output from the VCA is single-ended, unless otherwise noted. This results in a 6dB reduction in signal
amplitude compared to differential operation.
–30
–35
–40
Distortion (dBc)
DISTORTION vs FREQUENCY
MGS = 111
2V
PP
DIFFERENTIAL
–30
–35
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
DISTORTION vs FREQUENCY
MGS = 000
1V
PP
SINGLE-ENDED
V
C
= 0.2, H2
V
C
= 0.2, H3
Distortion (dBc)
V
C
= 0.2, H3
V
C
= 0.2, H2
–45
–50
–55
–60
–65
–70
–75
–80
100k
V
C
= 3.0, H3
1M
V
C
= 3.0, H2
V
C
= 3.0, H2
V
C
= 3.0, H3
10M
100k
Frequency (Hz)
1M
Frequency (Hz)
10M
Distortion (dBc)
–65
–70
–75
–80
–85
–90
100k
V
C
= 3.0, H2
V
C
= 3.0, H3
Distortion (dBc)
–30
–35
–40
–45
–50
–55
–60
DISTORTION vs FREQUENCY
MGS = 011
1V
PP
SINGLE-ENDED
V
C
= 0.2, H3
V
C
= 0.2, H2
–30
–35
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
100k
DISTORTION vs FREQUENCY
MGS = 111
1V
PP
SINGLE-ENDED
V
C
= 0.2, H2
V
C
= 0.2, H3
V
C
= 3.0, H2
V
C
= 3.0, H3
1M
Frequency (Hz)
10M
1M
Frequency (Hz)
10M
DISTORTION vs VCA
CNTL
2V
PP
DIFFERENTIAL
–45
MGS = 111, H2
–50
DISTORTION vs VCA
CNTL
1V
PP
SINGLE-ENDED
–45
MGS = 111, H2
–50
Distortion (dBc)
Distortion (dBc)
–55
MGS = 011, H2
–60
–65
MGS = 000, H3
–70
MGS = 111, H3
–75
–80
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)
MGS = 011, H3
MGS = 000, H2
–55
MGS = 011, H2 MGS = 000, H2
–60
–65
–70
MGS = 111, H3
–75
–80
MGS = 000, H3
MGS = 011, H3
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)
VCA2616, VCA2611
SBOS234E
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7
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
