Datasheet

AD539
Rev. B | Page 8 of 20
2
–2
1
–1
0
05
FREQUENCY (MHz)
PHASE LINEARITY (Degrees)
09679-010
10
Figure 10. Phase Linearity Error in Minimal Configuration
5.0
–5.0
2.5
–2.5
0
–2 –1 10
f = 3.579MHz
V
X
= 0.1V
V
X
= 0.3V
V
X
= 1V
V
X
= 3V
2
SIGNAL INPUT BIAS VOLTAGE (V)
PHASE LINEARITY (Degrees)
09679-011
Figure 11. Differential Phase Linearity in Minimal Configuration for a Typical
Device
09679-012
100
90
10
0%
100µs
20mV
Figure 12. Control Feedthrough One Channel of Figure 22
0
9679-013
100
90
10
0%
100µs
20mV
Figure 13. Control Feedthrough Differential Mode of Figure 22
0.050
0.025
0
01 2
CONTROL VOLTAGE (V)
TOTAL HARMONIC DISTORTION (%)
09679-014
3
f = 10kHz
V
Y
= 1.5V rms
V
Y
= 0.5V rms
Figure 14. Distortion in Differential Mode Using LH0032 Op Amp
10
0
–10
–20
–30
–40
–50
–60
110
FREQUENCY (MHz)
RESPONSE (dB)
09679-015
100
V
X
= +3.162V
V
X
= +1.00V
V
X
= +0.316V
V
X
= +0.1V
V
X
= +0.032V
V
X
= +0.01V
V
X
= –0.01V
Figure 15. AC Response of the VCA at Different Gains, V
Y
= 0.5 V RMS