Filter
Top Products
3−2
AOUTR
10 µF
24-Bit
DAC
AOUTL
VCOM
+
0.1 µF
AGND
Analog Output
(Adjust Capacitors for Desired
Low Frequency Response)
Figure 3−2. VCOM Decoupling Network
3.2.2 Analog Output With Gain
Because the maximum analog output from the TAS3002 device is 0.707 V
rms
, the output level can be increased by
using an external amplifier. The circuit shown in Figure 3−3 boosts the output level to 1 V
rms
(when it has a gain of
1.414) and provides improved signal-to-noise ratio (SNR). Since this circuit lowers the noise floor, THD + N is
improved also.
AOUTR
10 µF
Analog Output
(Adjust Capacitors for Desired
Low Frequency Response)
24-Bit
DAC
AOUTL
VCOM
+
0.1 µF
AGND
+
−
+5 Op Amp/2
+
−
+5 Op Amp/2
TLV2362
or Equilvalent
TLV2362
or Equilvalent
C1
C2
C3
C5C5
C4
C
1
= C
2
= C
3
C
4
= C
5
Figure 3−3. Analog Output With External Amplifier