TAS3002 datasheet(22/74 Pages) TI

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3–2

AOUTR

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 Vrms, the output level can be increased by

using an external amplifier. The circuit shown in Figure 3–3 boosts the output level to 1 Vrms (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

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

C4 = C5

Figure 3–3. Analog Output With External Amplifier

TAS3002 Datasheet(PDF) 22 Page - Texas Instruments

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