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_

+

4.7 k

Ω

4.7 k

Ω

OPA2134 1/2

+

10

µF

R1 = 3.3 kΩ

_

+

C(1)

R5 = 47 Ω

R3 = 1 kΩ

VIN−

_

+

R4 = 1 kΩ

R6 = 47 Ω

0.1

µF

+

R2 = 3.3 kΩ

OPA2134 1/2

VIN+

VCOM

0.01

µF

PCM1804

Analog In

OPA2134 1/2

S0059-01

C(1)

10

µF

_

+

_

+

VCOM

VREF

VIN+

VIN−

BGR

∆Σ Modulator

S0060-01

PCM1804

SLES022C – DECEMBER 2001 – REVISED OCTOBER 2007

(1)

A capacitor value of 1800 pF is recommended, unless an input signal greater than –6 dBFS at 100 kHz or higher is

applied in the DSD mode. In that case, 3300 pF is recommended.

Figure 44. Application Circuit for Single-Ended Input Circuit (PCM)

Figure 45. Equivalent Circuit of Internal Reference (VCOM, VREF)

30

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