Datasheet

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B0001-02
DAC
∆Σ
Audio
Interface
× 8
Digital
Filter
+
DAC
∆Σ
SPI
Port
× 8
Digital
Filter
+
V
COM
Clock Manager
Power Supply
LRCK
DATA
BCK
(FMT) MS
(AMIX) MC
(DEMP) MD
SCKI PD V
CC
V
HP
H
OUT
R
V
COM
H
OUT
L
AIN
Digital
Attenuator
Headphone
Amplifier
( ) : PCM1771
AGND HGND
TYPICAL PERFORMANCE CURVES
Digital Filter
Digital Filter (De-Emphasis Off)
f – Frequency [ f
S
]
−140
−120
−100
−80
−60
−40
−20
0
0 1 2 3 4
Amplitude – dB
G001
f – Frequency [ f
S
]
−0.05
−0.04
−0.03
−0.02
−0.01
0.00
0.01
0.02
0.03
0.04
0.05
0.0 0.1 0.2 0.3 0.4 0.5
Amplitude – dB
G002
PCM1770 , PCM1771
SLES011E – SEPTEMBER 2001 – REVISED MARCH 2007
FUNCTIONAL BLOCK DIAGRAM
All specifications at T
A
= 25°C, V
CC
= V
HP
2.4 V, f
S
= 44.1 kHz, system clock = 256 f
S
, 24-bit data, and R
L
= 16 Ω , unless
otherwise noted.
AMPLITUDE AMPLITUDE
vs vs
FREQUENCY FREQUENCY
Figure 1. Figure 2.
9
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