digital-to-analog converter (DAC), operating off of a
256f
S
or 384f
S
system clock. The DAC contains a 3rd-
order
∆Σ
modulator, a digital interpolation filter, and
an analog output amplifier. The PCM1733 accepts
18-bit input data in either normal or I
2
S formats.
The digital filter performs an 8X interpolation function
and includes de-emphasis at 44.1kHz. The PCM1733
can accept digital audio sampling frequencies from
16kHz to 96kHz, always at 8X oversampling.
The PCM1733 is ideal for low-cost, CD-quality con-
sumer audio applications.
BCKIN
LRCIN
DIN
Serial
Input
I/F
8X Oversampling
Digital Filter
Multi-level
Delta-Sigma
Modulator
DAC
Low-pass
Filter
V
OUT
L
CAP
Multi-level
Delta-Sigma
Modulator
Low-pass
Filter
V
OUT
R
DAC
FORMAT
Mode
Control
I/F
Power Supply
DM
256f
S
/384f
S
SCKI
V
CC
GND
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
NOTES: (1) Pins 1, 2, 3, 12, 13, 14: LRCIN, DIN, BCKIN, DM, FORMAT, SCKI. (2) Dynamic performance specs are tested with 20kHz low pass filter and THD+N
specs are tested with 30kHz LPF, 400Hz HPF, Average-Mode.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
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