49%
FPO
www.ti.com
DF1706
DF1
706
Stereo, 24-Bit, 192kHz
8x Oversampling Digital Interpolation Filter
FEATURES
q
COMPANION DIGITAL FILTER FOR THE
PCM1704 24-BIT AUDIO DAC
q
HIGH PERFORMANCE FILTER:
Stopband Attenuation: 鈥?15dB
Passband Ripple:
卤
0.00005dB
q
AUDIO INTERFACE:
Input Data Formats: Standard, Left-
Justified, and I
2
S
Input Word Length: 16, 20, or 24 Bits
Output Word Length: 16, 18, 20, or 24 Bits
Sampling Frequency: 32kHz to 192kHz
q
SYSTEM CLOCK: 128f
S
, 192f
S
, 256f
S
,
384f
S
, 512f
S
, 768f
S
q
ON-CHIP CRYSTAL OSCILLATOR
q
PROGRAMMABLE FUNCTIONS:
Hardware or Software Control Modes
Sharp or Slow Roll-Off Filter Response
Soft Mute
Digital De-Emphasis
Independent Left/Right Digital Attenuation
q
+3.3V SINGLE-SUPPLY OPERATION
q
SMALL SSOP-28 PACKAGE
DESCRIPTION
The DF1706 is a high performance, stereo, 8X
oversampling digital interpolation filter designed for
high-end consumer and professional audio applica-
tions. The DF1706 supports 24-bit, 192kHz operation
and features user-programmable functions, including
selectable filter response, de-emphasis, attenuation,
and input/output data formats.
The DF1706 is the ideal companion for Texas
Instruments鈥檚 PCM1704 24-bit audio Digital-to-Ana-
log (D/A) converter. This combination allows for the
construction of very high-performance audio systems
and components.
(OW0)
(OW1)
(IW0)
(IW1)
(I
2
S)
BCKIN
LRCIN
DIN
Serial
Input
I/F
BCKO
8X Oversampling
Digital Filter with
Function
Controller
WCKO
Output I/F
DOL
DOR
x4
MD/CKO
MC/LRIP
ML/RESV
MODE
(MUTE)
RST
(DEM)
Crystal/OSC
Power Supply
Mode
Control
I/F
SCK
(SF0) (SF1) (SRO)
XTI
XTO
CLKO
V
DD
DGND
Copyright 漏 2001, Texas Instruments Incorporated
SBAS182
Printed in U.S.A. January, 2001