DF1706.pdf

(279 KB) Pobierz
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: –115dB
Passband Ripple:
±
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’s 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 © 2001, Texas Instruments Incorporated
SBAS182
Printed in U.S.A. January, 2001
SPECIFICATIONS
All specifications at T
A
= +25°C, V
DD
= 3.3V, f
S
= 44.1kHz, system clock = 256f
S
/384f
S
, 16-bit data, unless otherwise noted.
DF1706E
PARAMETER
RESOLUTION
INPUT DATA FORMAT
Audio Data Interface Format
Audio Data Bit Length
Audio Data Format
Sampling Frequency
System Clock Frequency
(1)
OUTPUT DATA FORMAT
Audio Data Interface Format
Audio Data Bit Length
Audio Data Format
DIGITAL INPUT/OUTPUT
Input Logic Level: V
IH
V
IL
Output Logic Level: V
OH
V
OL
CLKO AC
Rise Time
Fall Time
Duty Cycle
(2)
CHARACTERISTICS
(2)
t
R
t
F
20% to 80% V
DD
, 20pF
80% to 20% V
DD
, 20pF
20pF Load
4
3
50
ns
ns
%
CONDITIONS
MIN
TYP
24
Standard , Left-Justified , I
2
S
16, 20, 24 Selectable
MSB First, Binary Two’s Complement
32
192
128/192/256/384/512/768
Right-Justified
16, 20, 24 Selectable
MSB First, Binary Two’s Complement
CMOS Compatible
0.7V
DD
0.3V
DD
I
OH
= 2mA
I
OL
= 4mA
2.4
1.0
V
V
V
V
MAX
UNITS
Bits
f
S
kHz
f
S
DIGITAL FILTER PERFORMANCE
Filter Characteristics 1 (Sharp Roll-Off)
Passband
Stopband
Passband Ripple
Stopband Attenuation
Filter Characteristics 2 (Slow Roll-Off)
Passband Ripple
Stopband
Passband Ripple
Stopband Attenuation
Delay Time
De-Emphasis Error
POWER-SUPPLY REQUIREMENTS
Voltage Range
Supply Current
Power Dissipation
TEMPERATURE RANGE
Operation
Storage
Thermal Resistance,
θ
JA
NOTES: (1) Refer to Table I. (2) Crystal resonator used.
±0.00005dB
–3dB
0.546
0.454
0.493
±0.00005
Stopband = 0.546f
S
±0.0001dB
–3dB
–115
0.254
0.460
0.732
±0.0001
f
S
f
S
f
S
dB
dB
f
S
f
S
f
S
dB
dB
sec
dB
VDC
mA
mW
°C
°C
°C
Stopband = 0.748f
S
–100
45.125/f
S
±0.004
3.6
45
149
+85
+125
100
I
DD
V
DD
V
DD
= 3.3V
V
DD
= 3.3V
3.0
3.3
30
99
–25
–55
SSOP-28
2
DF1706
SBAS182
PIN CONFIGURATION
Top View
SSOP
PIN ASSIGNMENTS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
NAME
D
IN
BCKIN
I
2
S
IW0
IW1
XTI
XTO
DGND
CLKO
MODE
MD/CKO
MC/LRIP
ML/RESV
RST
MUTE
DEM
SF0
SF1
OW0
OW1
x4
V
DD
DOR
DOL
WCKO
BCKO
SRO
LRCIN
I/O
IN
IN
IN
IN
IN
IN
OUT
—
OUT
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
—
OUT
OUT
OUT
OUT
IN
IN
DESCRIPTION
Serial Audio Data Input
(1)
Bit Clock Input for Serial Audio Data
(1)
Input Audio Data Format Select
(2, 4)
Input Audio Data Word Select
(2, 4)
Input Audio Data Word Select
(2, 4)
Oscillator Input /External Clock Input
Oscillator Output
Digital Ground
Buffered System Clock Output
Mode Control Select (HIGH: Software Mode,
LOW: Hardware Mode)
(3)
Mode Control, Data/Half External Clock Fre-
quency Select
(3, 5)
Mode Control, Clock/Polarity of LRCIN Select
(3, 5)
Mode Control, Latch Clock/Reserve
(3, 5)
Reset, Active LOW. When this pin is LOW the
DF and modulators are held in reset.
(3)
Mute Control, Active LOW
(4)
De-Emphasis Control
(2, 4)
Sampling Rate Select for De-emphasis
(2, 4)
Sampling Rate Select for De-emphasis
(2, 4)
Output Audio Data Word Select
(2, 4)
Output Audio Data Word Select
(2, 4)
Oversampling Ratio Control. When this pin is
set HIGH, the ratio is 4 times.
Digital Power, +3.3V
R-Channel, Serial Audio Data Output
L-Channel, Serial Audio Data Output
Word Clock Output for Serial Audio Data Output
Bit Clock Output for Serial Audio Data Output
Filter Response Select
(2, 4)
L/R Clock Input (f
S
)
(1)
D
IN
BCKIN
I
2
S
IW0
IW1
XTI
XTO
DGND
CLKO
1
2
3
4
5
6
7
8
9
DF1706E
28
27
26
25
24
23
22
21
20
19
18
17
16
15
LRCIN
SRO
BCKO
WCKO
DOL
DOR
V
DD
x4
OW1
OW0
SF1
SF0
DEM
MUTE
MODE 10
MD/CKO 11
MC/LRIP 12
ML/RSV 13
RST 14
NOTES: (1) Pins 1, 2, 28—Schmitt-Trigger input without pull-up and -down
resistor. (2) Pins 3-5, 16-21, 27—Schmitt-Trigger input without pull-up and
-down resistor. (3) Pins 10-15—Schmitt-Trigger input without pull-up and
-down resistor. (4) Pins 3-5, 15-20, 27—these pins are invalid when MODE
(pin 10) is HIGH. (5) Pins 11-13—these pins have different functions corre-
sponding to MODE (pin 10) HIGH/LOW.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .................................................................................. +4.0V
Digital Input Voltage .............................................................. –0.2V to 4.5V
Input Current (any pins except supplies) ........................................
±10mA
Operating Temperature Range ......................................... –25°C to +85°C
Ambient Storage Temperature ....................................... –40°C to +125°C
Junction Temperature ................................................................... +150°C
Lead Temperature (soldering, 5s) ................................................. +260°C
Package Temperature (IR reflow, Peak, 10s) ................................ +235°C
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
324
SPECIFIED
TEMPERATURE
RANGE
–25°C to +85°C
PACKAGE
MARKING
DF1706E
ORDERING
NUMBER
(1)
DF1706E
DF1706E/2K
TRANSPORT
MEDIA
Rails
Tape and Reel
PRODUCT
DF1706E
PACKAGE
SSOP-28
"
"
"
"
"
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces
of “DF1706E/2K” will get a single 2000-piece Tape and Reel.
DF1706
SBAS182
3
TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, V
DD
=
±3.3V,
f
S
= 44.1kHz, System Clock = 256f
S
/384f
S
, 16-bit data, unless otherwise noted.
DIGITAL FILTER (DE-EMPHASIS OFF, f
S
= 44.1kHz)
FREQUENCY RESPONSE (Sharp Roll-Off)
20
0
–20
Attenuation (dB)
0.00010
0.00008
0.00006
Attenuation (dB)
PASSBAND RIPPLE (Sharp Roll-Off)
–40
–60
–80
–100
–120
–140
–160
–180
–200
0
1
2
Frequency (f
S
)
3
4
0.00004
0.00002
0
–0.00002
–0.00004
–0.00006
–0.00008
–0.00010
0
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Frequency (f
S
)
FREQUENCY RESPONSE (Slow Roll Off)
0
–20
–40
Attenuation (dB)
0
TRANSITION CHARACTERISTIC (Slow Roll Off)
Attenuation (dB)
–60
–80
–100
–120
–140
–160
–180
–200
0
1
2
Frequency (f
S
)
3
4
–5
–10
–15
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Frequency (f
S
)
DE-EMPHASIS AND DE-EMPHASIS ERROR
0
DE-EMPHASIS (f
S
= 32kHz)
0.010
0.008
DE-EMPHASIS ERROR (f
S
= 32kHz)
–2
0.006
0.004
Level (dB)
–4
Error (dB)
0.002
0
–0.002
–0.004
–6
–8
–0.006
–0.008
–10
0
2
4
6
8
10
12
14
Frequency (kHz)
–0.010
0
2
4
6
8
10
12
14
Frequency (kHz)
4
DF1706
SBAS182
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25°C, V
DD
=
±3.3V,
f
S
= 44.1kHz, System Clock = 256f
S
/384f
S
, 16-bit data, unless otherwise noted.
0
DE-EMPHASIS (f
S
= 44.1kHz)
0.010
0.008
DE-EMPHASIS ERROR (f
S
= 44.1kHz)
–2
0.006
0.004
Level (dB)
Error (dB)
–4
0.002
0
–0.002
–0.004
–6
–8
–0.006
–0.008
–10
0
2
4
6
8
10
12
14
16
18
20
Frequency (kHz)
–0.010
0
2
4
6
8
10
12
14
16
18
20
Frequency (kHz)
0
DE-EMPHASIS (f
S
= 48kHz)
0.010
0.008
DE-EMPHASIS ERROR (f
S
= 48kHz)
–2
0.006
0.004
Level (dB)
Error (dB)
–4
0.002
0
–0.002
–0.004
–6
–8
–0.006
–0.008
–10
0
2
4
6
8
10
12
14
16
18
20
22
Frequency (kHz)
–0.010
0
2
4
6
8
10
12
14
16
18
20
22
Frequency (kHz)
DF1706
SBAS182
5

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin