digital audio applications which achieve 96kHz sam-
pling rates with 24-bit audio data, such as High Defi-
nition Compatible Digital (HDCD) CD players, DVD
players, mini-disc players and AV receivers.
PCM1732 uses a newly-developed “enhanced, multi-
level delta-sigma modulator” architecture that im-
proves audio dynamic performance and reduces jitter
sensitivity.
The internal digital filter operates at 8x oversampling
at a 96kHz sampling rate, with –120dB stopband
attenuation.
q
q
V
CC2
L
q
V
CC2
R
AGND2R
AGND2L
PCM1732
HDCD
Amplitude
Decoding
HDCD
Hidden
Code
Recovery
q
q
DAC
HDCD
8x
Oversampling
Digital Filter
Enhanced
Multi-Level
∆Σ
Modulator
DAC
Low-Pass
Filter
V
OUT
L
EXTL
Low-Pass
Filter
V
OUT
R
EXTR
ZERO
NOTE: An HDCD license from Pacific Microsonics, Inc. is
required to purchase the PCM1732.
CS/IWO
MODE
MUTE
RST
BPZ Control
SCK
Power-On Reset
Open
Drain
HDCD
®
is a registered trademark of Pacific Microsonics, Inc.
HDCD
®
technology is provided under license from Pacific Microsonics
Inc. The PCM1732’s design is covered by the following patents:
In the USA: 45,479,168, 5,638,074, 5,640,161, 5,808,574, 5,838,274
5,854,600, 5,864,311, 5,872,531.
In Australia: 669,114.
Other patents pending.
Crystal/OSC
Power Supply
XTI
XTO
CLKO
V
CC1
AGND1
V
DD
DGND
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
NOTES: (1) Refer to the System Clock section of this data sheet. (2) An external buffer is recommended. (3) Dynamic performance specifications are tested with 20kHz low-pass
filter and THD+N specifications are tested with 30kHz LPF, 400Hz HPF, Average Mode. (4) Dynamic performance specifications are tested with HDCD gain scaling set to analog
gain scaling. (5) SNR is tested with infinite zero detection off. (6) Output level is for sine wave. DAC outputs 0.64 V
CC
(peak-to-peak) due to filter response as transient.
®
PCM1732
2
SPECIFICATIONS
16-Bit Data Performance
All specifications at +25°C, +V
DD
= +V
CC
= +5V, f
S
= 44.1kHz, and SYSCLK = 384f
S
, unless otherwise noted. For discussion of HDCD scaling options, see the
Applications Considerations section of this data sheet.
PCM1732U
PARAMETER
DYNAMIC ANALOG PERFORMANCE,
STANDARD CD, ANALOG HDCD SCALING
(1)
Total Harmonic Distortion + Noise
V
O
= 0dB
V
O
= –60dB
Dynamic Range
Output Voltage, Sine Wave
DYNAMIC ANALOG PERFORMANCE,
HDCD CD, ANALOG HDCD SCALING
(3)
Total Harmonic Distortion + Noise
V
O
= 0dB
V
O
= –60dB
Dynamic Range
Output Voltage, Sine Wave
CONDITIONS
MIN
TYP
MAX
UNITS
0dBFS
EIAJ A-Weighted
0dBFS
(2)
–95
–37
99
0.57V
CC
dB
dB
dB
Vp-p
0dBFS
EIAJ A-Weighted
(4)
0dBFS, Without Peak Extend
(2)
0dBFS, With Peak Extend
(5)
+6dBFS
(5, 6)
–94
–38
104
0.57V
CC
0.285V
CC
0.57V
CC
dB
dB
dB
Vp-p
Vp-p
Vp-p
DYNAMIC ANALOG PERFORMANCE,
Standard CD, Digital HDCD SCALING
(1)
Total Harmonic Distortion + Noise
V
O
= 0dB
V
O
= –60dB
Dynamic Range
Output Voltage, Sine Wave
DYNAMIC ANALOG PERFORMANCE
HDCD CD, Digital HDCD SCALING
(2)
Total Harmonic Distortion + Noise
V
O
= 0dB
V
O
= –60dB
Dynamic Range
Output Voltage, Sine Wave
0dBFS
EIAJ A-Weighted
0dBFS
–92
–33
96
0.285V
CC
dB
dB
dB
Vp-p
0dBFS
EIAJ A-Weighted
(4)
0dBFS
+6dBFS
(5)
–91
–34
104
0.285V
CC
0.57V
CC
dB
dB
dB
Vp-p
Vp-p
NOTES: (1) Without dither. (2) Gain pin is LOW. (3) With the rectangular PDF dither. (4) Including Peak Extend to +6dBFS. (5) Gain pin is HIGH. (6) +6dBFS is
the full Peak Extend, while dynamic range numbers are with Peak Extend.
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.
®
3
PCM1732
PIN CONFIGURATION
Top View
SO-28
PIN ASSIGNMENTS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
NAME
LRCIN
DIN
BCKIN
CLKO
XTI
XTO
DGND
V
DD
HDCD
V
CC
2R
AGND2R
EXTR
V
OUT
R
AGND1
V
CC
1
V
OUT
L
EXTL
AGND2L
V
CC
2L
GAIN
ZERO
RST
CS/IW0
I/O
IN
IN
IN
OUT
IN
OUT
—
—
OUT
—
—
—
OUT
—
—
OUT
—
OUT
—
OUT
OUT
IN
IN
DESCRIPTION
Left and Right Clock Input. This clock is equal to
the sampling rate, f
S
.
(1)
Serial Audio Data Input
(1)
Bit Clock Input for Serial Audio Data
(1)
Buffered System Clock Output.
Oscillator Input/External Clock Input
(2)
Oscillator Output
Digital Ground
Digital Power +5V
HDCD Encoded Data Detect
Analog Power +5V, Rch
Analog Ground, Rch
Common Mode Voltage for Analog Output Amp,
Rch
Analog Voltage Output, Rch
Analog Ground
Analog Power +5V
Analog Voltage Output, Lch
Common Mode Voltage for Analog Output Amp,
Lch
Analog Ground, Lch
Analog Power +5V, Lch
External (analog) Gain Scaling
Zero Data Flag
Reset. When this pin is LOW, the digital filter
and modulators are held in reset.
(3)
Chip Select/Input Format Selection. When this
pin is LOW, the Mode Control interface is en-
abled.
(4)
Mode Control Select: H = Software; L =
Hardware
(3)
Mute Control
(3)
Mode Data/Sampling Rate Range Select
(3)
Mode Clock/De-Emphasis Select
(3)
Mode Latch/Input Format Select
(3)
LRCIN
DIN
BCKIN
CLKO
XTI
XTO
DGND
V
DD
HDCD
1
2
3
4
5
6
7
PCM1732U
8
9
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ML/I
2
S
MC/DEM
MD/FSS
MUTE
MODE
CS/IWO
RST
ZERO
GAIN
V
CC
2L
AGND2L
EXTL
V
OUT
L
V
CC
1
13
14
15
16
17
V
CC
2R 10
AGND2R 11
EXTR 12
V
OUT
R 13
AGND1 14
18
19
20
21
22
23
ABSOLUTE MAXIMUM RATINGS
24
Power Supply Voltage ...................................................................... +6.5V
Trigger input with pull-up resister. (4) Schmitt Trigger input with pull-down
resistor.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
(1)
217
SPECIFIED
TEMPERATURE
RANGE
–25°C to +70°C
PACKAGE
MARKING
PCM1732U
ORDERING
NUMBER
(2)
PCM1732U
PCM1732U/1K
TRANSPORT
MEDIA
Rails
Tape and Reel
PRODUCT
PCM1732U
PACKAGE
SO-28
"
"
"
"
"
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel). Ordering 1000 pieces of “PCM1732U/1K” will get a single
1000-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
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
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