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24-Bit, 96kHz, Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
With HDCD
Decoder
49%
FPO
PCM1732
TM
FEATURES
q
ENHANCED MULTI-LEVEL
DAC
q
INPUT AUDIO DATA WORD: 16-, 20-, 24-Bit
q
SAMPLING FREQUENCY (f
s
): 16kHz - 96kHz
q
SYSTEM CLOCK: 256, 384, 512, 768f
S
q
HIGH PERFORMANCE:
THD+N: 96dB
Dynamic Range: 104dB
SNR: 104dB
q
AUDIO OUTPUT LEVEL: 0.57 x V
CC
(Vp-p)
q
8x OVERSAMPLING DIGITAL FILTER WITH
HDCD DECODER:
Stopband Attenuation: 120dB
Passband Ripple:
0.00001dB
HDCD Filter Optimized for 44.1kHz to 48kHz
and 88.2kHz to 96kHz
q
MULTI-FUNCTIONS:
Digital De-emphasis
Soft Mute
Digital Attenuation
Zero Detect
Digital Gain Scaling
Reversible Output Phase
q
+5V SINGLE-SUPPLY OPERATION
q
SMALL SO-28 PACKAGE
1999 Burr-Brown Corporation
PDS-1522B
Printed in U.S.A. August, 1999
For most current data sheet and other product
information, visit www.burr-brown.com
DESCRIPTION
The PCM1732 is designed for mid- to high-grade
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.
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 Internet: http://www.burr-brown.com/ Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
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.
Serial
Input
I/F
Mode
Control
I/F
HDCD
Hidden
Code
Recovery
HDCD
8x
Oversampling
Digital Filter
Enhanced
Multi-Level
Modulator
Crystal/OSC
XTI
SCK
XTO
CLKO
V
CC1
AGND1
V
DD
DGND
HDCD
Amplitude
Decoding
V
OUT
L
V
CC2
L
V
CC2
R
AGND2R
AGND2L
EXTL
PCM1732
Open
Drain
DAC
Low-Pass
Filter
Low-Pass
Filter
BPZ Control
V
OUT
R
EXTR
ZERO
DAC
ML/I
2
S
MC/DEM
MD/FSS
CS/IWO
MODE
MUTE
RST
LRCIN
DIN
BCKIN
Power Supply
Power-On Reset
NOTE: An HDCD license from Pacific Microsonics, Inc. is
required to purchase the PCM1732.
2
PCM1732
SPECIFICATIONS
24-Bit Data Performance
All specifications at +25
C, +V
CC
= +V
DD
= +5V, f
S
= 44.1kHz, and SYSCLK = 384f
S
, unless otherwise noted.
PCM1732
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RESOLUTION
24
Bits
DATA FORMAT
Audio Data Interface Format
Standard/I
2
S
Data Bit Length
16/20/24 Selectable
Audio Data Format
MSB-First, Binary Two's Complement
Sampling Frequency (f
S
)
16
96
kHz
System Clock Frequency
(1)
256/384/512/768f
S
System Clock Duty Cycle
40
60
%
DIGITAL INPUT/OUTPUT LOGIC LEVEL
Input Logic Level (except XTI): V
IH
2.0
V
V
IL
0.8
V
Output Logic Level (CLKO):
V
OH
I
OH
= 2mA
4.5
V
V
OL
I
OL
= 4mA
0.5
V
CLKO PERFORMANCE
(2)
Output Rise Time
20 ~ 80% V
DD
, 10pF
5.5
ns
Output Fall Time
80 ~ 20% V
DD
, 10pF
4
ns
Output Duty Cycle
10pF Load
30
%
DYNAMIC PERFORMANCE
(3, 4)
THD+N
V
O
= 0dB
f
S
= 44.1kHz
96
90
dB
f
S
= 96kHz
94
dB
V
O
= 60dB
f
S
= 44.1kHz
42
dB
Dynamic Range
f
S
= 44.1kHz, EIAJ A-weighted
98
104
dB
f
S
= 96kHz, A-weighted
103
dB
Signal-to-Noise Ratio
(5)
f
S
= 44.1kHz, EIAJ A-weighted
98
104
dB
f
S
= 96kHz, A-weighted
103
dB
Channel Separation
f
S
= 44.1kHz
96
104
dB
f
S
= 96kHz
101
dB
DC ACCURACY
Gain Error
1.0
3.0
% of FSR
Gain Mismatch Channel-to-Channel
1.0
3.0
% of FSR
Bipolar Zero Error
V
O
= 0.5V
CC
at Bipolar Zero
30
60
mV
ANALOG OUTPUT
Output Voltage
(6)
Full Scale (0dB)
0.57 V
CC
Vp-p
Center Voltage
0.5 V
CC
V
Load Impedance
AC Load
5
k
DIGITAL FILTER PERFORMANCE
Filter Characteristics 1
(f
S
= 44.1kHz/48kHz optimal)
Passband
0.002dB
0.471f
S
3dB
0.487f
S
Stopband
0.515f
S
Passband Ripple
< 0.453f
S
0.0001
dB
Stopband Attenuation
Stopband = 0.515f
S
109
dB
Stopband = 0.520f
S
123
dB
Delay Time
81/f
S
sec
Filter Characteristics 2
(f
S
= 88.2kHz/96kHz optimal)
Passband
0.005dB
0.395f
S
3dB
0.441f
S
Stopband
0.538f
S
Passband Ripple
< 0.341f
S
0.0001
dB
Stopband Attenuation
Stopband = 0.538f
S
132
dB
Delay Time
31/f
S
sec
De-Emphasis Error
0.1
dB
INTERNAL ANALOG FILTER
3dB Bandwidth
100
kHz
Passband Response
f = 20kHz
0.16
dB
POWER SUPPLY REQUIREMENTS
Voltage Range
V
DD,
V
CC
4.5
5
5.5
VDC
Supply Current: I
CC
+ I
DD
f
S
= 44.1kHz
85
105
mA
f
S
= 96kHz
93
mA
Power Dissipation
f
S
= 44.1kHz
425
525
mW
f
S
= 96kHz
465
mW
TEMPERATURE RANGE
Operating
25
+70
C
Storage
55
+100
C
Thermal Resistance,
JA
67
C/W
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.
3
PCM1732
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
CONDITIONS
MIN
TYP
MAX
UNITS
DYNAMIC ANALOG PERFORMANCE,
STANDARD CD, ANALOG HDCD SCALING
(1)
Total Harmonic Distortion + Noise
V
O
= 0dB
0dBFS
95
dB
V
O
= 60dB
37
dB
Dynamic Range
EIAJ A-Weighted
99
dB
Output Voltage, Sine Wave
0dBFS
(2)
0.57V
CC
Vp-p
DYNAMIC ANALOG PERFORMANCE,
HDCD CD, ANALOG HDCD SCALING
(3)
Total Harmonic Distortion + Noise
V
O
= 0dB
0dBFS
94
dB
V
O
= 60dB
38
dB
Dynamic Range
EIAJ A-Weighted
(4)
104
dB
Output Voltage, Sine Wave
0dBFS, Without Peak Extend
(2)
0.57V
CC
Vp-p
0dBFS, With Peak Extend
(5)
0.285V
CC
Vp-p
+6dBFS
(5, 6)
0.57V
CC
Vp-p
DYNAMIC ANALOG PERFORMANCE,
Standard CD, Digital HDCD SCALING
(1)
Total Harmonic Distortion + Noise
V
O
= 0dB
0dBFS
92
dB
V
O
= 60dB
33
dB
Dynamic Range
EIAJ A-Weighted
96
dB
Output Voltage, Sine Wave
0dBFS
0.285V
CC
Vp-p
DYNAMIC ANALOG PERFORMANCE
HDCD CD, Digital HDCD SCALING
(2)
Total Harmonic Distortion + Noise
V
O
= 0dB
0dBFS
91
dB
V
O
= 60dB
34
dB
Dynamic Range
EIAJ A-Weighted
(4)
104
dB
Output Voltage, Sine Wave
0dBFS
0.285V
CC
Vp-p
+6dBFS
(5)
0.57V
CC
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.
4
PCM1732
PIN
NAME
I/O
DESCRIPTION
1
LRCIN
IN
Left and Right Clock Input. This clock is equal to
the sampling rate, f
S
.
(1)
2
DIN
IN
Serial Audio Data Input
(1)
3
BCKIN
IN
Bit Clock Input for Serial Audio Data
(1)
4
CLKO
OUT
Buffered System Clock Output.
5
XTI
IN
Oscillator Input/External Clock Input
(2)
6
XTO
OUT
Oscillator Output
7
DGND
--
Digital Ground
8
V
DD
--
Digital Power +5V
9
HDCD
OUT
HDCD Encoded Data Detect
10
V
CC
2R
--
Analog Power +5V, Rch
11
AGND2R
--
Analog Ground, Rch
12
EXTR
--
Common Mode Voltage for Analog Output Amp,
Rch
13
V
OUT
R
OUT
Analog Voltage Output, Rch
14
AGND1
--
Analog Ground
15
V
CC
1
--
Analog Power +5V
16
V
OUT
L
OUT
Analog Voltage Output, Lch
17
EXTL
--
Common Mode Voltage for Analog Output Amp,
Lch
18
AGND2L
OUT
Analog Ground, Lch
19
V
CC
2L
--
Analog Power +5V, Lch
20
GAIN
OUT
External (analog) Gain Scaling
21
ZERO
OUT
Zero Data Flag
22
RST
IN
Reset. When this pin is LOW, the digital filter
and modulators are held in reset.
(3)
23
CS/IW0
IN
Chip Select/Input Format Selection. When this
pin is LOW, the Mode Control interface is en-
abled.
(4)
24
MODE
IN
Mode Control Select: H = Software; L =
Hardware
(3)
25
MUTE
IN
Mute Control
(3)
26
MD/FSS
IN
Mode Data/Sampling Rate Range Select
(3)
27
MC/DEM
IN
Mode Clock/De-Emphasis Select
(3)
28
ML/I
2
S
IN
Mode Latch/Input Format Select
(3)
NOTES: (1) Schmitt Trigger input. (2) CMOS logic level input. (3) Schmitt
Trigger input with pull-up resister. (4) Schmitt Trigger input with pull-down
resistor.
PIN ASSIGNMENTS
PIN CONFIGURATION
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.
Power Supply Voltage ...................................................................... +6.5V
+V
CC
to +V
DD
Difference ...................................................................
0.1V
Input Logic Voltage .................................................. 0.3V to (V
DD
+ 0.3V)
Input Current (except power supply) ...............................................
10mA
Power Dissipation .......................................................................... 750mW
Operating Temperature Range ......................................... 25
C to +70
C
Storage Temperature ...................................................... 55
C to +125
C
Lead Temperature (soldering, 5s) ................................................. +260
C
(reflow, 10s) .................................................... +235
C
ABSOLUTE MAXIMUM RATINGS
LRCIN
DIN
BCKIN
CLKO
XTI
XTO
DGND
V
DD
HDCD
V
CC
2R
AGND2R
EXTR
V
OUT
R
AGND1
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PCM1732U
Top View
SO-28
PACKAGE
SPECIFIED
DRAWING
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
NUMBER
(1)
RANGE
MARKING
NUMBER
(2)
MEDIA
PCM1732U
SO-28
217
25
C to +70
C
PCM1732U
PCM1732U
Rails
"
"
"
"
"
PCM1732U/1K
Tape and Reel
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.
PACKAGE/ORDERING INFORMATION
5
PCM1732
TYPICAL PERFORMANCE CURVES
All specifications at +25
C, +V
CC
= +V
DD
= +5V, f
S
= 44.1kHz, and 24-bit input data, SYSCLK = 384f
S
, unless otherwise noted.
108
107
106
105
104
103
102
101
100
99
98
DYNAMIC RANGE vs SUPPLY VOLTAGE
Power Supply Voltage (V)
4.25
4.50
4.75
5.00
5.25
5.50
5.75
Dynamic Range (dB)
f
S
= 44.1kHz, 24-Bit
f
S
= 44.1kHz, 16-Bit
HDCD with Peak Extend
86
88
90
92
94
96
98
100
102
THD+N vs SUPPLY VOLTAGE
Power Supply Voltage (V)
4.25
4.50
4.75
5.00
5.25
5.50
5.75
THD+N at 0dB (dB)
f
S
= 44.1kHz, 16-Bit
HDCD With Peak Extend
f
S
= 44.1kHz, 24-Bit
60
70
80
90
100
110
120
130
140
0
2
4
6
8
10
Frequency (kHz)
60dB AMPLITUDE vs FREQUENCY
24-Bit Data
Amplitude (dB)
12
14
16
18
20
60
70
80
90
100
110
120
130
140
60dB AMPLITUDE vs FREQUENCY
16-Bit Data
Frequency (kHz)
0
2
4
6
8
10
12
14
16
18
20
Amplitude (dB)
60
70
80
90
100
110
120
130
140
60dB AMPLITUDE vs FREQUENCY
HDCD Without Peak Extend
Frequency (kHz)
0
2
4
6
8
10
12
14
16
18
20
Amplitude (dB)
60
70
80
90
100
110
120
130
140
60dB AMPLITUDE vs FREQUENCY
HDCD With Peak Extend
Frequency (kHz)
0
2
4
6
8
10
12
14
16
18
20
Amplitude (dB)
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