PCM1792A
SLES105 - FEBRUARY 2004
24 BIT, 192 kHz SAMPLING, ADVANCED SEGMENT,
AUDIO STEREO DIGITAL TO ANALOG CONVERTER
FEATURES
D
24-Bit Resolution
D
Analog Performance:
- Dynamic Range:
- 132 dB (9 V rms, Mono)
- 129 dB (4.5 V rms, Stereo)
- 127 dB (2 V rms, Stereo)
- THD+N: 0.0004%
D
Differential Current Output: 7.8 mA p-p
D
8
Oversampling Digital Filter:
- Stop-Band Attenuation: 130 dB
- Pass-Band Ripple:
0.00001 dB
D
Sampling Frequency: 10 kHz to 200 kHz
D
System Clock: 128, 192, 256, 384, 512, or
768 f
S
With Autodetect
D
Accepts 16-, 20-, and 24-Bit Audio Data
D
PCM Data Formats: Standard, I
2
S, and
Left-Justified
D
DSD Format Interface Available
D
Optional Interface to External Digital Filter or
DSP Available
D
TDMCA or Serial Port (SPI/I
2
C)
D
User-Programmable Mode Controls:
- Digital Attenuation: 0 dB to 120 dB,
0.5 dB/Step
- Digital De-Emphasis
- Digital Filter Rolloff: Sharp or Slow
- Soft Mute
- Zero Flag for Each Output
D
Dual Supply Operation:
- 5-V Analog, 3.3-V Digital
D
5-V Tolerant Digital Inputs
D
Small 28-Lead SSOP Package, Lead-Free
Product
APPLICATIONS
D
A/V Receivers
D
SACD Player
D
DVD Players
D
HDTV Receivers
D
Car Audio Systems
D
Digital Multitrack Recorders
D
Other Applications Requiring 24-Bit Audio
DESCRIPTION
The PCM1792A is a monolithic CMOS integrated circuit
that includes stereo digital-to-analog converters and
support circuitry in a small 28-lead SSOP package. The
data converters use TI's advanced segment DAC
architecture to achieve excellent dynamic performance
and improved tolerance to clock jitter. The PCM1792A
provides balanced current outputs, allowing the user to
optimize analog performance externally. The PCM1792A
accepts PCM and DSD audio data formats, providing easy
interfacing to audio DSP and decoder chips. The
PCM1792A also interfaces with external digital filter
devices (DF1704, DF1706, PMD200). Sampling rates up
to 200 kHz are supported. A full set of user-programmable
functions is accessible through an SPI or I
2
C serial control
port, which supports register write and readback functions.
The PCM1792A also supports the time division
multiplexed command and audio (TDMCA) data format.
This integrated circuit can be damaged by ESD. Texas Instruments 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.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
Burr Brown Products
from Texas Instruments
Copyright
2004, Texas Instruments Incorporated
PCM1792A
SLES105 - FEBRUARY 2004
www.ti.com
2
ORDERING INFORMATION
PRODUCT
PACKAGE
PACKAGE CODE
OPERATION
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA
PCM1792ADB
28-lead SSOP
28DB
-25
C to 85
C
PCM1792A
PCM1792ADB
Tube
PCM1792ADB
28-lead SSOP
28DB
-25
C to 85
C
PCM1792A
PCM1792ADBR
Tape and reel
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
PCM1792A
Supply voltage
VCC1, VCC2L, VCC2R
-0.3 V to 6.5 V
Supply voltage
VDD
-0.3 V to 4 V
Supply voltage differences: VCC1, VCC2L and VCC2R
0.1 V
Ground voltage differences: AGND1, AGND2, AGND3L, AGND3R, and DGND
0.1 V
Digital input
LRCK, DATA, BCK, SCK, MSEL, RST, MS(2), MDI, MC, MDO(2), ZEROL(2), ZEROR(2)
0.3 V to 6.5 V
Digital input
voltage
ZEROL(3), ZEROR(3), MDO(3), MS(3)
0.3 V to (VDD + 0.3 V) < 4 V
Analog input voltage
0.3 V to (VCC + 0.3 V) < 6.5 V
Input current (any pins except supplies)
10 mA
Ambient temperature under bias
40
C to 125
C
Storage temperature
55
C to 150
C
Junction temperature
150
C
Lead temperature (soldering)
260
C, 5 s
Package temperature (IR reflow, peak)
250
C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Input mode or I2C mode.
(3) Output mode except for I2C mode.
ELECTRICAL CHARACTERISTICS
all specifications at TA = 25
C, VCC1 = VCC2L = VCC2R = 5 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted
PARAMETER
TEST CONDITIONS
PCM1792ADB
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RESOLUTION
24
Bits
DATA FORMAT (PCM Mode)
Audio data interface format
Standard, I2S, left justified
Audio data bit length
16-, 20-, 24-bit selectable
Audio data format
MSB first, 2s complement
fS
Sampling frequency
10
200
kHz
System clock frequency
128, 192, 256, 384, 512, 768 fS
DATA FORMAT (DSD Mode)
Audio data interface format
DSD (direct stream digital)
Audio data bit length
1 Bit
fS
Sampling frequency
2.8224
MHz
System clock frequency
2.8224
11.2896
MHz
DIGITAL INPUT/OUTPUT
Logic family
TTL compatible
VIH
Input logic level
2
Vdc
VIL
Input logic level
0.8
Vdc
IIH
Input logic current
VIN = VDD
10
A
IIL
Input logic current
VIN = 0 V
10
A
VOH
Output logic level
IOH = -2 mA
2.4
Vdc
VOL
Output logic level
IOL = 2 mA
0.4
Vdc
PCM1792A
SLES105 - FEBRUARY 2004
www.ti.com
3
ELECTRICAL CHARACTERISTICS (Continued)
all specifications at TA = 25
C, VCC1 = VCC2L = VCC2R = 5 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted
PARAMETER
TEST CONDITIONS
PCM1792ADB
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DYNAMIC PERFORMANCE (PCM MODE, 2-V RMS OUTPUT) (1)(2)
fS = 44.1 kHz
0.0004%
0.0008%
THD+N at VOUT = 0 dB
fS = 96 kHz
0.0008%
THD+N at VOUT = 0 dB
fS = 192 kHz
0.0015%
EIAJ, A-weighted, fS = 44.1 kHz
123
127
Dynamic range
EIAJ, A-weighted, fS = 96 kHz
127
dB
Dynamic range
EIAJ, A-weighted, fS = 192 kHz
127
dB
EIAJ, A-weighted, fS = 44.1 kHz
123
127
Signal-to-noise ratio
EIAJ, A-weighted, fS = 96 kHz
127
dB
Signal-to-noise ratio
EIAJ, A-weighted, fS = 192 kHz
127
dB
fS = 44.1 kHz
120
123
Channel separation
fS = 96 kHz
122
dB
Channel separation
fS = 192 kHz
120
dB
Level Linearity Error
VOUT = -120 dB
1
dB
DYNAMIC PERFORMANCE (PCM Mode, 4.5-V RMS Output) (1)(3)
fS = 44.1 kHz
0.0004%
THD+N at VOUT = 0 dB
fS = 96 kHz
0.0008%
THD+N at VOUT = 0 dB
fS = 192 kHz
0.0015%
EIAJ, A-weighted, fS = 44.1 kHz
129
Dynamic range
EIAJ, A-weighted, fS = 96 kHz
129
dB
Dynamic range
EIAJ, A-weighted, fS = 192 kHz
129
dB
EIAJ, A-weighted, fS = 44.1 kHz
129
Signal-to-noise ratio
EIAJ, A-weighted, fS = 96 kHz
129
dB
Signal-to-noise ratio
EIAJ, A-weighted, fS = 192 kHz
129
dB
fS = 44.1 kHz
124
Channel separation
fS = 96 kHz
123
dB
Channel separation
fS = 192 kHz
121
dB
DYNAMIC PERFORMANCE (MONO MODE) (1)(3)
fS = 44.1 kHz
0.0004%
THD+N at VOUT = 0 dB
fS = 96 kHz
0.0008%
THD+N at VOUT = 0 dB
fS = 192 kHz
0.0015%
EIAJ, A-weighted, fS = 44.1 kHz
132
Dynamic range
EIAJ, A-weighted, fS = 96 kHz
132
dB
Dynamic range
EIAJ, A-weighted, fS = 192 kHz
132
dB
EIAJ, A-weighted, fS = 44.1 kHz
132
Signal-to-noise ratio
EIAJ, A-weighted, fS = 96 kHz
132
dB
Signal-to-noise ratio
EIAJ, A-weighted, fS = 192 kHz
132
dB
(1) Filter condition:
THD+N: 20-Hz HPF, 20-kHz apogee LPF
Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Channel separation: 20-Hz HPF, 20-kHz AES17 LPF
Analog performance specifications are measured using the System Two
t
Cascade audio measurement system by Audio Precision
in the
averaging mode.
(2) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 36.
(3) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 37.
Audio Precision and System Two are trademarks of Audio Precision, Inc.
Other trademarks are the property of their respective owners.
PCM1792A
SLES105 - FEBRUARY 2004
www.ti.com
4
ELECTRICAL CHARACTERISTICS (Continued)
all specifications at TA = 25
C, VCC1 = VCC2L = VCC2R = 5 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted
PARAMETER
TEST CONDITIONS
PCM1792ADB
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DSD MODE DYNAMIC PERFORMANCE (1) (2) (44.1 KHZ, 64 FS)
THD+N at FS
4.5 V rms
0.0005%
Dynamic range
60 dB, EIAJ, A-weighted
128
dB
Signal-to-noise ratio
EIAJ, A-weighted
128
dB
ANALOG OUTPUT
Gain error
6
2
6
% of FSR
Gain mismatch, channel-to-channel
3
0.5
3
% of FSR
Bipolar zero error
At BPZ
2
0.5
2
% of FSR
Output current
Full scale (0 dB)
7.8
mA p-p
Center current
At BPZ
6.2
mA
DIGITAL FILTER PERFORMANCE
De-emphasis error
0.004
dB
FILTER CHARACTERISTICS1: SHARP ROLLOFF
Pass band
0.00001 dB
0.454 fS
Pass band
3 dB
0.49 fS
Stop band
0.546 fS
Pass-band ripple
0.00001
dB
Stop-band attenuation
Stop band = 0.546 fS
130
dB
Delay time
55/fS
s
FILTER CHARACTERISTICS2: SLOW ROLLOFF
Pass band
0.04 dB
0.254 fS
Pass band
3 dB
0.46 fS
Stop band
0.732 fS
Pass-band ripple
0.001
dB
Stop-band attenuation
Stop band = 0.732 fS
100
dB
Delay time
18/fS
s
(1) Filter condition:
THD+N: 20-Hz HPF, 20-kHz apogee LPF
Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted
Channel separation: 20-Hz HPF, 20-kHz AES17 LPF
Analog performance specifications are measured using the System Two Cascade audio measurement system by Audio Precision in the averaging
mode.
(2) Dynamic performance and dc accuracy are specified at the output of the postamplifier as shown in Figure 38.
PCM1792A
SLES105 - FEBRUARY 2004
www.ti.com
5
ELECTRICAL CHARACTERISTICS (Continued)
all specifications at TA = 25
C, VCC1 = VCC2L = VCC2R = 5 V, fS = 44.1 kHz, system clock = 256 fS, and 24-bit data unless otherwise noted
PARAMETER
TEST CONDITIONS
PCM1792ADB
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER SUPPLY REQUIREMENTS
VDD
3
3.3
3.6
Vdc
VCC1
Voltage range
VCC2L
Voltage range
4.75
5
5.25
Vdc
VCC2R
(1)
fS = 44.1 kHz
12
15
IDD
Supply current (1)
fS = 96 kHz
23
mA
IDD
Supply current (1)
fS = 192 kHz
45
mA
(1)
fS = 44.1 kHz
33
40
ICC
Supply current (1)
fS = 96 kHz
35
mA
ICC
Supply current (1)
fS = 192 kHz
37
mA
(1)
fS = 44.1 kHz
205
250
Power dissipation (1)
fS = 96 kHz
250
mW
Power dissipation (1)
fS = 192 kHz
335
mW
TEMPERATURE RANGE
Operation temperature
25
85
C
JA
Thermal resistance
28-pin SSOP
100
C/W
(1) Input is BPZ data.
PIN ASSIGNMENTS
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
ZEROL
ZEROR
MSEL
LRCK
DATA
BCK
SCK
DGND
V
DD
MS
MDI
MC
MDO
RST
V
CC
2L
AGND3L
I
OUT
L-
I
OUT
L+
AGND2
V
CC
1
V
COM
L
V
COM
R
I
REF
AGND1
I
OUT
R-
I
OUT
R+
AGND3R
V
CC
2R
PCM1792A
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