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PCM4202DB Schematic ( PDF Datasheet ) - Burr-Brown Corporation

Teilenummer PCM4202DB
Beschreibung High-Performance 24-Bit/ 216kHz Sampling Stereo Audio Analog-to-Digital Converter
Hersteller Burr-Brown Corporation
Logo Burr-Brown Corporation Logo 




Gesamt 26 Seiten
PCM4202DB Datasheet, Funktion
PCM4202
SBAS290B − JULY 2003 − SEPTEMBER 2004
High-Performance 24-Bit, 216kHz Sampling
Stereo Audio Analog-to-Digital Converter
FEATURES
D Two High-Performance Delta-Sigma
Analog-to-Digital Converters
− 24-Bit Linear PCM or 1-Bit Direct Stream
Digital (DSD) Output Data
− Supports PCM Output Sampling Rates up
to 216kHz
− Supports 64fS and 128fS DSD Output Data
Rates
D Dynamic Performance: PCM Output
− Dynamic Range (VIN = −60dBFS,
fIN = 1kHz, A-Weighted): 118dB
− THD+N (VIN = −0.5dB, fIN = 1kHz): −105dB
D Dynamic Performance: DSD Output, 64fS
− Dynamic Range (A-Weighted): 115dB
− THD+N (VIN = −0.5dB, fIN = 1kHz): −102dB
D Audio Serial Port
− 24-Bit Linear PCM Output Data
− Master or Slave Mode Operation
− Supports Left-Justified, Right-Justified,
and I2SE Data Formats
D Additional PCM Output Features:
− Linear-Phase Digital Decimation Filter
− Digital High-Pass Filter for DC Removal
− Clipping Flag Output for Each Channel
D Power Supplies: +5V Analog and +3.3V Digital
D Power Dissipation:
− fS = 48kHz: 308mW typical
− fS = 96kHz: 338mW typical
− fS = 192kHz: 318mW typical
D Power-Down Mode
D Available in a SSOP-28 Package
D Pin- and Function-Compatible with the
PCM1804
APPLICATIONS
D Digital Recorders and Mixing Desks
D Digital Audio Effects Processors
D Broadcast Studio Equipment
D Surround-Sound Encoders
D High-End A/V Receivers
DESCRIPTION
The PCM4202 is a high-performance, stereo audio
analog-to-digital (A/D) converter designed for professional
and broadcast audio applications. The PCM4202
architecture utilizes a 1-bit delta-sigma modulator per
channel, incorporating a novel density modulated dither
scheme for improved dynamic performance.
The PCM4202 supports 24-bit linear PCM output data,
with sampling frequencies up to 216kHz. The PCM4202
can also be configured to output either 64x or 128x
oversampled, 1-bit direct stream digital (DSD) data for
each channel. Support for PCM and DSD output formats
makes the PCM4202 suitable for a variety of digital audio
recording and processing applications.
The PCM4202 includes a flexible audio serial port inter-
face, which supports standard audio data formats. Audio
data format selection, sampling mode configuration, and
high-pass filter functions are all programmed using dedi-
cated control pins.
The PCM4202 operates from a +5V analog power supply
and a +3.3V digital power supply. The digital I/O pins are
compatible with +3.3V logic families. The PCM4202 is
available in a small SSOP-28 package.
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.
I2S is a registered trademark of Royal Philips Electronics B.V., The Netherlands. All other trademarks are the property of their respective owners.
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.
Copyright 2003−2004, Texas Instruments Incorporated
www.ti.com






PCM4202DB Datasheet, Funktion
PCM4202
SBAS290B − JULY 2003 − SEPTEMBER 2004
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All parameters are specified at TA = +25°C with VCC = +5V, VDD = +3.3V, and a measurement bandwidth from 20Hz to 20kHz, unless otherwise
noted. System clock frequency is equal to 256fS for Single and Dual Rate sampling modes, and 128fS for Quad Rate sampling mode.
PCM4202
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL DECIMATION FILTER
Passband edge
Passband ripple
Single and Dual Rate
Single and Dual Rate
0.453fS
±0.005
Hz
dB
Passband edge
Stop band attenuation
Single and Dual Rate
Single and Dual Rate
0.547fS
−100
Hz
dB
Group delay
Passband edge (−0.005dB)
−3dB cutoff frequency
Passband ripple
Single and Dual Rate
Quad Rate
Quad Rate
Quad Rate
37/fS
0.375fS
0.490fS
±0.005
sec
Hz
Hz
dB
Passband edge
Stop band attenuation
Quad Rate
Quad Rate
0.770fS
−135
Hz
dB
Group delay
DIGITAL HIGH PASS FILTER
Quad Rate
9.5/fS
sec
Frequency response (−3dB)
POWER SUPPLY
fS/48000
Hz
Voltage range
VCC
+4.75
+5.0
+5.25
VDC
VDD
+3.0
+3.3
+3.6
VDC
Operating supply current
VCC = +5V, VDD = +3.3V
fS = 48kHz, Single Rate
55 65 mA
fS = 96kHz, Dual Rate
55 65 mA
fS = 192kHz, Quad Rate
55 65 mA
IDD VCC = +5V, VDD = +3.3V
fS = 48kHz, Single Rate
10 12 mA
fS = 96kHz, Dual Rate
19 25 mA
fS = 192kHz, Quad Rate
13 15 mA
Power-down mode current
VCC = +5V, VDD = +3.3V, RST = 0
ICC Clocks applied
10 mA
IDD Clocks applied
2 mA
Total power dissipation
VCC = +5V, VDD = +3.3V
fS = 48kHz, Single Rate
308 365 mW
fS = 96kHz, Dual Rate
338 408 mW
fS = 192kHz, Quad Rate
318 375 mW
(1) Applies to the RST input, pin 19.
(2) Single, Dual, and Quad Rate sampling modes are described within this data sheet.
(3) Dynamic performance parameters are measured using an Audio Precision System Two Cascade or Cascade Plus test system. The
measurement bandwidth is limited by using the Audio Precision 22Hz high-pass filter in combination with the Audio Precision 20kHz, fS/2, or
a user-defined 40kHz low-pass filter. All A-weighted measurements are performed using the Audio Precision A-weighting filter in combination
with the previously mentioned filters.
6

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PCM4202DB pdf, datenblatt
PCM4202
SBAS290B − JULY 2003 − SEPTEMBER 2004
PRODUCT OVERVIEW
The PCM4202 is a high-performance, stereo audio
analog-to-digital (A/D) converter designed for use in
professional and broadcast audio applications. The
PCM4202 features 24-bit linear PCM or 1-bit Direct
Stream Digital (DSD) data output capability for both
channels. Sampling rates up to 216kHz are supported for
PCM output formats, while 64x or 128x oversampled 1-bit
data is supported for DSD output mode. Native support for
both PCM and DSD data formats makes the PCM4202
ideal for use in a wide variety of audio recording and
processing applications.
The PCM4202 features 1-bit delta-sigma modulators
employing density modulated dither for improved dynamic
performance. Differential voltage inputs are utilized for the
modulators, providing excellent common-mode rejection.
On-chip voltage references are provided for the
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modulators, in addition to generating DC common-mode
bias voltage outputs for use with external input circuitry.
Linear phase digital decimation filtering is provided for the
24-bit PCM data outputs, with a minimum stop band
attenuation of −100dB for all sampling modes.
The PCM output mode features clipping flag outputs for
each channel, as well as a digital high-pass filter for DC
removal. The PCM4202 may be configured using
dedicated input pins for sampling mode and audio data
format selection, high-pass filter enable/disable, and
reset/power-down operation.
A +5V power supply is required for the analog section of
the device, while a +3.3V power supply is required for the
digital circuitry. Figure 1 shows the functional block
diagram for the PCM4202.
VINR+
VINR
VCOMR
AGNDR
VREFR
VREFL
AGNDL
VCOML
VINL
VINL+
Delta−Sigma
Modulator
Decimation
Filter
Voltage
Reference
Voltage
Reference
Delta−Sigma
Modulator
Decimation
Filter
Power
HPF
HPF
Reset
Logic
VCC AGND
VDD DGND
Audio
Serial
Port
Clock
Control
LRCK
or DSDBCK
BCK
or DSDL
DATA
or DSDR
CLIPR
CLIPL
S/M
FMT0
FMT1
HPFD
FS0
FS1
FS2
SCKI
RST
Figure 1. PCM4202 Functional Block Diagram
12

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