Texas Instruments PCM5142 Evaluation Module PCM5142EVM-U PCM5142EVM-U Datenbogen
Produktcode
PCM5142EVM-U
SLAS759A – AUGUST 2012 – REVISED SEPTEMBER 2012
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.
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.
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
OTHER KEY FEATURES
The PCM514x provides 2.1V
RMS
ground centered
•
PCM Data Formats: I
2
S, Left-Justified, Right-
outputs, allowing designers to eliminate DC blocking
Justified, TDM
capacitors on the output, as well as external muting
circuits traditionally associated with single supply line
circuits traditionally associated with single supply line
•
SPI or I
2
C Control
drivers.
•
Software or Hardware Configuration
The integrated line driver surpasses all other charge-
•
Automatic Power-Save Mode When LRCK And
pump based line drivers by supporting loads down to
BCK Are Deactivated
1k
Ω
. By supporting loads down to 1k
Ω
, the PCM514x
•
1.8V or 3.3V Failsafe LVCMOS Digital Inputs
can essentially drive up to 10 products in parallel,
•
Single Supply Operation:
such as LCD TV, DVDR, AV Receivers.
–
3.3V Analog, 1.8V or 3.3V Digital
The integrated PLL on the device removes the
•
Integrated Power-On Reset
requirement for a system clock (commonly known as
master clock), allowing a 3-wire I
master clock), allowing a 3-wire I
2
S connection and
•
Small 28-pin TSSOP Package
reducing system EMI.
APPLICATIONS
In addition, the PLL is completely programmable,
allowing the device to become the I
allowing the device to become the I
2
S clock master
•
A/V Receivers
and drive a DSP serial port as a slave. The PLL also
•
DVD, BD Players
accepts a non-standard clock (up to 50MHz) as a
•
HDTV Receivers
source to generate the audio related clock (for
example 24.576MHz).
example 24.576MHz).
•
Applications Requiring 2V
RMS
Audio Output
Intelligent clock error and PowerSense undervoltage
DESCRIPTION
protection utilizes a two level mute system for pop-
free performance. Upon clock error or system power
free performance. Upon clock error or system power
The PCM514x devices are a family of monolithic
failure, the device digitally attenuates the data (or last
CMOS integrated circuits that include a stereo digital-
known good data), then mutes the analog circuit.
to-analog converter and additional support circuitry in
a small TSSOP package. The PCM514x uses the
a small TSSOP package. The PCM514x uses the
Compared
with
existing
DAC
technology,
the
latest generation of TI’s advanced segment-DAC
PCM514x family offers up to 20dB lower out-of-band
architecture
to
achieve
excellent
dynamic
noise, reducing EMI and aliasing in downstream
performance and improved tolerance to clock jitter.
amplifiers/ADCs.
(from
traditional
100kHz
OBN
measurements all the way to 3MHz).
Members of the PCM514x family integrate a fully
programmable miniDSP core, allowing developers to
programmable miniDSP core, allowing developers to
The PCM514x accepts industry-standard audio data
integrate filters, dynamic range controls, custom
formats with 16- to 32-bit data. Sample rates up to
interpolators and other differentiating features to their
384kHz are supported.
products.
Table 1. Differences Between PCM514x Devices
Part Number
Dynamic Range
SNR
THD
PCM5142
112dB
112dB
–93dB
PCM5141
106dB
106dB
–92dB
2
Copyright © 2012, Texas Instruments Incorporated
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