PCM5242_15 Datasheet, PDF (1/128 Pages) Texas Instruments – PCM5242 4.2-VRMS DirectPath™, 114-dB Audio Stereo Differential-Output DAC with 32-bit, 384-kHz PCM Interface

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PCM5242
SLASE12A – JULY 2014 – REVISED OCTOBER 2014
PCM5242 4.2-V_RMS DirectPath™, 114-dB Audio Stereo Differential-Output DAC with 32-bit,
384-kHz PCM Interface
1 Features
•1 Differential DirectPath™ Ground Biased Outputs
• Market-Leading Low Out-of-Band Noise
• Selectable Digital-Filter Latency and Performance
• No DC Blocking Capacitors Required
• Integrated Negative Charge Pump
• Intelligent Muting System; Soft Up or Down Ramp
and Analog Mute for 120dB Mute SNR
• Integrated High-Performance Audio PLL With
BCK Reference to Generate SCK Internally
• Accepts 16-, 24-, and 32-Bit Audio Data
• PCM Data Formats: I²S, Left-Justified, Right-
Justified, TDM
• SPI or I²C Control
• Software or Hardware Configuration
• Automatic Power-Save Mode When LRCK And
BCK Are Deactivated
• 1.8V or 3.3V Failsafe LVCMOS Digital Inputs
• Single Supply Operation:
– 3.3V Analog, 1.8V or 3.3V Digital
• Integrated Power-On Reset
• Small 32-terminal QFN Package
2 Applications
• HiFi Smartphone
• A/V Receivers
• DVD, BD Players
• HDTV Receivers
3 Description
The PCM5242 is a monolithic CMOS integrated
circuit that includes a stereo digital-to-analog
converter and additional support circuitry in a small
QFN package. The PCM5242 uses the latest
generation of TI’s advanced segment-DAC
architecture to achieve excellent dynamic
performance and improved tolerance to clock jitter.
The PCM5242 integrates a fully programmable
miniDSP core, allowing developers to integrate filters,
dynamic range controls, custom interpolators and
other differentiating features to their products.
The PCM5242 provides 4.2V_RMS ground-centered
differential outputs, allowing designers to eliminate
DC blocking capacitors on the output, as well as
external muting circuits traditionally associated with
single supply line drivers.
The integrated PLL on the device removes the
requirement for a system clock (commonly known as
master clock), allowing a 3-wire I²S connection and
reducing system EMI.
PART NAME
PCM5242
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
VQFN (32)
5.00mm × 5.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified System Diagram
2ch Single Ended
PCM1863/5
IN
AUX
2ch Single Ended
I2S
BCK
LRCK
miniDSPs,
Filters
DOUT
Current Segment DAC
PCM5242
TPA3130
TPA6120A2
Analog
Sensor
- Light Intensity
- Ultrasonic
- Battery Level
BT Module
MSP430
WiLAN chip
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.