Datasheet

PCM3070
SLAS724 – FEBRUARY 2011 www.ti.com
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.
DESCRIPTION (CONTINUED)
The PCM3070 features two fully-programmable miniDSP cores that support application-specific algorithms in the
record and/or the playback path of the device. The miniDSP cores are fully software controlled. Target
algorithms, like speaker EQ, Crossovers, Dynamic Range Controls, Intelligent volume controls and other
post-processing algorithms are loaded into the device after power-up.
Extensive register-based control of input/output channel configuration, gains, effects, pin-multiplexing and clocks
is included, allowing the device to be precisely targeted to its application.
The record path of the PCM3070 covers operations from 8kHz mono to 192kHz stereo recording, and contains
programmable input channel configurations covering single-ended and differential setups, as well as floating or
mixed input signals.
The playback path offers signal-processing blocks for filtering and effects, and supports flexible mixing of DAC
and analog input signals as well as programmable volume controls. The playback path contains two high-power
output drivers as well as two fully-differential outputs. The high-power outputs can be configured in multiple ways,
including stereo and mono BTL.
The voltage supply range for the PCM3070 for analog is 1.5V–1.95V, and for digital it is 1.26V–1.95V. To ease
system-level design, LDOs are integrated to generate the appropriate analog or digital supply from input voltages
ranging from 1.8V to 3.6V. Digital I/O voltages are supported in the range of 1.5V–3.6V.
The required internal clock of the PCM3070 can be derived from multiple sources, including the MCLK pin, the
BCLK pin, the GPIO pin or the output of the internal PLL, where the input to the PLL again can be derived from
the MCLK pin, the BCLK or GPIO pins. The PLL is highly programmable and can accept available input clocks in
the range of 512kHz to 50MHz.
The device is available in the 5mm × 5mm, 32-pin QFN package.
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Product Folder Link(s): PCM3070