PCM5242 Texas instruments

PCM5242

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PCM5242

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Описание

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 4.2VRMS 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.

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
SPI or I²C Control
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

Number of DAC channels	2
Analog inputs	0
Analog outputs	2
DAC SNR (typ) (dB)	114
Sampling rate (max) (kHz)	384
Control interface	H/W, I2C, SPI
Resolution (Bits)	32
Architecture	Delta Sigma with line driver
Operating temperature range (°C)	-25 to 85
Rating	Catalog