特長と概要
- Ultra Low Out-of-Band Noise
- Integrated High-Performance Audio PLL with BCK
Reference to Generate SCK Internally
- Direct Line Level 2.1-VRMS Output
- No DC Blocking Capacitors Required
- Line Level Output Down to 1KΩ
- Intelligent Muting System; Soft Up or Down Ramp
and Analog Mute For 120-dB Mute SNR
- Accepts 16-, 24-, and 32-Bit Audio Data
- PCM Data Formats: I2S, Left-Justified
- Automatic Power-Save Mode When LRCK And
BCK Are Deactivated
- 1.8 V or 3.3 V Failsafe LVCMOS Digital Inputs
- Simple Configuration Using Hardware Pins
- Single-Supply Operation: 14
- 3.3 V Analog, 1.8 V or 3.3 V Digital
- Qualified in Accordance with AEC-Q100
The PCM510xA devices are a family of monolithic CMOS-integrated
circuits that include a stereo digital-to-analog converter and additional support circuitry in a
small TSSOP package. The PCM510xA devices use the latest generation of TI’s
advanced segment-DAC architecture to achieve excellent dynamic performance and improved tolerance
to clock jitter.
Using Directpath™ charge-pump
technology, the PCM510xA devices provide 2.1-VRMS ground
centered 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 line driver surpasses all other charge-pump based line drivers by
supporting loads down to 1 kΩ per pin.
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.
Intelligent clock error and PowerSense undervoltage protection utilizes a two-level mute
system for pop-free performance.
Compared with many conventional switched capacitor DAC architectures, the
PCM510xA family offers up to 20 dB lower out-of-band noise, reducing EMI and
aliasing in downstream amplifiers/ADCs, measured from the traditional 100-kHz OBN measurements to 3
MHz).
