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CS42325 датащи(PDF) 2 Page - Cirrus Logic |
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CS42325 датащи(HTML) 2 Page - Cirrus Logic |
2 / 71 page 2 DS838A2 CS42325 System Features High Performance 24-bit Converters – Multi-bit Delta-Sigma Modulator – Up to 96 kHz Sampling Rates Direct Interface with 1.8 V to 3.3 V Logic Levels Supports Asynchronous Serial Port Operation – Two Independent Clock Domains – ADC, DAC1, and DAC2 can be Independently Assigned to the Two Clock Domains – Each Serial Port Supports Master or Slave Operation Internal Digital Loopback +3.3 V Analog Power Supply +3.3 V Digital Power Supply +9 V to +12 V High-Voltage Power Supply Hardware or Software Mode Configuration – Supports I²C® and SPI™ Software Interface General Description The CS42325 is a highly integrated stereo audio CODEC. The CS42325 performs stereo analog-to- digital (A/D) and up to four channels of digital-to-analog (D/A) conversion of up to 24-bit serial values at sample rates up to 96 kHz. A 5:1 stereo input multiplexer is included for selecting between line-level inputs. The output of the input multi- plexer is followed by an advanced 3rd-order, multi-bit delta-sigma modulator and digital filtering/decimation. Sampled data is transmitted by the serial audio inter- face at rates from 4 kHz to 96 kHz, in either Slave or Master Mode. The D/A converter is based on a 5th-order multi-bit del- ta-sigma modulator with an ultra-linear low-pass filter and offers a volume control that operates with a 0.5 dB step size. It incorporates selectable soft ramp and zero crossing transition functions to eliminate clicks and pops. An integrated 7:1 stereo output multiplexer on each of the three stereo 2 Vrms line-level outputs is used to se- lect any of the 5 stereo analog inputs, for analog bypass support, or the outputs of the 2 internal DACs. Each 2 Vrms output can be muted with the selectable analog mute function. Analog output 3 has a built in headphone driver and can be used either as a line output or head- phone output. Standard 50/15 μs de-emphasis is available for a 44.1 kHz sample rate for compatibility with digital audio programs mastered using the 50/15 μs pre-emphasis technique. Integrated digital level translators allow easy interfacing between the CS42325 and other devices operating over a wide range of logic levels. The CS42325 is available in a 48-pin LQFP package in Commercial (-40°C to +85°C) and Automotive (-40°C to +105°C) grades. The CDB42325 Customer Demonstra- tion board is also available for device evaluation and implementation suggestions. Please refer to “Ordering information” on page 71 for complete details. |
Аналогичный номер детали - CS42325 |
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Аналогичное описание - CS42325 |
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