نقد و بررسی
TLV320AIC23PWIC AUDIO STEREO CODEC 28-TSSOP / Stereo Audio Interface 16 b, 20 b, 24 b, 32 b I2C, Serial 28-TSSOP
Features
• High-Performance Stereo Codec
– 90-dB SNR Multibit Sigma-Delta ADC (A-weighted at 48 kHz)
– 100-dB SNR Multibit Sigma-Delta DAC (A-weighted at 48 kHz)
– 1.42 V – 3.6 V Core Digital Supply: Compatible With TI C54x DSP Core Voltages
– 2.7 V – 3.6 V Buffer and Analog Supply: Compatible Both TI C54x DSP Buffer Voltages
– 8-kHz – 96-kHz Sampling-Frequency Support
• Software Control Via TI McBSP-Compatible Multiprotocol Serial Port
– 2-wire-Compatible and SPI-Compatible Serial-Port Protocols
– Glueless Interface to TI McBSPs
• Audio-Data Input/Output Via TI McBSP-Compatible Programmable Audio Interface
– I2S-Compatible Interface Requiring Only One McBSP for both ADC and DAC
– Standard I2S, MSB, or LSB Justified-Data Transfers
– 16/20/24/32-Bit Word Lengths
– Audio Master/Slave Timing Capability Optimized for TI DSPs (250/272 fs), USB mode
– Industry-Standard Master/Slave Support Provided Also (256/384 fs), Normal mode
– Glueless Interface to TI McBSPs
• Integrated Total Electret-Microphone Biasing and Buffering Solution
– Low-Noise MICBIAS pin at 3/4 AVDD for Biasing of Electret Capsules
– Integrated Buffer Amplifier With Tunable Fixed Gain of 1 to 5
– Additional Control-Register Selectable Buffer Gain of 0 dB or 20 dB
• Stereo-Line Inputs
– Integrated Programmable Gain Amplifier
– Analog Bypass Path of Codec
• ADC Multiplexed Input for Stereo-Line Inputs and Microphone
• Stereo-Line Outputs
– Analog Stereo Mixer for DAC and Analog Bypass Path
• Analog Volume Control With Mute
• Highly Efficient Linear Headphone Amplifier
– 30 mW into 32 Ω From a 3.3-V Analog Supply Voltage
• Flexible Power Management Under Total Software Control
– 23-mW Power Consumption During Playback Mode
– Standby Power Consumption <150 µW
– Power-Down Power Consumption <15 µW
• Industry’s Smallest Package: 32-Pin TI Proprietary MicroStar Junior
– 25 mm2 Total Board Area
– 28-Pin TSSOP Also Is Available (62 mm2 Total Board Area)
• Ideally Suitable for Portable Solid-State Audio Players and Recorders
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