參數(shù)資料
型號： TLV320AIC23IGQER
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： Stereo Audio CODEC, 8-to 96-kHz, With Integrated Headphone Amplifier
中文描述： 立體聲音頻編解碼器，8到96千赫，具有集成耳機放大器
文件頁數(shù)： 7/44頁
文件大小： 236K
代理商： TLV320AIC23IGQER
1
–
1
1 Introduction
The TLV320AIC23 is a high-performance stereo audio codec with highly integrated analog functionality. The
analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) within the TLV320AIC23 use multibit
sigma-delta technology with integrated oversampling digital interpolation filters. Data-transfer word lengths of 16, 20,
24, and 32 bits, with sample rates from 8 kHz to 96 kHz, are supported. The ADC sigma-delta modulator features
third-order multibit architecture with up to 90-dBA signal-to-noise ratio (SNR) at audio sampling rates up to 96 kHz,
enabling high-fidelity audio recording in a compact, power-saving design. The DAC sigma-delta modulator features
a second-order multibit architecture with up to 100-dBA SNR at audio sampling rates up to 96 kHz, enabling
high-quality digital audio-playback capability, while consuming less than 23 mW during playback only. The
TLV320AIC23 is the ideal analog input/output (I/O) choice for portable digital audio-player and recorder applications,
such as MP3 digital audio players.
Integrated analog features consist of stereo-line inputs with an analog bypass path, a stereo headphone amplifier,
with analog volume control and mute, and a complete electret-microphone-capsule biasing and buffering solution.
The headphone amplifier is capable of delivering 30 mW per channel into 32
. The analog bypass path allows use
of the stereo-line inputs and the headphone amplifier with analog volume control, while completely bypassing the
codec, thus enabling further design flexibility, such as integrated FM tuners. A microphone bias-voltage output
provides a low-noise current source for electret-capsule biasing. The AIC23 has an integrated adjustable microphone
amplifier (gain adjustable from 1 to 5) and a programmable gain microphone amplifier (0 dB or 20 dB). The
microphone signal can be mixed with the output signals if a sidetone is required.
While the TLV320AIC23 supports the industry-standard oversampling rates of 256 f
s
and 384 f
s
, unique oversampling
rates of 250 f
s
and 272 f
s
are provided, which optimize interface considerations in designs using TI C54x digital signal
processors (DSPs) and universal serial bus (USB) data interfaces. A single 12-MHz crystal can supply clocking to
the DSP, USB, and codec. The TLV320AIC23 features an internal oscillator that, when connected to a 12-MHz
external crystal, provides a system clock to the DSP and other peripherals at either 12 MHz or 6 MHz, using an internal
clock buffer and selectable divider. Audio sample rates of 48 kHz and compact-disc (CD) standard 44.1 kHz are
supported directly from a 12-MHz master clock with 250 f
s
and 272 f
s
oversampling rates.
Low power consumption and flexible power management allow selective shutdown of codec functions, thus
extending battery life in portable applications. This design solution, coupled with the industry
’
s smallest package, the
TI proprietary MicroStar Junior
using only 25 mm
2
of board area, makes powerful portable stereo audio designs
easily realizable in a cost-effective, space-saving total analog I/O solution: the TLV320AIC23.
1.1
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
–
I
2
S-Compatible Interface Requiring Only One McBSP for both ADC and DAC
–
Standard I
2
S, MSB, or LSB Justified-Data Transfers
–
16/20/24/32-Bit Word Lengths
MicroStar Junior is a trademark of Texas Instruments.
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相關代理商/技術參數(shù)
參數(shù)描述
TLV320AIC23IPW 功能描述:接口—CODEC LP Port Audio RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC23IPWG4 功能描述:接口—CODEC LP Port Audio RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC23IPWR 功能描述:接口—CODEC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC23IPWRG4 功能描述:接口—CODEC 256 x 18 3.3-V Synch FIFO Memory RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
TLV320AIC23PW 功能描述:接口—CODEC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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