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| 型号： | EVAL-ADAU1381Z |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/84页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADAU1381 |
| 标准包装： | 1 |
| 主要目的： | 音频编解码器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADAU1381 |
| 已供物品： | 板 |
| 相关产品： | ADAU1381BCBZ-RL7DKR-ND - IC AUDIO CODEC STEREO LN 30WLCSP ADAU1381BCBZ-RL7CT-ND - IC AUDIO CODEC STEREO LN 30WLCSP ADAU1381BCBZ-RL-ND - IC AUDIO CODEC STEREO LN 30WLCSP ADAU1381BCPZ-RL7-ND - IC AUDIO CODEC STEREO LN 32LFCSP ADAU1381BCPZ-RL-ND - IC AUDIO CODEC STEREO LN 32LFCSP ADAU1381BCBZ-RL7TR-ND - IC AUDIO CODEC STEREO LN 30WLCSP ADAU1381BCPZ-ND - IC AUDIO CODEC STEREO LN 32LFCSP |
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ADAU1381
Rev. B | Page 24 of 84
THEORY OF OPERATION
The ADAU1381 is a low power audio codec with an integrated,
fixed-function audio processing sound engine. It is an all-in-one
package that offers high quality audio, low power, small size, and
many advanced features. The stereo ADC and stereo DAC each
have a dynamic range (DNR) performance of at least 96.5 dB and
a total harmonic distortion plus noise (THD + N) performance
of at least 90 dB. The serial data port is compatible with I2S, left-
justified, right-justified, and TDM modes for interfacing to digital
audio data. The operating voltage range is 1.8 V to 3.65 V, with
an on-board regulator generating the internal digital supply voltage.
The record path includes very flexible input configurations that
can accept differential or single-ended analog microphone inputs
as well as two stereo digital microphone inputs. There is also a
beep input pin (BEEP) dedicated to analog beep signals that are
common in digital still camera applications. A microphone bias
pin that can power electrets-type microphones is also available.
Each input signal has its own programmable gain amplifier (PGA)
for input volume adjustment. An automatic level control (ALC)
is built into the sound engine to maintain a constant input re-
cording volume.
The ADCs and DACs are high quality, 24-bit Σ-Δ converters
that operate at selectable 64× or 128× oversampling rates. The
base sampling rate of the converters is set by the input clock rate
and can be further scaled with the converter control register
settings. The converters can operate at sampling frequencies
from 8 kHz to 96 kHz. The ADCs and DACs also include very
fine-step digital volume controls.
The playback path allows input signals and DAC outputs to be
mixed into speaker and/or line outputs. The speaker driver is
capable of driving 400 mW into an 8 Ω load.
The fixed-function sound engine contains a digital audio
processing flow optimized for digital still camera stereo audio
processing. However, the flexibility offered by the built-in
sound engine allows this codec to be used for a wide variety of
low power applications. Signal processing blocks included in the
sound engine include the following:
Wind noise detection and autofiltering
Dual-band compression with programmable crossover,
compression curves, and timing
Programmable multiband equalizer
Configurable notch filter
Enhanced stereo capture algorithm
Automatic level control
Digital volume control
Multiplexers for signal routing
The ADAU1381 can generate its internal clocks from a wide
range of input clocks by using the on-board fractional PLL.
The PLL accepts inputs from 11 MHz to 20 MHz.
The ADAU1381 is provided in a small, 32-lead, 5 mm × 5 mm
lead frame chip scale package (LFCSP) with an exposed bottom
pad, or a 30-ball (6 × 5 bump), 3.4 mm × 2.64 mm wafer level
chip scale package (WLCSP).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-ADAU1401AEBZ | 功能描述:BOARD EVAL FOR ADAU1401A RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| EVAL-ADAU1401EB | 制造商:AD 制造商全称:Analog Devices 功能描述:SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| EVAL-ADAU1401EBZ | 功能描述:BOARD EVAL FOR ADAU1401 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:SigmaDSP® 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| EVAL-ADAU1401-EBZ | 制造商:Analog Devices 功能描述:EVALUATION KIT ((NS)) |
| EVAL-ADAU1442EBZ | 功能描述:BOARD EVAL FOR ADAU1442 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:SigmaDSP® 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
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