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| 型号： | MAX9867ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/55页 |
| 文件大小： | 0K |
| 描述： | IC STEREO AUD CODEC LP 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 立体声音频 |
| 数据接口： | I²C，串行 |
| 分辨率（位）： | 18 b |
| ADC / DAC 数量： | 2 / 2 |
| 三角积分调变： | 是 |
| 动态范围，标准 ADC / DAC (db)： | 85 / 90 |
| 电压 - 电源，模拟： | 1.65 V ~ 1.95 V |
| 电压 - 电源，数字： | 1.65 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 托盘 |
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Detailed Description
The MAX9867 is a low-power stereo audio codec
designed for portable applications requiring minimum
power consumption.
The stereo playback path accepts digital audio through
a flexible interface compatible with I2S, TDM, and left-
justified signals. An oversampling sigma-delta DAC
converts the incoming digital data stream to analog
audio and outputs the audio through the stereo head-
phone amplifier. The headphone amplifier can be con-
figured in differential, single-ended, and capacitorless
output modes.
The stereo record path has two analog microphone
inputs with selectable gain. An integrated microphone
bias can be used to power the microphones. The left
analog microphone inputs can also accept data from
up to two digital microphones. An oversampling sigma-
delta ADC converts the microphone signals and out-
puts the digital bit stream over the digital audio
interface.
Integrated digital filtering provides a range of notch and
highpass filters for both the playback and record paths
to limit undesirable low-frequency signals and GSM
transmission noise. The digital filtering provides attenuation
of out-of-band energy by over 70dB, eliminating audi-
ble aliasing. A digital sidetone function allows audio
from the record path to be summed into the playback
path after digital filtering.
The MAX9867 also includes two stereo, single-ended
line inputs with gain adjustment, which can be record-
ed by the ADCs and/or output by the headphone ampli-
fiers. An auxiliary ADC accurately measures a DC
voltage by utilizing the right audio ADC and reporting
the DC voltage through the I2C interface. A jack detec-
tion function allows the detection of headphone, micro-
phone, and headset jacks. Insertion and removal
events can be programmed to trigger a hardware inter-
rupt and flag an I2C register bit.
The MAX9867’s flexible clock circuitry utilizes a program-
mable clock divider and a digital PLL, allowing the DAC
and ADC to operate at maximum dynamic range for all
combinations of master clock (MCLK) and sample rate
(LRCLK) without consuming extra supply current. Any
master clock between 10MHz and 60MHz is supported
as are all sample rates from 8kHz to 48kHz. Master and
slave modes are supported for maximum flexibility.
MAX9867
Ultra-Low Power Stereo Audio Codec
______________________________________________________________________________________
21
Pin Description (continued)
PIN/BUMP
TQFN-EP
WLP
NAME
FUNCTION
22
E3
LOUTP
Positive Left-Channel Headphone Output. Connect directly to the load in
differential and capacitorless mode. AC-couple to the load in single-ended mode.
23
E2
PVDD
Headphone Power Supply. Bypass to PGND with a 1F capacitor.
24, 25
—
N.C.
No Connection
26
E1
DVDDIO
Digital Audio Interface Power Supply. Bypass to DGND with a 1F capacitor.
27
D1
SDOUT
Digital Audio Serial-Data ADC Output
28
C2
SDIN
Digital Audio Serial-Data DAC Input
29
C1
LRCLK
Digital Audio Left-Right Clock Input/Output. LRCLK is the audio sample rate clock
and determines whether the audio data on SDIN is routed to the left or right
channel. In TDM mode, LRCLK is a frame synchronization pulse. LRCLK is an
input when the MAX9867 is in slave mode and an output when in master mode.
30
B1
BCLK
Digital Audio Bit Clock Input/Output. BCLK is an input when the MAX9867 is in
slave mode and an output when in master mode.
31
B2
MCLK
Master Clock Input. Acceptable input frequency range: 10MHz to 60MHz.
32
A1
DVDD
Digital Power Supply. Supply for the digital circuitry and I
2C interface. Bypass to
DGND with a 1F capacitor.
—
EP
Exposed Pad. Connect the exposed thermal pad to AGND.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9867ETJ+ | 功能描述:接口—CODEC Stereo Audio CODEC for Portable Devices RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| MAX9867ETJ+T | 功能描述:接口—CODEC Stereo Audio CODEC for Portable Devices RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| MAX9867EVKIT+ | 功能描述:音频 IC 开发工具 MAX9867 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX9867EWV+ | 制造商:Maxim Integrated Products 功能描述:LOW-POWER, STEREO AUDIO CODEC - Rail/Tube |
| MAX9867EWV+T | 功能描述:接口—CODEC Stereo Audio CODEC for Portable Devices RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
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