参数资料
| 型号： | MAX9856ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/46页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO CODEC 40TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 音频编解码器 |
| 数据接口： | 串行 |
| 分辨率（位）： | 18 b |
| ADC / DAC 数量： | 2 / 2 |
| 三角积分调变： | 是 |
| S/N 比，标准 ADC / DAC (db)： | 77 / 91 |
| 动态范围，标准 ADC / DAC (db)： | 85 / 91 |
| 电压 - 电源，模拟： | 1.71 V ~ 3.6 V |
| 电压 - 电源，数字： | 1.71 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
18
______________________________________________________________________________________
Detailed Description
The MAX9856 is a high-performance, low-power stereo
audio CODEC designed to provide a complete audio
solution. Operating from a 1.8V supply, the MAX9856
achieves high performance and reasonable output power
while consuming only 9mW in DAC playback mode.
The internal 18-bit sigma-delta DAC accepts stereo di-
gital audio signals, and converts them to stereo audio
outputs that can be mixed with line inputs and/or micro-
phone inputs. The DAC is capable of operating at sam-
ple rates ranging from 8kHz to 96kHz with any master
clock frequency between 10MHz and 60MHz. The DAC
is capable of operating at a different sample rate than
the ADC. Both master and slave modes are available
when operating the interface in left-justified, I2S or PCM
data format. The incoming data can be level shifted and
highpass filtered in the digital domain. The highpass fil-
tering allows only reproducible frequencies to be con-
verted, saving power and improving sound quality.
The MAX9856 features stereo DirectDrive headphone
amplifiers and line outputs, which eliminate the need for
large output-coupling capacitors. The audio output path
includes high-quality mixing amplifiers to allow flexibility
in choosing from the DAC output and the stereo analog
line inputs. Volume control amplifiers provide adjustable
gains between +5.5dB and -74dB for the headphones.
The line outputs are capable of generating a 1VRMS out-
put signal from a full-scale digital input.
The digital audio signals of the internal 18-bit sigma-
delta ADC outputs are converted from the analog micro-
phone and line input paths. The ADC is capable of
operating at a sample rate ranging from 8kHz to 48kHz
with any master clock frequency between 10MHz and
60MHz. The ADC is capable of operating at a different
sample rate than the DAC. Both master and slave
modes are available when operating the interface in left-
justified, I2S, or PCM data formats. The outgoing data
can be level shifted and highpass filtered in the digital
domain. The highpass filtering allows reduction of wind
noise from microphone inputs.
Three microphone inputs are available. One fully differ-
ential input can be used with internal microphones
while a pair of single-ended inputs can be used with an
external mono or stereo headset microphone.
Selectable gain of 0dB, 20dB, and 30dB can be
applied to the input signals in addition to a 0 to 20dB
input PGA. The MAX9856 features AGC on the micro-
phone input path to automatically compensate for vary-
ing input signal levels and the limited dynamic range of
most microphones. The integrated noise gate provides
low-level audio noise quieting to lower the audible
noise floor.
An auxiliary input is available for sending externally
generated beeps and sound effects directly to the
headphones. The auxiliary input can also be used to
make DC measurements with the ADC by providing a
direct path to the ADC.
HPL, HPR, and JACKSNS provide a headset detection
feature which can both detect the insertion of a jack
and measure the load impedance. Jack detection can
be done in both shutdown and powered-on mode. The
headphone and line outputs feature ground sensing to
reduce ground noise. Reduced output offset voltage
and extensive click-and-pop suppression circuitry on
headphone amplifiers eliminate audible clicks and
pops at startup and shutdown
I2C Register Address Map
and Definitions
The MAX9856 has 28 internal registers used for config-
uration and status reporting. Table 1 lists all the regis-
ters, their addresses, and power-on-reset (POR) states.
Registers 0x00 and 0x01 are read only, while all the
other registers are read/write. Write zeros to all unused
bits in the register table when updating the register,
unless otherwise noted.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX9860ETG+T | IC CODEC MONO AUD 16BIT 24TQFN |
| MAX9867ETJ+T | IC STEREO AUD CODEC LP 32TQFN-EP |
| MAX9880AETM+ | IC CODEC AUDIO STEREO 48TQFN |
| MB86064PB-GE1 | DAC 14BIT 1GSA/S DUAL 12-EFBGA |
| MC100EL1648MELG | IC OSC VCO 1.1GHZ 14SOEIAJ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9856EVKIT+ | 功能描述:音频 IC 开发工具 Evaluation Kit for the MAX9856 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 |
| MAX9856GTL/V+ | 功能描述:接口—CODEC Low-Power Audio CODEC with DirectDrive Headphone Amplifiers 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 |
| MAX9856GTL/V+T | 功能描述:接口—CODEC Low-Power Audio CODEC with DirectDrive Headphone Amplifiers 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 |
| MAX985EBT+T | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX985EBT+TG45 | 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。