参数资料
| 型号： | MAX9856ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/46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) |
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Analog Inputs
The MAX9856 features various analog inputs. All inputs
have independent gain control for maximum flexibility.
AUXIN is a mono auxiliary input that can be used for
mixing alarms, beeps, and sound effects into the head-
phone outputs or ADC input. The AUXIN signal has a
dedicated PGA for gain adjustment and can be mixed
into the headphone output signal directly, bypassing
the output mixer and volume control. AUXIN can also
serve as an input for making precise measurements in
the system. In this mode, the PGA is bypassed,
increasing the impedance of the input, and is directly
connected to the ADC.
Three microphone inputs are available. Two are pseudo-
differential inputs with a shared ground connected to the
inverting input of the microphone preamplifier. The third
is a fully differential input. Stereo microphones that share
a common return path can take advantage of the
pseudo-differential configuration by connecting the com-
mon return to the MICGND, canceling common-mode
noise. Figure 3 shows the typical application circuit for
both single-ended and differential microphones. The
microphone preamplifier and PGA provide a wide range
of gain options. The microphone inputs can also be used
as additional line inputs when the gain is set to 0dB.
A single low-noise bias voltage output is available
(MICBIAS) to bias microphones from a clean supply
with an external bias resistor. There are two selectable
microphone bias voltages that can be selected
depending on the power-supply voltage. Table 12 lists
the audio input control registers and bit description.
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
______________________________________________________________________________________
31
REG
B7
B6
B5
B4
B3
B2
B1
B0
0x11
PGADS
0x12
0
PGAAUX
0x13
0
PGAL1
0x14
0
PGAL2
0x15
0
PAENL
PGAML
0x16
0
PAENR
PGAMR
0x17
0
MMIC
MBSEL
0
LMICDIF
Table 12. Audio Input Control Registers
MICL/MICR
MICBIAS
JACKSNS
(a)
2.2k
Ω
MICGND
INLP
MICBIAS
JACKSNS
(b)
2.2k
Ω
INLN
2.2k
Ω
Figure 3. Typical Microphone Connections: (a) Pseudo-Differential, (b) Differential
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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 |
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