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| 型号： | MAX9867ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 36/55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： | 2,500 |
| 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： | 带卷 (TR) |
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MAX9867
Ultra-Low Power Stereo Audio Codec
______________________________________________________________________________________
41
Complete DC Measurement Example
MCLK = 13MHz, slave mode, BCLK and LRCLK not
externally supplied:
1) Configure the digital audio interface for fS = 48kHz
(PSCLK = 01, FREQ = 0x0, PLL = 0, NI = 0x5ABE,
MAS = 0).
2) Disable JACKSNS (JDETEN = 0).
3) Enable the left and right ADC; take the MAX9867 out
of shutdown (ADLEN = ADREN = SHDN = 1).
4) Calibrate the offset:
a. Enable the AUX input (AUXEN = 1).
b. Enable the offset calibration (AUXCAL = 1).
c. Wait 40ms.
d. Complete calibration (AUXCAL = 0).
5) Calibrate the gain:
a. Start gain calibration (AUXGAIN = 1).
b. Wait 40ms.
c. Freeze the measurement results (AUXCAP = 1).
d. Read AUX and store the value in memory to cor-
rect all future measurements (k = AUX[15:0]).
e. Complete calibration (AUXGAIN = AUXCAP =
AUXEN = 0).
6) Measure the voltage on JACKSNS/AUX:
a. Enable the AUX input (AUXEN = 1).
b. Wait 40ms.
c. Freeze the measurement results (AUXCAP = 1).
d. Read AUX and correct with the gain calibration
value.
e. Complete measurement (AUXCAP = 0).
7) DC measurement complete.
Table 14. ADC Input Register
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
REGISTER
ADDRESS
ADC Input
MXINL
MXINR
AUXCAP
AUXGAIN
AUXCAL
AUXEN
0x14
BITS
FUNCTION
MXINL/MXINR
Left/Right ADC Audio Input Mixer
00 = No input is selected.
01 = Left/right analog microphone
10 = Left/right line input
11 = Left/right analog microphone + line input
Note: If the right-line input is disabled, then the left-line input is connected to both mixers. Enabling the
left and right digital microphones disables the left and right audio mixers, respectively. See DIGMICL/
DIGMICR in Table 15 for more details.
AUXCAP
Auxiliary Input Capture
0 = Update AUX with the voltage at JACKSNS/AUX.
1 = Hold AUX for reading.
AUXGAIN
Auxiliary Input Gain Calibration
0 = Normal operation
1 = The input buffer is disconnected from JACKSNS/AUX and connected to an internal voltage reference.
While in this mode, read the AUX register and store the value. Use the stored value as a gain
calibration factor, K, on subsequent readings.
AUXCAL
Auxiliary Input Offset Calibration
0 = Normal operation
1 = JACKSNS/AUX is disconnected from the input and the ADC automatically calibrates out any internal
offsets.
AUXEN
Auxiliary Input Enable
0 = Use JACKSNS/AUX for jack detection.
1 = Use JACKSNS/AUX for DC measurements.
Note: For AUXEN = 1, set MXINR = 00, ADLEN = 1, and ADREN = 1.
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相关代理商/技术参数 |
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|---|---|
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| 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 |
| MAX986ESA | 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 |
| MAX986ESA+ | 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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