参数资料
型号: ADAU1361BCPZ-R7
厂商: Analog Devices Inc
文件页数: 24/80页
文件大小: 0K
描述: IC CODEC 24B PLL 32LFCSP
标准包装: 1,500
类型: 音频编解码器
数据接口: 串行
分辨率(位): 24 b
ADC / DAC 数量: 2 / 2
三角积分调变:
电压 - 电源,模拟: 1.8 V ~ 3.6 V
电压 - 电源,数字: 1.8 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ
包装: 带卷 (TR)
ADAU1361
Rev. C | Page 30 of 80
Analog Microphone Inputs
For microphone inputs, configure the part in either stereo
pseudo-differential mode or stereo full differential mode.
The LINN and LINP pins are the inverting and noninverting
inputs for the left channel, respectively. The RINN and RINP
pins are the inverting and noninverting inputs for the right
channel, respectively.
For a differential microphone input, connect the positive signal
to the noninverting input of the PGA and the negative signal to
the inverting input of the PGA, as shown in Figure 32. The PGA
settings are controlled with Register R8 (left differential input
volume control register, Address 0x400E) and Register R9 (right
differential input volume control register, Address 0x400F). The
PGA must first be enabled by setting the RDEN and LDEN bits.
07
67
9-
0
52
LEFT
MICROPHONE
LEFT
PGA
LDBOOST[1:0]
MUTE/
0dB/20dB
–12dB TO
+35.25dB
RIGHT
MICROPHONE
RIGHT
PGA
RDBOOST[1:0]
MUTE/
0dB/20dB
–12dB TO
+35.25dB
ADAU1361
LINP
LINN
RINN
MICBIAS
RINP
2k
2k
Figure 32. Stereo Differential Microphone Configuration
The PGA can also be used for single-ended microphone inputs.
Connect LINP and/or RINP to the CM pin. In this configura-
tion, the signal connects to the inverting input of the PGA,
LINN and/or RINN, as shown in Figure 33.
07
67
9-
0
53
LEFT
MICROPHONE
LEFT
PGA
LDBOOST[1:0]
MUTE/
0dB/20dB
–12dB TO
+35.25dB
RIGHT
MICROPHONE
RIGHT
PGA
RDBOOST[1:0]
MUTE/
0dB/20dB
–12dB TO
+35.25dB
ADAU1361
LINN
LINP
RINP
MICBIAS
RINN
CM
2k
2k
Figure 33. Stereo Single-Ended Microphone Configuration
Analog Line Inputs
Line input signals can be accepted by any analog input. It is
possible to route signals on the RINN, RINP, LINN, and LINP
pins around the differential amplifier to their own amplifier and
to use these pins as single-ended line inputs by disabling the
LDEN and RDEN bits (Bit 0 in Register R8, Address 0x400E,
and Bit 0 in Register R9, Address 0x400F). Figure 34 depicts a
stereo single-ended line input using the RINN and LINN pins.
The LAUX and RAUX pins are single-ended line inputs. They
can be used together as a stereo single-ended auxiliary input, as
shown in Figure 34. These inputs can bypass the input gain
control, mixers, and ADCs to directly connect to the output
playback mixers (see auxiliary bypass in Figure 31).
0
76
79
-05
4
ADAU1361
–12dB TO +6dB
LINNG[2:0]
LINN
LEFT LINE
INPUT
–12dB TO +6dB
RINNG[2:0]
RINN
RIGHT LINE
INPUT
LAUX
LEFT AUX
INPUT
RAUX
RIGHT AUX
INPUT
AUXILIARY
BYPASS
Figure 34. Stereo Single-Ended Line Input with Stereo Auxiliary Bypass
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