参数资料
型号: TLV320AIC11CPFB
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: GREEN, PLASTIC, TQFP-48
文件页数: 10/55页
文件大小: 263K
代理商: TLV320AIC11CPFB
2–4
2.1.4
MIC Input
The auxiliary inputs (AURXFP, AURXCP, and AURXM) can be programmed to interface with a microphone such as
an electret microphone, as illustrated in Figure 2–5, by writing a 1 to both bit D6 and bit D4 of control register 1.
Sigma-
Delta
ADC
PGA
TLV320AIC11
Anti-
Aliasing
Filter
Vref
AURXFP
Electret
Microphone
MIC_BIAS
VMID
10 k
AURXM
AURXCP
20 k
S2D
+
1 k
Sigma-
Delta
ADC
PGA
TLV320AIC11
Anti-
Aliasing
Filter
Vref
AURXFP
Electret
Microphone
MIC_BIAS
VMID
1
F
20 k
10 k
AURXM
AURXCP
10 k
10 k
S2D
+
AVDD
1 k
10 k
0.1
F
(a) Inverting Configuration
(b) Noninverting Configuration
Figure 2–5. Typical Microphone Interface
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