參數(shù)資料
型號: TWL1101PFB
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: PLASTIC, TQFP-48
文件頁數(shù): 10/31頁
文件大?。?/td> 408K
代理商: TWL1101PFB
TWL1101
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS074A – MAY 1998 REVISED MARCH 1999
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
_
+
_
+
_
+
_
+
MIC1N
MIC1P
Ci
Microphone
Rmic
MBIAS
36 k
W
36 k
W
MICOUTP
MICOUTN
MICINP
MICINN
MICFBM
MICFBP
VBAP
26.6 k
W
66.8 k
W
66.8 k
W
26.6 k
W
C1
C2
C3
R1
C2
C3
C1
R2
R3
Component
Typical Value
R1
R2
R3
C1
C2
C3
Ci
10 k
W
500 k
W
180 k
W
0.1
F
0.1
F
12.3 nF
0.1
F
1 pF
Figure 5. Typical Microphone Interface
microphone mute function
Transmit channel muting provides 80-dB attenuation of input microphone signal. The micmute function can be
selected by setting bit 6 of the power control register through the serial control interface.
transmit channel gain control
The MIC AMP gain is changed along with the TX PGA block gain to perform the loud talker AGC function. The
total TX channel gain can vary from 24 dB to 10 dB assuming an externally set gain of 18 dB at MIC AMP2. The
AGC function can be controlled through the PCM interface or the I2C bus. The default total TX channel gain is
24 dB.
相關PDF資料
PDF描述
TWL1101PFBR SPECIALTY CONSUMER CIRCUIT, PQFP48
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