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參數資料
型號: TPS65950ZXNT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數: 152/167頁
文件大小: 2566K
代理商: TPS65950ZXNT
6.2.1.1 Analog Microphone Bias Module Characteristics
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Table 6-16 lists the characteristics of the analog microphone bias module.
Table 6-16. Analog Microphone Bias Module Characteristics
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
Bias voltage
2.2
V
Load current
1
mA
Output noise
P-weighted 20 Hz to 6.6 kHz
1.8
V
RMS
External capacitor
0
200
pF
Internal resistance
50
60
70
k
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
NOTE
If the value of the external capacitor is greater than 200 pF, the analog microphone bias
becomes unstable. To stabilize it, a serial resistor must be added.
Table 6-17 lists the characteristics of the analog microphone bias module with a bias resistor.
Table 6-17. Characteristics of Analog Microphone Bias Module With Bias Resistor
Parameter
Test Conditions
Min(1)
Typ(2) Max(3)
Unit
CB < 200 pF
0
RSB
CB = 100 pF
300
CB = 1 F
500
RB + RSB
2.2 to 2.7
k
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Audio/Voice Module
85
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