參數(shù)資料
型號： TPS65930BZCHR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA139
封裝： 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件頁數(shù)： 79/115頁
文件大小： 1232K
代理商： TPS65930BZCHR
SWCS037G
– MAY 2008 – REVISED APRIL 2011
Table 6-10. Uplink Characteristics (continued)
Parameter
Test Conditions
Min
Typ
Max
Unit
Peak-to-peak single-ended input voltage (0 dBFs)
For single-ended input
1.5
VPP
0 dB gain setting
Input impedance(2)
40k
70k
Total harmonic distortion (sine wave at 1.02 kHz)
At
–1 dBFs
–80
–75
dB
At
–6 dBFs
–74
–69
At
–10 dBFs
–70
–65
At
–20 dBFs
–60
–55
At
–60 dBFs
–20
–15
Idle channel noise
20 Hz to 20 kHz, A-weighted, gain = 0 dB
–85
–78
dBFs
16 kHz:
< 20 Hz to 7 kHz, gain = 0 dB
–90
8 kHz: P-weighted voice, gain = 18 dB
–87
16 kHz:
< 20 Hz to 7 kHz, gain = 18 dB
–82
Crosstalk A/D to D/A
Gain = 0 dB
–80
dB
Crosstalk path between two microphones
–70
dB
Intermodulation distortion
2-tone method
–60
dB
(2)
Impedance varies in the specified range with gain selection.
6.2.4
Microphone Amplification Stage
The microphone amplification stages perform the single-to-differential conversion for single-ended inputs.
Two programmable gains from 0 dB to 30 dB can be set:
Automatic level control for main microphone input. The gain step is 1 dB.
Level control by register for line-in or carkit input. The gain step is 6 dB.
The amplification stage outputs are connected to the ADC input (ADC left and right).
66
Audio/Voice Module (TPS65930 Device Only)
Copyright
2008–2011, Texas Instruments Incorporated
focus.ti.com: TPS65930/TPS65920
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