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參數資料
型號: TPS65950ZXNR
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: 148/167頁
文件大小: 2566K
代理商: TPS65950ZXNR
6.1.9.2 Voice Downlink Filter (Sampling Frequency at 16 kHz)
–3
–2.5
–2
–1.5
–1
–0.5
0
0.5
1
1.5
2
0
1000
2000
3000
4000
5000
6000
7000
Rx_8K_1st_HPF
Rx_8K_3rd_HPF
Specification
Frequency(Hz)
VoiceDownlink(RX)Filter16kHz
032-031
Gain(dB)
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Table 6-12. Digital Voice Filter RX Electrical Characteristics With FS = 8 kHz
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
Frequency response relative to reference gain at 1 kHz (first-order 100 Hz
–20
dB
HPF)
200 Hz
–8
–0.5
300 to 3300 Hz
–0.5
0
0.5
3400 Hz
–1.5
0
0.1
4000 Hz
–17
4600 Hz
–40
> 6000 Hz
–45
Pole when third-order HPF is disabled (first-order HPF)
2.5
Hz
Group delay
0.5
ms
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Figure 6-18 shows the voice downlink frequency response with FS = 16 kHz. Table 6-13 lists the voice
filter frequency responses relative to the reference gain at 1 kHz with FS = 16 kHz.
Figure 6-18. Voice Downlink Frequency Response With FS = 16 kHz
Table 6-13. Digital Voice Filter RX Electrical Characteristics With FS = 16 kHz
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
Frequency response relative to reference gain at 1 kHz (first-order
300 to 6600 Hz
–0.5
0
0.5
dB
HPF)
6800 Hz
–1.5
0
0.1
8000 Hz
–17
9200 Hz
–40
> 12000 Hz
–45
Pole when third-order HPF is disabled (first-order HPF)
5
Hz
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Audio/Voice Module
81
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