參數(shù)資料
型號: PCT789T-A
英文描述: PCI HSP56 World MicroModem/PCT303DW/PCT1789W
中文描述: 世界MicroModem/PCT303DW/PCT1789W的PCI HSP56
文件頁數(shù): 59/70頁
文件大?。?/td> 872K
代理商: PCT789T-A
PC-TEL, Inc.
59
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
D
IGITAL
F
ILTER
C
HARACTERISTICS
!
PRELIMINARY
PRELIMINARY
D
IGITAL
F
ILTER
C
HARACTERISTICS
Digital FIR Filter Characteristics
Given values are: V
A
= charge pump, V
D
= +3.3 V ± 5%; sample rate = 8 kHz; T
A
= 70 °C for K-grade, 85 °C for
B-grade.
Typical FIR filter characteristics for Fs = 8000Hz are shown in Figures 21, 22, 23, and 24.
Table 28 Digital FIR Filter Characteristics—Transmit and Receive
Digital IIR Filter Characteristics
Given values are: V
A
= charge pump, V
D
= +3.3 V ± 5%; sample rate = 8 kHz; T
A
= 70 °C for K-grade, 85 °C for
B-grade.
Typical IIR filter characteristics for Fs = 800 Hz are shown in Figures 25, 26, 27, and 28. Figures 29 and 30 show
group delay versus input frequency.
Table 29 Digital IIR Filter Characteristics—Transmit and Receive
Parameter
Passband (0.1dB)
Symbol
F
(0.1dB)
F
(3dB)
Min
0
Typ
Max
3.3
Unit
kHz
Passband (3dB)
0
3.6
kHz
Passband ripple peak-to-peak
Stopband
Stopband attenuation
Group delay
–0.1
0.1
dB
kHz
dB
sec
4.4
–74
t
gd
12/Fs
Parameter
Passband (3dB)
Symbol
F
(3dB)
Min
0
Typ
Max
3.6
Unit
kHz
Passband ripple peak-to-peak
Stopband
Stopband attenuation
Group delay
–0.2
0.2
dB
kHz
dB
sec
4.4
–40
t
gd
1.6/Fs
PCT303W
Tip
Ring
10 μF
600
Note:
The remainder of the circuit is identical to the one shown in the Application Diagram.
I
L
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