PCT2303N DATA SHEET
DIGITAL FILTER CHARACTERISTICS
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DIGITAL FILTER CHARACTERISTICS
Digital FIR Filter Characteristics
Given values are: VA = charge pump, VD = +3.3 V ± 5%; sample rate = 8 kHz; TA = 70 °C for K-grade, 85 °C for B-grade.
Typical FIR filter characteristics for Fs = 8000Hz are shown in Figures 19, 20, 21, and 22.
Table 19 Digital FIR Filter Characteristics—Transmit and Receive
Parameter
Symbol
Min
Typ
Max
Unit
Passband (0.1dB)
F(0.1dB)
0
3.3
kHz
Passband (3dB)
F(3dB)
0
3.6
0.1
kHz
Passband ripple peak-to-peak
Stopband
–0.1
dB
kHz
dB
4.4
Stopband attenuation
Group delay
–74
tgd
12/Fs
sec
Digital IIR Filter Characteristics
Given values are: VA = charge pump, VD = +3.3 V ± 5%; sample rate = 8 kHz; TA = 70 °C for K-grade, 85 °C for B-grade.
Typical IIR filter characteristics for Fs = 8000 Hz are shown in Figures 23, 24, 25, and 26. Figures 27 and 28 show
group delay versus input frequency.
Table 20 Digital IIR Filter Characteristics—Transmit and Receive
Parameter
Symbol
Min
Typ
Max
Unit
Passband (3dB)
F(3dB)
0
3.6
kHz
Passband ripple peak-to-peak
Stopband
–0.2
0.2
dB
kHz
dB
4.4
Stopband attenuation
Group delay
–40
tgd
1.6/Fs
sec
Tip
600 W
PCT303L
Ring
IL
10 µF
Note: The remainder of the circuit is identical to the one shown in the Application Program.
Figure 18 Test Circuit For Loop Characteristics
PC-TEL, Inc.
34
2303N0DOCDAT10A-0899
ETC [ ETC ]
