Si3038
Table 14. Digital FIR Filter Characteristics—Transmit and Receive
(VD = 3.0 to 3.6 V, VA = Charge Pump, Sample Rate = 8 kHz, TA = 70°C)
Parameter
Symbol
Min
Typ
Passband (0.1 dB)
Passband (3 dB)
Passband Ripple Peak-to-Peak
F(0.1 dB)
0
—
F(3 dB)
0
—
–0.1
—
Stopband
—
4.4
Stopband Attenuation
–74
—
Group Delay
tgd
—
12/Fs
Note: Typical FIR filter characteristics for Fs = 8000 Hz are shown in Figures 9, 10, 11, and 12.
Max
3.3
3.6
0.1
—
—
—
Unit
kHz
kHz
dB
kHz
dB
sec
Table 15. Digital IIR Filter Characteristics—Transmit and Receive
(VD = 3.0 to 3.6 V, VA = Charge Pump, Sample Rate = 8 kHz, TA = 70°C)
Parameter
Symbol
Min
Typ
Max
Unit
Passband (3 dB)
Passband Ripple Peak-to-Peak
F(3 dB)
0
—
–0.2
—
3.6
kHz
0.2
dB
Stopband
—
4.4
—
kHz
Stopband Attenuation
–40
—
—
dB
Group Delay
tgd
—
1.6/Fs
—
sec
Note: Typical IIR filter characteristics for Fs = 8000 Hz are shown in Figures 13, 14, 15, and 16. Figures 17 and 18 show
group delay versus input frequency.
12
Rev. 2.01