UAC 3552A
PRELIMINARY DATA SHEET
4. Applications
3rd-order
15 kΩ
4.1. Recommended Low-Pass Filters
for Analog Outputs 1)
120 pF
7.5 kΩ 7.5 kΩ 7.5 kΩ
1st-order
330 pF
1.8 nF
1.8 nF
AVSS
15 kΩ
15 kΩ
FOUTL(R)
FOPL(R)
FINL(R)
−
FOUTL(R)
FOPL(R)
FINL(R)
−
Fig. 4–3: 3rd-order low-pass filter
Fig. 4–1: 1st-order low-pass filter
Table 4–3: Attenuation of 3rd-order low-pass filter
Frequency
18 kHz
Gain
Table 4–1: Attenuation of 1st-order low-pass filter
0.17 dB
−0.23 dB
−3.00 dB
Frequency
24 kHz
Gain
24 kHz
−2.2 dB
−3.0 dB
30 kHz
30 kHz
11 kΩ
2nd-order
11 kΩ
11 kΩ
220 pF
1.0 nF
AVSS
FOUTL(R)
FOPL(R)
FINL(R)
−
Fig. 4–2: 2nd-order low-pass filter
Table 4–2: Attenuation of 2nd-order low-pass filter
Frequency
24 kHz
Gain
−1.5 dB
−3.0 dB
30 kHz
1) without deemphasis circuit
26
Micronas
MICRONAS [ MICRONAS ]
