dac3555a Micronas, dac3555a Datasheet - Page 28

• Manufacturer Part Number: dac3555a
• Description: Stereo Audio Dac
• Manufacturer: Micronas

DAC 3555A
4. Applications
4.1. Line Output Details
Fig. 4–1: Use of FINL/R as Line Outputs
Table 4–1: Load at FINL/R when used as Line Output
4.2. Recommended Low-Pass Filters for Analog
FOUTL(R)
Fig. 4–1: 1st-order low-pass filter
Table 4–2: Attenuation of 1st-order low-pass filter
1)
28
FINL(R)
Filter Order
1st, 2nd, 3rd
R
C
R
Frequency
24 kHz
30 kHz
without deemphasis circuit
line
dec
in
Outputs
: Input resistance of amplifier
: Capacitive load according to e.g. cable,
R
:Resistor used for decoupling C
FINL(R) to achieve stability
amplifier
dec
1st-order
AVSS
for external amplifier
1)
C
15 k
line
R
680
FOPL(R)
dec
R
in
Gain
2.2 dB
3.0 dB
330 pF
15 k
-
line
R
> 10 k
in
from
FINL(R)
FOUTL(R)
Fig. 4–2: 2nd-order low-pass filter
Table 4–3: Attenuation of 2nd-order low-pass filter
FOUTL(R)
Fig. 4–3: 3rd-order low-pass filter
Table 4–4: Attenuation of 3rd-order low-pass filter
Frequency
24 kHz
30 kHz
Frequency
18 kHz
24 kHz
30 kHz
3rd-order
1.8 nF
7.5 k
2nd-order
1.0 nF
11 k
AVSS
7.5 k
AVSS
FOPL(R)
FOPL(R)
11 k
1.8 nF
PRELIMINARY DATA SHEET
7.5 k
Gain
Gain
0.17 dB
1.5 dB
3.0 dB
0.23 dB
3.00 dB
220 pF
-
-
120 pF
11 k
15 k
FINL(R)
FINL(R)
Micronas