MAX5406 MAXIM [Maxim Integrated Products], MAX5406 Datasheet - Page 18

• Manufacturer Part Number: MAX5406
• Description: Audio Processor with Pushbutton Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

Audio Processor with Pushbutton Interface
Figure 7. Bass/Treble Output Stage
Alternatively, the following formulas can be used to cal-
culate and design for the bass and treble turn-
over frequencies:
where R
Tables 3 and 4 show the effects of the external bass and
treble capacitance on the maximum output attentuation.
Table 3. Effect of Base Tone Control
Capacitor (C
Cut at 100Hz
18
C
T_
C
C
______________________________________________________________________________________
T_1
T_2
C
f
B_
TREBLE TURNOVER
0.00
0.47
1.80
2.20
2.70
3.30
4.70
6.80
8.20
B
BUFFER
INPUT
(nF)
is nominally 40kΩ (see Figure 7).
f
C
BASS TURNOVER
_SP
(
3.5kΩ
40kΩ
B
(
_) on Bass Boost/Bass
C
B_1
TREBLE POT
CUT (dB)
116kΩ
17kΩ
C
-11.79
-11.25
-11.05
-10.95
-10.85
-10.60
-10.57
-10.10
B_
)
-9.66
BASS POT
=
)
2π
C
=
TO BIAS
B_2
2π
×
3.5kΩ
40kΩ
(
R
×
T
R
+
B
1
1
R
×
B
BOOST (dB)
C
)
B
×
11.81
11.26
11.08
10.96
10.86
10.62
10.55
10.15
_
9.66
C
T
_
_OUT
Figure 8. Matrix Surround Configuration
Figure 9. Ambience Filter
Figure 10. Pseudostereo Filter
Table 4. Effect of Treble Tone Control
Capacitor (C
Cut at 10kHz
+1
+1
+1
C
T_
Open
0.47
1.80
2.20
2.70
3.30
4.70
6.80
8.20
LMR
LMR
LPR
(nF)
AMBIENCE
NETWORK
PSEUDOSTEREO
NETWORK
+2
T
_) on Treble Boost/Treble
CUT (dB)
-12.55
-12.89
-13.15
-13.33
-13.55
-13.59
-13.61
-13.79
AMBLI
AMBLI
-7.80
AMBLI
+1
+1
+1
AMBRI
AMBRI
AMBRI
BOOST (dB)
12.58
12.95
13.18
13.34
13.58
13.61
13.63
13.75
7.66
-1
-1
-1