max5406eumt Maxim Integrated Products, Inc., max5406eumt Datasheet - Page 18
max5406eumt
Manufacturer Part Number
max5406eumt
Description
Max5406 Audio Processor With Pushbutton Interface
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX5406EUMT.pdf
(26 pages)
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