MAX9709 Maxim Integrated Products, MAX9709 Datasheet - Page 10

• Manufacturer Part Number: MAX9709
• Description: 25W/50W Filterless Spread-Spectrum Stereo/Mono Class D Amplifier
• Manufacturer: Maxim Integrated Products

25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplifier
Figure 1. Typical Application and Functional Diagram in Stereo Mode
10
______________________________________________________________________________________
CHANNEL
CHANNEL
RIGHT
V
LEFT
DIGITAL
+
+
-
-
CONFIGURATION: TQFN STEREO MODE, SSM, INTERNAL OSCILLATOR, GAIN = 22dB, THERMAL SETTING = +120°C
( ) TQFP PACKAGE
*ADDITIONAL BULK CAPACITANCE
V
1µF
1µF
1µF
1µF
DIGITAL
13 (14)
14 (15)
17 (20)
16 (19)
27 (30)
26 (29)
30 (35)
28 (31)
29 (34)
18 (21)
15 (18)
31 (36)
35 (40)
FS1
FS2
SYNCIN
INL+
INL-
INR+
INR-
SHDN
MUTE
G2
G1
MONO
TH0
R
R
R
R
34 (39)
IN
IN
IN
IN
(25, 26)
22, 23
Typical Application Circuits/Functional Diagrams
TH1
V
GND
DIGITAL
CONTROL
CONTROL
0.1µF
33 (38)
TH2
GAIN
R
R
R
R
V
V
F
F
F
F
DD
DD
THERMAL SENSOR
25 (28)
V
V
BIAS
BIAS
MAX9709
(5–7, 42–44)
5–7, 36–38
MUX
PV
PV
DD
DD
47µF*
AND H-BRIDGE
AND H-BRIDGE
24 (27)
MODULATOR
MODULATOR
REGULATOR
PGND
CLASS D
CLASS D
CHARGE
PUMP
PV
PV
SS
2–4, 39–41, 49–50
(2–4, 45–47, 56–57)
DD
DD
C
0.47µF
SS
SYNCOUT
OUTR+
CPV
OUTL+
OUTR-
OUTL-
TEMP
C1N
C1P
REG
DD
53, 54 (61, 62)
51, 52 (59, 60)
47, 48 (53, 54)
45, 46 (51, 52)
10 (11)
9 (10)
8 (9)
19, 20, 21 (22, 23, 24)
32 (37)
11 (12)
V
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V
DIGITAL
DIGITAL
1µF
C2
C1
0.1µF
10kΩ
10kΩ
PV
C
0.01µF
REG
DD