MAX9736
Mono/Stereo High-Power Class D Amplifier
Electrical Characteristics
(V
= 20V, V = 5V, V
= V
= 0V, V
= V
= V
= 5V, REGEN = MONO = AGND, C1 = 0.1μF, C2 = 1μF,
PVDD
VS
AGND
PGND
MOD
SHDN
MUTE
R
= 20kΩ and R
= 20kΩ, R = ∞, AC measurement bandwidth 22Hz to 22kHz, T = T
to T
, unless otherwise noted.
MAX
IN_
FB_
L
A
MIN
Typical values are at T = +25°C.) (Notes 4, 5)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AMPLIFIER DC CHARACTERISTICS
Speaker Supply Voltage Range
PVDD
Inferred from PSRR test
(Notes 1 and 7)
8
28
V
V
V
Preamplifier Supply Voltage
Range
VS
4.5
5.5
Undervoltage Lockout
UVLO
7
T
T
T
T
= +25°C
30
45
50
20
22
10
10
R = ∞, V
= 5V,
A
A
A
A
L
REGEN
I
mA
mA
µA
PVDD
V
= open
VS
= T
to T
MIN
MAX
MAX
Quiescent Supply Current
= +25°C
= T to T
14
1
R = ∞, V
= 0V,
L
REGEN
I
VS
V
= 5V
VS
MIN
I
I
PVDD
VS
Shutdown Supply Current
I
V = 0V
SHDN
SHDN
REG Voltage
V
4.2
4.8
V
V
V
REG
Preregulator Voltage
COM Voltage
VS
Internal regulated 5V, V = 5V
REGEN
V
1.9
2.05
2.2
COM
INPUT AMPLIFIER CHARACTERISTICS
Capacitive Drive
C
30
±2
88
±1
2.5
pF
V
L
Output Swing (Note 6)
Open-Loop Gain
Sinking ±1mA
A
V
V
= V
±500mV, R = 20kΩ to IN_
FB_
dB
VO
FB_
COM
Input Offset Voltage
Input Amplifier Slew Rate
mV
V/µs
OS
Input Amplifier Unity-Gain
Bandwidth
3.5
MHz
AMPLIFIER CHARACTERISTICS
MAX9736A, MAX9736D
MAX9736B
16.5
13.1
3.3
17
13.6
4.6
±2
17.5
14.1
Output Amplifier Gain (Note 8)
A
dB
V
Output Current Limit
Output Offset
A
V
OUT_+ to OUT_-, T = +25°C
±10
mV
OS
A
PVDD = 8V to 28V, T = +25°C
65
80
A
Power-Supply Rejection Ratio
PSRR
dB
f = 1kHz, 100mV
ripple
67
P-P
R = 8Ω
8
L
Stereo
V
= 12V
R = 4Ω
13
PVDD
L
Mono
Stereo
Mono
Stereo
Mono
R = 4Ω
15.5
13.5
27
L
MAX9736A Output Power
(THD+N = 1%)
P
R = 8Ω
L
W
OUT_1%
V
V
= 18V
= 24V
PVDD
R = 4Ω
L
R = 8Ω
13.5
27
L
PVDD
R = 4Ω
L
Maxim Integrated
│ 3
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