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MAX9796EBX+TG45

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
10 ______________________________________________________________________________________
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9796 toc28
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 3.3V
R
L
= 16Ω
P
OUT
= 20mW
P
OUT
= 40mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9796 toc29
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 3.3V
R
L
= 32Ω
P
OUT
= 10mW
P
OUT
= 40mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9796 toc30
OUTPUT POWER (mW)
THD+N (%)
604020
0.01
0.1
1
10
100
0.001
080
V
DD
= 5V
R
L
= 32Ω
f = 10kHz
f = 20Hz
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
OUTPUT POWER (mW)
THD+N (%)
MAX9796 toc31
0 306090120
0.001
0.01
0.1
1
10
100
f = 20Hz
f = 1kHz
f = 10kHz
V
DD
= 3.3V
R
L
= 16Ω
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9796 toc32
OUTPUT POWER (mW)
THD+N (%)
604020
0.01
0.1
1
10
100
0.001
080
V
DD
= 3.3V
R
L
= 32Ω
f = 10kHz
f = 20Hz
f = 1kHz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
COMMON-MODE VOLTAGE (V)
THD+N (%)
MAX9796 toc33
0 0.5 1.0 1.5 2.0 2.5
0.001
0.01
0.1
1
10
100
V
DD
= 3.3V
f
IN
= 1kHz
P
OUT
= 30mW
GAIN = +3dB
R
L
= 32Ω
POWER DISSIPATION
vs. OUTPUT POWER
MAX9796 toc34
TOTAL OUTPUT POWER (mW)
POWER DISSIPATION (mW)
8040
50
100
150
200
250
300
350
400
450
500
0
0 120
V
DD
= 5V
f = 1kHz
R
L
= 32Ω
P
OUT
= P
OUTR
+ P
OUTL
POWER DISSIPATION
vs. OUTPUT POWER
MAX9796 toc35
TOTAL OUTPUT POWER (mW)
POWER DISSIPATION (mW)
1208040
50
100
150
200
250
300
350
400
450
500
0
0160
V
DD
= 3.3V
f = 1kHz
P
OUT
= P
OUTR
+ P
OUTL
R
L
= 16Ω
R
L
= 32Ω
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9796 toc36
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
5.24.74.23.73.2
35
40
45
50
55
60
65
30
2.7
THD+N = 10%
THD+N = 1%
R
L
= 32Ω
f = 1kHz
Typical Operating Characteristics (continued)
(V
DD
= PV
DD
= CPV
DD
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
DD
, I
2
C settings (INA gain = +20dB, INB gain = INC gain =
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). C1 = C2 = C3 = 1µF. Speaker load resistors (R
LSP
) are ter-
minated between OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted.)
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
______________________________________________________________________________________
11
OUTPUT POWER
vs. LOAD
MAX9796 toc37
LOAD (Ω)
OUTPUT POWER (mW)
100
20
40
60
80
100
120
140
160
180
200
0
10 1000
THD+N = 10%
THD+N = 1%
V
DD
= 5V
f = 1kHz
OUTPUT POWER
vs. LOAD
MAX9796 toc38
LOAD (Ω)
OUTPUT POWER (mW)
100
20
40
60
80
100
120
140
160
180
200
0
10 1000
THD+N = 10%
THD+N = 1%
V
DD
= 3.3V
f = 1kHz
OUTPUT POWER vs. LOAD RESISTANCE
AND CHARGE-PUMP CAPACITOR SIZE
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
MAX9796 toc39
0
20
40
60
80
100
10 100 1000
C1 = C2 = 2.2μF
V
DD
= 3.3V
f
= 1kHz
THD+N = 1%
C1 = C2 = 1μF
C1 = C2 = 0.68μF
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO (dB)
MAX9796 toc40
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1k 10k 100k
HPL
HPR
V
DD
= 3.3V
V
IN
= 100mV
P-P
R
L
= 32Ω
OUTPUT FREQUENCY SPECTRUM
MAX9796 toc41
FREQUENCY (Hz)
OUTPUT MAGNITUDE (dBV)
15k10k5k
-120
-100
-80
-60
-40
-20
0
20
-140
020k
V
DD
= 3.3V
f
= 1kHz
R
L
= 32Ω
CROSSTALK vs. FREQUENCY
FREQUENCY (Hz)
CROSSTALK (dB)
MAX9796 toc42
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1k 10k 100k
OUT_ = 1V
P-P
R
L
= 32Ω
LEFT TO RIGHT
RIGHT TO LEFT
CROSSTALK vs. INPUT AMPLITUDE
INPUT AMPLITUDE (V
RMS
)
CROSSTALK (dB)
MAX9796 toc43
0 0.4 0.8 1.2
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
f
IN
= 1kHz
R
L
= 32Ω
GAIN = +3dB
LEFT TO RIGHT
RIGHT TO LEFT
Typical Operating Characteristics (continued)
(V
DD
= PV
DD
= CPV
DD
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
DD
, I
2
C settings (INA gain = +20dB, INB gain = INC gain =
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). C1 = C2 = C3 = 1µF. Speaker load resistors (R
LSP
) are ter-
minated between OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted.)
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
12 ______________________________________________________________________________________
Pin Description
BUMP NAME FUNCTION
A1 CPV
DD
Charge-Pump Power Supply
A2 C1P Charge-Pump Flying Capacitor Positive Terminal
A3 CPGND Charge-Pump GND
A4 C1N Charge-Pump Flying Capacitor Negative Terminal
A5 CPV
SS
Charge-Pump Output. Connect to V
SS
.
A6 HPL Left Headphone Output
B1, F1, F5 PV
DD
Class D Power Supply
B2, E6 I.C.
Internal Connection. Leave unconnected. This pin is internally connected to the signal path. Do not
connect together or to any other pin.
B3 VBIAS Common-Mode Bias
B4 INC1 Input C1. Left input or positive input (see Table 5a).
B5 V
SS
Headphone Amplifier Negative Power Supply. Connect to CPV
SS
.
B6 HPR Right Headphone Output
C1, F4 OUT+ Positive Speaker Output
C2 SDA Serial Data Input. Connect a 1kΩ pullup resistor from SDA to V
DD
.
C5 INC2 Input C2. Right input or negative input (see Table 5a).
C6 OUTRx Mono Receiver Output
D1, F3 PGND Power Ground
D2 SCL Serial Clock Input. Connect a 1kΩ pullup resistor from SCL to V
DD
.
D5 INB2 Input B2. Right input or negative input (see Table 5a).
D6 V
DD
Analog Power Supply
E1, F2 OUT- Negative Speaker Output
E2 SHDN Active-Low Hardware Shutdown
E3 INA1 Input A1. Left input or positive input (see Table 5a).
E4 INA2 Input A2. Right input or negative input (see Table 5a).
E5 INB1 Input B1. Left input or positive input (see Table 5a).
F6 GND Analog Ground
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MAX9796EBX+TG45

Mfr. #:
Buy MAX9796EBX+TG45
Manufacturer:
Maxim Integrated
Description:
IC AMP AUDIO 2.3W MONO D 36UCSP
Lifecycle:
New from this manufacturer.
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