MAX9730 Maxim Integrated Products, MAX9730 Datasheet - Page 3

• Manufacturer Part Number: MAX9730
• Description: Class G Power Amplifier
• Manufacturer: Maxim Integrated Products

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ELECTRICAL CHARACTERISTICS (continued)
(V
10µF; speaker load resistors (R
wise noted. Typical values are at T
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Voltage Gain
Continuous Output Power
Output Voltage
Power-Supply Rejection Ratio
(Note 4)
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Dynamic Range
CC
= CPV
2.4W, Single-Supply, Class G Power Amplifier
All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Testing performed with resistive and inductive loads to simulate an actual speaker load. For dynamic speakers,
R
Designed for 1.8V logic.
R
Amplifier inputs AC-coupled to GND.
Testing performed at room temperature with 8Ω resistive load in series with 68µH inductive load connected across BTL
output for speaker amplifier. Mode transitions are controlled by SHDN. V
Voltage gain is defined as: [V
Mode A tone burst tested at full amplitude for one cycle and half amplitude for nine cycles. Mode B tone burst tested at
full amplitude for three cycles and half amplitude for seven cycles. Full amplitude is defined as 1% THD+N at full battery
(V
5% for three cycles (Mode B).
Dynamic range is calculated by measuring the RMS voltage difference between a -60dBFS output signal and the noise
floor, then adding 60dB. Full scale is defined as the output signal needed to achieve 1% THD+N.
PARAMETER
L
IN_
DD
CC
= 8Ω, 68µH.
and R
= SHDN = 3.6V, GND = CPGND = 0V, R
= 4.2V). Electrical Characteristics
_______________________________________________________________________________________
FB_
have 0.5% tolerance.
L
) are terminated between OUT+ and OUT-, unless otherwise stated; T
A
= +25°C.) (Notes 1, 2)
SYMBOL
THD+N
PSRR
P
V
OUT+
SNR
DR
A
OUT
OUT
V
- V
OUT-
(Notes 4, 7)
THD+N = 1%, f = 1kHz,
R
f = 1kHz, 1% THD+N,
Z
f = 10kHz, 1% THD+N,
Z
load
V
f = 217Hz, 200mV
f = 1kHz, 200mV
f = 20kHz, 200mV
R
R
V
A-weighted
(Note 9)
table
L
L
L
CC
L
L
OUT
= 1µF + 10Ω
= 1µF + 10Ω, no
= 8Ω
= 8Ω, V
= 8Ω, V
] / [V
= 2.7V to 5.5V
= 0.5W, inputs to GND by C1N,
targets must be met at THD+N = 1% for one cycle (Mode A) and THD+N <
IN+
IN+
OUT
OUT
- V
= R
IN-
CONDITIONS
= 1kHz / 400mW
= 1kHz / 1W
IN-
P-P
].
P-P
P-P
= 10kΩ, R
ripple
ripple
ripple
V
V
V
V
V
V
V
V
V
V
V
V
22Hz to 22kHz
A-weighted
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
FB+
= 5V
= 4.2V
= 3.6V
= 3.0V
= 5V
= 4.2V
= 3.6V
= 3.0V
= 5V
= 4.2V
= 3.6V
= 3.0V
CP
= R
is the peak output transient expressed in dBV.
FB-
= 10kΩ, R
MIN
11.5
63
FS
A
= T
= 100kΩ, C1 = 4.7µF, C2 =
0.007
TYP
1.67
1.25
0.12
MIN
2.4
0.8
7.1
5.9
5.1
4.2
6.5
5.4
4.7
3.8
12
77
77
77
58
95
96
99
to T
MAX
MAX
12.5
, unless other-
UNITS
V
dB
dB
dB
dB
RMS
W
%
3