max9712eub Maxim Integrated Products, Inc., max9712eub Datasheet - Page 3

• Manufacturer Part Number: max9712eub
• Description: Max9712 500mw, Low Emi, Filterless, Class D Audio Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(V
T
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For R
Note 3: PSRR is specified with the amplifier inputs connected to GND through C
(V
Signal-to-Noise Ratio
Oscillator Frequency
SYNC Frequency Lock Range
Efficiency
DIGITAL INPUTS (SHDN, SYNC)
Input Thresholds
SHDN Input Leakage Current
SYNC Input Current
MIN
DD
DD
0.001
0.01
to T
= PV
= 3.3V, V
0.1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
For R
10
MAX
V
R
DD
PARAMETER
DD
L
= 8Ω
, unless otherwise noted. Typical values are at T
= +5V
L
= SHDN = 3.3V, GND = PGND = 0V, SYNC = GND (FFM), R
SYNC
= 8Ω, L = 68µH. For R
P
100
OUT
P
vs. FREQUENCY
OUT
= 300mW
FREQUENCY (Hz)
= GND, T
_______________________________________________________________________________________
= 125mW
1k
A
= +25°C, unless otherwise noted.)
10k
SYMBOL
L
= 16Ω, L = 136µH.
f
SNR
OSC
100k
0.001
V
SYNC = GND
SYNC = float
SYNC = V
P
V
V
0.01
OUT
OUT
IH
IL
0.1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
10
500mW, Low EMI, Filterless,
= 1.8V
= 300mW, f
V
R
DD
L
= 8Ω
= +3.3V
DD
A
100
P
RMS
OUT
= +25°C.) (Notes 1, 2)
(SSM mode)
vs. FREQUENCY
CONDITIONS
FREQUENCY (Hz)
= 300mW
IN
Class D Audio Amplifier
= 1kHz
1k
P
Typical Operating Characteristics
OUT
BW = 22Hz
to 22kHz
A-weighted
= 125mW
L
10k
= 8Ω, R
IN
.
FFM
SSM
FFM
SSM
100k
L
connected between OUT+ and OUT-, T
0.001
0.01
0.1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
1280
MIN
980
800
10
2
V
R
P
DD
L
OUT
= 8Ω
= +3.3V
= 125mW
100
SSM MODE
FFM MODE
1100
1450
1220
TYP
88
86
91
89
120
85
vs. FREQUENCY
FREQUENCY (Hz)
L
1k
= 6Ω, L = 47µH.
MAX
1220
1620
2000
0.8
1
5
10k
UNITS
kHz
kHz
dB
µA
µA
%
V
A
100k
3
=