MAX9715(2005) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX9715 Datasheet PDF : 14 Pages
| |||
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VDD = PVDD = 5.0V, GND = PGND = 0V, VSHDN = VDD, CBIAS = 1µF, speaker impedance = 8Ω in series with 68µH connected between
OUT_+ and OUT_-, GAIN = +10.5dB, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Spread-Spectrum Modulation
±120
kHz
Crosstalk
Channel-to-channel, f = 10kHz, POUT = 1W,
72
dB
left to right or right to left
Click-and-Pop Level
Peak voltage,
Into shutdown
KCP
A-weighted,
32 samples per
second (Note 4)
Out of shutdown
-64
dBV
-46
Efficiency
η
RL = 8Ω in series with 68µH, POUT = 1W
per channel, f = 1kHz
86
%
DIGITAL INPUTS (GAIN and SHDN)
Input High Voltage
VIH
Input Low Voltage
VIL
Input Leakage Current
ILEAK
SHDN
GAIN
2.0
V
0.8
V
±1
µA
±1.5
Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.
Note 2: Speaker amplifier gain is defined as AV = (VOUT_+ - VOUT_-) / VIN.
Note 3: Click-and-pop level testing performed with an 8Ω resistive load in series with 68µH inductive load connected across the
Class D BTL outputs. Mode transitions are controlled by the SHDN pin. Inputs AC-coupled to GND.
Note 4: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4Ω, L = 33µH.
For RL = 8Ω, L = 68µH.
Typical Operating Characteristics
(VDD = 5.0V, CVDD = 3 x 0.1µF, CBIAS = 1µF, CINL = CINR = 1µF, AV = +10.5dB, TA = +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
VDD = 5V
RL = 4Ω
POUT = 0.35W
0.1
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
VDD = 5V
RL = 8Ω
POUT = 0.5W
0.1
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
10
fIN = 1kHz AND 20Hz
1
0.01
0.001
10
POUT = 2W
0.01
100
1k
0.001
10k
100k
10
FREQUENCY (Hz)
POUT = 1.25W
0.1
fIN = 10kHz
0.01
100
1k
VDD = 5V
0.001
RL = 4Ω
10k
100k
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
FREQUENCY (Hz)
OUTPUT POWER (W)
_______________________________________________________________________________________ 3
Share Link: 