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| MAX9877 Datasheet, PDF (8/30 Pages) Maxim Integrated Products – Low RF Susceptibility, Mono Audio Subsystem with DirectDrive Headphone Amplifier | |||
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = PVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS =
0, SHDN = 1. Speaker loads (ZSPK) connected between OUT+ and OUT-. Headphone loads (RHP) connected from HPL or HPR to
GND. ZSPK = â, RHP = â. C1 = C2 = CBIAS = 1µF. TA = +25°C, unless otherwise noted.)
SPEAKER AMPLIFIER
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
VDD = PVDD = 3.7V
ZSPK = 8Ω + 68μH
1
POUT = 200mW
POUT = 675mW
0.1
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
VDD = PVDD = 3.7V
ZSPK = 4Ω + 33μH
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
1
POUT = 1100mW
0.1
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
VDD = PVDD = 3V
ZSPK = 8Ω + 68μH
1
POUT = 425mW
0.1
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
VDD = PVDD = 3V
ZSPK = 4Ω + 33μH
1
POUT = 650mW
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
1
VDD = PVDD = 3.7V
POUT = 200mW
ZSPK = 8Ω + 68μH
fOSC = 700kHz
POUT = 200mW
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = PVDD = 5V
ZSPK = 8Ω + 68μH
1
fIN = 6kHz
POUT = 700mW
0.1
0.1
fOSC = 1176kHz
fIN = 20Hz
0.1
POUT = 250mW
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
0.01
10
fOSC = 1100kHz
100
1k
10k
100k
FREQUENCY (Hz)
0.01
0
fIN = 1kHz
0.5
1.0
1.5
2.0
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = PVDD = 5V
ZSPK = 4Ω + 33μH
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
1
fIN = 20Hz fIN = 6kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = PVDD = 3.7V
ZSPK = 8Ω + 68μH
1
fIN = 20Hz
0.1
0.1
fIN = 6kHz
fIN = 1kHz
0.01
0
0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT POWER (W)
0.01
0
fIN = 1kHz
200 400 600 800 1000
OUTPUT POWER (mW)
8 _______________________________________________________________________________________
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