Datasheet MAX9700 (Maxim) - 5

MAX9700 1.2W, Low-EMI, Filterless, Class D Audio Amplifier
Typical Operating Characteristics (continued)
(VDD = 3.3V, SYNC = GND (SSM), TA = +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE vs. COMMON-MODE VOLTAGE EFFICIENCY vs. OUTPUT POWER EFFICIENCY vs. OUTPUT POWER
10 100 100 VDD = 3.3V R 90 90 L = 8Ω f = 1kHz MAX9700 toc10 MAX9700toc11 80 MAX9700toc12 80 POUT = 300mW R 70 70 L = 8Ω 1 DIFFERENTIAL INPUT RL = 8Ω RL = 4Ω RL = 4Ω 60 60 50 50 THD+N (%) 40 40 0.1 EFFICIENCY (%) EFFICIENCY (%) 30 30 20 20 10 VDD = 3.3V 10 VDD = 5V f = 1kHz f = 1kHz 0.01 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.3 0.6 0.9 1.2 1.5 0 0.5 1.0 1.5 2.0 2.5 3.0 COMMON-MODE VOLTAGE (V) OUTPUT POWER (W) OUTPUT POWER (W)
EFFICIENCY OUTPUT POWER vs. EFFICIENCY vs. SUPPLY VOLTAGE vs. SYNC INPUT FREQUENCY SUPPLY VOLTAGE
100 100 3.5 f = 1kHz 90 90 RL = 4Ω 3.0 THD+N = 10% 80 MAX9700 toc13 80 MAx9700 toc14 MAX9700toc15 R R L = 8Ω L = 4Ω 70 2.5 R THD+N = 1% L = 4Ω 70 60 60 2.0 RL = 8Ω 50 50 THD+N = 10% 40 40 1.5 EFFICIENCY (%) EFFICIENCY (%) 30 30 VDD = 3.3V OUTPUT POWER (W) 1.0 f = 1kHz 20 20 POUT = 300mW 0.5 R 10 f = 1kHz 10 R L = 8Ω L = 8Ω P THD+N = 1% OUT = MAX (THD+N = 1%) 0 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 800 1000 1200 1400 1600 1800 2000 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) SYNC FREQUENCY (kHz) SUPPLY VOLTAGE (V)
COMMON-MODE REJECTION RATIO POWER-SUPPLY REJECTION RATIO OUTPUT POWER vs. LOAD RESISTANCE vs. FREQUENCY vs. FREQUENCY
2000 0 0 f = 1kHz THD+N = 1% -10 INPUT REFERRED -10 OUTPUT REFERRED VIN = 200mVP-P INPUTS AC GROUNDED MAX9700toc16 1600 -20 MAX9700TOC17 -20 V MAX9700TOC18 DD = 3.3V VDD = 5V -30 -30 1200 -40 -40 -50 -50 800 CMRR (dB) -60 PSRR (dB) -60 OUTPUT POWER (mW) VDD = 3.3V -70 -70 400 -80 -80 -90 -90 0 -100 -100 0 10 20 30 40 50 60 70 80 90 100 10 100 1k 10k 100k 10 100 1k 10k 100k LOAD RESISTANCE (Ω) FREQUENCY (Hz) FREQUENCY (Hz) www.maximintegrated.com Maxim Integrated │ 5