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TFA9881UK

3.4 W PDM input class-D audio amplifier; \n\nSmall outline WLCSP9 package: 1.3 × 1.3 × 0.6 mm\n\nWide supply voltage range (fully operational from 2.5 V to 5.5 V)\n\nHigh efficiency (90 %, 4 ?/20 μH load) and low power dissipation\n\nQuiescent power:\n6.5 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 ?/20 μH load, fclk = 2.048 MHz)\n\n7.8 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 ?/20 μH load, fclk = 6.144 MHz)\n\n\n\n\nOutput power:\n1.4 W into 4 ? at 3.6 V supply (THD = 1 %)\n\n2.7 W into 4 ? at 5.0 V supply (THD = 1 %)\n\n3.4 W into 4 ? at 5.0 V supply (THD = 10 %)\n\n\n\n\nOutput noise voltage: 24 μV (A-weighted)\n\nSignal-to-noise ratio: 103 dB (VDDP = 5 V, A-weighted)\n\nFully short-circuit proof across load and to supply lines\n\nCurrent limiting to avoid audio holes\n\nThermally protected\n\nUndervoltage and overvoltage protection\n\nHigh-pass filter for DC blocking\n\nInvalid data protection\n\nSimple two-wire interface for audio and control settings\n\nLeft/right selection\n\nThree gain settings: -3 dB, 0 dB and +3 dB\n\nPWM output slope setting for EMI reduction\n\nBandwidth extension to support low sampling frequencies\n\nClip control for smooth clipping\n\nMute mode\n\n‘Pop noise' free at all mode transitions\n\nShort power-up time: 2 ms\n\nShort power-down time: 5 μs\n\n1.8 V/3.3 V tolerant digital inputs\n\nLow RF susceptibility\n\nInsensitive to input clock jitter\n\nOnly two external components required\n\n\n;

Overview \nThe TFA9881 is a mono, filter-free class-D audio amplifier in a 9-bump WLCSP (Wafer Level Chip-Size Package) with a 400 μm pitch.\n\nThe digital input interface is an over-sampled Pulse Density Modulated (PDM) bit stream. The TFA9881 receives audio and control settings via this interface. Dedicated silence patterns are used to configure the control settings of the device, such as mute, gain, Pulse Width Modulated (PWM) output slope, clip control and bandwidth extension (this control mechanism is not required if the default settings are used). The Power-down to Operating mode transition is triggered when a clock signal is detected.\n\nThe device features low RF susceptibility because it has a digital input interface that is insensitive to clock jitter. The second order closed loop architecture used in the TFA9881 provides excellent audio performance and high supply voltage ripple rejection.\n\n

恩XP

TFA9881UK

3.4 W PDM input class-D audio amplifier

ETC

DAC9881

18-Bit,Single-Channel,Low-Noise,Voltage-OutputDIGITAL-TO-ANALOGCONVERTER

DAC9881

18-Bit,Single-Channel,Low-Noise,Voltage-OutputDIGITAL-TO-ANALOGCONVERTER

DAC9881

18-Bit,Single-Channel,Low-Noise,Voltage-OutputDIGITAL-TO-ANALOGCONVERTER