TS4962IQT STMicroelectronics

TS4962 2.8 W filter-free mono class D audio power amplifier Datasheet - production data Applications Cellular phones PDAs Notebook PCs )1 PP Description The TS4962 is a differential class-D BTL power amplifier. It can drive up to 2.2 W into a 4 load and 1.4 W into an 8 load at 5 V. It achieves 67%< 287 outstanding efficiency (88% typ.) compared to *1 1& H SR V G ( standard AB-class audio amps. SD G ,1 9&& The gain of the device can be controlled via two 287 external gain setting resistors. Pop and click ,1 reduction circuitry provides low on/off switch SLQRXW 76 ,47 noise while allowing the device to start within 5 ms. A standby function (active low) enables the current consumption to be reduced to 10 nA typical. Features Operating from V = 2.4 V to 5.5 V CC Standby mode active low Output power: 2.8 W into 4 and 1.7 W into 8 with 10% THD+N maximum and 5 V power supply Output power: 2.2 W at 5 V or 0.7 W at 3.0 V into 4 with 1% THD+N maximum Output power: 1.4 W at 5 V or 0.5 W at 3.0 V into 8 with 1% THD+N maximum Adjustable gain via external resistors Low current consumption 2 mA at 3 V Efficiency: 88% typical Signal to noise ratio: 85 dB typical PSRR: 63 dB typical at 217 Hz with 6 dB gain PWM base frequency: 280 kHz Low pop and click noise Available in DFN8 3 x 3 mm package March 2020 DocID10968 Rev 9 1/44 This is information on a product in full production. www.st.comContents TS4962 Contents 1 Absolute maximum ratings and operating conditions . 3 2 Application overview 5 3 Electrical characteristics . 7 3.1 Electrical characteristics curves 19 4 Application information . 30 4.1 Differential configuration principle 30 4.2 Gain in typical application schematic 30 4.3 Common-mode feedback loop limitations 31 4.4 Low frequency response . 31 4.5 Decoupling of the circuit 32 4.6 Wake-up time (t ) . 32 WU 4.7 Shutdown time (t ) . 32 STBY 4.8 Consumption in standby mode . 32 4.9 Single-ended input configuration . 33 4.10 Output filter considerations 34 4.11 Several examples with summed inputs 35 4.11.1 Example 1: dual differential inputs . 35 4.11.2 Example 2: one differential input plus one single-ended input 36 5 Demonstration board . 37 6 Recommended footprint . 39 7 Package information 40 8 Ordering information . 42 9 Revision history . 43 2/44 DocID10968 Rev 9