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TS4962M bảng dữ liệu(PDF) 1 Page - STMicroelectronics |
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TS4962M bảng dữ liệu(HTML) 1 Page - STMicroelectronics |
1 / 41 page January 2007 Rev 4 1/41 41 TS4962M 3W filter-free class D audio power amplifier Features ■ Operating from VCC = 2.4V to 5.5V ■ Standby mode active low ■ Output power: 3W into 4 Ω and 1.75W into 8Ω with 10% THD+N max and 5V power supply. ■ Output power: 2.3W @5V or 0.75W @ 3.0V into 4 Ω with 1% THD+N max. ■ Output power: 1.4W @5V or 0.45W @ 3.0V into 8 Ω with 1% THD+N max. ■ Adjustable gain via external resistors ■ Low current consumption 2mA @ 3V ■ Efficiency: 88% typ. ■ Signal to noise ratio: 85dB typ. ■ PSRR: 63dB typ. @217Hz with 6dB gain ■ PWM base frequency: 250kHz ■ Low pop & click noise ■ Thermal shutdown protection ■ Available in flip-chip 9 x 300 μm (Pb-free) Description The TS4962M is a differential Class-D BTL power amplifier. It is able to drive up to 2.3W into a 4 Ω load and 1.4W into a 8 Ω load at 5V. It achieves outstanding efficiency (88%typ.) compared to classical Class-AB audio amps. The gain of the device can be controlled via two external gain-setting resistors. Pop & click reduction circuitry provides low on/off switch noise while allowing the device to start within 5ms. A standby function (active low) allows the reduction of current consumption to 10nA typ. Applications ■ Cellular phone ■ PDA ■ Notebook PC Block diagram In- Stdby In+ Out- Out+ Vcc C2 C1 A1 A2 A3 B1 B2 B3 C3 GND Internal Bias PWM Output Bridge H Oscillator 150k 150k + - V DD 1/A1 7/C1 8/C2 9/C3 4/B1 6/B3 2/A2 3/A3 5/B2 V DD IN - IN + GND STBY GND OUT + OUT - V DD 1/A1 7/C1 8/C2 9/C3 4/B1 6/B3 2/A2 3/A3 5/B2 V DD IN - IN + GND STBY GND OUT + OUT - IN+: positive differential input IN-: negative differential input VDD: analog power supply GND: power supply ground STBY: standby pin (active low) OUT+: positive differential output OUT-: negative differential output Pin connections www.st.com |
Số phần tương tự - TS4962M_07 |
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Mô tả tương tự - TS4962M_07 |
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