TS4962_07 Datasheet, PDF (1/46 Pages) STMicroelectronics – 2.8W filter-free mono class D audio power amplifier

TS4962
2.8W filter-free mono class D audio power amplifier
Features
■ Operating from V_CC=2.4V to 5.5V
■ Standby mode active low
■ Output power: 2.8W into 4Ω and 1.7W into 8Ω
with 10% THD+N max and 5V power supply
■ Output power: 2.2W @5V or 0.7W @ 3.0V into
4Ω with 1% THD+N max.
■ Output power: 1.4W @5V or 0.5W @ 3.0V into
8Ω 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: 280kHz
■ Low pop & click noise
■ Thermal shutdown protection
■ Available in DFN8 3X3 mm package
Description
The TS4962 is a differential class-D BTL power
amplifier. It is able to drive up to 2.2W into a 4Ω
load and 1.4W into a 8Ω load at 5V. It achieves
outstanding efficiency (88% typ.) compared to
standard AB-class 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.
DFN8 3x3 mm
TS4962IQT - Pinout
Applications
■ Cellular phone
■ PDA
■ Notebook PC
January 2007
Rev 7
1/46
www.st.com
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