DESCRIPTION

The UTC DPA5V3F is a differential class-D BTL power

amplifier. It can drive up to 2.2W into a 4Ω load and 1.4W into an

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 10ms. A

standby function (active low) enables the current consumption to

be reduced to 10nA typical.

FEATURES

* Operating from VCC=2.4V~5.5V

* Standby mode active low

* Low current consumption 2.5mA at 3V

* Adjustable gain via external resistors

* Output power: 2.8W into 4Ω and 1.7W into 8Ω with 10% THD+N maximum and 5 V power supply

* Output power: 2.2W at 5V or 0.7W at 3.0V into 4Ω with 1% THD+N maximum

* Output power: 1.4W at 5V or 0.5W at 3.0V into 8Ω with 1% THD+N maximum

* PWM base frequency: 330kHz

* Efficiency: 88% typical

* Signal to noise ratio: 85dB typical

* PSRR: 63dB typical at 217Hz with 6dB gain

* Low pop & click noise