STMicroelectronics A21SP16J
The A21SP16 is a differential class-D BTL power amplifier. It is able to drive up to 2.3 W into a 4 load and 1.4 W into a 8 load at 5 V. It achieves outstanding efficiency (88% typ.) compared to classical Class-AB audio amps.| Part No. | A21SP16J |
|---|---|
| Datasheet | A21SP16J Download |
| Manufacturer |  STMicroelectronics |
| Description | 3W filter-free class-D audio power amplifier |
| Buy | Stock & Price |
FEATURES
● Operating from VCC = 2.4 V to 5.5 V● Standby mode active low
● Output power: 3 W into 4 and 1.75 W into 8 with 10% THD+N max and 5 V power supply
● Output power: 2.3 W @ 5 V or 0.75 W @ 3 V into 4 with 1% THD+N max Datasheet - production data
● Output power: 1.4 W @ 5 V or 0.45 W @ 3 V into 8 with 1% THD+N max
● Adjustable gain via external resistors
● Low current consumption 2 mA @ 3 V
● Efficiency: 88% typ.
● Signal to noise ratio: 85 dB typ.
● PSRR: 63 dB typ. @ 217 Hz with 6 dB gain
● PWM base frequency: 250 kHz
● Low pop & click noise
● Thermal shutdown protection
● Available in flip-chip 9 x 300 m (Pb-free)
APPLICATIONS
● Wearable● Fitness and healthcare
● Cellular phone
● PDA
DESCRIPTION
It is able to drive up to 2.3 W into a 4 load and 1.4 W into a 8 load at 5 V. 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 5 ms.
