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Audio Power Amplifiers | NCP2993
Audio Power Amplifier, 1.3 W, with Selectable Fast Turn-On Time
Obsolete
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The NCP2993 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The NCP2991 is capable of delivering 1.3 W of continuous average power to an 8.0 Ω BTL load from a 5.0 V power supply, and 1.1 W to a 4.0 Ω BTL load from 3.6V power supply. The NCP2991 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power consumption shutdown mode, which is achieved by driving the /SD pin with logic low. The NCP2993 contains circuitry to prevent from pop and click noise that would otherwise occur during turn-on and turn-off transitions. It is a zero pop noise device when a single ended or a differential audio input is used. For maximum flexibility, the NCP2993 provides an externally controlled gain (with resistors). In addition, it integrates 2 differents Turn On times (15 ms or 30ms) adjustable with the TON pin. Due to its best-in-class PSRR, it can be directly connected to the battery, saving the use of an LDO. This device is available in a 9-Pin Flip-Chip CSP package with a 0.4 mm pitch (Lead-Free).
- Audio amplification
- Mobile phone
- 1.3 W to an 8.0 BTL load from a 5.0 V power supply
- Best-in-Class PSRR: up to -90 dB
- Zero pop noise signature with single-ended or differential audio input
- External turn-on time configuration capability: 15 ms or 30 ms
- Ultra-low current shutdown mode: 10 nA
- 2.5 V-5.5 V operation
- External gain configuration capability
- Thermal overload protection circuitry
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