NCP2991中文资料Audio Power Amplifier, Class AB, 1.35 W, with Selectable Fast Turn-On Time数据手册ONSEMI规格书

描述 Description

The NCP2991 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The NCP2991 is capable of delivering 1.35 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 NCP2991 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 NCP2991 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 (Lead-Free).

特性 Features

• 1.35 W to an 8.0Ω BTL load from a 5.0 V power supply
• Best-in-Class PSRR: up to -100 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

应用 Application

Audio amplification

简介

NCP2991属于开发板套件编程器的评估板-音频放大器。由制造生产的NCP2991评估板 - 音频放大器音频放大器评估板是带有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了模拟放大器实例。放大器类型包括 AB 类、D 类、G 类、H 类和 K 类，输出为耳机、1 声道（单声道）、2 声道（立体声）、3 声道、4 声道、6 声道和 8 声道。