SD4809

Key parameters

Description

Audio power amplifier with shutdown function

Operating voltage range

2.0V~5.5V

Output power (THD + N = 10%)

~

Output power (THD + N = 1%)

2×140mW/16Ω 5.0V

Number of Channels

2

Control terminal

Y

Package

MSOP8/SOP8

Overview

SD4809 is a low-power stereo audio power amplifier. With a 5V supply, a 16Ω load, and 0.1% distortion, it provides 105mW per channel. Its internally compensated circuit reduces the number of external components. SD4809 requires no input coupling capacitor or bootstrap capacitor, making it highly suitable for low-power portable systems. SD4809 features external shutdown control, active-low enable, micro-power shutdown mode, and internal thermal protection. Features: • Low-power shutdown mode • Pop-and-click suppression circuit • MSOP and SOP surface-mount packages • Stable gain • With a 32Ω load, 70mW output power, and a 1kHz signal, THD is 0.1% (typ) • Shutdown current: 0.4μA (typ) Applications: • Power amplifiers • Portable radios • Microphone preamplifiers • Portable audio equipment.

Applications

• Power amplifiers
• Portable radios
• Microphone preamplifiers
• Portable audio equipment