ST TS4909IQT

AB 类耳机，2-通道（立体声）2.2V ~ 5.5V

Overview

The TS4909IQT is a stereo audio amplifier designed to drive headphones in portable applications. The integrated phantom ground is a circuit topology that eliminates the heavy output coupling capacitors. This is of primary importance in portable applications where space constraints are very high. A single-ended configuration is also available, offering even lower power consumption because the phantom ground can be switched off. Pop-and-click noise during switch-on and switch-off phases is eliminated by integrated circuitry.

Specially designed for applications requiring low power supplies, the TS4909IQT is capable of delivering 31 mW of continuous average power into a 32 Ω load with less than 1% THD+N from a 3 V power supply. Featuring an active low standby mode, the TS4909IQT reduces the supply current to only 10 nA (typ.). The TS4909IQT is unity gain stable and can be configured by external gain-setting resistors.

Features

Tape & Reel (TR) Package
10-VFDFN Exposed Pad package
10 pin count
TS4909 family
158mW kWh per hour

Surface Mount Mounting Type

Applications

There are a lot of STMicroelectronics
TS4909IQT audio amplifiers applications.

• Logarithmic and exponential operation circuits
• Multiplication and division circuits
• Precision measurement
• Power control
• Information processing
• Weak signal detection
• Signal amplification
• Signal filtering
• Signal operation
• Video and image computer boards