TPA6135A2中文资料具有高阻态模式的 25mW 立体声模拟输入耳机放大器数据手册TI规格书

描述 Description

The TPA6135A2 (sometimes referred to as TPA6135) is a DirectPath™ stereo headphone amplifier that eliminates the need for external dc-blocking output capacitors. Differential stereo inputs and built-in resistors set the device gain, further reducing external component count. Gain is selectable at 0 dB or 6 dB. The amplifier drives 25 mW into 16speakers from a single 2.3 V supply. The TPA6135A2 (TPA6135) provides a constant maximum output power independent of the supply voltage, thus facilitating the design for prevention of acoustic shock.

The TPA6135A2 (TPA6135) features HI-Z mode which can set the outputs to a high impedance configuration. The fully differential inputs reduce system noise pickup between the audio source and the headphone amplifier. The high power supply noise rejection performance and differential architecture provide increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.

The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.

The TPA6135A2 (TPA6135) operates from a single 2.3 V to 5.5 V supply with 2.1 mA of typical supply current. Shutdown mode reduces supply current to less than 1 µA.

特性 Features

• Patented DirectPath™ Technology Eliminates Need for DC-Blocking Capacitors
• Excellent Low Frequency Fidelity
• Active Click and Pop Suppression
• 2.1 mA Typical Supply Current
• Built-In Resistors Reduces Component Count
• Constant Maximum Output Power from 2.3 V to 5.5 V Supply
• Improved RF Noise Immunity
• High Power Supply Noise Rejection
• 90 dB PSRR at 10 kHz
• Wide Power Supply Range: 2.3 V to 5.5 V
• Short-Circuit and Thermal-Overload Protection
• Small Package Available
• APPLICATIONS
• Notebook Computers
• Portable Gaming

DirectPath is a trademark of Texas Instruments. Windows Vista is a trademark of Microsoft Corporation.