Audio Line Driver


PT3323

The PT3323 is a 2-VRMS pop-free audio line driver with single power supply, which is designed to remove the output dc-blocking capacitors and reduce component numbers and cost. With 3.3V supply voltage, it is capable of driving 2 VRMS into a 10kΩ load. Meanwhile, the device has differential inputs and uses external gain setting resistors that supports a gain range of ±1V/V to ±10V/V.

Compared the traditional methods, the PT3323 doesn't require either a power supply more than 3.3V, or a split rail power supply to generate a 5.6Vpp output. The PT3323 contains a charge pump that generates a negative supply rail, so it supports a clean ground-biased 2-VRMS output. Furthermore, the PT3323 offers a built-in under voltage detector and mute control circuitry for optimal pop-free performance.

FEATURES


● Differential Input and Single-Ended Output

● Output 2-VRMS pop-free audio line driver at 10 KΩ load with 3.3V power supply

● Low Distortion

- Low THD+N, < 0.01% (at 2 VRMS Into 10 KΩ)

- High SNR, > 90 dB

- Low Vn, < 11μVrms

● Low DC Offset, < 1.5mV

● No output DC-Blocking capacitors

● Adjustable Gain can be achieved by adjusting the external gain resistance

● Built-in pop and click suppression

● Over current protection

● Package Type - TSSOP 14

APPLICATIONS


● Set-Top Box

● LCD TV or Monitor

● Laptop or MID

● Portable DVD

資源下載

Documentation

TitleFileVersionDate
DatasheetPT3323.pdfV1.02018/1/19

Tools

Application Note

TitleFileVersionDate
Demo Board說明書PT3323 Demo Board說明書.pdfV1.02019/3/25