Datasheet Details
| Part number | LM4985 |
|---|---|
| Manufacturer | National Semiconductor (now Texas Instruments) |
| File Size | 1.48 MB |
| Description | Stereo 135mW Low Noise Headphone Amplifier |
| Datasheet |
 LM4985 Datasheet
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General Description
The LM4985 is a stereo audio power amplifier with internal digitally controlled volume control.
This amplifier is capable of delivering 68mWRMS per channel into a 16Ω load or 38mWRMS per channel into a 32Ω load at 1% THD when powered by a 3.6V power supply and operating in the OCL mode.
Key Features
- two functions that optimize system cost and minimize PCB area: an integrated, digitally controlled (I2C bus) volume control and an operational mode that eliminates output signal coupling capacitors (OCL mode). Since the LM4985 does not require bootstrap capacitors, snubber networks, or output coupling capacitors, it is optimally suited for low-power, battery powered portable systems. For added design flexibility, the LM4985 can also be configured for single-ended capacitively coupled outputs. Th.