See datasheet for actual packaging/pinout drawings


Package | PIN:

NGP | 8


I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)


LM4910 Output Capacitor-less Stereo 35mW Headphone Amplifier

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Texas Instruments LM4910LQ/NOPB

The LM4910 is an audio power amplifier primarily designed for headphone applications in portable device applications. It is capable of delivering 35mW of continuous average power to a 32Ω load with less than 1% distortion (THD+N) from a 3.3VDC power supply.

The LM4910 utilizes a new circuit topology that eliminates output coupling capacitors and half-supply bypass capacitors. The LM4910 contains advanced pop & click circuitry which eliminates noises caused by transients that would otherwise occur during turn-on and turn-off.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4910 does not require any output coupling capacitors, half-supply bypass capacitors, or bootstrap capacitors, it is ideally suited for low-power portable applications where minimal space and power consumption are primary requirements.

The LM4910 features a low-power consumption shutdown mode, activated by driving the shutdown pin with logic low. Additionally, the LM4910 features an internal thermal shutdown protection mechanism. The LM4910 is also unity-gain stable and can be configured by external gain-setting resistors.

Key Specifications

PSRR at f = 217Hz

65dB (typ)

Power Output at VDD = 3.3V, RL = 32Ω, and THD 1%

35mW (typ)

Shutdown Current

0.1µA (typ)

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