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LM4916LDNSN/a200avai1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier
LM4916LDNS,NSN/a18000avai1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier
LM4916LDXNSN/a3005avai1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier


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LM4916LD-LM4916LDX
1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone Audio Amplifier
LM4916
1.5V, Mono 85mW BTL Output, 14mW Stereo Headphone
Audio Amplifier
General Description

The unity gain stable LM4916is botha mono differential
output (for bridge-tied loadsor BTL) audio power amplifier
anda Single Ended (SE) stereo headphone amplifier. Oper-
atingona single 1.5V supply, the mono BTL mode delivers
85mW intoan8Ω loadat1% THD+N.In Single Ended stereo
headphone mode,the amplifier delivers 14mW per channel
intoa 16Ω loadat 1% THD+N.
Withthe LM4916 packagedin the MM and LLP packages,
the customer benefits include low profile and small size.
These packages minimize PCB area and maximizes output
power.
The LM4916 features circuitry that reduces output transients
("clicks" and "pops") during device turn-on and turn-off,an
externally controlled, low-power consumption, active-low
shutdown mode, and thermal shutdown. Boomer audio
power amplifiers are designed specificallyto use few exter-
nal components and provide high quality output powerina
surface mount package.
Key Specifications
Mono-BTL output power (RL =8Ω,VDD= 1.5V, THD+N= 1%) 85mW (typ) Stereo Headphone output power (RL =16Ω,VDD= 1.5V, THD+N= 1%) 14mW (typ) Micropower shutdown current 0.02µA (typ) Supply voltage operating range 0.9V< VDD< 2.5V PSRR 1kHz, VDD= 1.5V 66dB (typ)
Features
Single-cell 0.9Vto 2.5V battery operation BTL modefor mono speaker Single ended headphone operation with coupling
capacitors Unity-gain stable "Click and pop" suppression circuitry Active low micropower shutdown Low current, active-low mute mode Thermal shutdown protection circuitry
Applications
Portable one-cell audio products Portable one-cell electronic devices
Typical Application

FIGURE1. Block Diagram
July 2003
LM4916
1.5V
Mono
85mW
BTL
Output,
14mW
Stereo
Headphone
Audio
Amplifier
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