FAN3800MLP24

FAN3800MLP24 Datasheet


FAN3800 Mono / Stereo Audio Amplifier with Microphone Pre-Amplifier and EMU Interface

Part Datasheet
FAN3800MLP24 FAN3800MLP24 FAN3800MLP24 (pdf)
Related Parts Information
FAN3800MLP24X FAN3800MLP24X FAN3800MLP24X
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FAN3800 Mono / Stereo Audio Amplifier with Microphone Pre-Amplifier and EMU Interface

October 2007

FAN3800 Mono / Stereo Audio Amplifier with Microphone Pre-Amplifier and EMU Interface

Regulated positive supply Negative supply generator allows ground-centered
output swing

Dual speaker drivers with mono/stereo switch
capability

Capable of driving 16mWRMS per channel Complete external microphone interface Enhanced mini-USB bus detection and interface
circuitry

Manual and remote send-end switch interface Pop and click suppression Single 2.7V to 4.5V operation 2kV ESD HBM protection MLP 24-pin package

One-piece stereo/mono headset with microphone EMU to 3.5mm stereo headphone adapter EMU to or adapter for stereo headset with
microphone

The FAN3800 is a low-cost solution that integrates the many discrete parts currently used in stereo headset applications. It provides mono / stereo speaker drivers and a complete microphone interface. Additionally, the FAN3800 allows headset detection and identification through a 5-pin, enhanced mini-USB EMU bus. Manual and remote send-end switching is supported.

The FAN3800 speaker drivers are designed to operate with a ground-centered output signal. This allows removal of large and expensive DC blocking capacitors. In addition, it allows interfacing with externally powered speakers. The speaker drivers are capable of driving up to 16mWRMS per channel.

FAN3800 delivers a complete solution for interfacing an external microphone. The microphone interface provides a regulated, high PSRR supply, differential input sense to single-ended output driver amplifiers, and output muting. Gain is fixed at 36dB and can be attenuated externally with a resistor divider network.

Send-end switching automatically routes the microphone output to the D+ output. When activated, the speakers switch from stereo to mono mode, both driven by the D- input. Pop and click noise is minimized during switching. Send-end information can be generated manually through an external switch or through the EMU bus interface.

SW1 V+ GND VS CP1 CP2

ID MUTE BYPASS MIC+

MICMICSUP

MLP-24 4x4mm

CPOUT VSPKLOUT VS SPKROUT D+

MICOUT MICSW

GND D-

SPKLIN SPKRIN
Ordering Information

Part Number FAN3800MLP24X

Pb-Free

Figure FAN3800 Pin Out

Package 24-Pin Molded Leadless Package MLP

Packing Method Pack

FAN3800 Mono / Stereo Audio Amplifier with Microphone Pre-Amplifier and EMU Interface

Block Diagram

VBUS DD+ ID

SPKLIN D-

SPKRIN D+

CP1 CP2 CPOUT
2.5V Suppl y

Vpos

MIC BIAS

Neg Suppl y

DRstereo

Vpos Rmono

VVpos

V0dB VVpos

V0dB

MICBIAS

ID Bias

SE N D /EN D N.O.

Rid 102k
38dB D-

Audi o Re mo val Filter

MICSW

MICOUT

Bias V+

MUTE R1

MUTE R2

SPKLOUT

SPK R OU T BYPASS MICSUP

R mic+ MIC-

R mic

Figure Block Diagram
2007 Fairchild Semiconductor Corporation

SW1 V+ GND VS CP1 CP2

MICOUT MICSW

GND D-
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Datasheet ID: FAN3800MLP24 513889