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PDF FAN3800 Data sheet ( Hoja de datos )
| Número de pieza | FAN3800 | |
| Descripción | Mono / Stereo Audio Amplifier | |
| Fabricantes | Fairchild Semiconductor | |
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October 2007
FAN3800 — Mono / Stereo Audio Amplifier with
Microphone Pre-Amplifier and EMU Interface
Features
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
Applications
One-piece stereo/mono headset with microphone
EMU to 3.5mm stereo headphone adapter
www.DataSheet4EUM.coUmto 2.5 or 3.5 adapter for stereo headset with
microphone
Description
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.
ID
MUTE
BYPASS
MIC+
MIC-
MICSUP
MLP-24
4x4mm
CPOUT
V-
SPKLOUT
VS
SPKROUT
D+
Ordering Information
Part Number
FAN3800MLP24X
Pb-Free
© 2007 Fairchild Semiconductor Corporation
FAN3800 • Rev. 1.0.0
Figure 1. FAN3800 Pin Out
Package
24-Pin Molded Leadless Package (MLP)
Packing Method
Pack
www.fairchildsemi.com
1 page  
Electrical Characteristics
TA = 25°C, VS = 3.0V, audio inputs at -6dBV and AC coupled with 1µF, speaker outputs DC coupled into 16Ω loads
referenced to 1kHz, ID = VIL, CBYPASS = 100nF, unless otherwise noted.
Symbol
Parameter
Power Supply Characteristics
IS Supply Current(1)
tSUPPLY
Power-Up Stabilization Time
PSRRMIC
Power Supply Noise Rejection at
MIC Output
PSRRSPKR
Power Supply Noise Rejection at
Speaker Output
VMIC
Microphone Bias Supply(1)
D+/D- Line Characteristics
VOH D+
Output High Voltage D+(1)
VOL D+
Output Low Voltage D+ (1)
VOL D-
Output Low Voltage D-(1)
VEN LOW
VEN HIGH
D- Voltage to Disable MFB(1)
D- Voltage to Enable MFB(1)
ID Line Characteristics
VOH Output High Voltage(1)
VOL Output Low Voltage(1)
VIH
www.DataSheet4U.com
VIL
Input High Voltage – Stereo Mode(1)
Input Low Voltage – Mono Mode(1)
IIN Input Leakage Current(2)
Input/Output Impedance
ZiD-
ZiD+
ZOD+
Zi MICSUP
ZL D+
D- Input Impedance(1)
D+ Input Impedance(1)
D+ Output Impedance(2)
MICSUP input Impedance(2)
Maximum Load Impedance on D+(2)
ZL SPKR
Maximum Load Impedance on
SPKROUT & SPKLOUT(2)
Mute Input
VIH
VIL
Input High Voltage(1)
Input Low Voltage(1)
Conditions
Min. Typ. Max.
No load
5.6 6.0
V+, V- within 90% of final value
10
217Hz 12% duty cycle square wave
2.7V to 3.2V at VS
Output (D+) in Vrms as single wideband
measurement within psophometric filter
-80
217Hz 12% duty cycle square wave
2.7V to 3.2V at VS
Output (D+) in Vrms as single wideband
noise measurement within 20Hz –
20kHz, A weighted
-80
Supply current = 1mA
2.0 2.1 2.2
During detection, mono mode (external
150k ± 30% D+ pull-up to 2.775V 3%
During detection, stereo mode (external
150k ± 30% D+ pull-up to 2.775V 3%
During detection (external 4M pull-down
to GND)
Multi-function button disabled
Multi-function button enabled
2.0
1.0
0.8
0.8
0.5
Send-end active, 102kΩ pull-down
resistor
Send -end Active, 102kΩ pull-down
resistor
Voltage divider from phone and external
102kΩ pull-down resistors
Voltage divider from phone and external
102kΩ pull-down resistors
Send-end inactive
0.8
1.4
0.2
1.0
100
D-, mono mode; D-, stereo mode
D+, stereo mode
D+, mono mode
VS = 0
Mono mode
Stereo or mono mode
33
33
200
200
300
1
Mute-line floating
1.5
0.8
Units
mA
ms
dBV(p)
dBV(a)
V
V
V
V
V
V
V
V
V
V
nA
kΩ
kΩ
Ω
kΩ
pF
nF
V
V
Continued on the following page…
© 2007 Fairchild Semiconductor Corporation
FAN3800 • Rev. 1.0.0
5
www.fairchildsemi.com
5 Page | ||
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| PDF Descargar | [ Datasheet FAN3800.PDF ] | |
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