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AA4838 Datasheet PDF - Agamem Microelectronic

Part Number AA4838
Description AUDIO POWER AMPLIFIER
Manufacturers Agamem Microelectronic 
Logo Agamem Microelectronic Logo 

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AA4838 datasheet, circuit
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AA4838Agamem Microelectronics Inc.
PRELIMINARY
AUDIO POWER AMPLIFIER
DESCRIPTION
The AA4838 is a monolithic integrated circuit that provides DC volume control, and stereo
bridged audio power amplifiers capable of producing 2W into 4Ωwith less than 1.0% THD or
2.2W into 3 Ω with less than 1.0% THD. The audio integrated circuits were designed
specifically to provide high quality audio while requiring a minimum amount of external
components. The AA4838 incorporates a DC volume control, stereo bridged audio power
amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia
monitors, portable radios, and desktop and portable computer applications. The AA4838
features an externally controlled, low-power consumption shutdown mode, and both a power
amplifier and headphone mute for maximum system flexibility and performance.
FEATURES
• DC volume control interface.
• System beep detects.
• Stereo switchable bridged/single-ended power amplifiers
• Selectable internal/external gain or bass boost
• “Click and pop” suppression circuitry
• Thermal shutdown protection circuitry
APPLICATIONS
• Portable and desktop computers
• Multimedia monitors
• Portable radios, PDAs, and portable TVs
©Copyright Agamem Microelectronics Inc.
1
www.agamem.com.tw 2008/8/26
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE
TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

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AA4838 equivalent
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AA4838Agamem Microelectronics Inc.
PRELIMINARY
AUDIO POWER AMPLIFIER
ELECTRICAL CHARACTERISTICS FOR VOLUME ATTENUATORS
The following specifications apply for VDD = 5V unless otherwise noted. Limits apply for TA = 25˚C
PARAMETER
Attenuator
Range
Mute
Attenuation
SYMBOL
CRANGE
AM
TEST CONDITION
Gain with VDCVOL = 5V, No
Load
Attenuation with VDCVOL
= 0V (BM & SE)
VMUTE = 5V, Bridged Mode
(BM)
VMUTE = 5V, Single-Ended
Mode (SE)
VALUE
MIN TYP MAX
UNIT
- - ±0.75 dB
-75 - - dB
-78 - - dB
-78 - - dB
ELECTRICAL CHARACTERISTICS FOR SINGLE-ENDED MODE OPERATION
The following specifications apply for VDD = 5V unless otherwise noted. Limits apply for TA = 25˚C
PARAMETER SYMBOL
TEST CONDITION
Output
Power
PO
Total
Harmonic
Distortion+
Noise
Power Supply
Rejection
Ratio
Signal to
Noise Ratio
Channel
Separation
THD+N
PSRR
SNR
XTALK
THD = 1.0%; f = 1kHz; RL =
32
THD = 10%; f = 1 kHz; RL=
32
VOUT = 1VRMS, f=1kHz, RL
= 10k, AVD = 1
CB = 1.0 µF,f=120Hz,
VRIPPLE
=200mVrms
POUT =75 mW, RL = 32,
A-Wtd Filter
f=1kHz, CB = 1.0 µF
VALUE
MIN TYP MAX
UNIT
- 85
- mW
- 95
- mW
- 0.065 -
%
- 58
-
- 102
- 65
-
-
dB
dB
dB
©Copyright Agamem Microelectronics Inc.
5
www.agamem.com.tw 2008/8/26
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE
TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

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Information Total 20 Pages
Download[ AA4838.PDF Datasheet ]

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