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PDF EUA6412A Data sheet ( Hoja de datos )
| Número de pieza | EUA6412A | |
| Descripción | Audio Power Amplifier | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUA6412A
2.6-W Stereo Audio Power Amplifier
with Four Selectable Gain Settings
DESCRIPTOIN
The EUA6412A is a stereo audio power amplifier. When
driving 1 W into 8–Ω speakers, the EUA6412A has less than
0.8% THD+N across its specified frequency range. Included
within this device is integrated depop circuitry that virtually
eliminates transients that cause noise in the speakers.
Amplifier gain is internally configured and controlled by way
of two terminals (GAIN0 and GAIN1). BTL gain settings of 6
dB, 10 dB, 15.6 dB, and 21.6 dB are provided, while SE gain
is always configured as 4.1 dB for headphone drive. An
internal input MUX allows two sets of stereo inputs to the
amplifier .The HP/LINE terminal allows the user to select
which MUX input is active, regardless of whether the
amplifier is in SE or BTL mode. In notebook applications,
where internal speakers are driven as BTL and the line outputs
(often headphone drive) are required to be SE, the EUA6412A
automatically switches into SE mode when the SE/BTL input
is activated, and this reduces the gain to 4.1 dB.
The EUA6412A consumes only 10mA of supply current
during normal operation.
Block Diagram
FEATURES
z 2.6W per Channel Output Power Into 3-Ω Load
z Internal Gain Control, Which Eliminates
External Gain-Setting Components
z Input MUX Select Terminal
z PC-Beep Input
z Depop Circuitry Integrated
z Two Input Modes Allowable with Single-Ended or
Fully Differential Input
z Low Supply Current and Shutdown Current
z Thermal Shutdown Protection
z TSSOP-24 with Thermal Pad
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Notebook Computers
z Multimedia Monitors
z Digital Radios and Portable TVs
DS6412A Ver 1.1 June 2008
www.DataSheet.in
Figure 1.
1
1 page  
Absolute Maximum Ratings
EUA6412A
Supply voltage, VDD------------------------------------------------------------------------------------------------ 6V
Input voltage, VI------------------------------------------------------------------------------ –0.3 V to VDD +0.3 V
Operating free-air temperature range, TA--------------------------------------------------------- –40 C to 85 C
Operating junction temperature range, TJ ------------------------------------------------------ - –40 C to 150 C
Storage temperature range, Tstg------------------------------------------------------------------ -- –65 C to 150 C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds----------------------------------------- 260 C
Thermal Resistance
θJA (TSSOP) ----------------------------------------------------------------------------------------------- 87.9°C/W
Recommended Operating Conditions
Supply voltage, VDD
High-level input voltage, VIH
Low-level input voltage, VIL
Operating free-air temperature, TA
SE/BTL , HP/LINE
SHUTDOWN
SE/BTL , HP/LINE
SHUTDOWN
Min
4.5
4
2
-40
Max
5.5
3
0.8
85
Unit
V
V
V
°C
Electrical Characteristics at Specified Free-air Temperature, VDD = 5V, TA = 25°C
Symbol
Parameter
VOO
PSRR
Output offset voltage
(measured differentially)
Power supply rejection ratio
Conditions
VI =0V, AV =2 V/V
VDD= 4.5 V to 5.5 V
EUA6412A
Min. Typ. Max.
25
79
IIH High-level input current
VDD=5.5 V, VI = VDD
1
IIL Low-level input current
VDD=5.5 V, VI = 0V
1
IDD Supply current
BTL mode
SE mode
10 14
5 7.5
Unit
mV
dB
µA
µA
mA
IDD(SD) Supply current, shutdown mode
145 300 µA
DS6412A Ver 1.1 June 2008
www.DataSheet.in
5
5 Page 
Figure 28.
EUA6412A
Figure 29.
Figure 30.
Figure 31.
Figure 32.
DS6412A Ver 1.1 June 2008
www.DataSheet.in
11
Figure 33.
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet EUA6412A.PDF ] | |
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