EUTECH EUA6011A Service Manual
EUA6011A
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
3-W Stereo Audio Power Amplifier
with Advanced DC Volume Control
DESCRIPTOIN
The EUA6011A is a stereo audio power amplifier that drives
3 W/channel of continuous RMS power into a 3-Ω load.
Advanced dc volume control minimizes external components
and allows BTL (speaker) volume control and SE (headphone)
volume control. Notebook and pocket PCs benefit from the
integrated feature set that minimizes external components
without sacrificing functionality.
To simplify design, the speaker volume level is adjusted by
applying a dc voltage to the VOLUME terminal. Likewise, the
delta between speaker volume and headphone volume can be
adjusted by applying a dc voltage to the SEDIFF terminal. To
avoid an unexpected high volume level through the
headphones, a third terminal, SEMAX, limits the headphone
volume level when a dc voltage is applied. Finally, to ensure a
smooth transition between active and shutdown modes, a fade
mode ramps the volume up and down.
FEATURES
z Advanced DC Volume Control With 2-dB Steps
From -40 dB to 20 dB
-Fade Mode
-Maximum Volume Setting for SE Mode
-Adjustable SE Volume Control
Referenced to BTL Volume control
z 3 W into 3-Ω Speakers
z Stereo Input MUX
z Differential Inputs
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Notebook PC
z LCD Monitors
z Pocket PC
DS6011A Ver 1.0 Mar. 2006
1
EUA6011A
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
Block Diagram
DS6011A Ver 1.0 Mar. 2006
2
EUA6011A
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
Typical Application Circuit
Figure 1. Application circuit using single-ended inputs and input MUX
Figure 2. Application circuit using differential inputs
DS6011A Ver 1.0 Mar. 2006
3
EUA6011A
E
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
Pin Configurations
Package Pin Configurations(Top View)
TSSOP-24 with a Thermal
Pad exposure on the bottom
of the package
Pin Description
PIN PIN I/O DESCRIPTION
PGND 1,13 - Power ground
LOUT- 12 O Left channel negative audio output
PVDD 3,11 - Supply voltage terminal for power stage
LHPIN 10 I
LLINEIN 9 I
LIN 8 I
VDD 7 - Supply voltage terminal
RIN 6 I
RLINEIN 5 I
RHPIN 4 I
ROUT- 2 O Right channel negative audio output
ROUT+ 24 O Right channel positive audio output
SHUTDOWN
FAD
15 I Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal
16 I
BYPASS 17 I Tap to voltage divider for internal midsupply bias generator used for analog reference
AGND 18 - Analog power supply ground
SEMAX 19 I Sets the maximum volume for single ended operation. DC voltage range is 0 to V
SEDIFF 20 I
VOLUME 21 I Terminal for dc volume control. DC voltage range is 0 to V
22 I
LINEHP/
23 I
BTLSE/
LOUT+ 14 O Left channel positive audio output.
Left channel headphone input, selected when
Left channel line input, selected when
LINEHP/
is held high
LINEHP/
is held low
Common left channel input for fully differential input. AC ground for single-ended
inputs.
Common right channel input for fully differential input. AC ground for single-ended
inputs.
Right channel line input, selected when
Right channel headphone input, selected when
LINEHP/
is held low
is held high
LINEHP/
Places the amplifier in fade mode if a logic low is placed on this terminal; normal
operation if a logic high is placed on this terminal
Sets the difference between BTL volume and SE volume. DC voltage range is 0 to
V
DD.
DD.
Input MUX control. When logic high, RHPIN and LHPIN inputs are selected .When
logic low, RLINEIN and LLINEIN inputs are selected.
Output MUX control. When this terminal is high, SE outputs are selected. When this
terminal is low, BTL outputs are selected.
DD.
DS6011A Ver 1.0 Mar. 2006
4
EUA6011A
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
Ordering Information
Order Number Package Type Marking Operating Temperature range
EUA6011AQIR1 TSSOP 24
EUA6011AQIT1 TSSOP 24
EUA6011A □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape& Reel
T: Tube
Operating temperature range
I: Industry Standard
Package Type
Q: TSSOP
xxxx
EUA6011A
xxxx
EUA6011A
-40 °C to 85°C
-40 °C to 85°C
DS6011A Ver 1.0 Mar. 2006
5
EUA6011A
深圳市速学王科技 0755-82924118 sales@mcu104.com www.mcu104.com
Absolute Maximum Ratings
Supply voltage, V
Input voltage, V
------------------------------------------------------------------------------------------------ 6V
DD
------------------------------------------------------------------------------ –0.3 V to VDD +0.3 V
I
Continuous total power dissipation---------------------------- internally limited (see Dissipation Rating Table)
Operating free-air temperature range, T
Operating junction temperature range, T
Storage temperature range, T
------------------------------------------------------------------ -- –65°C to 150°C
stg
--------------------------------------------------------- –40°C to 85° C
A
------------------------------------------------------ - –40°C to 150°C
J
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds----------------------------------------- 260°C
Thermal Resistance
θ
(TSSOP) ----------------------------------------------------------------------------------------------- 87.9°C/W
JA
Recommended Operating Conditions
Supply voltage, VDD 4 5.5 V
High-level input voltage, VIH
Low-level input voltage, VIL
,
BTLSE/
SHUTDOWN
,
BTLSE/
SHUTDOWN
,
FADE
LINEHP/
,
FADE
LINEHP/
Operating free-air temperature, TA -40 85 °C
Min Max Unit
V
0.8
×
DD
2
V
DD
0.6
×
0.8
V
V
Electrical Characteristics at Specified Free-air Temperature, VDD = PVDD=5.5V, TA = 25°C
Symbol Parameter Conditions
V
5.5V,Gain=0 dB,
OOV
Output offset voltage
(measured differentially)
DD=
V
5.5V,Gain=20 dB,
DD=
PSRR Power supply rejection ratio VDD= PV
High-level input current
IHI
(
FADE
,
BTLSE/
SHUTDOWN
,
LINEHP/
,SEMAX,
,
V
= PV
DD
DD=
VOLUME,SEDIFF)
ILI
IDD Supply current, no load
Low-level input current V
VDD= PV
V
DD
= PV
DD
DD=
SHUTDOWN
= PV
DD=
SHUTDOWN
Supply current, max power into a
IDD
Ω load
3-
DD
DD=
SHUTDOWN
V
= PV
Po=2 W, stereo
4 V to 5.5 V -42 -70 dB
DD=
5.5V, VI = VDD =PVDD 1 µA
5.5V, VI = 0V 1 µA
DD=
5.5V, ,
=2V
5.5V, ,
BTLSE/
=2V
5.5V, ,
=2V,R
BTLSE/
BTLSE/
BTLSE/
BTLSE/
=3Ω,
L
=0V
=0V
=0V,
=5.5V
=0V,
EUA6011A
Unit
Min. Typ. Max.
30 mV
50 mV
6 7.5 9
mA
3 5 6
1.5 A
RMS
I
Supply current, shutdown mode
DD(SD)
SHUTDOWN
=0V
DS6011A Ver 1.0 Mar. 2006
6
1 20 µA
Loading...