EUA5202
2-W Stereo Audio Power Amplifier
with Mute
DESCRIPTION
The EUA5202 is a stereo audio power amplifier that
delivering 2W of continuous RMS power per channel
into 3-Ω loads. When driving 1W into 8-Ω speakers, the
EUA5202 has less than 0.04% THD+N across its
specified frequency range. Included within this device is
integrated de-pop circuitry that virtually eliminates
transients that cause noise in the speakers.
Amplifier gain is externally configured by means of two
resistors per input channel and does not require external
compensation for settings of 2 to 20 in BTL mode (1 to
10 in SE mode). An internal input MUX allows two sets
of stereo inputs to the amplifier. In notebook
applications, where internal speakers are driven as BTL
and the line (often headphone drive) outputs are required
to be SE, the EUA5202 automatically switches into SE
mode when the
SE/BTL inputs is activated. Consume
only 7mA of supply current during normal operation,
and the EUA5202 also features a shutdown function for
power sensitive applications, holding the supply current
at 1µA.
FEATURES
Output Power at 3Ω Load
- 2W/ch at V
DD
=5V
- 800mW/ch at 3V
Low Supply Current and Shutdown Current
Integrated Depop Circuit
Mute and Shutdown Control Function
Thermal Shutdown Protection
Stereo Input MUX
Bridge-Tied Load (BTL) or Single-Ended (SE)
Modes.
TSSOP-24 with Thermal Pad
APPLICATIONS
Notebook Computers
Multimedia Monitors
Digital Radios and Portable TVs
Block Diagram
DS5202 Ver 1.4 Nov. 2004
1
EUA5202
Typical Application Circuit
Figure 1. EUA5202 Minimum Configuration Application Circuit
Figure 2. EUA5202 Full Configuration Application Circuit
DS5202 Ver 1.4 Nov. 2004
2
EUA5202
Pin Configurations
Package
Pin Configurations
TSSOP-24 with Thermal
Pad, exposure on the bottom
of the package
Pin Description
PIN
PIN
I/O
DESCRIPTION
HP/ LINE
LBYPASS
LHPIN
LLINE IN
LOUT+
LOUT-
GND/HS
LV
DD
MUTE IN
MUTE OUT
NC
RBYPASS
RHPIN
RLINEIN
ROUT+
ROUT-
RV
DD
SE/BTL
SHUTDOWN
T
J
16
6
5
4
3
10
1,12,13,
24
7
11
9
17,23
19
20
21
22
15
18
14
8
2
I
I
I
O
O
I
I
O
Input MUX control input, hold high to select LHP IN or RHP IN (5, 20), hold
low to select LLINE IN or RLINE IN (4, 21)
Tap to voltage divider for left channel internal mid-supply bias
Left channel headphone input, selected when
HP/LINE terminal (16) is held
high
Left channel line input, selected when HP/LINE terminal (16) is held low
Left channel + output in BTL mode, + output in SE mode
Left channel - output in BTL mode, high-impedance state in SE mode
Ground connection for circuitry, directly connected to thermal pad
Supply voltage input for left channel and for primary bias circuits
Mute all amplifiers, hold low for normal operation, hold high to mute
Follows MUTE IN terminal (11), provides buffered output
No internal connection
Tap to voltage divider for right channel internal mid-supply bias
Right channel headphone input, selected when HP/LINE terminal (16) is held
high
Right channel line input, selected when HP/LINE terminal (16) is held low
Right channel + output in BTL mode, + output in SE mode
Right channel - output in BTL mode, high-impedance state in SE mode
Supply voltage input for high channel
Hold low foe BTL mod, hold high for SE mode
Places entire IC in shutdown mode when held high, I
DD
=5µA
Sources a current proportional to the junction temperature. This terminal should
be left unconnected during normal operation.
I
I
O
O
I
I
I
O
DS5202 Ver 1.4 Nov. 2004
3
EUA5202
Ordering Information
Order Number
Package Type
Marking
Operating Temperature range
EUA5202QIR
EUA5202QIT
TSSOP 24
TSSOP 24
xxxx
EUA5202
xxxx
EUA5202
-40°C to 85°C
-40°C to 85°C
EUA5202
□ □ □
Packing
R: Tape& Reel
T: Tube
Operating temperature range
I: Industry Standard
Package Type
Q: TSSOP
DS5202 Ver 1.4 Nov. 2004
4
EUA5202
Absolute Maximum Ratings
Supply voltage , V
DD
-------------------------------------------------------------------------------------------
6V
Input voltage, V
1
----------------------------------------------------------------------------
-0.3V to V
DD
+0.3V
Continuous total power dissipation-------------------------------------------------------------
internally limited
Operating free-air temperature range ,T
A
------------------------------------------------------- –40°C to 85°C
Operating junction temperature range, T
J
------------------------------------------------------- –40°C to 150°C
Storage temperature range, T
stg
----------------------------------------------------------------
–65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds--------------------------------------
260°C
Recommended Operating Conditions
MIN NOM MAX UNIT
Supply Voltage, V
DD
V
DD
= 5V,
250m W/Ch average
power,
V
DD
= 5V,
2 W/Ch average power,
V
DD
= 5V
V
DD
= 3.3V
3
4
-
Ω
stereo BTL drive,
with proper PCB design -40
3-Ω stereo BTL drive,
with proper PCB design
-40
and 300 CFM
forced-air cooling
1.25
1.25
5
5.5
85
V
Operating free-air temperature,
T
A
°C
85
4.5
2.7
Common mode input voltage,
V
ICM
V
DC Electrical Characteristics, T
A
=25°C
Symbol
Parameter
V
DD
=5V
I
DD
Supply Current
V
DD
=3.3V
V
OO
I
DD (Mute)
I
DD(SD)
Output Offset Voltage
(measured differentially)
Supply Current in Mute
Mode
I
DD
in Shutdown
Conditions
Stereo BTL
Stereo SE
Stereo BTL
Stereo SE
EUA5202
Unit
Min. Typ Max.
7.1
3.9
5.7
3.1
5
1.55
1
5
11
6
9
5
25
mA
mA
mA
mA
mV
mA
µA
V
DD
=5V, Gain=2
V
DD
=5V
V
DD
=5V
DS5202 Ver 1.4 Nov. 2004
5
Sensor
京公网安备 11010802033920号
EEWORLD
