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Eutech Microelectronics

EUA2008 Datasheet Preview

EUA2008 Datasheet

3-W Stereo Class-D Audio Amplifier

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EUA2008
3-W Stereo Class-D Audio Amplifier
with 32-Step DC Volume Control
DESCRIPTION
The EUA2008 is a high efficiency, 2 channel bridged-tied
load (BTL), class-D audio power amplifier. Operating from
a 5V power supply, EUA2008 is capable of delivering 3W/
channel of continuous output power to a 3load with 10%
THD+N. The EUA2008 features a differential input
architecture offering improved noise immunity over a
single-ended (SE) input amplifier. Stereo speaker volume
is controlled with a dc voltage applied to the volume
control terminal offering a range of gain from -38dB to20
dB.
The EUA2008 also features short-circuit and thermal
protection preventing the device from being damaged
during a fault condition. The EUA2008 is available in
thermally efficient 24-pin TSSOP package.
FEATURES
z Unique Modulation Scheme Reduces EMI Emission
z Efficient 5V Class-D Technology
- 3W Per Channel into 3Load (THD+N=10%)
- Low Supply Current, 7mA
- Low Shutdown Control, µA
- 0.33% THD at 1.5W, 1kHz
- Low Noise Floor, 62µV
- Maximum Efficiency into 3, 85%
- Maximum Efficiency into 8, 90%
- PSRR, -70dB
z No Large, Expensive LC Output Filter Required
z 32-Step DC Volume Control with 2dB Steps from
-38dB to 20dB
z Thermal and Short-Circuit Protection
z Integrated Click and Pop Suppression
z 24-pin TSSOP Package with Thermal Pad
z RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
Typical Application Circuit
APPLICATIONS
z LCD Monitors/TVs
z All-in- One PCs
z Powered Speakers
DS2008 Ver 1.0 Oct. 2009
Figure1.
1




Eutech Microelectronics

EUA2008 Datasheet Preview

EUA2008 Datasheet

3-W Stereo Class-D Audio Amplifier

No Preview Available !

Pin Configurations
Package Type
EUA2008Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Pin Configurations
TSSOP-24
Pin Description
PIN
1
2
3
4,9
5
6,7
8
10
11
12
13
14
15
16,21
17
18,19
20
22
23
24
NAME I/O
DESCRIPTION
LINN
I Negative differential audio input for left channel
LINP
I Positive differential audio input for left channel
SHUTDOWN
I
Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal;
normal operation if a TTL logic high is placed on this terminal.
PVDDL
Power supply for left channel H-bridge
LOUTP
O Positive audio output for left channel
PGNDL
- Power ground for left channel H-bridge
LOUTN O Negative audio output for left channel
COSC
ROSC
I
A capacitor connected to this terminal sets the oscillation frequency in conjunction
with ROSC. For proper operation, connect a 220-pF capacitor from COSC to ground.
A resistor connected to the ROSC terminal sets the oscillation frequency in
I conjunction with COSC. For proper operation, connect a 120-kresistor from ROSC
to ground.
AGND
- Analog ground
VDD
- Analog power supply
VOLUME
I
DC volume control for setting the gain on the internal amplifiers. The dc voltage range
is 0 to VDD.
NC I No connection
PVDDR
Power supply for right channel H-bridge
ROUTN O Negative output for right channel
PGNDR
- Power ground for right channel H-bridge
ROUTP
O Positive output for right channel
BYPASS
I
Tap to voltage divider for internal mid-supply bias generator used for internal analog
reference.
RINP
I Positive differential audio input for right channel
RINN
I Negative differential audio input for right channel
DS2008 Ver 1.0 Oct. 2009
2


Part Number EUA2008
Description 3-W Stereo Class-D Audio Amplifier
Maker Eutech Microelectronics
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EUA2008 Datasheet PDF






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