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HWD2190 Datasheet

  • HWD2190

  • 1 Watt Audio Power Amplifier

  • 32頁

  • ETC

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HWD2190
1 Watt Audio Power Amplifier
General Description
The
HWD2190
is an audio power amplifier primarily designed
for demanding applications in mobile phones and other por-
table communication device applications. It is capable of
delivering 1 watt of continuous average power to an 8鈩?BTL
load with less than 1% distortion (THD+N) from a 5V
DC
power supply.
audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The
HWD2190
does not require output
coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for mobile phone and other low voltage appli-
cations where minimal power consumption is a primary re-
quirement.
The
HWD
1
features a low-power consumption shutdown
2
90
mode, which is achieved by driving the shutdown pin with
logic low. Additionally, the
HWD2190
features an internal ther-
mal shutdown protection mechanism.
The
HWD2190
contains advanced pop & click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The
HWD2190
is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j
PSRR at 217Hz, V
DD
= 5V (Fig. 1)
j
Power Output at 5.0V & 1% THD
j
Power Output at 3.3V & 1% THD
j
Shutdown Current
62dB(typ.)
1W(typ.)
400mW(typ.)
0.1碌A(chǔ)(typ.)
Features
n
Available in space-saving packages: micro SMD, MSOP,
SOIC, and LLP
n
Ultra low current shutdown mode
n
BTL output can drive capacitive loads
n
Improved pop & click circuitry eliminates noises during
turn-on and turn-off transitions
n
2.2 - 5.5V operation
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Thermal shutdown protection
n
Unity-gain stable
n
External gain configuration capability
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Connection Diagrams
8 Bump micro SMD
Top View
Order Number
HWD2190IBP, HWD2190IBPX

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