Power Amplifier. ETK4992 Datasheet

ETK4992 Amplifier. Datasheet pdf. Equivalent

ETK4992 Datasheet
Recommendation ETK4992 Datasheet
Part ETK4992
Description 1.25 Watt Fully Differential Audio Power Amplifier
Feature ETK4992; Etek Microelectronics ETK4992 1.25 Watt Fully Differential Audio Power Amplifier General Descript.
Manufacture Etek Microelectronics
Datasheet
Download ETK4992 Datasheet




Etek Microelectronics ETK4992
Etek
Microelectronics
ETK4992
1.25 Watt Fully Differential Audio Power Amplifier
General Description
The ETK4992 is a fully differential audio power amplifier designed for portable communication device
applications. It is capable of delivering 1.25 watt of continuous average power to an 8BTL load with less than
1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.
Features like 90dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving 8-bump WLCSP
package, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown
mode make ETK4992 ideal for wireless handsets.
The ETK4992 is unity-gain stable, and the gain can be configured by external resistors.
Features
z Fully differential amplifier
z Improved PSRR at 217Hz (VDD>3.0V)
90dB (typ)
z Power output at 5.0V & 1% THD&8
1.25W (typ)
z Power output at 5.0V & 1% THD&4
2.25W (typ)
z Power output at 4.2V & 1% THD&8
0.92W (typ)
z Power output at 4.2V & 1% THD&4
1.56W (typ)
z Power output at 3.6V & 1% THD&8
0.7W (typ)
z Power output at 3.6V & 1% THD&4
1.1W (typ)
z Ultra low shutdown current
0.01μA (typ)
z Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
z Thermal overload protection circuitry
z No output coupling capacitors, bootstrap capacitors required
z Unity-gain stable
z External gain configuration capability
z Available in space-saving package: 8-bump WLCSP
Applications
z Wireless handsets
z Portable electronic devices
z PDAs, Handheld computers
Rev 2.1 2010-02-05
1/11



Etek Microelectronics ETK4992
ETK4992
Pin Configuration
A1
VO-
B1 B2
SHUTDOWN GND
C1
BYPASS
C2
IN+
Top View
A3
VDD
B3
VO+
C3
IN-
Pin Function
Pin No.
A1
B1
Name
VO-
SHUTDOWN
C1 BYPASS
B2 GND
C2 IN+
A3 VDD
B3 VO+
C3 IN-
I/O
O
I
I
POWER
I
POWER
O
I
Function
Negative differential output.
Shutdown Pin,active low.
Common mode voltage. Connect a bypass capacitor to GND for
common mode voltage filtering. The bypass capacitor is optional.
Ground.
Positive differential input.
Power supply.
Positive differential output.
Negative differential input.
Rev 2.1 2010-02-05
2/11



Etek Microelectronics ETK4992
Application Circuit
ETK4992
Figure1. Typical Differential Input Application
Figure2. Differential Input Application With Input Capacitors
Rev 2.1 2010-02-05
3/11







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