DESCRIPTION

The A2212 is a Class-AB audio power amplifier

designed for mobile phones and other portable

communication devices. It is capable of delivering

1.2 watts of continuous average power to an

8ΩBTL load with less than 1 distortion (THD+N)

from a 5VDC power supply.

The A2212 was designed specifically to provide

high quality output power with a minimal amount of

external components. It does not require output

coupling capacitors or bootstrap capacitors. And

with ultra low shutdown current, the A2212 is

ideally suited for mobile phone and other low

voltage applications where minimal power

consumption is a primary requirement.

With special pop-click eliminating circuit, the

A2212 provides perfect pop-click characteristic

during turn-on and turn-off transitions.

The A2212 is unity-gain stable and can be

configured by external gain-setting resistors.

The A2212 is available in CSP9 package

FEATURES

 Improved PSRR at 217 Hz 70dB

 Power output at 5.0V, 1 THD+N, 8Ω: 1.2W (typ.)

 Power output at 3.0V, 1 THD+N, 8Ω: 430mW

(typ.)

 Ultra low shutdown current: 0.1uA (typ.)

 2.2V ~ 5.5V operation

 Improved circuitry eliminates pop-click noise

during turn-on and turn-off transitions

 Excellent RFI (Radio Frequency Interference)

immunity

 No output coupling capacitors, snubber networks

or bootstrap capacitors required

 Unity-gain stable

 External gain configuration capability

 Available in CSP9 package

APPLICATION

 Wireless handsets

 Portable electronic devices

 PDAs, Handheld computers