SA58671 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

SA58671

1.2 W/channel stereo class-D audio amplifier

NXP Semiconductors. 

SA58671

1.2 W/channel stereo class-D audio amplifier

Rev. 02 — 24 October 2008

Product data sheet

1. General description

The SA58671 is a stereo, filter-free class-D audio amplifier which is available in a

16 bump WLCSP (Wafer Level Chip-Size Package).

The SA58671 features independent shutdown controls for each channel. The gain can be

set at 6 dB, 12 dB, 18 dB or 24 dB using G0 and G1 gain select pins. Improved immunity

to noise and RF rectification is increased by high PSRR and differential circuit topology.

Fast start-up time and very small WLCSP package makes it an ideal choice for both

cellular handsets and PDAs.

The SA58671 delivers 1.3 W/channel at 5 V and 720 mW/channel at 3.6 V into 8 Ω. It

delivers 1.2 W/channel at 5 V into 4 Ω. The maximum power efficiency is excellent at

70 % to 74 % into 4 Ω and 84 % to 88 % into 8 Ω. The SA58671 provides thermal and

short-circuit shutdown protection.

2. Features

I Output power:

N 1.2 W/channel into 4 Ω at 5 V

N 1.3 W/channel into 8 Ω at 5 V

N 720 mW/channel into 8 Ω at 3.6 V

I Supply voltage: 2.5 V to 5.5 V

I Independent shutdown control for each channel

I Selectable gain: 6 dB, 12 dB, 18 dB and 24 dB

I High SVRR: −77 dB at 217 Hz

I Fast start-up time: 3.5 ms

I Low supply current

I Low shutdown current

I Short-circuit and thermal protection

I Space savings with 2.06 mm × 2.11 mm 16 bump WLCSP package

I Low junction to ambient thermal resistance of 110 K/W with adequate heat sinking of

WLCSP

3. Applications

I Wireless and cellular handsets and PDA

I Portable DVD player

I USB speaker

I Notebook PC

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