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SA58671 Datasheet

1.2 W/channel Stereo Class-D Audio Amplifier

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SA58671 pdf
SA58671
1.2 W/channel stereo class-D audio amplifier
Rev. 01 — 21 December 2007
Product data sheet
1. General description
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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 . It
delivers 1.2 W/channel at 5 V into 4 . The maximum power efficiency is excellent at
70 % to 74 % into 4 and 84 % to 88 % into 8 . The SA58671 provides thermal and
short-circuit shutdown protection.
2. Features
I Output power:
N 1.2 W/channel into 4 at 5 V
N 1.3 W/channel into 8 at 5 V
N 720 mW/channel into 8 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


NXP Semiconductors Electronic Components Datasheet

SA58671 Datasheet

1.2 W/channel Stereo Class-D Audio Amplifier

No Preview Available !

SA58671 pdf
NXP Semiconductors
SA58671
1.2 W/channel stereo class-D audio amplifier
I Portable radio and gaming
I Educational toy
4. Ordering information
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Table 1. Ordering information
Type number Package
Name
Description
SA58671UK WLCSP16 wafer level chip-size package; 16 bumps;
2.06 × 2.11 × 0.6 mm
5. Block diagram
Version
SA58671UK
SA58671
INRP D1
right input INRN C1
GAIN
ADJUST
PWM
H-
BRIDGE
PVDD
A2
C4 PGND
D3 OUTRP
D4 OUTRN
INTERNAL
OSCILLATOR
INLP A1
left input INLN B1
G0 C2
G1 B2
SDR B3
SDL B4
GAIN
ADJUST
PWM
H-
BRIDGE
A3 OUTLP
A4 OUTLN
300 k
BIAS
CIRCUITRY
300 k
D2 AVDD
SHORT-CIRCUIT
PROTECTION
C3 AGND
Refer to Table 6 for gain selection.
Fig 1. Block diagram
001aah390
SA58671_1
Product data sheet
Rev. 01 — 21 December 2007
© NXP B.V. 2007. All rights reserved.
2 of 24


Part Number SA58671
Description 1.2 W/channel Stereo Class-D Audio Amplifier
Maker NXP
Total Page 24 Pages
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