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Número de pieza | SA58671 | |
Descripción | 1.2 W/channel Stereo Class-D Audio Amplifier | |
Fabricantes | NXP Semiconductors | |
Logotipo | ||
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No Preview Available ! SA58671
1.2 W/channel stereo class-D audio amplifier
Rev. 01 — 21 December 2007
Product data sheet
1. General description
www.DataSheet4U.com
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
1 page NXP Semiconductors
SA58671
1.2 W/channel stereo class-D audio amplifier
8. Static characteristics
Table 4. Static characteristics
Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
VDD
|VO(offset)|
supply voltage
output offset voltage
www.DataSheet4U.com
PSRR
Vi(cm)
CMRR
power supply rejection ratio
common-mode input voltage
common mode rejection ratio
VIH HIGH-level input voltage
VIL LOW-level input voltage
IIH HIGH-level input current
IIL LOW-level input current
IDD supply current
RDSon
drain-source on-state resistance
Zo(sd)
fsw
Gv(cl)
shutdown mode output impedance
switching frequency
closed-loop voltage gain
Conditions
operating
measured differentially;
inputs AC grounded;
Gv(cl) = 6 dB;
VDD = 2.5 V to 5.5 V
VDD = 2.5 V to 5.5 V
inputs are shorted together;
VDD = 2.5 V to 5.5 V
VDD = 2.5 V to 5.5 V;
pins SDL, SDR, G0, G1
VDD = 2.5 V to 5.5 V;
pins SDL, SDR, G0, G1
VDD = 5.5 V; VI = VDD
VDD = 5.5 V; VI = 0 V
VDD = 5.5 V; no load
VDD = 3.6 V; no load
VDD = 2.5 V; no load
VDD = 5.5 V
VDD = 3.6 V
VDD = 2.5 V
VSDR = VSDL = 0.35 V
VDD = 2.5 V to 5.5 V
VG0 = VG1 = 0.35 V
VG0 = VDD; VG1 = 0.35 V
VG0 = 0.35 V; VG1 = VDD
VG0 = VG1 = VDD
Min Typ Max
2.5 -
5.5
- 5 25
Unit
V
mV
- −75
0.5 -
- −69
1.3 -
0-
--
--
-6
-5
-4
- 500
- 570
- 700
-2
250 300
5.5 6
11.5 12
17.5 18
23.5 24
−55
VDD − 0.8
−50
dB
V
dB
VDD
0.35
V
V
50 µA
5 µA
9 mA
7.5 mA
6 mA
- mΩ
- mΩ
- mΩ
- kΩ
350 kHz
6.5 dB
12.5 dB
18.5 dB
24.5 dB
SA58671_1
Product data sheet
Rev. 01 — 21 December 2007
© NXP B.V. 2007. All rights reserved.
5 of 24
5 Page NXP Semiconductors
SA58671
1.2 W/channel stereo class-D audio amplifier
www.DataSheet4U.com
20
FFT
(dB)
−20
001aah174
−60
−100
−140
0
a. channel 1
20
FFT
(dB)
−20
4
8 12 16 20
f (kHz)
001aah556
−60
−100
−140
0 4 8 12 16 20
f (kHz)
b. channel 2
Fig 9. FFT spectrum as a function of frequency; fi = 1 kHz; VI = 0 dB; VDD = 3.6 V; RL = 8 Ω
SA58671_1
Product data sheet
Rev. 01 — 21 December 2007
© NXP B.V. 2007. All rights reserved.
11 of 24
11 Page |
Páginas | Total 24 Páginas | |
PDF Descargar | [ Datasheet SA58671.PDF ] |
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