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PDF SA58672UK Data sheet ( Hoja de datos )
| Número de pieza | SA58672UK | |
| Descripción | 3.0W mono class-D audio amplifier | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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SA58672
3.0 W mono class-D audio amplifier
Rev. 04 — 8 June 2009
Product data sheet
1. General description
The SA58672 is a mono, filter-free class-D audio amplifier which is available in a 9 bump
WLCSP (Wafer Level Chip-Size Package) and 10-terminal HVSON packages.
The SA58672 features shutdown control. 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 SA58672 delivers 1.7 W at 5 V and 800 mW at 3.6 V into 8 Ω. It delivers 3.0 W at 5 V
and 1.6 W at 3.6 V into 4 Ω. The maximum power efficiency is excellent at 90 % into 8 Ω
and 84 % to 88 % into 4 Ω. The SA58672 provides thermal and short-circuit shutdown
protection.
2. Features
I Output power
N 3.0 W into 4 Ω at 5 V
N 1.6 W into 4 Ω at 3.6 V
N 1.7 W into 8 Ω at 5 V
N 800 mW into 8 Ω at 3.6 V
I Power supply range: 2.0 V to 5.5 V
I Shutdown control
I High SVRR: −77 dB at 217 Hz
I Fast start-up time: 7.0 ms
I Low supply current
I Low shutdown current
I Short-circuit and thermal protection
I Space savings with 1.66 mm × 1.71 mm × 0.6 mm 9 bump WLCSP package
I Low junction to ambient thermal resistance of 100 K/W with adequate heat sinking of
WLCSP
I Enhanced power dissipation with 3.0 mm × 3.0 mm × 0.85 mm HVSON10 package
1 page  
NXP Semiconductors
SA58672
3.0 W mono class-D audio amplifier
8. Static characteristics
Table 4. Static characteristics
Tamb = 25 °C, unless otherwise specified[1].
Symbol Parameter
Conditions
VDD
|VO(offset)|
PSRR
Vi(cm)
CMRR
IIH
IIL
IDD
IDD(sd)
VSD
supply voltage
output offset voltage
measured differentially;
inputs AC grounded;
Gv = 6 dB;
VDD = 2.0 V to 5.5 V
power supply rejection ratio VDD = 2.0 V to 5.5 V
common-mode input voltage VDD = 2.0 V to 5.5 V
common mode rejection ratio inputs are shorted together;
VDD = 2.0 V to 5.5 V
HIGH-level input current
VDD = 5.5 V; VI = VDD
LOW-level input current
VDD = 5.5 V; VI = 0 V
supply current
VDD = 5.5 V; no load
VDD = 5.0 V; no load
VDD = 3.6 V; no load
VDD = 2.5 V; no load
shutdown mode supply current no input signal; VSD = GND
voltage on pin SD
device ON
device OFF
Zi
RDSon
input impedance
drain-source on-state
resistance
Zo(sd)
shutdown mode output
impedance
VDD = 2.0 V to 5.5 V
static; VDD = 5.5 V
static; VDD = 3.6 V
static; VDD = 2.5 V
VSD = 0.35 V
fsw
Gv(cl)
switching frequency
closed-loop voltage gain
VDD = 2.5 V to 5.5 V
VDD = 2.0 V to 5.5 V; Ri in kΩ
[1] VDD is the supply voltage on pin PVDD and pin AVDD.
GND is the ground supply voltage on pin PGND and pin AGND.
Min Typ Max Unit
2.0 -
5.5 V
- 5 25 mV
- −93 −70 dB
0.5 -
VDD − 0.8 V
- −69 −50 dB
-
-
-
-
-
-
1.3
GND
260
-
-
-
-
-
-
3.4
3.2
2.6
2.2
10
-
-
300
430
475
550
2
50
5
4.2
4.0
3.4
3.0
1000
VDD
0.35
340
-
-
-
-
µA
µA
mA
mA
mA
mA
nA
V
V
kΩ
mΩ
mΩ
mΩ
kΩ
250
260 kΩ
/ Ri
300
300 kΩ
/ Ri
350
340 kΩ
/ Ri
kHz
V/V
SA58672_4
Product data sheet
Rev. 04 — 8 June 2009
© NXP B.V. 2009. All rights reserved.
5 of 27
5 Page 
NXP Semiconductors
SA58672
3.0 W mono class-D audio amplifier
+20
FFT
(dB)
−40
002aad866
+20
FFT
(dB)
−40
002aad867
−100
−100
−160
0
8
a. fi = 1 kHz
16 24
f (kHz)
+20
FFT
(dB)
−40
−160
0
8
b. fi = 3 kHz
002aad868
16 24
f (kHz)
−100
−160
0 8 16 24
f (kHz)
c. fi = 5 kHz
Fig 12. FFT spectrum as a function of frequency; VDD = 3.6 V; VO = 6 dBV; RL = 2 × 15 µH + 4 Ω
SA58672_4
Product data sheet
Rev. 04 — 8 June 2009
© NXP B.V. 2009. All rights reserved.
11 of 27
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