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PDF SA58670A Data sheet ( Hoja de datos )

Número de pieza SA58670A
Descripción 2.1 W/channel stereo class-D audio amplifier
Fabricantes NXP Semiconductors 
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SA58670A
2.1 W/channel stereo class-D audio amplifier
Rev. 02 — 23 October 2008
Product data sheet
1. General description
The SA58670A is a stereo, filter-free class-D audio amplifier which is available in an
HVQFN20 package with the exposed Die Attach Paddle (DAP).
The SA58670A features independent shutdown controls for each channel. The gain may
be set at 6 dB, 12 dB, 18 dB or 24 dB with gain select pins G0 and G1. Improved immunity
to noise and RF rectification is increased by high PSRR and differential circuit topology.
Fast start-up time and small package makes it an ideal choice for both cellular handsets
and PDAs.
The SA58670A delivers 1.4 W/channel at 5.0 V and 720 mW/channel at 3.6 V into 8 . It
delivers 2.1 W/channel at 5.0 V into 4 . The maximum power efficiency is excellent at
70 % to 74 % into 4 and 84 % to 88 % into 8 . The SA58670A provides thermal and
short-circuit shutdown protection.
2. Features
I Output power:
N 2.1 W/channel into 4 at 5.0 V
N 1.4 W/channel into 8 at 5.0 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 4 mm × 4 mm HVQFN20 package
I Low junction to ambient thermal resistance of 24 K/W with exposed DAP
3. Applications
I Wireless and cellular handset and PDA
I Portable DVD player
I USB speaker
I Notebook PC
I Portable radio and gaming

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SA58670A pdf
NXP Semiconductors
SA58670A
2.1 W/channel stereo class-D audio amplifier
8. Static characteristics
Table 4. Static characteristics
Tamb = 25 °C; unless otherwise specified[1].
Symbol Parameter
Conditions
VDD supply voltage
IDD supply current
IDD(sd) shutdown mode supply current
PSRR
Vi(cm)
CMRR
power supply rejection ratio
common-mode input voltage
common mode rejection ratio
VIH HIGH-level input voltage
operating
VDD = 2.5 V; no load
VDD = 3.6 V; no load
VDD = 5.5 V; no load
no input signal;
VSDR = VSDL = GND
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
VIL LOW-level input voltage
VDD = 2.5 V to 5.5 V;
pins SDL, SDR, G0, G1
IIH
IIL
fsw
Gv(cl)
HIGH-level input current
LOW-level input current
switching frequency
closed-loop voltage gain
Pins OUTLP, OUTLN, OUTRP and OUTRN
VDD = 5.5 V; VI = VDD
VDD = 5.5 V; VI = 0 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
RDSon
|VO(offset)|
Zo(sd)
drain-source on-state resistance
output offset voltage
shutdown mode output impedance
VDD = 2.5 V
VDD = 3.6 V
VDD = 5.5 V
measured differentially; inputs
AC grounded; Gv(cl) = 6 dB;
VDD = 2.5 V to 5.5 V
VSDR = VSDL = 0.35 V
[1] VDD is the supply voltage on pins PVDD and pin AVDD.
GND is the ground supply voltage on pins PGND and pin AGND.
Min Typ
2.5 -
-4
-5
-6
- 10
- 75
0.5 -
- 69
1.3 -
0-
--
--
250 300
5.5 6
11.5 12
17.5 18
23.5 24
- 700
- 570
- 500
-5
Max
5.5
6
7.5
9
1000
Unit
V
mA
mA
mA
nA
55
VDD 0.8
50
dB
V
dB
VDD
0.35
V
V
50 µA
5 µA
350 kHz
6.5 dB
12.5 dB
18.5 dB
24.5 dB
- m
- m
- m
10 mV
- 2-
k
SA58670A_2
Product data sheet
Rev. 02 — 23 October 2008
© NXP B.V. 2008. All rights reserved.
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SA58670A arduino
NXP Semiconductors
SA58670A
2.1 W/channel stereo class-D audio amplifier
1
THD+N
(%)
101
102
(1)
(2)
(3)
103
10
102
103
(1) Po = 1.65 W; Vi = 1.285 V (RMS).
(2) Po = 1.1 W; Vi = 1.05 V (RMS).
(3) Po = 550 mW; Vi = 741.6 mV (RMS).
a. RL = 4
10
THD+N
(%)
1
(1)
001aah492
104 105
f (Hz)
001aah493
101
102
(2)
(3)
103
10
102 103 104 105
f (Hz)
(1) Po = 1.16 W; Vi = 1.523 V (RMS).
(2) Po = 775 mW; Vi = 1.245 V (RMS).
(3) Po = 380 mW; Vi = 871.8 mV (RMS).
b. RL = 8
Gv(cl) = 6 dB.
Fig 7. Total harmonic distortion-plus-noise as a function of frequency; VDD = 5.0 V
SA58670A_2
Product data sheet
Rev. 02 — 23 October 2008
© NXP B.V. 2008. All rights reserved.
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