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What is SA58670?

This electronic component, produced by the manufacturer "NXP Semiconductors", performs the same function as "2.1 W/channel stereo class-D audio amplifier".


SA58670 Datasheet PDF - NXP Semiconductors

Part Number SA58670
Description 2.1 W/channel stereo class-D audio amplifier
Manufacturers NXP Semiconductors 
Logo NXP Semiconductors Logo 


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SA58670
2.1 W/channel stereo class-D audio amplifier
Rev. 01 — 4 January 2008
Product data sheet
1. General description
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The SA58670 is a stereo, filter-free class-D audio amplifier which is available in an
HVQFN20 package with the exposed Die Attach Paddle (DAP).
The SA58670 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 SA58670 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 SA58670 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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SA58670 equivalent
NXP Semiconductors
SA58670
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
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PSRR
Vi(cm)
CMRR
power supply rejection ratio
common-mode input voltage
common mode rejection ratio
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
operating
VDD = 2.5 V; no load
VDD = 3.6 V; no load
VDD = 5.5 V; no load
VDD = 2.5 V to 5.5 V
inputs are shorted together;
VDD = 2.5 V to 5.5 V
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 drain-source on-state resistance VDD = 2.5 V
VDD = 3.6 V
VDD = 5.5 V
|VO(offset)| output offset voltage
measured differentially; inputs
AC grounded; Gv(cl) = 6 dB;
VDD = 2.5 V to 5.5 V
Zo(sd)
shutdown mode output impedance VSDR = VSDL = 0.35 V
Pins SDL and SDR
VI input voltage
channel on
channel off
II input current
no input signal; channel off
[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
- 75
0.5 -
- 69
--
--
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
55
VDD 0.8
50
Unit
V
mA
mA
mA
dB
V
dB
50 µA
5 µA
350 kHz
6.5 dB
12.5 dB
18.5 dB
24.5 dB
- m
- m
- m
10 mV
- 2-
-
GND
-
0.5VDD
-
10
-
0.4
1000
k
V
V
nA
SA58670_1
Product data sheet
Rev. 01 — 4 January 2008
© NXP B.V. 2008. All rights reserved.
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