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PDF PAM8006 Data sheet ( Hoja de datos )
| Número de pieza | PAM8006 | |
| Descripción | 10W Stereo Class-D Audio Power Amplifier | |
| Fabricantes | Power Analog Microelectronics | |
| Logotipo |  |
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PAM8006
10W Stereo Class-D Audio Power Amplifier
Key Features
n 10W@10%THD / Channel Output into a 8Ω
Load at 13V
n Power Supply Range: 7.5V to 18V
n Low SNR: 95dB
n Over 90% Efficiency
n With Shutdown/Mute Function
n Over Current , Thermal, Short-Circuit
Protection and UVLO
n Low THD+N
n Low Quiescent Current
n Pop noise suppression
n Small Package Outlines: Thin 32-pin QFN
5mm*5mm and TSSOP-28PP Package
n RoHS Pass and Green Package
Applications
n Flat Monitor /LCD TVs
n Multi-media Speaker System
n DVD players, Game machines
n Boom Box
n Music instruments
Typical Application
General Description
The PAM8006 is a 10W (per channel) stereo
class-D audio amplifier with fixed gain which
offers low THD+N, low EMI, and good PSRR thus
high-quality sound reproduction.
The PAM8006 runs off from a 7.5V to 18V supply
at much higher efficiency than competitors’ICs.
The PAM8006 only requires very few external
components, significantly saving cost and board
space.
The PAM8006 is available in a 32pin QFN
5mm*5mm and TSSOP-28PP package.
1μF
10 μF
1μF
1μF 1μF
10 μF
RINN
RINP
GND
1μF
1μF
1 μF
MUTE
MUTE
RINN
RINP
AVD D
MUTE
PAM8006
VCLAMP
SD
AGND
V2P5
AVCC
1μF
GND
SHUTDOWN
1μF
10μF
GND
GND
VCC
100nF
SHUTDOWN
LINP
LINN
1 μF
1μF
LINP
LINN
COSC
220pF
GND
1μF
10 μF
1μF
1 μF
1 μF 10 μF
Power Analog Microelectronics, Inc
www.poweranalog.com
1
03/2011 Rev1.0
1 page  
PAM8006
10W Stereo Class-D Audio Power Amplifier
Absolute Maximum Ratings
These are stress ratings only and functional operation is not implied. Exposure to absolute
maximum ratings for prolonged time periods may affect device reliability. All voltages are with
respect to ground.
Supply Voltage VCC.............................-0.3V to 20V
Input Pin Voltage Range VI:
MUTE.................................................0V to 6.0V
SD....................................................-0.3V to VCC
RINN,RINP,LINN,LINP......................-0.3V to 6.0V
Junction Temperature Range,TJ......-40°C to 150°C
Storage Temperature.....................-65°C to150°C
Lead Temperature1,6mm(1/16 inch) from case for
5 seconds.................................................260°C
Recommended Operating Conditions
Supply Voltage (VCC )...........................7.5V to 18V
Maximum Volume Control Pins, Input Pins
Low Level Input Voltage: SD...................0 to 0.3V
MUTE...............0 to 0.3V
Voltage................................................0V to 5.0V Ambient Operating Temperature......-20°C to 85°C
High Level Input Voltage: SD.................2.0V to VCC Junction Temperature Range,TJ......-40°C to 125°C
MUTE, ........ ...2.0V to 5V
Thermal Information
Param eter
Thermal Resistance
(J unction to Case)
Thermal Resistance
(Junction to Ambient)
Internal Power Dissipation
(T A=25 °C)
Package
QFN 5mm* 5mm
TSSOP-28PP
QFN 5mm* 5mm
TSSOP-28PP
QFN 5mm* 5mm
TSSOP-28PP
Symbol
θJ C
θJ C
θJA
θJA
PD
PD
Maximum
7.6
14.4
18.1
27.8
5.52
3.60
Unit
°C/W
W
The Exposed PAD must be soldered to a thermal land on the PCB.
Power Analog Microelectronics, Inc
www.poweranalog.com
5
03/2011 Rev1.0
5 Page 
PAM8006
10W Stereo Class-D Audio Power Amplifier
MUTE Operation
The MUTE pin is an input for controlling the output
state of the PAM8006. A logic high on this pin
disables the outputs and low enables the outputs.
This pin may be used as a quick disable or enable
of the outputs.
For power saving, the SD pin should be used to
reduce the quiescent current to the absolute
minimum level.
Shutdown Operation
The PAM8006 employs a shutdown operation
mode to reduce supply current to the absolute
minimum level during periods of non-use to save
power. The SD input terminal should be held high
during normal operation when the amplifier is in
use. Pulling SD low causes the outputs to mute
and the amplifier to enter a low-current state. SD
should never be left unconnected to prevent the
amplifier from unpredictable operation.
For the best power-off pop performance, the
amplifier should be set in shutdown mode prior to
removing the power supply voltage.
Internal 2.5V Bias Generator Capacitor
Selection
The internal 2.5V bias generator (V2P5) provides
the internal bias for the preamplifier stage. The
external input capacitors and this internal
reference allow the inputs to be biased within the
optimal common-mode range of the input
preamplifiers.
The selection of the capacitor value on the V2P5
terminal is critical for achieving the best device
performance. During startup or recovery from
shutdown state, the V2P5 capacitor determines
the rate at which the amplifier starts up. When the
voltage on the V2P5 capacitor equals 0.75 x
V2P5, or 75% of its final value, the device turns on
and the class-D outputs start switching. The
startup time is not critical for the best de-pop
performance since any heard pop sound is the
result of the class-D output switching-on other
than that of the startup time. However, at least a
0.47µF capacitor is recommended for the V2P5
capacitor.
Another function of the V2P5 capacitor is to filter
high frequency noise on the internal 2.5V bias
generator.
Power Supply Decoupling, CS
The PAM8006 is a high-performance CMOS audio
amplifier that requires adequate power supply
decoupling to ensure the output total harmonic
distortion (THD) as low as possible. Power supply
decoupling also prevents oscillations caused by
long lead between the amplifier and the speaker.
The optimum decoupling is achieved by using two
capacitors of different types that target different
types of noise on the power supply leads. For
higher frequency transients, spikes, or digital
hash on the line, a good low equivalent-series-
resistance (ESR) ceramic capacitor, typically
1µF, is recommended, placing as close as
possible to the device’s VCC lead. To filter lower-
frequency noises, a large aluminum electrolytic
capacitor of 10µF or greater is recommended,
placing near the audio power amplifier. The 10µF
capacitor also serves as a local storage capacitor
for supplying current during large signal
transients on the amplifier outputs.
BSN and BSP Capacitors
The full H-bridge output stages use NMOS
tra nsistors only. They therefore require bootstrap
capacitors for the high side of each output to turn
on correctly. A at least 220nF ceramic capacitor,
rated for at least 25V, must be connected from
each output to its corresponding bootstrap input.
Specifically, one 220nF capacitor must be
connected from xOUTP to xBSP, and another
220nF capacitor from xOUTN to xBSN. It is
recommended to use 1μF BST capacitor to
replace 220nF (pin15, pin16, pin35 and pin36)
for lower than 100Hz applications.
VCLAMP Capacitors
To ensure that the maximum gate-to-source
voltage for the NMOS output transistors not
exceeded, two internal regulators are used to
clamp the gate voltage. Two 1µF capacitors must
be connected from VCLAMP to ground and must
be rated for at least 25V. The voltages at the
VCLAMP terminals vary with V CC and may not be
used to power any other circuitry.
Power Analog Microelectronics, Inc
www.poweranalog.com
11
03/2011 Rev1.0
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet PAM8006.PDF ] | |
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