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Philips Semiconductors
2 × 25 W class-D power amplifier
1
FEATURES
• High efficiency (∼90%)
• Operating supply voltage from ±12.5 to ±30 V
• Very low quiescent current
• Low distortion
• Usable as a stereo Single-Ended (SE) amplifier or as a
mono amplifier in Bridge-Tied Load (BTL)
• Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in
Bridge-Tied Load (BTL)
• High output power
• Good ripple rejection
• Internal switching frequency can be overruled by an
external clock
• No switch-on or switch-off plop noise
• Short-circuit proof across load and to supply lines
• Electrostatic discharge protection
• Thermally protected.
4
QUICK REFERENCE DATA
SYMBOL
PARAMETER
= ±20 V
General; V
P
V
supply voltage
P
I
total quiescent supply
q(tot)
current
η
efficiency
Stereo single-ended configuration
P
output power
o
Mono bridge-tied load configuration
P
output power
o
Note
1. See Section 16.5.
5
ORDERING INFORMATION
TYPE
NUMBER
NAME
TDA8922TH
HSOP24
TDA8922J
DBS23P
2003 Mar 20
CONDITIONS
no load connected
P
= 25 W; SE: R
o
= 8 Ω; THD = 10%; V
R
L
= 4 Ω; THD = 10%; V
R
L
= 8 Ω; THD = 10%; V
R
L
plastic, heatsink small outline package; 24 leads;
low stand-off height
plastic DIL-bent-SIL power package; 23 leads
(straight lead length 3.2 mm)
2
APPLICATIONS
• Television sets
• Home-sound sets
• Multimedia systems
• All mains fed audio systems
• Car audio (boosters).
3
GENERAL DESCRIPTION
The TDA8922 is a high efficiency class-D audio power
amplifier with very low dissipation. The typical output
power is 2 × 25 W.
The device is available in the HSOP24 power package
with a small internal heatsink and in the DBS23P
through-hole power package. Depending on the supply
voltage and load conditions, a very small or even no
external heatsink is required. The amplifier operates over
a wide supply voltage range from ±12.5 to ±30 V and
consumes a very low quiescent current.
= 2 × 8 Ω; f
= 1 kHz
L
i
= ±20 V; note 1
P
= ±15 V; note 1
P
= ±15 V; note 1
P
PACKAGE
DESCRIPTION
3
Objective specification
TDA8922
MIN.
TYP.
MAX.
±12.5
±20
±30
−
55
75
−
−
90
−
22
25
−
22
25
−
46
50
VERSION
SOT566-3
SOT411-1
UNIT
V
mA
%
W
W
W
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