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1998 Apr 07 2
Philips Semiconductors Product specification
2 × 8 W stereo BTL audio output amplifier
with DC volume control
TDA7057AQ
FEATURES
• DC volume control
• Few external components
• Mute mode
• Thermal protection
• Short-circuit proof
• No switch-on and switch-off clicks
• Good overall stability
• Low power consumption
• Low HF radiation
• ESD protected on all pins.
GENERAL DESCRIPTION
The TDA7057AQ is a stereo BTL output amplifier with DC
volume control. The device is designed for use in TVs and
monitors, but is also suitable for battery-fed portable
recorders and radios.
Missing Current Limiter (MCL)
A MCL protection circuit is built-in. The MCL circuit is
activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA
(typical 300 mA). This level of 100 mA allows for
single-ended headphone applications.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage 4.5 − 18 V
P
out
output power V
P
= 12 V; R
L
=16Ω 3.0 3.5 − W
V
P
= 12 V; R
L
=8Ω− 5.3 − W
V
P
= 15 V; R
L
=8Ω− 8 − W
G
v
voltage gain 39.5 40.5 41.5 dB
∆G
v
voltage gain control 68 73.5 − dB
I
q(tot)
total quiescent current V
P
= 12 V; R
L
= ∞−22 25 mA
THD total harmonic distortion P
o
= 0.5 W − 0.3 1 %
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA7057AQ DBS13P plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) SOT141-6