SGSC34119 Datasheet, PDF (1/9 Pages) SeCoS Halbleitertechnologie GmbH – Low Power Audio Amplifier

Elektronische Bauelemente
SGSC34119
Low Power Audio Amplifier
RoHS Compliant Product
A suffix of “-C” specifies halogen and lead-free
SOP-8
A
DESCRIPTION
The SGSC34119 is a low power audio amplifier integrated circuit intended (primarily) for
telephone applications, such as in speakerphones. It provides differential speaker
B
D
outputs to maximize output swing at low supply voltages (2.0V minimum). Coupling
capacitors to the speaker are not required. Open loop gain is 80 dB, and the closed
loop gain is set with two external resistors. A Chip Disable pin permits powering down ^J
HF
G
and/or muting the input signal.
E
C
L
K
FEATURES
Wide operating supply voltage range(2.0V to 16V),
allows telephone line powered applications
Low quiescent supply current(2.7mA type)
for battery powered applications
Drives a wide range of speaker loads (8.0Ω and up)
Low power-Down quiescent current (65µA Typ)
Chip disable input to power down the IC
Output power exceeds 250mW with 32Ω speaker
Low total harmonic distortion (0.5% Typ.)
Gain adjustable from <0dB to >46dB for voice band
Requires few external components
REF.
A
B
C
D
E
Millimeter
Min. Max.
4.80 5.00
5.80 6.20
1.35 1.75
3.80 4.00
1.25 1.50
REF.
G
H
J
K
L
Millimeter
Min. Max.
0.40 0.90
0.35 0.49
1.27 TYP.
0.10 0.25
0.19 0.25
BLOCK DIAGRAM AND SIMPLIFIED APPLICATION & PIN CONFIGURATION
17-Dec-2009 Rev. A
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