Elektronische Bauelemente

SGP34119

Low Power Audio Amplifier

17-Dec-2009 Rev. A

Page 1 of 9

A

F

H

L

J

E

B

K

C

G

D

M

RoHS Compliant Product

A suffix of “-C” specifies halogen and lead-free

DESCRIPTION

The SGP34119 is a low power audio amplifier integrated circuit intended (primarily) for

telephone applications, such as in speakerphones. It provides differential speaker

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

and/or muting the input signal.

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

Low power-Down quiescent current (65

µA Typ)

Chip disable input to power down the IC

Drives a wide range of speaker loads (8.0

and up)

Output power exceeds 250mW with 32

speaker

Low total harmonic distortion (0.5% Typ.)

Gain adjustable from <0dB to >46dB for voice band

Requires few external components

BLOCK DIAGRAM AND SIMPLIFIED APPLICATION & PIN CONFIGURATION

DIP-8

Millimeter

Millimeter

REF.

Min.

Max.

REF.

Min.

Max.

A

9.017

10.16

G

0.381

-

B

-

10.92

H

1.143

1.778

C

2.921

4.953

J

2.540 TYP.

D

6.096

7.112

K

7.620

8.255

E

0.762

1.143

L

0.203

0.358

F

0.356

0.559

M

-

9.144