GP34119 GTM, GP34119 Datasheet

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GP34119

Manufacturer Part Number
GP34119
Description
LOW POWER AUDIO AMPLIFIER
Manufacturer
GTM
Datasheet
www.DataSheet4U.com
G
Description
The GP34119 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
Package Dimensions
Block Diagram and Simplified Application & Pin Configuration
G
& Low Quiescent Supply Current (2.7mA Typ) for Battery Powered Applications
& Low Power-Down Quiescent Current (65uA Typ)
& Drives a Wide Range of Speaker Loads (8.0 Ł ‡and Up)
& Output Power Exceeds 250 mW with 32 Ł ‡Speaker
& Low Total Harmonic Distortion (0.5% Typ)
& Gain Adjustable from <0 dB to >46 dB for Voice Band
& Requires Few External Components
&
&
SEATING PLANE
Wide Operating Supply Voltage Range (2.0V to 16V), Allows Telephone Line Powered Applications
Chip Disable Input to Power Down the IC
P
P
3
3
4
4
1
1
1
1
b
Z
9
9
D
Z
e
L
L
O
O
W
W
P
P
O
O
W
SECTION Z - Z
W
GAUGE PLANE
E
E
b
R
R
DIP-8
A
A
U
U
D
D
I
I
O
O
A
A
M
M
REF.
A1
A2
b1
b2
b3
A
b
c
P
P
L
L
I
I
0.381
2.921
0.356
0.356
1.143
0.762
0.203
F
F
Min.
-
I
I
Millimeter
E
E
R
R
0.5334
Max.
4.953
0.559
0.508
1.778
1.143
0.356
-
REF.
HE
E1
c1
D
E
e
L
ISSUED DATE :2005/02/18
REVISED DATE :
0.203
9.017
6.096
7.620
2.921
Min.
-
Millimeter
2.540 BSC
Max.
0.279
10.16
8.255
10.92
3.810
7.112
1/8

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GP34119 Summary of contents

Page 1

... Description The GP34119 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 ...

Page 2

Maximum Ratings Rating Supply Voltage Maximum Output Current Maximum Voltage @ Vin, FC1, FC2, CD Applied Output Voltage Junction Temperature Note: ESD data available upon request. Recommended Operating Conditions Characteristics Supply Voltage ...

Page 3

Pin Function Description Symbol Pin Chip Disable-Digital input. A Logic “0” (<0.8V) sets normal operation. A Logic “1” ( 2V) sets the CD 1 power down mode. Input impedance is nominally 90k . A capacitor at this pin increases power ...

Page 4

... Figures 8 to 10, along with Figures (distortion curves), and a peak working load current of D 200 mA, define the operating range for the GP34119. The operating range is further defined in terms of allowable load power in Figure 14 for loads of 8 left (ascending) portion of each of the three curves is defined by the power level at which 10% distortion occurs. The center flat portion of each curve is defined by the maximum output current capability of the GP34119 ...

Page 5

Fig 3. Differential Gain versus Frequency (C2 = 5.0 F) Fig 5. Power Supply Rejection versus Frequency ( Fig 7. Power Supply Rejection versus Frequency ISSUED DATE :2005/02/18 REVISED DATE : ( Fig 4. Power ...

Page 6

Fig 9. Device Dissipation, 16 Load (f = 1.0kHz, AVD = 34 dB) Fig 11. Distortion versus Power ( 3.0kHz, AVD = 34 dB) Fig 13. Distortion versus Power ISSUED DATE :2005/02/18 REVISED DATE : Fig 10. Device ...

Page 7

Fig 15. Small Signal Response Fig 17 versus Load Current CC OH O1, O2 Fig 19. Power Supply Current ISSUED DATE :2005/02/18 REVISED DATE : Fig 16. Large Signal Response Fig 18 ...

Page 8

... Fig 25. Audio Amplifier with Bandpass portant Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. ...

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