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PDF LV549 Data sheet ( Hoja de datos )
| Número de pieza | LV549 | |
| Descripción | High Power Class B Output Stage | |
| Fabricantes | Gennum | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LV549 (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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High Power Class B
Output Stage
LC549/LV549/LD549 DATA SHEET
FEATURES
DESCRIPTION
• 40dB of electrical gain
• 1.0 to 1.6 VDC supply operating range
• current trim capability (RT)
• high efficiency class B output stage
• may be used with a linear or compression preamplfier
STANDARD PACKAGING
• 8 pin MICROpac (LC549)
• 8 pin MINIpac
• 8 pin PLID® (LC549, LD549)
• Chip (47 x 40 mils) (LC549, LD549)
The LC/LV/LD549 is an 8 pin, low voltage, push-pull audio
frequency output stage amplifier with a single unbalanced
input. The circuit utilizes two internal negative feedback
loops to stabilize the DC operating point for temperature
stability and to linearize the transfer function over a wide
dynamic range. The circuit operates near ideal class B
conditions resulting in low distortion and very low quiescent
current, required for extended battery life.
The LC549, LV549 and LD549 differ in only one respect;
the LV549 and LD549 are selected devices which are
capable of delivering from 10 mA to 41 mA and from 36 mA
to 75 mA of output current respectively. These values are
the maximum current drawn with both output stage transistors
in saturation. Thus the LD549 is capable of producing a
high output in a low impedance load, the LV549 is selected
to have lower peak currents, extending the life of the
battery.
RT VB
36
5
OUTPUT 1
2
INPUT
8
OUTPUT 2
41
DEC 1 DEC 2
7
GND
U.S. Patent No. 4,085,382
Patented in other countries
BLOCK DIAGRAM
Revision Date: January 2001
Document No. 500 - 25 - 09
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Japan Branch: A-302 Miyamae Village, 2-10-42 Miyamae, Suginami-ku Tokyo 168, Japan tel. (03) 3334-7700 fax: (03) 3247-8839
1 page  
12
LD
10
8
6 LC
4
2
-0 200 400 600 800 1k
LOAD RL (Ω)
Fig. 8 Power Output vs Load Resistance
at 7% Distortion RB = 0Ω
550
500
450
400
350
300
250 THD<5.2% AT VOUT=1.3 VRMS
200
1
10
RT (kΩ)
100
1K
Fig. 10 Quiescent Current vs Current Trim Resistor
41
40
39
38
37
36
0.01
VOUT=0.707 VRMS
0.1 1.0
10
FREQUENCY (kHZ)
Fig. 9 Voltage Gain vs Frequency
100
40.4
40.2
40.0
39.8
VOUT=0.707 VRMS
VB=1.3 V
39.6
0 4 8 12 16 20
SUPPLY VOLTAGE (V)
24 26
Fig. 11 Voltage Gain vs Battery Resistance
REVISION NOTES
Changes to standard packaging information
DOCUMENT IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
The product is in a development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY DATA SHEET
The product is in preproduction phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright January 1981 Gennum Corporation. All rights reserved. Printed in Canada.
5 500 - 25 - 09
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet LV549.PDF ] | |
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