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参数资料
| 型号： | LV549-PLID |
| 元件分类： | 音频／视频放大 |
| 英文描述： | AUDIO AMPLIFIER, PDSO8 |
| 文件页数： | 1/5页 |
| 文件大小： | 141K |
| 代理商： | LV549-PLID |
LC549/LV549/LD549 DATA SHEET
High Power Class B
Output Stage
FEATURES
40dB of electrical gain
1.0 to 1.6 VDC supply operating range
current trim capability (R
T
)
high efficiency class B output stage
may be used with a linear or compression preamplfier
STANDARD PACKAGING
8 pin MICROpac (unavailable for LD549)
8 pin MINIpac
8 pin PLID
Chip (47 x 40 mils)
DESCRIPTION
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.
U.S. Patent No. 4,085,382
Patented in other countries
BLOCK DIAGRAM
4
3
2
7
1
6
5
8
RT
VB
OUTPUT 1
OUTPUT 2
INPUT
DEC 1 DEC 2
GND
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
Document No. 500 - 25 - 08
Revision Date: January 1996
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