Harman Kardon AVR240 Service Manual page 130

AVR240
DUAL SUPPLY WIDE BAND 3ch VIDEO AMPLIFIER
GENERAL DESCRIPTION
The NJM2581 is a dual supply voltage wide band 3ch
video amplifier. It is suitable for Y, Pb, and Pr signal because
frequency range is 50MHz.
The NJM2581 is suitable for Set Top Box, AV amplifier,
and other high quality AV systems.
FEATURES
Operating Voltage
Wide frequency range
Internal 6dB Amplifier
Internal 75 Driver Circuit (2-system drive)
Power Save Circuit
Bipolar Technology
Package Outline
BLOCK DIAGRAM
PowerSave
±4.5 to ±5.5V
50MHz at 0dB typ.
DIP14, DMP14
VIN1 1
BIAS
VEE1 2
3
VIN2
BIAS
VEE2 4
VIN3 5
BIAS
VEE3 6
7
PACKAGE OUTLINE
75
6dB
Driver
AMP
6dB 75
AMP Driver
6dB
75
AMP Driver
REF
130
harman/kardon
NJM2581
NJM2581D NJM2581M
+
V 1
14
13 VOUT1
+
12
V 2
VOUT2
11
+
10 V 3
9 VOUT3
8
GND