Block Diagram - Harman Kardon AVR 360 Service Manual

harman/kardon
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 75ΩDriver Circuit (2-system drive)
Power Save Circuit
Bipolar Technology
Package Outline

BLOCK DIAGRAM

PowerSave
Ver.7
±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 Ω
6dB
Driver
AMP
6dB 75 Ω
AMP Driver
6dB 75 Ω
AMP Driver
REF
AVR 360/230 Service Manual
NJM2581
NJM2581D NJM2581M
+
V 1
14
13 VOUT1
+
12
V 2
VOUT2
11
+
10 V 3
9 VOUT3
8
GND
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