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PDF NJM2594 Data sheet ( Hoja de datos )
| Número de pieza | NJM2594 | |
| Descripción | Modulation / DMP8 / SSOP8 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJM2594
www.DataSheet4U.com
DOUBLE BALANCED MODULATION / DEMODULATION
! GENERAL DESCRIPTION
The NJM2594 is a double balanced modulation/demodulation circuit,
applied to suppressed carrier modulation, amplitude modulation,
synchronous detection, FM or PM detection circuit.
Single input voltage and simplification of external circuit offers
wider applications.
! FEATURES
" Operating Voltage
" Excellent Carrier Suppression
" Simplification of External Circuit
" Bipolar Technology
" Package Outline
4.5 to 9V
DMP8, SSOP8
! PACKAGE OUTLINE
NJM2594M
NJM2594V
! BLOCK DIAGRAM
CARRIER
SIGNAL
NC INPUT BYPASS INPUT
8765
123 4
V+ OUTPUT1 OUTPUT2 GND
BLOCK DIAGRAM
-1-
1 page  
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! APPLICATION CIRCUIT
" Emitter - follower output
NJM2594
Signal Input
Fs
Carrier Input
Fc
Cs
5
Cb
6
Cc
7
Rc=
350Ω
V+
4
3
Ii
0.01uF
Emitter-
follower
Output
RL
2 Open
RL~ V+-1.7
Ii
Ground or
Open
8
1 V+
0.022uF
APPLICATION CIRCUIT 1
" Collector output
Signal Input
Fs
Carrier Input
Fc
Cs
Cb
Cc
5
6
7
Rc=
350Ω
V+
4
3 Open
0.01uF
2
Collector
Output
Ground or
Open
8
1 V+
0.022uF
APPLICATION CIRCUIT 2
" The impedance of AC coupling capacitor connected to input / output terminals should be adequately low at the
frequency of input / output signals, respectably.
" The impedance of base-coupling capacitor connected to BYPASS terminal should be adequately low against
the both of input/output signals to keep better performance on leakage and distortion characteristics.
" In case of APPLICATION CIRCUIT 1, idle (emitter) current may be supplied by adding an external resistor
between OUTPUT2 (pin3) and ground.
The relation of idle current Ii and external resistance RL is determined by :
RL~ V+-1.7
Ii
! Note that there is some degradation in intermodulation characteristics with increasing the external resistance
RL, or decreasing a load impedance of Emitter-follower output.
" The level of output signal comes constant at carrier input signal level over 100mV ( see Typical Characteristics).
-5-
5 Page 
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NJM2594
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 11 -
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NJM2594.PDF ] | |
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