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BF1205 Datasheet(PDF) 2 Page - Quanzhou Jinmei Electronic Co.,Ltd.

No. de pieza BF1205
Descripción Electrónicos  Dual N-channel dual gate MOS-FET
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Fabricante Electrónico  JMNIC [Quanzhou Jinmei Electronic Co.,Ltd.]
Página de inicio  http://www.jmnic.com
Logo JMNIC - Quanzhou Jinmei Electronic Co.,Ltd.

BF1205 Datasheet(HTML) 2 Page - Quanzhou Jinmei Electronic Co.,Ltd.

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2003 Sep 30
2
Philips Semiconductors
Product specification
Dual N-channel dual gate MOS-FET
BF1205
FEATURES
• Two low noise gain controlled amplifiers in a single
package. One with a fully integrated bias and one with a
partly integrated bias
• Internal switch reduces the number of external
components
• Superior cross-modulation performance during AGC
• High forward transfer admittance
• High forward transfer admittance to input capacitance
ratio.
APPLICATIONS
• Gain controlled low noise amplifiers for VHF and UHF
applications with 5 V supply voltage, such as digital and
analog television tuners and professional
communications equipment.
DESCRIPTION
The BF1205 is a combination of two equal dual gate
MOS-FET amplifiers with shared source and gate 2 leads
and an integrated switch. The integrated switch is
operated by the gate 1 bias of amplifier b. The source and
substrate are interconnected. Internal bias circuits enable
DC stabilization and a very good cross-modulation
performance during AGC. Integrated diodes between the
gates and source protect against excessive input voltage
surges. The transistor is encapsulated in SOT363
micro-miniature plastic package.
PINNING - SOT363
PIN
DESCRIPTION
1
gate 1 (a)
2
gate 2
3
gate 1 (b)
4
drain (b)
5
source
6
drain (a)
handbook, halfpage
12
3
654
Top view
MGX429
AMP
a
d (a)
s
d (b)
g1 (a)
g2
g1 (b)
AMP
b
Fig.1 Simplified outline and symbol.
Marking code: L4-.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
BF1205
Plastic surface mounted package; 6 leads
SOT363


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