Dual N-channel dual gate MOS-FET
Description
BF1205C
Dual N-channel dual gate MOS-FET
Rev.
01 — 18 May 2004 Product data sheet
1.
Product profile
1.
1 General description
The BF1205C is a combination of two 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 has a SOT363 micro-miniature plastic package.
CAUTION This device is sensitive to electrostatic discharge (ESD).
Therefore care should be taken during transport and handling.
MSC895
1.
2 Features
s Two low noise gain controlled amplifiers in a single package; one with a fully integrated bias and one with a partly integrated bias s Internal switch to save external components s Superior cross-modulation performance during AGC s High forward transfer admittance s High forward transfer admittance to input capacitance ratio.
1.
3 Applications
s Gain controlled low noise amplifiers for VHF and UHF applications with 5 V supply voltage x digital and analog television tuners x professional communication equipment.
Philips Semiconductors
BF1205C
Dual N-channel dual gate MOS-FET
1.
4 Quick reference data
Table 1: Quick reference data Per MOS-FET unless otherwise specified.
Symbol Parameter VDS ID Ptot yfs drain-source voltage drain current (DC) total power dissipation forward transfer admittance Ts ≤ 107 °C f = 1 MHz amplifier a; ID = 19 mA amplifier b; ID = 13 mA Cig1-ss input capacitance at gate 1 f = 1 MHz amplifier a amplifier b Crss NF Xmod reverse transfer capacitance f = 1 MHz noise figure cross-modulation amplifier a; f = 400 MHz amplifier b; f = 800 MHz input level for k = 1% at 40 dB AGC amplifier a amplifier b Tj
[1]
[1]
Conditions
Min 26 28 -
Typ 31 33 2.
2 2.
0 20 1.
3 1.
4
Max Unit 6 30 180 41 43 2.
7 2.
5...
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