Datasheet v3.0
1
ABSOLUTE MAXIMUM RATING :
PARAMETER
Drain-Source Voltage
Gate-Source Voltage
Drain-Source Current
Gate Current
SYMBOL
VDS
TEST CONDITIONS
-3V < VGS < +0V
ABSOLUTE MAXIMUM
8V
VGS
0V < VDS < +8V
-3V
IDS
For VDS < 2V
IDSS
IG
Forward or reverse current
Under any acceptable bias state
Under any acceptable bias state
Non-Operating Storage
See De-Rating Note below
Under any bias conditions
2 or more Max. Limits
15mA
2
RF Input Power
PIN
350mW
175°C
-55°C to 150°C
2.3W
Channel Operating Temperature
Storage Temperature
TCH
TSTG
PTOT
Comp.
Total Power Dissipation
Gain Compression
5dB
3
Simultaneous Combination of Limits
Notes:
1TAmbient = 22°C unless otherwise noted; exceeding any one of these absolute maximum ratings may cause
permanent damage to the device
2Max. RF Input Limit must be further limited if input VSWR > 2.5:1
3Users should avoid exceeding 80% of 2 or more Limits simultaneously
4Total Power Dissipation defined as: PTOT ≡ (PDC + PIN) – POUT
,
where PDC: DC Bias Power, PIN: RF Input Power, POUT: RF Output Power
Total Power Dissipation to be de-rated as follows above 22°C:
PTOT= 2.3 - (0.016W/°C) x TPACK
where TPACK= source tab lead temperature above 22°C
(coefficient of de-rating formula is the Thermal Conductivity)
Example: For a 65°C carrier temperature: PTOT = 2.3W – (0.016 x (65 – 22)) = 1.61W
BIASING GUIDELINES:
•
Active bias circuits provide good performance stabilization over variations of operating
temperature, but require a larger number of components compared to self-bias or dual-biased.
Such circuits should include provisions to ensure that Gate bias is applied before Drain bias.
Dual-bias circuits are relatively simple to implement, but will require a regulated negative voltage
supply for depletion-mode devices.
For standard class A operation, a 50% of IDSS bias point is recommended. A small amount of
RF gain expansion prior to the onset of compression is normal for this operating point. A class
A/B Bias of 25-33% of IDSS to achieve better OIP3, and Noise Figure performance is suggested.
•
•
2
Specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Tel: +44 (0) 1325 301111
Fax: +44 (0) 1325 306177
Email: sales@filcs.com
Website: www.filtronic.com
FILTRONIC [ FILTRONIC COMPOUND SEMICONDUCTORS ]
