FRD3500X230 Datasheet, PDF (1/5 Pages) Filtronic Compound Semiconductors – 3.5 GHZ WIMAX REFERENCE DESIGN (1 W)

PRELIMINARY
FRD3500X230
3.5 GHZ WIMAX REFERENCE DESIGN (1 W)
• PERFORMANCE (3.5 GHz)
(802.16-2004 WiMAX Modulation)
♦ 30 dBm Typical Output Power, < 2.5% EVM
♦ 14 dB Typical Small-Signal Gain
♦ Class B Efficiency 14% (8V / 720 mA I_DQ)
♦ > 48 dBm 3^rd Order Intercept Point
♦ Low total components count
• DESCRIPTION AND APPLICATIONS
DEMO BOARD SIZE: 1 x 2 in. (2.54 x 5.08 cm.)
CONNECTORIZED VERSION SHOWN
The FRD3500X230 is a 2-stage, connectorized Reference Design that delivers a typical linear power
of 30 dBm with the 802.16-2004 modulation, while maintaining less than 2.5% EVM. The design
features a FPD4000AS driver stage, followed by a FPD10000AF power output stage. Both stages
are dual-biased to allow a range of bias conditions on each stage, allowing operation from Class B to
Class A. Board layout and components list are included.
• ELECTRICAL SPECIFICATIONS AT 22°C
Parameter
Operating Bandwidth
Small Signal Gain
Gain Flatness
Center Frequency (adjustable)
Power at 1dB Gain Compression
Class A - CW Single Tone
Power Gain at dB Gain Compression
Class A - CW Single Tone
Channel Power with 802.16-2004
2.5% max. EVM
Symbol
BW
SSG
∆G
f_CEN
P_1dB
G_1dB
P_CH
Channel Power with 802.16-2004
P_CH
2.5% max. EVM
Power-Added Efficiency
Eff
802.16-2004 modulation
Test Conditions
Class A / AB / B
Class A: V_DS = 10V; I_DQ = 1.6 A
Class A: V_DS = 10V; I_DQ = 1.6 A
Nominal bias conditions
V_DS = 10V; I_DQ = 1.6 A
V_DS = 10V; I_DQ = 1.6 A
Class AB Mode
V_DS = 10 V; I_DQ = 1.25 A
Class B Mode
V_DS = 8 V; I_DQ = 730 mA typ.
Class AB Mode
Class B Mode
Min Typ Max Units
200
MHz
14
dB
± 1.5
dB
3.4 3.5 3.6
37.5
dBm
13
dB
31.0 31.5
dBm
29 30
dBm
10
%
14
Operating Current at 30 dBm P_CH
I_OP
V_DD = 8.0 V; V_GG = -1.20 / -0.89 V
0.9
A
Nominal Drain Supply
Nominal Gate Voltages
For Class B Operation
V_DD
All operating conditions
V_GG
V_GG1 (1^st Stage)
V_GG2 (2^nd Stage)
8
V
-1.2
V
-0.89
V
Total DC Power (operating)
P_TOT
Class B at P_CH = 30 dBm
7.0
W
Phone: [phone]
Fax: [phone]
http:// www.filtronic.co.uk/semis
Revised: 8/10/05
Email: [e-mail]