RMWD38001
37-40 GHz Driver Amplifier MMIC
PRODUCT INFORMATION
The RMWD38001 is a 4-stage GaAs MMIC amplifier designed as a 37 to 40 GHz Driver Amplifier for use in point to
point radios, point to multi-point communications, LMDS, and other millimeter wave applications. In conjunction
with other Fairchild Semiconductor amplifiers, multipliers and mixers it forms part of a complete 38 GHz
transmit/receive chipset. The RMWD38001 utilizes Fairchild Semiconductor's 0.25µm power PHEMT proceoss and
is sufficiently versatile to serve in a variety of driver amplifier applications.
Description
Features
ꢀ 4 mil substrate
ꢀ Small-signal gain 25 dB (typ.)
ꢀ 1dB compressed Pout 18 dBm (typ.)
ꢀ Voltage detector included to monitor Pout
ꢀ Chip size 3.0 mm x 1.2 mm
Absolute
Ratings
Parameter
Symbol
Value
Units
Positive DC voltage (+4 V Typical)
Negative DC voltage
Vd
Vg
Vdg
ID
+6
Volts
Volts
Volts
mA
-2
8
Simultaneous (Vd - Vg)
Positive DC Current
173
RF Input Power (from 50 Ω source)
Operating Baseplate Temperature
Storage Temperature Range
PIN
TC
+8
dBm
°C
-30 to +85
-55 to +125
126
T
°C
stg
Thermal Resistance
(Channel to Backside)
Rjc
°C/W
Electrical
Parameter
Frequency Range
Gate Supply Voltage (Vg)1
Min
37
Typ
Max Unit
40 GHz
Parameter
Drain Current at Saturated:
Pin = -5.5 dBm
Min
Typ
Max Unit
Characteristics
(At 25 °C 50Ω
system, Vd=+4 V,
Quiescent Current
(Idq)= 105 mA
120
13
mA
%
-0.4
V
Power Added Efficiency
(PAE): at P1 dB
Gain Small Signal at
Pin = -10 dBm
21
25
2
dB
dB
dB
Input Return Loss
(Pin = -10 dBm)
Gain Variation vs Frequency
Gain at 1dB Compression
15
dB
24
Output Return Loss
(Pin = -10 dBm)
Power Output at 1 dB
Compression
9
28
6
dB
dBm
dB
18
19
dBm
dBm
mA
OIP3
Power Output Saturated:
Pin = -5.5 dBm
Noise Figure
15.5
Detector Voltage
(Pout = +17 dBm)
Drain Current at
Pin = -10 dBm
0.1
V
105
120
Drain Current at 1 dB
Compression
mA
Note:
1. Typical range of gate voltage is -0.7 to -0.1 V to set Idq of 105 mA.
Characteristic performance data and specifications are subject to change without notice.
Revised March 14, 2001
Page 1