DATA SHEET
N-CHANNEL GaAs HJ-FET
NE651R479A
0.4 W L-BAND POWER GaAs HJ-FET
DESCRIPTION
The NE651R479A is a 0.4 W GaAs HJ-FET designed for middle power transmitter applications for mobile
communication and wireless PC LAN systems. It is capable of delivering 0.4 W of output power (CW) with high linear
gain, high efficiency and excellent distortion and as a driver amplifier for our NE6510179A and NE6510379A.
Reliability and performance uniformity are assured by NEC’s stringent quality and control procedures.
FEATURES
• GaAs HJ-FET structure
• High output power : P
out
= +27.0 dBm TYP. @ VDS = 3.5 V, I
out
P
= +27.0 dBm TYP. @ VDS = 3.5 V, I
out
P
= +29.5 dBm TYP. @ VDS = 5.0 V, I
• High linear gain : GL = 14.0 dB TYP. @ VDS = 3.5 V, I
GL = 12.0 dB TYP. @ VDS = 3.5 V, I
GL = 12.0 dB TYP. @ VDS = 5.0 V, I
• High power added efficiency : 60 % TYP. @ VDS = 3.5 V, I
60 % TYP. @ VDS = 3.5 V, I
58 % TYP. @ VDS = 5.0 V, I
Dset
= 50 mA, f = 900 MHz, Pin = +13 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = +15 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = +15 dBm
Dset
= 50 mA, f = 900 MHz, Pin = +13 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = +15 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = +15 dBm
Dset
= 50 mA, f = 900 MHz, Pin = 0 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = 0 dBm
Dset
= 50 mA, f = 1.9 GHz, Pin = 0 dBm
ORDERING INFORMATION
Part Number Package Supplying Form
NE651R479A-T1 79A • 12 mm wide embossed taping
• Qty 1 kpcs/reel
Remark
Document No. P13670EJ2V0DS00 (2nd edition)
Date Published June 2000 NS CP(K)
Printed in Japan
To order evaluation samples, consult your NEC sales representative
(Part number for sample order: NE651R479A).
Caution Please handle this device at static-free workstation, because this is an electrostatic
sensitive device.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
The mark
••••
shows major revised points.
1998, 2000
ABSOLUTE MAXIMUM RATINGS (TA = +25 °°°°C)
Operation in excess of any one of these parameters may result in permanent damage.
Parameter Symbol Ratings Unit
NE651R479A
Drain to Source Voltage V
Gate to Source Voltage V
Drain Current I
Gate Forward Current I
Gate Reverse Current I
Total Power Dissipation P
Channel Temperature T
Storage Temperature T
DS
GSO
D
GF
GR
tot
ch
stg
8V
−
4V
1.0 A
10 mA
10 mA
2.5 W
150
−
65 to +150
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Test Conditions MIN. TYP. MAX. Unit
Drain to Source Voltage V
DS
Gain Compression Gcomp
Channel Temperature T
Recommended maximum Gain Compression is 3.0 dB at V
Note
ch
DS
> 4.2 V
ELECTRICAL CHARACTERISTICS
A
(T
= +25 °C, unless otherwise specified, using NEC standard test fixture.)
°
C
°
C
−
−−
−−
3.5 5.5 V
Note
5.0
+110
dB
°
C
Parameter Symbol Test Conditions MIN. TYP. MAX. Unit
Saturated Drain Current I
Pinch-off Voltage V
Gate to Drain Break Down Voltage BV
Thermal Resistance R
Output Power P
Drain Current I
Power Added Efficiency
Linear Gain
Notes 1.
Note 1
in
= 0 dBm
P
DC performance is 100 % testing. RF performance is testing several samples per wafer.
2.
η
Wafer rejection criteria for standard devices is 1 reject for several samples.
DSS
VDS = 2.5 V, VGS = 0 V
p
VDS = 2.5 V, ID = 14 mA
gdIgd
= 14 mA 12
th
Channel to Case
out
f = 1.9 GHz, VDS = 3.5 V, 26.0 27.0
D
Pin = +15 dBm, Rg = 1 kΩ,
addIDset
L
G
= 50 mA (RF OFF) 52 60
Note 2
−
−
2.0
0.7
−−
−−
−
−
−
30 50
220
12.0
−
0.4 V
°
C/W
−
−
dBm
mA
−
−
dB
A
V
%
2
Data Sheet P13670EJ2V0DS00
TYPICAL RF PERFORMANCE FOR REFERENCE (NOT SPECIFIED)
A
(T
= +25 °C, unless otherwise specified, using NEC standard test fixture.)
Parameter Symbol Test Conditions MIN. TYP. MAX. Unit
NE651R479A
Output Power P
Drain Current I
Power Added Efficiency
Note
Linear Gain
Note
in
= 0 dBm
P
out
f = 900 MHz, VDS = 3.5 V,
D
Pin = +13 dBm, Rg = 1 kΩ,
η
addIDset
L
G
= 50 mA (RF OFF)
TYPICAL RF PERFORMANCE FOR REFERENCE (NOT SPECIFIED)
A
(T
= +25 °C, unless otherwise specified, using NEC standard test fixture.)
Parameter Symbol Test Conditions MIN. TYP. MAX. Unit
Output Power P
Drain Current I
Power Added Efficiency
Note
Linear Gain
Note
in
= 0 dBm
P
out
f = 1.9 GHz, VDS = 5.0 V,
D
Pin = +15 dBm, Rg = 1 kΩ,
η
addIDset
L
G
= 50 mA (RF OFF)
TYPICAL CHARACTERISTICS (TA = +25 °°°°C)
−
−
−
−
−
−
−
−
27.0
230
60
14.0
29.5
350
58
12.0
−
−
−
−
−
−
−
−
dBm
mA
%
dB
dBm
mA
%
dB
OUTPUT POWER, DRAIN CURRENT
vs. INPUT POWER
30
VDS = 3.5 V
I
Dset
= 50 mA (RF OFF)
R
g
= 1 kΩ, f = 1.9 GHz
25
(dBm)
out
20
15
Output Power P
10
5
Remark
The graph indicates nominal characteristics.
P
out
Input Power Pin (dBm)
500
400
(mA)
D
300
I
D
200
Drain Current I
100
0
2520151050–5
Data Sheet P13670EJ2V0DS00
3