TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
1
CATV Ultra-Linear Power Amp
TGA2801B-SG
Key Features and Performance
Flat Gain
Ultra-Low Distortion (47dBm IP3 typ.)
Wide Bandwidth (40MHz-1GHz)
Low DC Power Consumption
Single Supply Bias (+12V)
Surface Mount Package
High Power Compression
(P1dB 28.5 dBm typ.)
Unconditionally Stable
Proven GaAs Technology
Description
The TriQuint TGA2801B is an ultra-linear, packaged
power amplifier which operates from 40MHz to 1000MHz.
The amplifier is packaged in a standard 16 lead SOIC
package. The amplifier provides a flat gain along with
ultra-low distortion. It also provides a high output power
with a low DC power consumption. This amplifier is
ideally suited for use in CATV distribution systems or
other applications requiring high output powers and
extremely low distortion.
Bottom View
Top View
Primary Applications
HFC Nodes
CATV Line Amplifiers
Head End Equipment
TGA2801B Gain
w/External Balun Effects Removed
9
10
11
12
13
14
0
200
400
600
800
1000
Frequency (MHz)
S21 (d
B)
TGA2801B Distortion
114ch 44dBmV Flat Vd=12V, Id=425mA
-80
-75
-70
-65
-60
-55
-50
0
100
200
300
400
500
600
700
800
Frequency (MHz)
D
i
s
t
ort
i
on (
d
B
c
)
CTB
XMOD
TGA2801B Noise Figure
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
100 200 300 400 500 600 700 800 900 100
0
Frequency (MHz)
NF
(d
B)
Evaluation Boards are available upon request.
Lead-free and RoHS compliant
Note: This device is early in the characterization process prior to finalizing all electrical specifications. Specifications are subject to
change without notice.
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
2
Maximum Ratings 1/
Symbol
Parameter
Min
Max
Units
Notes
V
DD
Bias Supply Voltage
0
15
V
I
DD
Bias Supply Current
615
mA
2/
P
IN
RF Input Power
70
dBmV
T
ASSY
Assembly Temperature (30 seconds max)
260
C
T
STG
Storage Temperature
-65
150
C
T
CASE
Package Operating Temperature (Heat Slug)
-40
100
C
1/
These values reflect maximum operable values for this device. Operating above the
recommended values may directly affect MTTF.
2/
Total Current
DC Specifications
Symbol
Parameter
Typ
Unit
V
DD
Bias Supply Voltage
12
V
I
DD
Bias Supply Current
425
mA
V
G1
Gate 1 Voltage (Pin 7)
0.33
V
V
G2
Gate 2 Voltage (Pin 2)
4.15
V
V
out1
RF Output 1 Voltage (Pin 14)
V
DD
V
V
out2
RF Output 2 Voltage (Pin 11)
V
DD
V
TGA2801B-SG
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
3
TGA2801B-SG
RF Specifications
T
A
=25
C, V
DD
=12V
Symbol
Parameter
Min
Typ
Max
Units
BW
Bandwidth
40
870
MHz
S
21
Gain 1/
12.0
dB
GF
Gain Flatness 1/
0.3
dB
NF
Noise Figure
2.6
dB
P
1dB
1dB Gain Compression @ 1GHz
28.5
dBm
IP
3
Two-Tone, Third-Order Intercept (625 &
700MHz)
47
dBm
CTB
Composite Triple Beat Distortion 2/
-71
dBc
CSO
Composite Second Order Distortion 2/
-71
dBc
XMOD
Cross Modulation 2/
-60
dBc
IRL
Input Return Loss 1/ 3/
22
dB
ORL
Output Return Loss 1/ 3/
22
dB
I
DD
Drain Current 4/
425
450
mA
1/
Measured performance of chip alone. Balun effects have been removed.
2/
112-Channel flat, +44dBmV/channel output
3/
Using application circuit on last page
4/
Increasing drain current will improve linearity of device
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
4
Typical Measured S-Parameters
Using Application Circuit
(includes effects of external baluns)
9
10
11
12
13
14
0
200
400
600
800
1000
Frequency (MHz)
S
21 (dB)
-25
-20
-15
-10
-5
0
0
200
400
600
800
1000
Frequency (MHz)
S12 (dB)
TGA2801B-SG
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
5
Typical Measured S-Parameters
Using Application Circuit
(includes effects of external baluns)
-50
-40
-30
-20
-10
0
0
200
400
600
800
1000
Frequency (MHz)
S
11 (dB)
-50
-40
-30
-20
-10
0
0
200
400
600
800
1000
Frequency (MHz)
S
22 (dB)
TGA2801B-SG
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
6
0.050
0.016
0.407
0.002
0.094
TGA2801B
LC
I
P
A
-
20
0
1
1
16
15
14
13
11
10
9
8
7
6
5
4
3
2
12
0.296
0.406
TG
A
2
801B
Mechanical Specifications
HEAT
SLUG
0.234
0.184
0.087
0.056
TGA2801B-SG
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
7
LC
I
P
A
-
2001
1
16
15
14
13
11
10
9
8
7
6
5
4
3
2
12
0.296
0.406
TGA
2801B
Pinout
Pin Description
Pin
Description
1
GND
2
Gate 2: Open Circuit
on PC Board
3
RF Input 1
4
GND
5
GND
6
RF Input 2
7
Gate 1: Current Adjust
R
1
= 274
to GND
8
GND
9
GND
10
V
DD
11
RF Output 2
12
GND
13
GND
14
RF Output 1
15
V
DD
16
GND
TGA2801B-SG
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
Advance Product Information
November 16, 2005
8
Component Description
Ref Description
C1
0.01
F Capacitor
C2
0.01
F Capacitor
C3 300pF
Capacitor
C4
300pF Capacitor
C5 - C8
1.0pF - 2.0pF
Capacitor 3/
L1
390nH Inductor
L2
390nH Inductor
R1
Current Adjust 2/
R
1
= open circuit
T1
Balun 1/
T2
Balun 1/
1/
Balun performance impacts amplifier return losses and gain. Best performance can be
achieved by winding 34 or 36 gauge bifilar wire around a small binocular core made from
low-loss magnetic material. Suitable wire may be obtained from MWS Wire Industries.
Core vendors include Ferronics, Fairrite, TDK, and Micrometals.
Alternatively, off-the-shelf baluns can be purchased from a number of vendors including
Mini-Circuits (ADTL1-10-75-1 (used for this data), ADTL1-18-75), M/A-COM (ETC1-1-
13), and Pulse Engineering (CX2071).
2/
Current can be adjusted by either changing the resistor value or forcing a voltage on pin 7.
3/
Tunes out balun inductance. Selected for best return loss.
Recommended Assembly
TGA2801B-SG
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