TAT9988
CATV GaN Power Doubler MMIC
Applications
HFC Nodes
CATV Line Amplifiers
Head End Equipment
40 Pin 5x7 mm QFN Package
Product Features
Excellent High Output Linearity
High Gain 24dB @ 1000MHz
50MHz – 1000MHz Bandwidth
Ultra-Low CSO/CTB/XMOD
Low Noise
Excellent Input/Output Match
Variable Bias Control
Compact Size
High Reliability
24V, 445mA
Functional Block Diagram
General Description
The TAT9988 is an ultra-linear, packaged GaAs/GaN
amplifier intended for output stage amplification in
CATV infrastructure applications.
The TAT9988 features a push-pull cascode design
which provides flat gain along with ultra-low
distortion, making it ideal for use in CATV distribution
systems requiring high output power capability.
The TAT9988 draws 445mA from a 24V supply and
exceeds the output linearity performance of
traditional GaAs-based amplifiers.
The TAT9988 allows users to adjust the bias current
and the bias voltage externally in order to optimize
output performance.
The TAT9988 is packaged in an industry standard 40
pin 5x7 mm
2
QFN package.
Standard SOT-115 Hybrid Modules are used as
orderable evaluation board assemblies for the
TAT9988. Please refer to the ordering information for
more details.
Pin Configuration
Pin No.
3
4
6,7
9
10
20
24
26
27
29
33
1,2,5,8,11-12, 21-
23,25, 28, 30-32,
13-19, 34-40
Label
Non-Inverting Amplifier Input
Linearizer Current-Adjust
Common Source Node
Amplifier Current-Adjust
Inverting Amplifier Input
Feedback to Inverting Input
Non-Inverting Amplifier Output
Output Device Gate Bias 1
Output Device Gate Bias 2
Inverting Amplifier Output
Feedback to Non-Inverting
Input
No connect
Ground
Ordering Information
Part No.
Description
TAT9988
CATV GaN Power Doubler MMIC
TAT8888
50-1000 MHz Hybrid Evaluation Board
TAT8888-1200 50-1200 MHz Hybrid Evaluation Board
Standard T/R size =1000 pieces on a 7” reel.
Disclaimer: Subject to change without notice
Preliminary Datasheet: Rev G 10-07-14
© 2014 TriQuint
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TAT9988
CATV GaN Power Doubler MMIC
Absolute Maximum Ratings
Parameter
Rating
Storage Temperature
-40 to +100°C
RF Input Power, CW, 75Ω, T=25
°
C
70 dBmV
Supply Voltage (V
DD
)
+30 V
Supply Current (I
DD
)
600 mA
Operation of this device outside the parameter ranges
given above may cause permanent damage.
Recommended Operating Conditions
Parameter
Supply Voltage (V
DD
)
Case Temperature
Junction Temperature, Tj
Min
-30
Typ
24
Max Units
+100
155
V
°C
°C
Electrical specifications are measured at specified test conditions.
Specifications are not guaranteed over all recommended
operating conditions.
Typical Performance − Push-Pull Configuration
(1)
Test conditions unless otherwise noted: V
DD
=+24 V, 75 Ω System, Base Temp=+35°C.
Parameter
Operating Frequency
Gain
Gain Slope
Gain Flatness
Input Return Loss
(2)
Output Return Loss
(2)
CSO
CTB
XMOD
CCN
Output IP3
Noise Figure
Supply Current, I
DD
Thermal Resistance, θ
jc
Conditions
Tested at 1000 MHz
Min
50
23
0.25
Typ
23.5
±0.5
18
19
-69
-75
-65
59
53
Max
1000
24.25
1.5
±0.8
Units
MHz
dB
dB
dB
dB
dB
dBc
dBc
dBc
dBm
dB
45 to 1003 MHz
Relative to Slope Line
79 channels NTSC
75 channels QAM, -6dB offset,
60 dBmV virtual output, 18dB Tilt
55
Pout= 19 dBm/tone, at 500 MHz
Δf = 6 MHz
410
Junction to case
-65
-69
3.5
445
5
470
dB
mA
°C/W
Notes:
1. Includes balun, board, and connector losses.
2. Return losses dependent on balun and transformer selection.
EVB Information – TAT8888 Hybrid Evaluation Board Assembly
SOT-115 Hybrid Module
Preliminary Datasheet: Rev G 10-07-14
© 2014 TriQuint
-
2 of 11
-
Disclaimer: Subject to change without notice
www.triquint.com
TAT9988
CATV GaN Power Doubler MMIC
EVB Information – TAT8888 Hybrid Evaluation Board PCB
Application Schematic – TAT8888 Hybrid Evaluation Board
41
1
2
40
39
38
37
24
25
36
35
34
33
3
32
LIN
4
31
5
30
1
5
1
2
4
2
3
3
1
4
3
2
2
6
VG BIAS
29
1
4
7
28
3
4
8
ISET
27
9
26
1
2
3
10
23
2
11
12
13
22
1
14
15
16
17
18
19
20
21
3
1
2
1
2
1
2
Notes:
1. See Evaluation Board PCB Information section for PCB material and stack-up.
2. Components are 0402 unless specified otherwise.
Preliminary Datasheet: Rev G 10-07-14
© 2014 TriQuint
-
3 of 11
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Disclaimer: Subject to change without notice
www.triquint.com
TAT9988
CATV GaN Power Doubler MMIC
Bill of Material – TAT8888 Hybrid Evaluation Board
Reference Des.
U1
C1, C2, C5, C6, C7, C8,
C11, C14, C17
C9, C10, C16
C12, C13
C15
L1, L2
L3, L4
L5
R2, R12
R3
R5
R6, R7, R8
R9, R10
R11, R14, R16
R13
R15
R17
R20
T1, T4
T2
T3
U2, U3
U4
D1
D2
Value
0.01 uF
0.5 pF
270 pF
0.3 pF
9.1 nH
220 Ω
0 Ω
2.40 kΩ
1.60 kΩ
Description
CATV GaN Power Doubler Module
Cap, Chip, 0402, X7R, 50V, 10%
Cap, Chip, 0402, COG, 50V, ± 0.1 pF
Manuf.
TriQuint
Various
Various
Various
Various
Murata
Murata
Various
Various
Various
Various
Various
Various
Various
Various
Various
Various
Various
Murata
Minntronix
Minntronix
or MACOM
TriQuint
NXP
OnSemi
OnSemi
Part Number
TAT9988
Cap, Chip, 0402, NPO, 50V, 5%
Cap, Chip, 0402, COG, 50V, ± 0.1 pF
Ind, Chip, 0402, 540mA, 5.5GHz, 5%
Bead, Chip, 0402, 700mA, 25%
Res, Chip, 0402, 0.1W, 1%
Res, Chip, 0402, 0.1W, 1%
Res, Chip, 0402, 0.1W, 1%
390 Ω Res, Chip, 0402, 0.1W, 1%
1.10 kΩ Res, Chip, 0402, 0.1W, 1%
750 Ω Res, Chip, 0402, 0.1W, 1%
15.0 kΩ Res, Chip, 0402, 0.1W, 1%
0 Ω
Res, Chip, 0402, 0.1W, 1%
10.0 kΩ Res, Chip, 0402, 0.1W, 1%
2.0 kΩ Res, Chip, 0402, 0.1W, 1%
10.0 Ω Res, Chip, 0402, 0.1W, 1%
1:1
Balun
2.6:1
Transformer
1:1
Balun
N/A
28V
4.7V
6.2V
ESD protection , IC
Transient Suppressor, 28V, SOD123W
Zener Diode, 4.7V, 2%, SOD523
Zener diode, 6.2V, 2%, SOD523
LQP15AN9N1J00D
BLM15EG221SN1D
DXW21BN7511SL
MRF20003
MRF20001
MABACT0059
TQP200002
PTVS28VS1UR
MM5Z4V7ST1G
MM5Z6V2ST1G
Preliminary Datasheet: Rev G 10-07-14
© 2014 TriQuint
-
4 of 11
-
Disclaimer: Subject to change without notice
www.triquint.com
TAT9988
CATV GaN Power Doubler MMIC
Performance Plots – TAT8888 Hybrid Evaluation Board
Test conditions unless otherwise noted: V
DD
=+24 V, 75 Ω System, Base Temp=+35°C.
Gain
Isolation
30
-5
25
-15
S21 (dB)
20
S12 (dB)
0
200
400
600
800
1000
1200
1400
-25
15
-35
10
-45
0
200
400
600
800
1000
1200
1400
Frequency (MHz)
0
Frequency (MHz)
0
Input Return Loss
Output Return Loss
-10
-10
S11 (dB)
-20
S22 (dB)
0
200
400
600
800
1000
1200
1400
-20
-30
-30
-40
-40
0
200
400
600
800
1000
1200
1400
Frequency (MHz)
-68
Frequency (MHz)
-70
CSO
CTB
-72
-74
CSO (dBc)
-76
CTB (dBc)
79 ch NTSC + 75 ch QAM (-6 dB offset) + 60 dBmV virtual output
at 1003 MHz, 18 dB tilt
-78
-80
-82
79 ch NTSC + 75 ch QAM (-6 dB offset) + 60 dBmV virtual output
at 1003 MHz, 18 dB tilt
-84
0
-86
500
600
0
100
200
300
400
100
200
300
400
500
600
Frequency (MHz)
63
62
61
Frequency (MHz)
CCN
CCN (dB)
60
59
58
57
56
0
79 ch NTSC + 75 ch QAM (-6 dB offset) + 60 dBmV virtual output
at 1003 MHz, 18 dB tilt
100
200
300
400
500
600
Frequency (MHz)
Preliminary Datasheet: Rev G 10-07-14
© 2014 TriQuint
-
5 of 11
-
Disclaimer: Subject to change without notice
www.triquint.com
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