CATV Infrastructure Push-Pull Amplifier
Applications
•
•
•
•
CATV Line Amplifiers
CATV System Amplifiers
Distribution Nodes
Green Applications
SOIC-16 Wide Package
TAT8858A1H
Product Features
75 Ω, 50-1000 MHz Bandwidth
GaAs pHEMT & MESFET Technology
User configurable gain: 27 – 34 dB
Integrated linearization
Choice of output device to optimize
cost/performance
•
Flexible bias voltage and current for optimum
efficiency
•
SOIC-16 Wide Package
•
•
•
•
•
Functional Block Diagram
Pin 1 Reference Mark
Out 1A
Lin Adj A
In 1A
Bias 1A
Bias 1B
In 1B
Lin Adj B
Out 1B
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Bias 2A
In 2A
Out 2A
Gate A
Gate B
Out 2B
In 2B
Bias 2B
Backside Paddle - RF/DC GND
General Description
The TAT8858A1H is a cost effective 75 Ω RFIC
Amplifier designed for use in high gain 24 V or 12 V
CATV applications up to 1000 MHz. It works with readily
available SMT baluns and transformers to provide a
highly flexible low cost replacement for traditional
hybrids.
Gain of the TAT8858A1H may be easily adjusted by
varying external components, allowing for a family of
push-pull hybrid solutions to be developed from a single
RFIC.
The TAT8858A1H provides integrated linearization to
improve the 3rd order distortion performance.
The TAT8858A1H may be protected against ESD and
transient surges with the TQP200002 and an output filter
network. Consult TriQuint for discussion.
The TAT8858A1H supports traditional 24 V and 12 V
supply voltages. Bias current may be adjusted to suit
particular requirements with standard or active biasing
approaches. Consult TriQuint for further discussion.
Data Sheet: Rev C 10/21/13
Pin Configuration
Pin No.
1
2
3
4
5
6
7
8
9
Label
OUT 1A
LIN ADJ A
IN 1A
BIAS 1A
BIAS 1B
IN 1B
LIN ADJ B
OUT 1B
BIAS 2B
Pin No. Label
10
11
12
13
14
15
16
IN 2B
OUT 2B
GATE B
GATE A
OUT 2A
IN 2A
BIAS 2A
Backside
RF/DC GND
Paddle
Ordering Information
Part No.
TAT8858A1H
TAT8858A1H-PCB 24V
TAT8858A1H-PCB 12V
Description
RFIC
50-1000 MHz Eval Board
50-1000 MHz Eval Board
Standard T/R size = 1000 pieces on a 7" reel
Disclaimer: Subject to change without notice
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CATV Infrastructure Push-Pull Amplifier
Absolute Maximum Ratings
Parameter
Storage Temperature
−65 to 150°C
TAT8858A1H
Min
−20
Recommended Operating Conditions
Parameter
Supply Voltage (V
CC
)
I
CC
T
CASE
6
T
J
(for >10 hours MTTF)
Rating
Typ
24
270
Max Units
+120
+150
V
mA
°C
°C
Operation of this device outside the parameter ranges
given above may cause permanent damage.
Electrical performance is measured and guaranteed under
conditions noted in the electrical specifications table.
Specifications are not guaranteed over all recommended
operating conditions.
Electrical Specifications
Test conditions unless otherwise noted:
V
CC
=+24V, Temp= +25°C, 75 Ω system.
Parameter
Operational Frequency Range
Gain
Input Return Loss
Output Return Loss
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Composite Triple Beat
(1)
Composite Second Order
(1)
Composite Intermodulation Noise
(1)
XMOD
Noise Figure
V
bias
(2)
I
DD
Thermal Resistance, θ
jc
(1)
Conditions
50-1000 MHz
Min
50
Typ
32
18
16
31
14
14
28
44
-69
-68
-70
-61
3.0
24
270
4.0
Max
1000
Units
MHz
dB
dB
dB
dB
dB
dB
dBm
dBm
dBc
dBc
dB
dBc
dB
V
mA
°C/W
50-1200 MHz
f=500 MHz
f1=225 MHz, f2=325 MHz,
Pout= +11 dBm/tone
50-1000 MHz
Module (junction to case)
Notes:
1. 79ch. NTSC + QAM (-6dB offset) to 1003.25 MHz flat input, 43dBmV/ch Vout at channel 2.
2. Active biasing in easily implemented with traditional dual-pnp approaches. Biasing at 12 V is also possible.
Data Sheet: Rev C 10/21/13
© 2013 TriQuint
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CATV Infrastructure Push-Pull Amplifier
TAT8858A1H-PCB 24V Schematic
J1
+24V
GND
R7
C7
L5
R1
R3
1
16
15
14
TAT8858A1H
L20
Vbias
C24
C25
R18
Vgate
L9
C9
C13
Ra
R19
R9
C11
L11
R20
C15
R5
C3
C31
R30
J1
RF
Input
4
1
2
3
2
3
L13
R13
L17
L7
L8
4
5
6
7
U1
TAT8857F3
13
12
11
10
9
R11
L19
R12
L14
R14
Vgate
2
1
L30
Vbias
C22
C2
RF
Output
T2
3
4
Cin
C4
R31
C30
R6
L18
8
R4
R2
R10
C12
L12
R21
Rb
C16
L6
C8
L10
R8
C10
C14
TAT8858A1H-PCB 24V Evaluation Board Layout
C9
R7
L9
L11
R1
C7
R5
C11
R9
C13
C15
L13
C3
C31
L5
Ra
R20
R3
R13
L30
C2
R31
C30
C4
L8
R12
R14
L19
T1
R30
L7
U1
R11
L17
T2
L18
C22
R4
L6
L14
C8
R2
C10
L10
R8
L12
R6
C12
R10
R21
C14
R19
R18
L20
C24
Data Sheet: Rev C 10/21/13
© 2013 TriQuint
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3 of 25
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C25
Rb
C16
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CATV Infrastructure Push-Pull Amplifier
Bill of Material – TAT8858A1H-PCB 24V
Reference Des.
n/a
U1
T1
T2
C30, C31
C15, C16
C3, C4, C7, C8, C11,
C12, C22
C13, C14
C9, C10, C2
C24, C25
Cin
L11, L12
L9, L10
L5, L6
L30
L17, L18
L20
L13, L14
L7, L8, L19
R7, R8
R1, R2
R3, R4
R18
R19
R5
R6
R9, R10
Ra, Rb
R13, R14
R11, R12
R20, R21
R30, R31
TAT8858A1H
Part Number
TAT8858
MABA-008483-CT1760
MABA-007681-CT2010
TRS2-1T-1+
C1005C0G1H2R2B
GRM1555C1H4R7BZ01D
Value
n/a
n/a
n/a
n/a
2.2 pF
4.7pF
0.01 uF
330 pF
470 pF
0.01 uF
0.2 pF
470 nH
12 nH
16 nH
1.0 nH
2.2 nH
900 nH
43 nH
600 Ω
36.0 Ω
20.0 kΩ
360 Ω
2.70 kΩ
2.00 kΩ
8.06 kΩ
18.2 kΩ
200 Ω
15.0 Ω
2.40 kΩ
33.0 Ω
24.0 Ω
12.0 Ω
Description
Printed Circuit Board
SOIC16W IC
TX Line Transformer, 3rd winding, 1:1
TX Line Transformer, Special, 2:1
CAP 0402, ± 0.1pF, 50V, NPO/COG
CAP 0402, ± 0.1pF, 50V, NPO/COG
CAP 0402, 10%, 50V, X7R
CAP 0402, 10%, 50V, X7R
CAP 0402, 5%, 50V, NPO/COG
CAP 0603, 10%, 50V, X7R
CAP 0402, ± 0.05pF, 25V
IND 0402, 5%
IND 0402, 5%
IND 0402, 5%
IND 0402, 5%
IND 0402, 5%
IND 1008, 10%
IND 0402, 5%
RES 0402, 300mA bead
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/10W
RES 0603, 1%, 75V, 1/10W
RES 0603, 1%, 75V, 1/10W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/16W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/16W
RES 0402, 1%, 50V, 1/16W
RES 1206, 1%, 200V, 1/4W
Manuf.
TriQuint
TriQuint
Macom
Macom
Mini-Circuits
TDK
Murata
various
Panasonic
TDK
AVX
AVX
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
Murata
various
various
various
various
various
various
various
various
various
various
various
various
various
ECJ-0EB1H331K
CGA2B2C0G1H471J
06035C103KAT2A
04023J0R2ABWTR
0402AF-471XJLU
0402CS-12NXJLW
0402CS-18NXJLW
0402CS-1N0XJLW
0402CS-2N2XJLW
1008AF-901XKLC
0402CS-43NXJLW
BLM15AG601SN1
Data Sheet: Rev C 10/21/13
© 2013 TriQuint
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CATV Infrastructure Push-Pull Amplifier
Performance Plots – TAT8858A1H-PCB 24V
Test conditions unless otherwise noted: V
CC
=+24 V, I
DD
= 270 mA, T
CASE
= +25
°
C, 75 Ω system
37
35
33
31
29
27
25
TAT8858A1H
Gain vs. Frequency
+85°C
+25°C
−20°C
-5
-10
-15
Input Return Loss vs. Frequency
+85°C
+25°C
−20°C
0
-5
-10
Output Return Loss vs. Frequency
+85°C
+25°C
−20°C
-20
-25
-30
-35
-40
|S22| (dB)
1200
|S11| (dB)
Gain (dB)
-15
-20
-25
-30
-35
0
200
400
Frequency (MHz)
600
800
1000
1200
0
200
400
Frequency (MHz)
600
800
1000
0
200
400
Frequency (MHz)
600
800
1000
1200
32
30
28
26
24
22
20
P1dB vs. Frequency
5
4
3
2
1
0
Noise Figure vs. Frequency
+85°C
+25°C
−20°C
85
80
75
CIN vs. Frequency
+85°C
+25°C
−20°C
+85°C
+25°C
−20°C
P1dB (dBm)
CIN (dB)
0
200
400
600
800
1000
1200
NF (dB)
70
65
60
55
0
200
400
Frequency (MHz)
600
800
1000
1200
Frequency (MHz)
0
100
200
Frequency (MHz)
300
400
500
600
-60
-65
-70
-75
-80
-85
-90
CTB vs. Frequency
-60
-65
-70
-75
-80
-85
-90
CSO vs. Frequency
-50
-55
XMOD vs. Frequency
+85°C
+25°C
-60
XMOD (dBc)
CSO (dBc)
CTB (dBc)
−20°C
+85°C
+25°C
−20°C
-65
-70
-75
-80
-85
+85°C
+25°C
−20°C
0
100
200
Frequency (MHz)
300
400
500
600
0
100
200
Frequency (MHz)
300
400
500
600
0
100
200
Frequency (MHz)
300
400
500
600
Data Sheet: Rev C 10/21/13
© 2013 TriQuint
-
5 of 25
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Disclaimer: Subject to change without notice
www.triquint.com
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