CATV Doubler – Hybrid RFIC
Applications
•
•
•
•
CATV Line Amplifiers
CATV System Amplifiers
Distribution Nodes
Green Applications
TAT8857A1H
SOIC-16 Wide Package
Product Features
75 Ω, 40-1000
MHz Bandwidth
GaAs pHEMT & MESFET Technology
User configurable gain: 21 - 27 dB
Integrated linearization
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 TAT8857A1H
is a cost effective 75 Ω RFIC
Amplifier designed for use in Doubler 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 TAT8857A1H may be easily adjusted by
varying external components, allowing for a family of
Doubler solutions to be developed from a single RFIC.
The TAT8857A1H provides integrated linearization to
improve the 3
rd
order distortion performance.
The TAT8857A1H may be protected against transient
surges with the TQP200002 and an output high pass
filter network. Consult TriQuint for discussion.
The TAT8857A1H 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.
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.
10
11
12
13
14
15
16
Backside
Paddle
Label
IN 2B
OUT 2B
GATE B
GATE A
OUT 2A
IN 2A
BIAS 2A
RF/DC GND
Ordering Information
Part No.
TAT8857A1H
TAT8857A1H-PCB 24V
TAT8857A1H-PCB 12V
Description
CATV Doubler RFIC
40-1000 MHz Eval. Board
40-1000 MHz Eval. Board
Standard T/R size = 1000 pieces on a 7” x 12mm reel
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
-
1 of 12
-
Disclaimer: Subject to change without notice
www.triquint.com
CATV Doubler – Hybrid RFIC
Absolute Maximum Ratings
Parameter
Storage Temperature
−65
to 150°C
TAT8857A1H
Min
−20
Recommended Operating Conditions
Parameter
Supply Voltage (V
CC
)
I
CC
T
CASE
T
J
(for >10
6
hours MTTF)
Rating
Typ
24
350
Max Units
+115
+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
Test Frequency
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Conditions
Min
40
Typ
40
25
18
17
31
52
-73
-74
60
-68
4.0
24
350
3.4
Max
1000
Units
MHz
MHz
dB
dB
dB
dBm
dBm
dBc
dBc
dB
dBc
dB
V
mA
°C/W
Composite Triple Beat
(1)
Composite Second Order
(1)
Composite Intermodulation Noise
(1)
XMOD
(1)
Noise Figure
V
bias
I
DD (2)
Thermal Resistance,
θ
jc
Module (junction to case)
f= 500 MHz
f1=225 MHz, f2=325 MHz,
Pout= +15 dBm/tone
Notes:
1. 79ch. NTSC + QAM (6dB offset) to 1003.25 MHz, 13dB uptilt from 55.25 MHz to 1003.25 MHz, 40 dBmV/ch at 55.25 MHz and
the equivalent of 53 dBmV/ch at 1003.25 MHz.
2. Active biasing is easily implemented with traditional dual-pnp approaches. Biasing at 12 V is also possible.
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
-
2 of 12
-
Disclaimer: Subject to change without notice
www.triquint.com
CATV Doubler – Hybrid RFIC
TAT8857A1H-PCB Evaluation Board V
CC
= 24V
J1
+24V
GND
R7
C7
L9
C9
Vgate
C13
C15
R19
C24
C25
R18
L20
Vbias
TAT8857A1H
R3
R1
L5
C27
1
R9
C11
L11
16
15
14
R20
L15
R5
C3
C5
R22
J1
RF
Input
4
1
2
3
2
3
L13
R13
R15
L17
C17
L7
L8
4
5
6
7
U1
TAT8857F3
13
12
11
10
9
R11
L19
R12
L14
R14
R16
C18
Vgate
2
1
L30
Vbias
C22
C2
RF
Output
T2
3
4
R23
C4
C6
R6
L18
8
L6
C28
R2
R10
C12
L12
R21
L16
R4
C8
L10
R8
C10
C14
C16
TAT8857A1H-PCB Evaluation Board Layout V
CC
= 24V
C27
L11
R1
C9
C3
R22
R3
C13
R20
L15
L13
R13
C15
L9
R7
C7
C5
R5
R9
C11
L5
C17
R15
L17
L30
C2
R14
C6
L6
C4
C10
L10
R8
L14
C28
L12
C8
R2
R6
R10
C16
C12
R21
C14
R19
R18
L20
C24
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
-
3 of 12
-
C25
R4
L16
R16
L18
R23
L8
R12
L19
T1
L7
U1
R11
T2
C22
C18
Disclaimer: Subject to change without notice
www.triquint.com
CATV Doubler – Hybrid RFIC
Bill of Material – TAT8857A1H-PCB V
CC
= 24V
Reference Des.
n/a
U1
T1
T2
C5, C6
C27, C28
C17, C18
C15, C16
C24, C25
C2, C3, C4, C7, C8,
C11, C12
C9, C10
C13, C14
C22
L11, L12
L15, L16
L17, L18
L30
L20
L5, L6
L13, L14
L7, L8, L19
L9, L10
R1, R2
R11, R12
R13, R14
R18
R19
R3, R4
R5, R6
R15, R16
R7, R8
R9, R10
R20, R21
R22, R23
TAT8857A1H
Part Number
1077901
TAT6281
MABA-009210-CT1760
MABA-007681-CT2010
TRS2-1T-1+
C1005C0G1H1R8B
ECD-G0ER709
GRM1555C1HR50CZ01D
GRM1555C1H2R2CZ01D
06035C333KAZ2A
Value
n/a
n/a
n/a
n/a
1.8 pF
0.7 pF
0.5 pF
2.2 pF
0.033 uF
0.01 uF
82 pF
330 pF
0.01 uF
470 nH
9 nH
8.2 nH
3.9 nH
900 nH
15 nH
27 nH
600 Ω
82 nH
27 kΩ
18.2 Ω
1.3 kΩ
2.7 kΩ
2.0 kΩ
390 Ω
8.06 kΩ
43 Ω
180 Ω
100 Ω
33 Ω
5.1 Ω
Description
Printed Circuit Board
TAT8857 CATV Doubler, SOIC-16
TX Line Transformer, 3rd winding, 1:1
TX Line Transformer, Special, 2:1
CAP 0402, ± 0.1pF, 50V, NPO
CAP 0402, ± 0.075pF, 25V, NPO
CAP 0402, ± 0.25pF, 50V, NPO/COG
CAP 0402, ± 0.25pF, 50V, NPO/COG
CAP 0603, 10%, 50V, X7R
CAP 0402, 10%, 50V, X7R
CAP 0402, 5%, 50V, NPO/COG
CAP 0402, 5%, 50V, NPO/COG
CAP 0603, 10%, 50V, X7R
IND 0402, 5%
IND 0402, 5%
IND 0402, 5%
IND 0402, 5%
IND 1008, 10%
IND 0402, 5%
IND 0402, 5%
RES 0402, 300mA bead
IND 0402, 5%
RES 0402, 1%, 50V, 1/16W
RES 0402, 1%, 50V, 1/10W
RES 0402, 1%, 50V, 1/16W
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, 1/10W
RES 0402, 1%, 50V, 1/16W
RES 0402, 1%, 50V
RES 0402, 1%, 50V, 1/16W
RES 1210, 5%, 1/2W
Manuf.
TriQuint
TriQuint
Macom
Macom
Mini-Circuits
TDK
Panasonic
Murata
Murata
AVX
various
Murata
TDK
AVX
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
CoilCraft
Murata
CoilCraft
various
various
various
various
various
various
various
various
various
various
various
various
GRM1555C1H820JZ01D
CGA2B2C0G1H331J
06035C103KAT2A
0402AF-471XJLU
0402CS-9NXJLW
0402CS-8N2JLW
0402CS-3N9XJLW
1008AF-901XKLC
0402CS-15NXJL
0402CS-27NXJL
BLM15BD601SN1
0402CS-82NXJLU
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
-
4 of 12
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Disclaimer: Subject to change without notice
www.triquint.com
CATV Doubler – Hybrid RFIC
Performance Plots – TAT8857A1H-PCB V
CC
= 24V
Test conditions unless otherwise noted: V
CC
=+24 V, I
DD
= 350 mA, T
CASE
= +25
°
C, 75 Ω system
30
28
26
TAT8857A1H
Gain vs. Frequency
+85°C
+25°C
−40°C
0
-5
-10
Input Return Loss vs. Frequency
0
-5
Output Return Loss vs. Frequency
+85°C
+25°C
-10
|S22| (dB)
|S11| (dB)
Gain (dB)
-15
-20
-25
-30
+85°C
+25°C
−40°C
−40°C
24
22
20
18
-15
-20
-25
-30
-35
-35
0
200
400
600
800
1000
1200
1400
-40
0
200
400
600
800
1000
1200
1400
Frequency (MHz)
Frequency (MHz)
0
200
400
Frequency (MHz)
600
800
1000
1200
1400
32
31
30
29
28
27
26
P1dB vs. Frequency
+85°C
+25°C
−40°C
7
6
5
Noise Figure vs. Frequency
70
68
66
64
62
60
58
56
54
52
1400
50
0
100
CIN vs. Frequency
P1db (dBm)
3
2
1
0
+85°C
+25°C
−40°C
CIN (dB)
NF (dB)
4
+85°C
+25°C
−40°C
0
200
400
Frequency (MHz)
600
800
1000
1200
0
200
400
Frequency (MHz)
600
800
1000
1200
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
-60
-65
-70
-75
-80
XMOD vs. Frequency
XMOD (dBc)
CSO (dBc)
CTB (dBc)
+85°C
+25°C
−40°C
+85°C
+25°C
−40°C
+85°C
+25°C
−40°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
Notes:
1. CIN, CTB, CSO, XMOD test conditions: 79ch. NTSC + QAM (6dB offset) to 1003.25MHz
13dB uptilt from 55.25MHz to 1003.25MHz,
40dBmV/ch at 55.25 MHz and the equivalent of 53 dBmV/ch at 1003.25 MHz
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
-
5 of 12
-
Disclaimer: Subject to change without notice
www.triquint.com
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