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Product Data Sheet
January 15, 2008
CATV TIA/Gain Block
TGA2803-SM
Key Features and Performance
•
•
•
•
TGA
2803
Top View
Frequency Range: 40MHz - 1GHz
20 dB Flat Gain
800 Ω Transimpedance *
<5pA/ √Hz Equivalent Input Noise
Current *
1.5 dB 75 Ω Noise Figure
Ultra-Low Distortion (45dBm IP3 typ.)
Low DC Power Consumption
Single Supply Bias (+8V)
Proven GaAs Technology
20L Package Dimension: 4.0 x 4.0 x 0.9
mm
•
•
•
•
•
•
Bottom View
Product Description
* Includes 1:1 balun, No photodiode or auto-
The TriQuint TGA2803-SM is an ultralinear, packaged TIA/Gain Block
which operates from 40MHz to
1000MHz.
transformer
Primary Applications
•
•
•
The TGA2803-SM typically provides
flat gain along with ultra-low distortion.
It also provides high output power with
low DC power consumption.
HFC Nodes
CATV Line Amplifiers
Head End Equipment
75 Ω Output TOI
55
51
OTOI (dBm)
This amplifier is ideally suited for use
in CATV distribution systems or other
applications requiring extremely low
noise and distortion.
47
43
39
Demonstration Boards are available.
35
0
Lead-free and RoHS compliant.
300
400
500
600
700
800
900
Input Referred Current Noise
with High Impedance source
6
Noise Current(pA/rt(Hz))
20
Gain (dB)
200
Frequency (MHz)
Typical 75 Ω Gain
w/External Balun Losses Removed
24
100
16
12
8
4
0
5
4
3
2
1
0
0
200
400
600
800
Frequency (MHz)
1000
1200
0
200
400
600
800
1000
1200
F req u en cy (M H z)
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
1
Product Data Sheet
January 15, 2008
TGA2803-SM
Table I
Maximum Ratings 1/
Symbol
Parameter
Min
Max
Units
0
15
V
Notes
VDD
Bias Supply Voltage
IDD
Bias Supply Current
500
mA
1/ 2/
PIN
RF Input Power
77
dBmV
3/
Assembly Temperature (30 seconds max)
260
°C
TCH
Channel Temperature
150
°C
TSTG
Storage Temperature
150
°C
TASSY
-65
1/
These values reflect maximum operable values for this device. Operating above the
recommended values may directly affect Tm.
2/
Total Current
3/
Total Input Power
Table II
DC Specifications
Symbol
Parameter
Typ
Unit
VDD
Bias Supply Voltage
8
V
IDD
Bias Supply Current
350
mA
VG1
Gate 1 Voltage (Pin 19)
0.90
V
VG2
Gate 2 Voltage (Pin 7)
2.66
V
Vout1
RF Output 1 Voltage (Pin 14/15)
VDD
V
Vout2
RF Output 2 Voltage (Pin 11/12)
VDD
V
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2
Product Data Sheet
January 15, 2008
TGA2803-SM
Table III
RF Specifications 1/
TA=25°C, VDD=8V
Symbol
Parameter
Min
Max
Units
Note
1000
MHz
26
dB
2/
BW
Bandwidth
40
S21
Power Gain
17
GF
Gain Flatness
± 0.3
dB
2/
NF
Noise Figure
1.5
dB
2/
TZ
Transimpedance
800
Ω
Equivalent Input Current Noise
5
pA/rtHz
IP3
Two-Tone, Third-Order Intercept (450 MHz)
46
dBm
IP3
Two-Tone, Third-Order Intercept (750 MHz)
42
dBm
2/ 3/
dBc
5/
In
nd
rd
20
39
th
Harmonics (2 , 3 , 4 ) (40 to 500MHz)
-64
IRL
Input Return Loss
16
dB
ORL
Output Return Loss
20
dB
Drain Current
350
ID
P_sat
1/
2/
3/
4/
5/
6/
Typ
Saturated Output Power (750 MHz)
26
-58
500
28
mA
4/
6/
dBm
Using electrical application circuit on pg. 8
1:1 Balun losses have been removed from the measurement
Measured at 16dBm output power per tone
Measured with open-circuited input
Measured at 15dBm fundamental frequency output power
Increasing drain current will improve linearity of device
TABLE IV
THERMAL INFORMATION
Parameter
θJC Thermal Resistance
(channel to backside of
package)
Test Conditions
Vd = 8 V
Id = 350 mA
Pdiss = 2. 8 W
TCH
(oC)
θJC
(°C/W)
TM
(HRS)
128
15.4
7.2 E+6
Note: Worst case condition with no RF applied, 100% of DC power is
dissipated. Package backside temperature @ 85 °C
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
3
Product Data Sheet
January 15, 2008
TGA2803-SM
Typical Measured S-Parameters (75 Ω )
Using Application Circuit
(includes effects of external baluns)
0
-4
-8
S11(dB)
-12
-16
-20
-24
-28
-32
-36
-40
0
200
400
600
800
1000
1200
Frequency (MHz)
0
24
-5
-10
16
S12 (dB)
S21 (dB)
20
12
8
-15
-20
-25
-30
4
-35
-40
0
0
200
400
600
800
1000
0
1200
200
400
600
800
1000
1200
Frequency (MHz)
Frequency (MHz)
0
-5
S22 (dB)
-10
-15
-20
-25
-30
-35
-40
0
200
400
600
800
1000
1200
Frequency (MHz)
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
4
Product Data Sheet
January 15, 2008
TGA2803-SM
Typical Measured Performance
Using Application Circuit
(includes effects of external baluns)
55
OTOI (dBm)
51
47
43
39
35
0
100
200
300
400
500
600
700
800
900
Frequency (MHz)
Input balun losses removed
5
4.5
5
4
Noise Figure(dB)
Noise Current(pA/rt(Hz))
6
4
3
2
3.5
3
2.5
2
1.5
1
1
0.5
0
0
0
200
400
600
800
Frequency (M Hz)
1000
1200
0
200
400
600
800
1000
1200
Frequency(MHz)
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
5
Product Data Sheet
January 15, 2008
TGA2803-SM
Mechanical Specifications
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
6
Product Data Sheet
January 15, 2008
TGA2803-SM
Pinout
TGA
2803
Top Side
Bottom Side
Dot indicates Pin 1
Pin
Description
Pin
Description
1
RF Input 1
11
RF Output 2
2
RF Input 1
12
RF Output 2
3
GND
4
RF Input 2
14
RF Output 1
5
RF Input 2
15
RF Output 1
6
NC
16
NC
7
VG2 (Optional)
17
VDD (choked)
8
VDD
18
VDD
9
VDD (choked)
19
VG1 (Optional)
10
Isense 1/
20
NC
13, 21
GND
1/ Bias current monitor: I_sense = (Voltage_pin 10) / 4Ω
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
7
Product Data Sheet
January 15, 2008
TGA2803-SM
Application Diagrams
Electrical Gain Amplifier
Electrical In
75Ω
TGA 2803
Push-Pull
TIA
Balun
Electrical Out
75Ω
Balun
Optical Receiver
Fiber In
Photodiode
+
Transformer
Balun
TGA 2803
Push-Pull
TIA
Balun
Electrical Out
75Ω
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
8
Product Data Sheet
January 15, 2008
TGA2803-SM
Recommended Electrical Assembly
+8V
C5
L1
RF
IN
T1
C1
1
20 19 18 17 16
2
C2
12
6
7
8
9
10
C4
11
C6
L2
Component Description
Ref
1/
RF
OUT
13
4
5
T2
14
TGA 2803
3
C3
15
+8V
Description
C1
0.01μF Capacitor
C2
0.01μF Capacitor
C3
470pF Capacitor
C4
470pF Capacitor
C5
270pF Capacitor
C6
270pF Capacitor
L1
820nH Inductor
L2
820nH Inductor
T1
Balun 1/
T2
Balun 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 (ADTL1-18-75), M/A-COM (ETC1-1-13), and Pulse Engineering
(CX2071).
www.BDTIC.com/TriQuint/
TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
9
Product Data Sheet
January 15, 2008
TGA2803-SM
Recommended Electro-Optical Assembly
+8V
Single-Mode
Fiber
-15V
C5
L1
PD
RFout
T1
C1
C2
1
2
3
4
5
20 19 18 17 16
TGA 2803
6 7 8 9 10
C3
15
14
13
12
11
Component Description
Ref
1/
T2
RF
OUT
C4
C6
L2
Description
C1
0.01μF Capacitor
C2
0.01μF Capacitor
C3
470pF Capacitor
C4
470pF Capacitor
C5
270pF Capacitor
C6
270pF Capacitor
L1
820nH Inductor
L2
820nH Inductor
T1
Balun 1/
T2
Balun 1/
PD
Broadband
Photodiode 2/
+8V
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 (ADTL1-18-75), M/A-COM (ETC1-1-13),
and Pulse Engineering (CX2071).
2/
Emcore 2609C Broadband Photodiode Module is recommended. The
module includes a 4:1 impedance transformer.
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TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
10
Product Data Sheet
January 15, 2008
TGA2803-SM
Recommended Surface Mount Package Assembly
Proper ESD precautions must be followed while handling packages.
Clean the board with acetone. Rinse with alcohol. Allow the circuit to fully dry.
TriQuint recommends using a conductive solder paste for attachment. Follow solder paste and reflow oven
vendors’ recommendations when developing a solder reflow profile. Typical solder reflow profiles are listed
in the table below.
Hand soldering is not recommended. Solder paste can be applied using a stencil printer or dot placement.
The volume of solder paste depends on PCB and component layout and should be well controlled to
ensure consistent mechanical and electrical performance.
Clean the assembly with alcohol.
Typical Solder Reflow Profiles
Reflow Profile
SnPb
Pb Free
Ramp-up Rate
3 °C/sec
3 °C/sec
Activation Time and
Temperature
60 – 120 sec @ 140 – 160 °C
60 – 180 sec @ 150 – 200 °C
Time above Melting Point
60 – 150 sec
60 – 150 sec
Max Peak Temperature
240 °C
260 °C
Time within 5 °C of Peak
Temperature
10 – 20 sec
10 – 20 sec
Ramp-down Rate
4 – 6 °C/sec
4 – 6 °C/sec
Ordering Information
Part
Package Style
TGA2803-SM
QFN 20L 4x4 Surface Mount
GaAs MMIC devices are susceptible to damage from Electrostatic Discharge. Proper precautions should
be observed during handling, assembly and test.
www.BDTIC.com/TriQuint/
TriQuint Semiconductor Texas: Phone (972)994-8465 Fax (972)994-8504 Email: [email protected] Web: www.triquint.com
11