T GA2803-SM
CATV TIA / Gain Block
Applications
HFC Nodes
CATV Line Amplifiers
Head End Equipment
Product Features
Frequency Range: 40 MHz – 1218 MHz
20 dB Flat Gain
800 Transimpedance
(1)
< 5 pA / Hz Equivalent Input Noise Current
(1)
1.5 dB 75 Noise Figure
Ultra-Low Distortion (+45 dBm IP3 typ.)
Low DC Power Consumption
Single Supply Bias (+8 V)
Proven GaAs Technology
20 Pin 4.0 x 4.0 x 0.9 mm QFN Package
Top View
Bottom View
Measured Performance
75
Output TOI
55
51
OTOI (dBm)
47
43
39
Notes:
1. Includes 1:1 balun, No photodiode or auto-transformer
35
0
100
200
300
400
500
600
700
800
900
Frequency (MHz)
General Description
Noise Current(pA/rt(Hz))
Input Referred Current Noise
with High Impedance source
6
5
4
3
2
1
0
0
200
400
600
800
1000
1200
The TriQuint TGA2803-SM is an ultra-linear, packaged
TIA / Gain Block which operates from 40 MHz to
1218 MHz.
The TGA2803-SM typically provides flat gain along with
ultra-low distortion. It also provides high output power
with low DC power consumption.
This amplifier is ideally suited for use in CATV
distribution systems or other applications requiring
extremely low noise and distortion.
Demonstration Boards are available.
Lead-free and RoHS compliant.
Frequency (M Hz)
Typical 75
Gain
w/External Balun Losses Removed
24
20
16
12
8
4
0
0
200
400
600
800
1000
1200
Ordering Information
Part No.
TGA2803-SM
TGA2803-SM-EVB
Description
QFN 20L 4 x 4 Surface Mount
Gain (dB)
Standard T/R size = 2,500 pieces on a 7” reel.
Preliminary Datasheet: Rev. A 10-09-14
© 2014 TriQuint
Frequency (MHz)
- 1 of 14 -
Disclaimer: Subject to change without notice
www.triquint.com
T GA2803-SM
CATV TIA / Gain Block
Absolute Maximum Ratings
Parameter
Bias Supply Voltage (V
DD
)
Total Bias Supply Current (I
DD
)
Total RF Input Power (P
IN
)
Storage Temperature (T
STG)
Recommended Operating Conditions
Rating
Parameter
Bias Supply Voltage
Bias Supply Current
Gate 1 Voltage (Pin 19)
Gate 2 Voltage (Pin 7)
T
AMB
Tj (for>10
6
hours MTTF)
Min
Typ Max Units
+8
350
+0.90
+2.66
25
+85
200
V
mA
V
V
°C
°C
+15 V
500 mA
77 dBmV
−65
to 150 °C
Operation of this device outside the parameter ranges given
above may cause permanent damage.
-30
Electrical performance is measured under conditions noted in
the electrical specifications table. Specifications are not
guaranteed over all recommended operating conditions.
RF Specifications
Test conditions unless otherwise stated: T
A
=+25 °C, V
DD
=+8 V, Using electrical application circuit on pg. 9
Parameter
Bandwidth
Power Gain
(1)
Gain Flatness
Adjacent Channel Power Ratio
(1)
Noise Figure
Transimpedance
Equivalent Input Current Noise
(2)
Two-Tone, Third-Order Intercept (450 MHz)
(3)
Two-Tone, Third-Order Intercept (750 MHz)
(3)
Input Return Loss
Output Return Loss
Drain Current
(4)
Saturated Output Power (750 MHz)
Symbol
BW
S
21
GF
ACPR1
NF
TZ
I
n
IP3
IP3
IRL
ORL
I
D
P_sat
Min
40
Typ
20
±0.3
−66
1.5
800
5
+46
+42
10
17
350
+28
Max
1218
Units
MHz
dB
dB
dBc
dB
pA / rtHz
dBm
dBm
dB
dB
mA
dBm
−63
250
500
Notes:
1. Measured at 858 MHz with a single 6 MHz wide channel, 256QAM signal at 62 dBmV average output power (into 75
Ω).
ACP is
measured in the channel that is offset from the signal band edge by 750 kHz to 6 MHz. Gain is also measured at this frequency.
2. Measured with open-circuited input
3. Measured at +16 dBm output power per tone
4. Increasing drain current will improve linearity of device
Thermal Information
Parameter
JC
Thermal Resistance
(channel to backside of package)
Conditions
V
D
= +8 V, I
D
= 350 mA
P
DISS
= 2. 8 W
T
CH
(
°C)
128
JC
( °C/W)
15.4
T
M
(HRS)
7.2 E+6
Notes:
1. Worst case condition with no RF applied, 100% of DC power is dissipated. Package backside temperature at +85 °C.
Preliminary Datasheet: Rev. A 10-09-14
© 2014 TriQuint
- 2 of 14 -
Disclaimer: Subject to change without notice
www.triquint.com
T GA2803-SM
CATV TIA / Gain Block
Typical Measured S-Parameters (75 Ω) : TGA2803-SM-EVB
Includes effects of external baluns
Input Return Loss vs. Frequency
-10
-13
-16
-19
-22
-25
28
Gain vs. Frequency
24
S21 (dB)
S11 (dB)
20
16
12
-28
-31
0
200
400
600
800
1000
1200
8
0
200
400
600
800
1000
1200
Frequency (MHz)
Frequency (MHz)
-5
-10
-15
Isolation vs. Frequency
-5
-10
-15
Output Return Loss vs. Frequency
S12 (dB)
S22 (dB)
-20
-25
-30
-35
-40
0
200
400
600
800
1000
1200
-20
-25
-30
-35
-40
0
200
400
600
800
1000
1200
Frequency (MHz)
Frequency (MHz)
Preliminary Datasheet: Rev. A 10-09-14
© 2014 TriQuint
- 3 of 14 -
Disclaimer: Subject to change without notice
www.triquint.com
T GA2803-SM
CATV TIA / Gain Block
Typical Performance TGA2803-SM-EVB
Test conditions unless otherwise stated: V
D
=+8 V, I
D
= 350 mA (Includes effects of external baluns)
Output Power vs. Frequency
55
OTOI vs. Frequency
51
OTOI (dBm)
47
43
39
35
0
100
200
300
400
500
600
700
800
900
Frequency (MHz)
Preliminary Datasheet: Rev. A 10-09-14
© 2014 TriQuint
- 4 of 14 -
Disclaimer: Subject to change without notice
www.triquint.com
T GA2803-SM
CATV TIA / Gain Block
Typical Performance TGA2803-SM-EVB
Includes effects of external baluns
6
Noise Current vs. Frequency
Noise Current(pA/rt(Hz))
5
4
3
2
1
0
0
200
400
600
800
1000
1200
Frequency (MHz)
5
4.5
4
Nosie Figure vs. Frequency
Noise Figure(dB)
3.5
3
2.5
2
1.5
1
0.5
0
0
200
400
600
800
1000
1200
Frequency(MHz)
*Input
balun losses removed
Preliminary Datasheet: Rev. A 10-09-14
© 2014 TriQuint
- 5 of 14 -
Disclaimer: Subject to change without notice
www.triquint.com
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
