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DB-55008L-318
RF power amplifier using 1 x PD55008L-E N-channel enhancement-mode lateral MOSFETs
Preliminary Data
Features

Excellent thermal stability Frequency: 225 - 318 MHz Supply voltage: 13.6 V Output power: 8 W Power gain: 13.5 0.7 dB Efficiency: 51 % - 79 % BeO free amplifier
Description
The DB-55008L-318 is a common source N-channel enhancement-mode lateral field effect RF power amplifier designed for VHF SEISMIC applications. Table 1.
Mechanical specification: L = 60 mm, W = 30 mm
Device summary
Order codes DB-55008L-318
February 2009
Rev 1
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This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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Contents
DB-55008L-318
Contents
1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 3 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 VDD = 13.6 V, IDQ = 200 mA, Pin = 26 dBm . . . . . . . . . . . . . . . . . . . . . . . 5
5 6 7 8 9
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Mounting indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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DB-55008L-318
Electrical data
1
1.1
Electrical data
Maximum ratings
Table 2.
Symbol VDD ID TCASE TA Supply voltage Drain current Operating case temperature Max. ambient temperature
Absolute maximum ratings
Parameter Value 13.6 1.5 +20 to +85 +55 Unit V A C C
2
Electrical characteristics
TA = +25 C, VDD = 13.6 V, Idq = 200 mA, unless otherwise specified Table 3.
Symbol f Pout Gp ND H2 H3
RF data
Parameters Frequency range Output power Power gain Efficiency 2nd harmonic 3rd harmonic PIN = 26 dBm PIN = 26 dBm PIN = 26 dBm PIN = 26 dBm PIN = 26 dBm Test conditions Min 225 7 8 13.5 0.7 51 - 79 -30 -70 Typ Max 318 Unit MHz W dB % dBc dBc
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Impedance
DB-55008L-318
3
Impedance
Figure 1. Impedance graphic
D
ZDL
ZGS IN
G
S
Note:
Optimum board impedances for which the DUT operates, at given DC bias and frequency band, to meet application requirements. Table 4. Impedance data
f(MHz) 220 230 240 250 260 270 280 290 300 310 320 ZGS () 19.5 - j0.48 18.0 - j0.61 16.6 - j0.40 15.3 - j0.02 14.1 + j0.54 12.9 + j1.34 12.1 + j2.10 11.2 + j3.08 10.3 + j3.97 9.6 + j4.87 8.9 + j5.94 ZDL () 10.4 - j0.93 8.8 - j0.34 7.5 + j0.51 6.5 + j1.43 5.7 + j2.23 5.0 + j3.18 4.4 + j4.15 4.0 + j4.86 3.6 + j5.81 3.2 + j6.42 2.8 + j7.47
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DB-55008L-318
Typical performance
4
4.1
Figure 2.
Typical performance
VDD = 13.6 V, IDQ = 200 mA, Pin = 26 dBm
Output power and efficiency vs frequency Vdd = 13.6 V, Idq = 200 mA, Pin = 26 dBm Figure 3. Gain vs frequency Vdd = 13.6 V, Idq = 200 mA, Pin = 26 dBm
Figure 4.
Gain vs output power Vdd = 13.6 V, Idq = 200 mA
Figure 5.
Input return loss vs frequency Vdd = 13.6V, Idq = 20 mA, Pin = 26 dBm
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Typical performance Figure 6. Harmonics vs frequency Vdd = 13.6 V, Idq = 200 mA, Pin = 26 dBm
DB-55008L-318
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DB-55008L-318
Test circuit
5
Table 5.
Test circuit
Test circuit schematic
Table 6.
Components part list for DB-55008L-318
Description Ferrite bead Ferrite bead Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Zener Diode Inductor Inductor Inductor Resistor Potentiometer Resistor 120 pF 1 pF 10 pF 10 F 240 pF 20 pF 47 pF 30 pF 5.1 V 17,5 nH 12,5 nH 8 nH 1 k 10 k 15 1206 1206 1206 1206 1206 SMT 100B 100B 100B 100B SOD110 Value Case size Manufacturer Panasonic Panasonic Murata Murata Murata Panasonic ATC ATC Murata ATC Philips Coilcraft Coilcraft Coilcraft Tyco electronics Bourns electronics Bourns electronics Part code EXCELDRC35C EXCELDRC35C GRM42-6 COG 151J 50_ GRM42-6 COG 102J 50 GRM42-6_X7R 104K 50_ EEVHB1V100P ATC 100B 241JW ATC 100B 200 JW GRM42-6 COG ATC 100B 300 JW BZX284C5V1 B06T A04T A03T 01623440-1 3214W-1-103E
Component ID B1 B2 C1, C2 C3 C4 C5 C6, C10 C7 C8 C9 D1 L1, L2 L3 L4 R1 R2 R3
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Test circuit Table 6. Components part list for DB-55008L-318 (continued)
Description Value W=2.87 mm W=2,87 mm W=4.98 mm Transmission line W=4.98 mm W=2,87 mm W=2.87 mm W=2.87 mm LDMOS Case size L=7.4 mm L=3,5 mm L=4,8 mm L=4.0 mm L=1,0 mm L=5,4 mm L=6.7 mm STMicroelectronics FR-4 THk = 0.060" 2 OZ Cu both sides Manufacturer
DB-55008L-318
Component ID TL1 TL2 TL3 TL4 TL5 TL6 TL7 PD55008L Board
Part code
PD55008L-E
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DB-55008L-318
Circuit layout
6
Circuit layout
Figure 7. Test fixture component layout
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Mounting indications
DB-55008L-318
7
Mounting indications
Figure 8. Standard SMD mounting
Pin1
Copper foil
PCB heatsink heat transfer
18 holes ( 0.5 mm)
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DB-55008L-318
Package mechanical data
8
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. Table 7.
Dim. Min A A1 A3 AA b c D d E E2 e f g h 2.49 0.15 0.43 0.64 Typ 0.90 0.02 0.24 0.25 0.51 0.71 5.00 0.30 5.00 2.57 1.27 3.37 0.74 0.21 2.64 0.098 0.35 0.58 0.79 0.006 0.017 0.025 Max 1.00 0.05 Min Typ 0.035 0.001 0.009 0.01 0.020 0.028 0.197 0.011 0.197 0.101 0.050 0.132 0.03 0.008 0.104 0.014 0.023 0.031 Max 0.039 0.002
PowerFLATTM mechanical data
mm inch
Figure 9.
PowerFLATTM package dimensions
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Package mechanical data Table 8.
Dim. Min Ao Bo Ko 5.15 5.15 1.0 Typ 5.25 5.25 1.1 Max 5.35 5.35 1.2 Min 0.12 0.12 0.02 Typ 0.13 0.13 0.02
DB-55008L-318
PowerFLATTM tape and reel dimensions
mm. inch Max 0.13 0.13 0.02
Figure 10. PowerFLATTM tape and reel
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DB-55008L-318
Revision history
9
Revision history
Table 9.
Date 20-Feb-2009
Document revision history
Revision 1 First release Changes
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DB-55008L-318
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