THS4021 Datasheet, PDF (18/22 Pages) Texas Instruments – 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS

THS4021, THS4022
350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
SLOS265B – SEPTEMBER 1999 – REVISED FEBRUARY 2000
APPLICATION INFORMATION
general PowerPAD design considerations (continued)
THS4022
MAXIMUM RMS OUTPUT CURRENT
vs
RMS OUTPUT VOLTAGE DUE TO THERMAL LIMITS
200
Package With
180
θ_JA ≤ 60°C/W
Maximum Output
Current Limit Line
160
140
120
100
80
60
40
20
0
0
SO-8 Package
θ_JA = 167°C/W
Low-K Test PCB
Safe Operating Area
SO-8 Package
θ_JA = 98°C/W
High-K Test PCB
VCC = ± 5 V
TJ = 150°C
TA = 50°C
Both Channels
1
2
3
4
5
| VO | – RMS Output Voltage – V
Figure 42
THS4022
MAXIMUM RMS OUTPUT CURRENT
vs
RMS OUTPUT VOLTAGE DUE TO THERMAL LIMITS
1000
VCC = ± 15 V
TJ = 150°C
TA = 50°C
Both Channels
Maximum Output
Current Limit Line
100
SO-8 Package
10
θ_JA = 98°C/W
High-K Test PCB
DGN Package
θ_JA = 58.4°C/W
SO-8 Package
θ_JA = 167°C/W
Safe Operating Area ^{Low-K Test PCB}
1
0
3
6
9
12
15
| VO | – RMS Output Voltage – V
Figure 43
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